Relevant bibliographies by topics / Laser - fil

Academic literature on the topic 'Laser - fil'

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Published: 8 June 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Laser - fil":

1

Aline Evangelista Souza-Gabriel, Daniela Thomazatti Chimello-Sousa, Regina Guenka Palma-Dibb, Jesus Djalma Pécora, and Silmara Aparecida Milori Corona. "Morphologic assessment of dental surface/ glass ionomer cement interface: influence of Er:YAG laser pretreatment." RSBO 9, no. 4 (December 13, 2013): 382–7. http://dx.doi.org/10.21726/rsbo.v9i4.1017.

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The aim of this study was to assess the surface and the substrate/glass ionomer cement (GIC) interface after Er:YAG laser irradiation by means of scanning electron microcopy. Material and methods: Thirty human third molars were selected and had their roots removed. Crowns were sectioned to obtain discs that were randomly assigned to three groups according to the surface pretreatment: 40% polyacrylic acid (control); Er:YAG laser irradiation (80mJ/2Hz) or Er:YAG laser followed by 40% polyacrylic acid. Two discs of each group were put aside to the surface analysis and the others were bisected. One half received Ketac-Fil and the other received Fuji II LC. Specimens were prepared for SEM and were analyzed under different magnifications. Results: Er:YAG laser group showed no adhesive interface for both enamel and dentin, but strongly damaged the interface build-up for dentin/Fuji II LC. The application of laser irradiation followed by the polyacrylic acid exhibited gaps and irregularities for both substrates. Conclusion:Er:YAG laser irradiation combined or not with 40% polyacrylic acid produced a surface unfavorable for GIC interaction, especially for the resin-modified ones.
2

Hetrodt, Franziska, Julian Lausch, Hendrik Meyer-Lueckel, Georg Conrads, and Christian Apel. "Evaluation of Restorative Materials Containing Preventive Additives in a Secondary Caries Model in vitro." Caries Research 53, no. 4 (2019): 447–56. http://dx.doi.org/10.1159/000496401.

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The incorporation of antibacterial agents into dental restorative materials is a promising strategy for secondary caries prevention. Previously, Carolacton affected Streptococcus mutans biofilm formation on composite materials in vitro. The present study evaluated secondary caries formation adjacent to Carolacton-containing composites and conventional restorative materials using an artificial biofilm model. Standardized cavities were prepared in bovine dentin-enamel samples (n = 175) and restored with various dental materials (Tetric EvoCeram [T], GrandioSo composite without [G] and with Carolacton [GC], Grandio Flow without [F] and with Carolacton [FC], GrandioSo containing sodium fluoride [GNaF], and Ketac Fil [K]). After artificial aging, S. mutans was grown on the samples for 7 days. The investigation of gap sizes and secondary caries formation was performed using confocal laser scanning microscopy and transversal microradiography. Median gap size in enamel was 9.4 µm (interquartile range 7.9–12.7). Compared to all other groups significant differences in gap sizes could be observed for Ketac Fil (p < 0.001; Mann-Whitney test). Only GrandioSo composite containing 30% sodium fluoride and Ketac Fil showed significantly smaller lesion areas in enamel (p < 0.001; Mann-Whitney test) than all other groups which was confirmed by the mineral loss data (p < 0.001; Mann-Whitney test). Based on the present in vitro results, it seems that Carolacton-containing composite in the current formulation within the shown simplified monoculture biofilm model is not able to prevent caries formation compared to fluoride-releasing restorative materials.
3

Karobari, Mohmed Isaqali, Rumesa Batul, Niher Tabassum Siddiqua Snigdha, Matheel AL-Rawas, and Tahir Yusuf Noorani. "Evaluation of push-out bond strength, dentinal tubule penetration and adhesive pattern of bio-ceramic and epoxy resin-based root canal sealers." PLOS ONE 18, no. 11 (November 13, 2023): e0294076. http://dx.doi.org/10.1371/journal.pone.0294076.

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Introduction Root canal sealing materials play a crucial role in an endodontic procedure by forming a bond between the dentinal walls and the gutta-percha. The current study aims to analyse the dentinal tubule penetration and adhesive pattern, including the push-out bond strength of six commercially available root canal sealers. Methodology Eighty-four mandibular first premolars were split into seven groups (and n = 12), Group 1: Dia-Root, Group 2: One-Fil, Group 3: BioRoot RCS, Group 4: AH Plus, Group 5: CeraSeal, Group 6: iRoot SP, Group 7: GP without sealer (control). Two groups were made, one for dentinal tubule penetration and the other for push-out bond strength; the total sample size was one hundred sixty-eight. Root canal treatment was performed using a method called the crown down technique, and for obturation, the single cone technique was used. A confocal laser scanning microscope (Leica, Microsystem Heidel GmbH, Version 2.00 build 0585, Germany) was used to evaluate dentinal tubule penetration, and Universal Testing Machine was utilised to measure the push-out bond strength (Shimadzu, Japan) using a plunger size of 0.4 mm and speed of 1mm/min. Finally, the adhesive pattern of the sealers was analysed by HIROX digital microscope (KH-7700). Statistical analysis was carried out by a one-way Anova test, Dunnet’s T3 test, and Chi-square test. Results Highest dentinal tubule penetration was noticed with One-Fil (p<0.05), followed by iRoot SP, CeraSeal, AH Plus, Dia-Root also, the most negligible value was recorded for BioRoot RCS. Meanwhile, BioRoot RCS (p<0.05) demonstrated the greater value of mean push-out bond strength, followed by One-fil, iRoot SP, CeraSeal, AH Plus and Dia-Root. Regarding adhesive pattern, most of the samples were classified as type 3 and type 4 which implies greater sealing ability and better adherence to the dentinal wall. However, BioRoot RCS revealed the most type 4 (p<0.05), followed by AH Plus, One-Fil, CeraSeal and Dia-Root. Conclusion The highest dentinal tubule penetration was shown by One-Fil compared to other groups. Meanwhile, BioRoot RCS had greater push-out bond strength and more adhesive pattern than other tested materials.
4

Souza, Beatriz Martines de, Daiana Moreli Soares dos Santos, and Ana Carolina Magalhães. "Antimicrobial and Anti-Caries Effect of New Glass Ionomer Cement on Enamel Under Microcosm Biofilm Model." Brazilian Dental Journal 29, no. 6 (December 2018): 599–605. http://dx.doi.org/10.1590/0103-6440201802163.

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Abstract The occurrence of caries lesions adjacent to restorations is a serious problem in Dentistry. Therefore, new antimicrobial restorative materials could help to prevent recurrent carious lesions. This study evaluated the effect of a new glass ionomer cement (Ion Z) on the viability of a microcosm biofilm and on the development of enamel demineralization. Enamel samples were filled with the following materials (n=9): A) Ion-Z (FGM Ltda); B) Maxxion R (FGM Ltda); C) Ketac Fil Plus (3M ESPE) and D) no restoration (control). The samples were then exposed to human saliva mixed with McBain saliva (1:50) containing 0.2% sucrose for 14 days. The live and dead bacteria were quantified by fluorescence using a confocal laser-scanning microscope. The enamel demineralization was analyzed using transverse microradiography (TMR). The data were submitted to ANOVA/Tukey or Kruskal-Wallis/Dunn test (p<0.05). Ion Z induced a higher percentage of dead bacteria (60.96±12.0%) compared to the other groups (Maxxion R: 39.8±6.7%, Ketac Fil Plus: 43.7±9.71% and control 46.3±9.5%). All materials significantly reduced the average mineral loss compared to control (Ion-Z 25.0±4.2%vol, Maxxion R 23.4±8.0%vol, Ketac Fil Plus 30.7±7.7 and control 41.2±6.6%vol). Ion-Z was the only material able to significantly improve the mineral content at the surface layer (Zmax: 63.5±18.2%vol) compared to control (38.9±11.3%vol). Ion-Z shows antimicrobial potential, but its anti-caries effect was similar to the other materials, under this model.
5

Poreba, Martyna, and François Goulette. "Recalage rigide de relevé laser par mise en correspondance robuste basée sur des segments." Revue Française de Photogrammétrie et de Télédétection, no. 207 (September 24, 2014): 3–17. http://dx.doi.org/10.52638/rfpt.2014.208.

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Le recalage se révèle indispensable pour assembler des relevés laser devant servir à l'analyse, à la documentation et à la reconstruction tridimensionnelle d'environnements. Ce problème apparaît lorsqu'une zone d'intérêt est numérisée, au fil du temps, deux ou plusieurs fois, ou quand sa complexité nécessite un accroissement du nombre de stations de scanner laser fixes. Aussi, en raison de la variété des techniques disponibles d'acquisition, l'intégration multi-données devient une question importante puisqu'elle permet de mettre en cohérence des données contenant souvent une information complémentaire. La vaste majorité des algorithmes existants s'appuient sur les éléments ponctuels. C'est pourquoi les méthodes ICP basées-point demeurent actuellement les plus répandues. Cet article propose l'utilisation des segments sous forme d'intersections entre les plans principaux, pour un recalage rigide des nuages de points mobiles avec d'autres données, qu'elles soient 2D ou 3D. Ces primitives peuvent être aisément extraites, même dans les données laser hétérogènes de faible densité. Quelques méthodes de recalage basées-lignes ont été examinées afin de vérifier leur précision et robustesse au bruit. Les erreurs des paramètres estimés ainsi qu'un nouveau critère — distance modifiée de Hausdorff ont été employés pour les besoins d'une analyse quantitative. Au vu de ces éléments, une chaîne complète nommée RLMR-FMII 2 comprenant un recalage grossier suivi par un recalage fin est proposée pour calculer les paramètres de pose à partir de segments appariés.Étant donné que la mise en correspondance automatique d'entités linéaires est ardue et influence l'estimation des paramètres optimaux de transformation, une méthode d'appariement étudiant la similitude relative est avancée. Enfin, l'efficacité de cette méthode de recalage par mise en correspondance préalable des segments est évaluée et discutée.
6

Xiangming Dong, Xiangming Dong, Shibing Liu Shibing Liu, Haiying Song Haiying Song, Peng Gu Peng Gu, and Xiaoli Li Xiaoli Li. "Few-layer graphene film fabricated by femtosecond pulse laser deposition without catalytic layers." Chinese Optics Letters 13, no. 2 (2015): 021601–21604. http://dx.doi.org/10.3788/col201513.021601.

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Lin Suying, 林素颖, 廖小杰 Liao Xiaojie, and 韩冰 Han Bing. "纳秒激光诱导聚酰亚胺薄膜周期性结构的产生." Infrared and Laser Engineering 51, no. 2 (2022): 20210911. http://dx.doi.org/10.3788/irla20210911.

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Chen, Wenling, Chao Liu, Yuqi Zou, Zhihe Ren, Yuanzhuo Xiang, Fanchao Meng, Yinsheng Xu, et al. "Flexible omnidirectional reflective film for CO2 laser protection." Chinese Optics Letters 21, no. 2 (2023): 022201. http://dx.doi.org/10.3788/col202321.022201.

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Zhenkun Yu, Zhenkun Yu, Hongbo He Hongbo He, Xu Li Xu Li, Hongji Qi Hongji Qi, and Wenwen Liu Wenwen Liu. "Stress mechanism of pulsed laser-driven damage in thin film under nanosecond ultraviolet laser irradiation." Chinese Optics Letters 11, no. 7 (2013): 073101–73102. http://dx.doi.org/10.3788/col201311.073101.

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van der Meer, A. F. G., and M. J. van der Wiel. "Mid-Ir Fel User Facility Felix." Applied Spectroscopy 51, no. 4 (April 1997): 574–75. http://dx.doi.org/10.1366/0003702971940620.

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Journal articles Dissertations / Theses Books

Dissertations / Theses on the topic "Laser - fil":

1

Ushakov, Ilia. "Établissement des structures et propriétés mécaniques de l’alliage d’Inconel 625 dans les procédés d’élaboration additive à grande vitesse : arc fil, laser fil, laser poudre et hybride." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0147.

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Ce travail porte sur l'étude de l'établissement des structures et la caractérisation des propriétés mécaniques d'alliage d'Inconel 625 produites dans le cadre du projet PAM-PROD visant à réaliser des pièces de grande dimension par élaboration additive à grande vitesse. Trois techniques de dépôt sont étudiées : Arc/Fil, Laser/Fil et Laser/Poudre ainsi que la combinaison Laser/Fil et Laser/Poudre pour réalisation d'un mur hybride. Pour chaque procédés les macrostructures et microstructures sont caractérisées. Les procédés Arc/Fil et Laser/Poudre utilisés conduisent à une macrostructure mixte colonnaire équiaxe. Le procédé Laser/Fil conduit à des structures majoritairement colonnaires. Des mécanismes de formation des structures et transitions colonnaires/équiaxes sont proposés. Ces mécanismes sont alors repris et complétés pour interpréter la formation de la zone de transition dans le cas d'un mur hybride Laser Fil/Poudre. La réponse au traitement thermique de mise en solution et vieillissement est ensuite présentée en détaillant et comparant les cinétiques et mécanismes propres à chaque procédé. Les propriétés mécaniques en traction suivant 3 directions sont alors caractérisées et reliées aux structures. Pour l'ensemble des procédés une grande reproductibilité est obtenue et aucun procédé ne présente de caractère fragile. Les meilleures propriétés sont obtenues avec le procédé Laser/Poudre et le test de la jonction hybride montre que la zone de transition ne présente pas un point faible dans la structure
This work focuses on the establishment of microstructures and the characterization of the mechanical properties of Inconel 625 alloy produced as part of the PAM-PROD project aimed at producing large parts using high deposition rate additive manufacturing. Three deposition techniques are being studied: Arc/Wire, Laser/Wire and Laser/Powder, as well as a combination of Laser/Wire and Laser/Powder to produce a hybrid wall. Macrostructures and microstructures are characterized for each process. The Arc/Wire and Laser/Powder processes used lead to a mixed columnar - equiaxed macrostructure. The Laser/Wire process leads to predominantly columnar structures. Mechanisms for the formation of columnar/equiaxed structures and transitions are proposed. These mechanisms are then taken up and completed to interpret the formation of the transition zone in the case of a hybrid Laser Wire/Powder wall. The response to solution heat treatment and ageing is then presented by detailing and comparing the kinetics and mechanisms specific to each process. The tensile mechanical properties along 3 directions are then characterized and related to the structures. For all the processes, a high degree of reproducibility is obtained and none of the processes has a brittle character. The best properties were obtained with the Laser/Powder process, and the hybrid junction test showed that the transition zone was not a weak point in the structure
2

WALLEE, OLIVIER. "Contribution a l'etude du soudage d'alliages d'aluminium par faisceau laser avec fil d'apport." Université Louis Pasteur (Strasbourg) (1971-2008), 2000. http://www.theses.fr/2000STR13087.

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L'objet de cette etude est de mettre en evidence les difficultes inherentes au procede de soudage d'alliages d'aluminium par faisceau laser. L'association d'un apport de matiere sous forme de fil au soudage par faisceau laser est une solution a certains problemes rencontres. La comprehension de l'interaction laser / matiere et des cycles thermiques subis par les pieces soudees permet de definir les proprietes metallurgiques du cordon de soudure. L'apport de fil est principalement utilise dans le but de limiter l'apparition de defauts. La premiere partie de l'etude consiste a recenser ceux-ci. Le positionnement du fil exerce une influence sensible sur la qualite des cordons realises. Un systeme de visualisation par camera ccd a ete developpe afin d'etudier celle-ci. A l'aide d'un systeme de controle du procede par camera ccd l'operation de soudage est filmee. Les images sont ensuite traitees par un logiciel. Les resultats de ces essais montrent que le systeme est fiable et qu'il rend compte de l'apparition de la plupart des defauts de maniere reproductible. L'alliage 2024 a ete choisi pour mettre en application les solutions envisagees en raison de sa faible soudabilite. Le resultat obtenu revele un cordon de soudure de qualite optimale. Sa resistance mecanique atteint celle du materiau de base. En conclusion, l'etude du soudage des alliages d'aluminium par faisceau laser mis en evidence les avantages que l'on peut tirer d'un apport de matiere sous forme de fil d'alliage. Ce procede permet de pallier aux defauts courants. En parallele, la mise au point d'un systeme de controle des defauts permet d'apprecier en temps reel la qualite des assemblages soudes. Pour finir, l'emploi de fil d'apport et le traitement thermique de soudures realisees avec un alliage reconnu comme etant peu soudable ont abouti a la realisation de cordons sains possedant des caracteristiques mecaniques egales a celles du metal de base.
3

Leclère, Franck. "Microanastomoses vasculaires assistées par laser diode 1950 nm en chirurgie plastique réparatrice : étude expérimentale et clinique." Thesis, Lille 2, 2011. http://www.theses.fr/2011LIL2S047.

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En chirurgie plastique, le succès des lambeaux libres et des replantations dépend largement de la qualité des microanastomoses vasculaires. Ce travail complète les bases scientifiques de la technique de microanastomoses assistées par laser diode 1950 nm par la mise au point d’une méthode standardisée et l’étude post-opératoire du débit sanguin sur des séries animales. Il pose les jalons des premières séries cliniques. Dans une première série animale (S1), 30 anastomoses terminoterminales carotidiennes et 30 anastomoses jugulaires sont effectuées par la technique laser diode 1950 nm chez des rats Wistar. Les paramètres lasers suivants sont utilisés: taille du spot 400 µm, temps 1s, puissance délivrée de 100 mW à 150 mW (carotides) et de 90 mW à 140 mW (veines jugulaires). Elles sont comparées à J0 puis après 1, 4 et 12 semaines postopératoires, à un groupe contrôle de 30 anastomoses artérielles et de 30 anastomoses veineuses dans les mêmes proportions réalisées à l’aide de la technique conventionnelle par fils. Deux autres séries animales S2 et S3 sont ensuite entreprises à l’aide des paramètres lasers mis en évidence dans l’étude S1. Une série S2 regroupant vingt microanastomoses terminoterminales carotidiennes de rats Wistar est réalisée par la technique laser (n=10, P=120mW, spot 400 μm, durée du spot 1s, 5 spots par paroi, fluence 95 J/cm²) et la technique conventionnelle par fils 10/0 (groupe contrôle, n=10). Pour les deux groupes, la carotide controlatérale non opérée sert de référence pour le calcul du débit sanguin par IRM de flux : Une séquence de positionnement, une séquence anatomique, une séquence angiographique et une séquence de flux sont réalisées un jour après l’opération puis après une, quatre et huit semaines. Une série S3 regroupant vingt microanastomoses terminoterminales jugulaires de rats Wistar est réalisée par la technique laser (n=10, P=110mW, spot 400 μm, durée du spot 1s, 4 spots par paroi, fluence 90 J/cm²) et la technique conventionnelle (groupe contrôle, n=10). De même la jugulaire controlatérale sert de référence dans les diverses séquences IRM. Au total, 40 actes microchirurgicaux comprenant 38 lambeaux libres et 2 replantations digitales sont réalisés à l’aide du laser diode 1950 nm. Les microanastomoses artérielles sont terminoterminales dans 36 cas et terminolatérales pour 4 autres. Les microanastomoses veineuses sont toutes terminoterminales. Les microanastomoses sont réalisées par un laser diode 1,95 µm après mise en place de 2-5 points de rapprochement. Les paramètres suivants sont utilisés : taille du spot 400µm, puissance 125mW, 4 à 8 spots sur chaque face, temps d’application (0,7-2s) suivant le diamètre des vaisseaux : la fluence varie de 70 à 200 J/cm². Les études du débit sanguin par les nouvelles techniques d’IRM de flux avec les paramètres maintenant standardisés mettent en évidence l’excellente perméabilité des anastomoses laser sur un modèle animal. Le taux de succès de cette première grande série clinique apparait excellent lorsque comparé à celui des grandes séries de la littérature. Les innovations technologiques devraient conduire à une utilisation plus large de cet outil au bloc opératoire
In the field of plastic surgery, the most important factor for successful free flap transfer and replantations is a well executed vascular microanastomosis. The aim of these studies is to complement the scientific basis of the 1950 nm diode laser assisted microanastomosis (LAMA) by standardising the technique and studying the postoperative blood flow in animal series. This work introduces the first clinical series. In the first animal series (S1), 30 end-to-end microanastomoses of the carotidis and 30 end-to-end microanastomoses of the external jugular were performed with a 1950 nm diode LAMA technique in Wistar rats. The following laser parameters were used: spot size=400µm, spot duration=1s, Power varying between 100 to 150 mW for arterial microanastomoses and between 90 to 140 mW for venous microanastomoses. They were compared at D0 and at 1, 4 and 12 weeks with 30 conventional arterial microanastomoses and 30 conventional venous microanastomoses.Two other animal series (S2 and S3) were performed using the standardised parameters of the initial studies. In the S2 series, LAMA was performed on a group of 10 carotidis on Wistar rats. Two 10/0 stay sutures and a standard laser tissue welding technique (P=120mW, spot size=400 μm, t=1s, 5 spots for each wall, fluence=95 J/cm²) were used (LAMA group). They were compared with a group of 10 conventional arterial anastomosis (CSMA group). A MRI-positioning sequence (Magnetic Resonance Imaging), an anatomical sequence, an angiographic sequence and a flow sequence were performed 1 day after operation and then after 1, 4 and 8 weeks. Similarly, the series S3 included 20 microanastomoses of the external jugular performed with LAMA (n=10, P=110mW, spot size=400 μm, spot duration= 1s, 4 spots for each wall, fluence 90 J/cm²) or the conventional technique (n=10). For the two groups, contralateral non-operated external jugular were used as control.In total, 40 clinical procedures, including 38 free flaps and 2 finger replantations have been performed with the LAMA technique. End-to-end arterial microanastomoses were performed in 36 cases and end-to-side in 4 cases. All venous microanastomoses were performed end-to-end. LAMA was performed with a 1950 nm diode laser after placement of 2-5 stitches. The following laser parameters were used: spot size=400 μm, spot duration=0.7-2s, 4-8 spots for each wall, power=125 mW, fluence=70-200 J/cm². The animal series S1 demonstrates excellent bloodless patency at fluences ranging from 90 to 100 J/cm² (Power between 110-130mW) for arterial LAMA, and between 80 and 95 J/cm² (Power between 100-120mW) for venous LAMA. The flow-MRI further demonstrates that 1950 nm diode laser-assisted microanastomoses performed with our standardised parameters is a consistent, reliable and reproducible technique. The success rate of the clinical series appears promising. Technical innovation will most likely lead to greater ease of use of the laser handpiece in the operating room
4

Maquet, Jean. "Contribution à l'étude de la surstabilité d'une surface libre chauffée par un laser ou un fil chaud." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37607681j.

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5

Rzaigui, Habeb. "Systèmes hybrides opto/sans fil pour les réseaux multi-gigabits aux fréquences millimétriques." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT014/document.

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Ce travail de thèse porte sur les systèmes de communication radio-sur-fibre (RoF) aux fréquences millimétriques dans la gamme de fréquences 57-66 GHz et leur génération par voie optique. La technique utilisée repose sur l’emploi de diodes laser à verrouillage de modes à boites quantiques. Au cours de cette thèse, plusieurs études ont été effectuées : la première porte sur la capacité d’intégrer ces types des lasers dans des systèmes de communication RoF avec leurs performances sous modulation directe ou externe. La deuxième étude a été consacrée aux effets de la propagation de ces signaux dans des systèmes basés sur les lasers à blocage de modes. Une technique originale a été mise en place afin de réduire la sensibilité à la dispersion chromatique dans la fibre optique. Une étude de la réduction du bruit de phase des lasers à verrouillage de modes basée sur l’observation de l’effet de la contre réaction et l’injection optique externe a été également présentée
This thesis focuses on the radio-over-fiber (RoF) communication systems at millimeter frequencies in the frequency range 57-66 GHz and optical generation of a signal at millimeter-wave frequency band. The technique used is based on mode-locked laser diodes. The diodes employed in this work are in quantum dots (or quantum dashes) technology. In this thesis, several studies were conducted: the first relates the ability of integration these types of lasers in the RoF communication systems under direct or external modulation. The second study was devoted to propagation effects. An original technique was implemented to reduce the sensitivity to chromatic dispersion in an optical fiber. A study of the reduction of phase noise mode-locked lasers based on the observation of the reaction effect and against the external optical injection was presented
6

Cazic, Ivan. "Coaxial laser wire additive manufacturing of Inconel 718." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0113.

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L'utilisation de l'alliage Inconel 718 en fabrication additive a fait l'objet de nombreuses études au cours des dernières années. Il est rapidement apparu que le contrôle de la morphologie et la taille des grains se formant durant la solidification constitue un véritable défi. Notre travail s'attache à le relever dans le cas de la technologie laser-fil coaxial en apportant une meilleure compréhension de la formation des microstructures, notamment des conditions d'apparition de grains équiaxes fins observés en fond de bain de fusion. En premier lieu, la stabilité du procédé ainsi que les aspects thermiques ont été étudiés, en lien avec la solidification. Ainsi, grâce à l'imagerie rapide et l'imagerie thermique, nous avons pu estimer les conditions de solidification en fond de bain. Dans un second temps, nous avons analysé par EBSD les grains équiaxes et révélé qu'ils sont très souvent regroupés en amas multi-maclés présentant une symétrie icosaédrique. Nous proposons que cette organisation particulière est la signature d'un mécanisme «Icosahedral Short Range Order mediated nucleation» (ISRO), qui serait favorisé par les vitesses de refroidissement élevées imposées par le procédé d'une part, et par des enrichissements locaux du liquide en fond de bain lors de la fusion de la couche précédente d'autre part. Nous avons donc caractérisé finement les zones équiaxes par MEB et MET. Nous avons identifié la présence de carbures TiC au sein des amas multi-maclés et nous avons mis en évidence un fort enrichissement local en Nb autour des carbures par EDS. Nous avons pu identifier la phase Nb2Ni à la surface d'un TiC qui requiert une composition locale importante en Nb pour apparaître. À partir de ces observations nous proposons un scenario possible pour l'apparition des grains équiaxes fins dans l'Inconel 718 déposé par la technologie laser-fil coaxial. Les TiC y joueraient un rôle important en capturant les éléments minoritaires lors la refonte, et en promouvant l'apparition locale d'amas icosaédriques dans le liquide qui favoriseraient la germination de grains dont les orientations relatives reflèteraient cet ordre icosaédrique
The use of Inconel 718 alloy in additive manufacturing has been the subject of numerous studies in recent years. It has appeared early that the control of the morphology and size of the grains forming during solidification is a formidable challenge. Our work aims to address this challenge in the case of coaxial laser wire technology by providing a better understanding of the formation of microstructures, including the conditions for the appearance of fine equiaxed grains observed at the bottom of the melt pools.First, the stability of the process as well as the thermal aspects have been investigated, in connection with solidification. Thanks to fast imaging and thermal imaging, we have been able to estimate the solidification conditions at the bottom of the bath.In a second step, we have analyzed by EBSD the equiaxed zones and we have observed that they are very often clustered with twin relations compliant with some icosahedral symmetry. It is proposed that this particular organization is the signature of an "Icosahedral Short Range Order mediated nucleation" (ISRO) mechanism, which would be favored by the high cooling rates imposed by the process on the one hand, and by local enrichments of the liquid at the bottom of the melt pool during the melting of the previous layer on the other hand.We have therefore characterized the equiaxed zones by SEM and TEM. We have identified TiC carbides in the grain clusters and we have highlighted a strong local enrichment in Nb around the carbides by EDS. We have been able to identify Nb2Ni at the surface of a TiC carbide which requires a high local Nb composition to appear.From these observations we propose a possible scenario for the appearance of fine equiaxed grains in Inconel 718 deposited by the coaxial laser wire technology. TiC would play an important role by capturing minority elements during remelting, and by promoting the local appearance of icosahedral clusters in the liquid that would favor the nucleation of grains whose relative orientations would reflect this icosahedral order
7

Maquet, Jean. "Contribution à l'étude des mécanismes de surstabilité d'une surface libre chauffée par un laser ou un fil chaud." Rouen, 1987. http://www.theses.fr/1987ROUES047.

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Simulation numérique de l'écoulement laminaire bidimensionnel créé par un fil chaud placé sous une surface libre. Le code de calcul inclut les convections naturelle et de Marangoni, les transferts de chaleur à l’interface ainsi que la viscosité interfaciale. Analyse linéaire de stabilité dans le cas d'une couche liquide horizontale d'extension infinie, limitée par une paroi rigide et une surface libre. Modélisation
8

Merigaud, Eric. "Structure de la couche limite turbulente en présence d'aspiration pariétale localisée." Aix-Marseille 2, 1995. http://www.theses.fr/1995AIX22015.

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Cette etude entre dans le cadre de la reduction de trainee des avions. On espere reduire la contamination du bord d'attaque d'une aile en fleche, en appliquant une aspiration a travers une ou plusieurs fentes situees sur le fuselage juste en amont de l'emplanture, avec des debits d'aspiration de l'ordre de quelques dixiemes du debit de la couche limite. Des mesures par velocimetrie laser doppler dans un tunnel hydrodynamique a faible nombre de reynolds ont permis d'etudier les effets de l'aspiration au voisinage de la paroi sur les termes du tenseur de reynolds, sur le terme de production d'energie cinetique de la turbulence, tandis que des mesures par anemometrie fil chaud ont permis d'etudier les effets de l'aspiration sur la structure de la turbulence dans une soufflerie de type eiffel pour un nombre de reynolds plus eleve. Sur le plan numerique, deux codes de resolution ont ete utilises et ont permis de mettre en evidence des effets de l'aspiration sur le champ de pression suffisamment importants pour necessiter un code de resolution des equations de navier stokes, plutot qu'un code de resolution des equations de couche limite
9

Lassoued, Abdessalem. "Caractérisation de catalyseurs solides par fluorescence induite par laser." Paris 6, 2001. http://www.theses.fr/2001PA066447.

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Mouqallid, Mhamed. "Etude de l'interaction de deux jets opposés turbulents." Rouen, 1991. http://www.theses.fr/1991ROUES007.

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Ce mémoire concerne l'étude expérimentale de l'interaction et le mélange de deux jets opposés. La première partie est consacrée à l'étude de la turbulence par la technique de la vélocimétrie Doppler laser. Nous avons présenté dans la deuxième partie le champ moyen et fluctuant d'un scalaire passif à savoir la température qui a été injectée dans l'un des deux jets. Les mesures ont été réalisées par thermométrie à fil froid. L'étude a été faite pour différents nombres de Reynolds et pour trois distances séparant les deux jets. L'analyse du champ dynamique met en évidence l'existence d'une forte énergie de turbulence et d'une forte anisotropie dans la zone d'interaction ainsi qu'une décorrélation entre les deux composantes de la vitesse sur le plan de stagnation. On a pu déterminer expérimentalement des grandeurs caractéristiques de la zone d'interaction, à savoir son épaisseur dynamique, son épaisseur thermique et le taux d'étirement. Nous avons mis en évidence l'influence du rapport des vitesses des deux jets sur la position du plan de stagnation
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Books on the topic "Laser - fil":

1

J, Mazumder, North Atlantic Treaty Organization. Scientific Affairs Division., and NATO Advanced Study Institute on "Laser Processing: Surface Treatment and Film Deposition" (1994 : Sezimbra, Portugal), eds. Laser processing: Surface treatment and film deposition. Dordrecht: Kluwer Academic Publishers, 1996.

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Metev, S. M. Laser-assisted microtechnology. 2nd ed. Berlin: Springer, 1998.

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Metev, S. M. Laser-assisted microtechnology. Berlin: Springer-Verlag, 1994.

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1958-, Boyd Ian W., Haruna Masamitsu 1945-, Society of Photo-optical Instrumentation Engineers., and American Physical Society, eds. Laser-assisted fabrication of thin films and microstructures: 17-19 August 1993, Québec, Canada. Bellingham, Wash., USA: SPIE, 1994.

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Mazumder, J., O. Conde, R. Villar, and W. Steen, eds. Laser Processing: Surface Treatment and Film Deposition. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0197-1.

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Mazumder, J. Laser Processing: Surface Treatment and Film Deposition. Dordrecht: Springer Netherlands, 1996.

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J, Ehrlich Daniel, and Tsao Jeffrey Y, eds. Laser microfabrication: Thin film processes and lithography. Boston: Academic Press, 1989.

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Edward, Gorman. Several Deaths Later. New York: St. Martin's Press, 1988.

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Mutalib, H. Abdul. A critical evaluation of tear film measurement using laser interferometry. Manchester: UMIST, 1997.

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Chia-erh, Chʻen, Beijing Institute of Modern Physics., and Beijing FEL Seminar (1988 : Beijing University), eds. Free electron lasers: Proceedings of the Beijing FEL Seminar, Beijing University, 11-23 August, 1988. Singapore: World Scientific, 1989.

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Book chapters on the topic "Laser - fil":

1

Weik, Martin H. "thin-film laser." In Computer Science and Communications Dictionary, 1778. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19524.

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Arlinghaus, Heinrich F. "Laser Secondary Neutral Mass Spectrometry (Laser-SNMS)." In Surface and Thin Film Analysis, 179–89. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527636921.ch10.

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Boyd, Ian W. "Thin Film Growth by Pulsed Laser Deposition." In Laser in der Technik / Laser in Engineering, 349–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-08251-5_80.

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Lei, Wei-Sheng, and Zhishui Yu. "Laser Induced Thin Film Debonding for Micro-Device Fabrication Applications." In Laser Technology, 299–324. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119185031.ch8.

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Weik, Martin H. "thin-film laser element." In Computer Science and Communications Dictionary, 1778. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19525.

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Kandula, Soma Sekhar V. "Laser Based Adhesion Testing Technique to Measure Thin Film-Substrate Interface Toughness." In Laser Technology, 269–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119185031.ch7.

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Schneider, Christof W., and Thomas Lippert. "Laser Ablation and Thin Film Deposition." In Laser Processing of Materials, 89–112. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13281-0_5.

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Bäuerle, Dieter. "Thin-Film Formation by Laser-CVD." In Laser Processing and Chemistry, 429–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17613-5_19.

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Bäuerle, Dieter. "Thin-Film Formation by Laser-CVD." In Laser Processing and Chemistry, 338–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-662-03253-4_19.

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Steen, W. M. "Laser Surface Treatment." In Laser Processing: Surface Treatment and Film Deposition, 1–19. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0197-1_1.

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Conference papers on the topic "Laser - fil":

1

Jewell, J. L., W. S. Fu, R. P. Bryan, S. E. Swirhun, W. E. Quinn, and G. R. Olbright. "Surface-Emitting Laser Diode Arrays (Lase-Arrays™) - Multi-Channel Applications in Optical Storage." In Optical Data Storage. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/ods.1994.md2.

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Consumers of optical storage products strongly desire optical disk and tape drives with high data transfer rate for many applications including: multimedia, archival storage, software distribution and reconnaissance. In order to increase the data rate at which information is read from or written to optical storage media, parallel multi-channel systems have been proposed or demonstrated [1,2]. Our approach aims to increase data transfer rates by more than an order of magnitude through multi-channel drives having minimal effect on the hardware and on the cost of the product. The emergence of vertical-cavity surface-emitting laser arrays (Lase-Arrays™), [3,4] enables unique multi-channel configurations for high-data-rate parallel optical reading and writing of information. Lase-Arrays represent a new class of semiconductor laser diodes which, unlike conventional edge-emitting semiconductor laser diodes, are directly "printed" in ID and 2D arrays using standard III-V compound semiconductor circuit fabrication techniques. Fig. la shows a photograph of a portion of a 2x32 Lase-Array. Lase-Arrays emit light perpendicular to the plane of the wafer, as compared to edge-emitting laser diodes which emit light in the plane of the wafer. Also, unlike edge-emitters, Lase-Arrays have circularly-symmetric, aberration-free beams. Arrays of microlenses are straightforwardly integrated to Lase-Arrays (Fig. la) to enable optical mappings which are impossible with conventional macroscopic optics, for example, mapping an array of widely-spaced, low-fill-factor lasers to an array of closely-spaced, densely-packed spots. This mapping is ideal for multi-channel optical storage applications using either disks or tape as the storage medium.
2

Saito, Jun, and Hideki Akasaka. "Direct Overwritable Magneto-Optical Exchange Coupled Multilayered Disk by Laser Power Modulation Recording." In Optical Data Storage. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/ods.1991.mc1.

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In 1987, we presented a direct overwritable Magneto-Optical exchange coupled multilayered (DOW-MO-ECML or DOW) disk by laser power modulation recording.1) The direct overwriting method could be summarized as follows. (a) The ECML thin film has at least two layers as shown in Fig. 1. The upper layer, memory layer has higher coercivity at ambient temperature and lower Curie temperature than the lower layer, writing layer. (b) Laser power is modulated as shown in Fig. 2. Ph irradia tion records new marks. Pl irradiation erases prerecorded marks. Pr means reading power. (c) The initializing field, Mini is applied to the disk in ad dition to the bias field, Hb for recording.
3

Sanders, Virgil E., and Brian E. Newnam. "Use of VUV/XUV Free-Electron Lasers in the Study of Defects in Amorphous Optical Materials." In Free-Electron Laser Applications in the Ultraviolet. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/fel.1988.thc3.

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We propose to use an intense, coherent, light source in the VUV and XUV spectral regions, such as the proposed Los Alamos free-electron laser (FEL) user facility, to study radiation-induced defects in amorphous materials. The optical materials of interest are those associated with thin-film coatings, windows, and lenses used in most UV and visible lasers. The life, reliability, and performance of these lasers may be significantly affected by the UV environment of the laser. Examples include FELs themselves which generate harmonics of the fundamental lasing wavelength far into the VUV. Other examples include most, if not all, gas lasers where the optics, particularly thin-film coatings, are exposed to the gas plasma discharge.
4

Corbalán, R., M. Arjona, F. Laguarta, J. Pujol, and R. Vilaseca. "Dynamic Instabilities in Optically Pumped Lasers with Linearly Polarized Pump and Generated Laser Beams." In Nonlinear Dynamics in Optical Systems. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/nldos.1990.ld305.

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We analyze the influence of light polari­zation on the dynamics of coherently pumped lasers using a single-mode ring laser model which considers a homogeneously broadened four-level medium. As typical in FIR laser experiments, we consider linearly polarized pump and generated laser beams. Phase diagrams as a function of cavity detuning and amplitude of the resonant pump field have been obtained, which show domains of stationary, oscillatory and chaotic output. We show that the laser is much more stable when the polarizations of the pump and generated laser beams are parallel than when they are orthogonal. In the later case the laser exhibits Lorenz-like dynamics at a reduced instability pump threshold.
5

Kandidov, Anton V., Boris I. Seleznev, A. S. Kovalev, A. A. Blyablin, and A. M. Popov. "Low-threshold YBCO thin film removal." In Europto High Power Lasers and Laser Applications V, edited by Eckhard Beyer, Maichi Cantello, Aldo V. La Rocca, Lucien D. Laude, Flemming O. Olsen, and Gerd Sepold. SPIE, 1994. http://dx.doi.org/10.1117/12.184709.

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6

Jeys, T. H. "Sum Frequency Mixing of two Tunable Nd:YAG Lasers for Sodium Fluorescence Lidar Measurements*." In Laser and Optical Remote Sensing: Instrumentation and Techniques. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/lors.1987.wa3.

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An interesting coincidence of nature is that by sum frequency mixing the output of two appropriately tuned Nd:YAG lasers, the sum radiation may be made resonant with the sodium D2 transition wavelength. By exploiting this coincidence we have generated high power pulsed sodium resonance radiation. We plan to use this new source of sodium resonance radiation for characterizing the sodium layer in the earth's atmosphere. Figure 1 shows the cw wavelength tuning curves of the two Nd:YAG laser transitions. The 1.064 pm laser has a tuning range of about 6Å while the 1.319 μm laser has a tuning range of about 4Å. By operating the lasers at the wavelengths indicated by the arrows in Fig. 1 it is possible to generate sodium resonance radiation. In addition, it is possible to easily tune the sum radiation over the complete sodium Doppler absorption profile.
7

Ozawa, Masafumi, and Akira Ishibashi. "Room Temperature CW Emission of II-VI Diode lasers." In Optical Data Storage. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/ods.1994.md4.

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ZnMgSSe-based II-VI semiconductors are promising materials for making blue and green laser diodes (LD). Haase et al. reported the first demonstration of ZnCdSe quantum well lasers[1]. Room temperature (RT) continuous-wave (CW) operation was the next milestone for practical usage of blue and green LDs. Recently we have achieved RT CW operation of ZnCdSe/ZnMgSSe lasers. To realize RT operation, lattice-matched heterostructures with sufficiently large electrical and optical confinement are essential. These conditions can be satisfied with employing a novel ZnMgSSe alloy, which was originally developed by Okuyama et al.[2], for cladding layers. This alloy offers a wide range of bandgap energy from 2.7 to ~4 eV, while maintaining lattice matching to a GaAs substrate, which gives us the flexibility in designing the LDs. We fabricated a separate confinement heterostructure (SCH), having ZnMgSSe cladding layers, ZnSe waveguiding layers, and a ZnCdSe multiple-quantum-well(MQW) active layer. The structure shown in fig.1 was grown on a (001) n-GaAs substrate by molecular beam epitaxy(MBE). Figure 2 shows the light output against current characteristics at RT measured under continuous and pulsed-current conditions. The CW threshold current (Ith) is 45 mA corresponding to a threshold current density of 1.5 kA/cm2. The typical laser threshold voltage is 17 V. The lasing wavelength is 523.5 nm under continuous operation as shown in figure 3. We have also observed blue stimulated emission at 489.9 nm (figure 4). This blue laser has the same structure as the blue-green laser except for employing a less Cd containing active layer and a p-ZnTe/p-ZnSe MQW layer as a p-contact layer in order to reduce the operating voltage. This MQW layer leads to the operating voltage of 6.3 V.
8

Bagdasaryan, H. V., T. E. Meliksetyan, and G. R. Sargsyan. "The thin-film laser-active quasi-waveguide as a new type of radiating system." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.ctus1.

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The thin-film active quasi-waveguide (Fig. 1) is a system which consists of a thin (up to several dozen wavelengths) active layer inserted between two passive dielectric media with refractive indexes higher than those of the active medium. Therefore this system has only leaky modes. In the active quasi-waveguide the role of mirrors of the ordinary resonator is carried out by the boundaries of the active layer with the coefficient of reflection determined by Fresnel's formulae. The order of interference determines the modes of quasi-waveguide radiation analogous to transverse modes of an ordinary laser. Each wavelength in modes is being radiated under a different angle; that is, the quasi-waveguide is an active dispersion system, which permits the generation wavelength to be tuned smoothly by turning only the external mirrors. The possibility of light generation in active quasi-waveguide is investigated in Ref. 1. We have realized a double-frequency quasi-waveguide laser with independent frequency tuning in spatially separated laser beams using two external mirrors. Another important application of the quasi-waveguide is its operation as a thin-film amplifier. In this case radiation with divergence close to diffraction divergence was obtained for incident signal of arbitrary divergence. The signal was injected into the quasi­waveguide system both below and above threshold.
9

Mulholland, Matthew M., Shida Tan, Muhammad Usman Raza, Matthew Levesque, Jordan Furlong, Christopher G. L. Ferri, Robert Chivas, Michael DiBattista, and Scott Silverman. "Laser Chemical Etching Trench Refinements for Backside Debug Journey to the Circuit Layer." In ISTFA 2020. ASM International, 2020. http://dx.doi.org/10.31399/asm.cp.istfa2020p0357.

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Abstract The journey to the circuit layer will be described by first discussing baseline processes of laser assisted chemical etching (LACE) steps before the focused ion beam (FIB) workflow. These LACE processes take advantage of a dual 532 nm continuous wave (CW) and pulse laser system, however limitations and overhead that is transferred over to the FIB operator will be demonstrated. Experiments show an additional third 355 nm ultraviolet (UV) pulse laser process introduction into the workflow can further reduce the remaining silicon thickness (RST) relieving FIB overhead. In addition, complex pulse laser patterning techniques will show a refinement to nonuniform produced silicon. Finally, other pulse laser patterning techniques such as polygon etch capability will allow laser etching around and in-between features to enhance circuit layer accessibility for debug operations.
10

Leake, Kaelyn, Alexandria Carter, and Hank Yochum. "Layer by layer thin film fabrication with in-process laser patterning." In Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XIX, edited by Wounjhang Park, André-Jean Attias, and Balaji Panchapakesan. SPIE, 2022. http://dx.doi.org/10.1117/12.2632090.

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Reports on the topic "Laser - fil":

1

Holdren. L51934 Feasibility of Nd-Yag Laser-Arc Welding Processes for Girth Welding. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2002. http://dx.doi.org/10.55274/r0010632.

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Laser beam welding (LBW) has become standard in many high-production and critical applications where the return on investment can be quickly realized due to the process' inherent efficiency in terms of weld penetration and travel speed. Also, some promising work has been done internationally related to the use of hybrid laser/arc welding (HLAW) for some applications (primarily shipbuilding), so this process variation was also included in the study. However, virtually all of the current LBW or HLAW applications are considered 'factory' applications, and therefore do not represent the logistical challenge associated with bringing laser technology to on or offshore pipeline welding operations. This project was aimed at studying the feasibility of overcoming those logistical challenges in order to realize the potential cost savings of applying this high production process. This study was limited to the application of Nd:YAG lasers (which can be delivered via fiber-optic cable) since the logistics of incorporating higher power CO2 lasers was felt to be impractical. The focus of the project was to study the potential productivity of the LBW and HLAW processes in terms of the thickness of material that could be welded in a single pass at a given travel speed. Additionally, the robustness of the process was determined using weld joints with less than ideal fit up. Potential feasibility of the processes were then determined by considering both the practical aspects of their application as well as the economic justification.
2

Sprangle, Phillip, Joseph Penano, and Bahman Hafizi. Laser-Pumped Coherent X-Ray FEL. Fort Belvoir, VA: Defense Technical Information Center, November 2008. http://dx.doi.org/10.21236/ada491178.

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Huang, Chengkun, Brian J. Albright, Sasikumar Palaniyappan, and Lin Yin. Laser ion acceleration in thin foil target. Office of Scientific and Technical Information (OSTI), April 2014. http://dx.doi.org/10.2172/1129819.

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4

Wilson, T. A compact, high-powered far-infrared (FIR) laser. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/6814270.

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Mosolf, J. G., and A. Kylander-Clark. U-Pb geochronology data from rock samples collected in the Dillon and Wisdom 30' x 60' quadrangles, western Montana, 2021-2022. Montana Bureau of Mines and Geology, October 2023. http://dx.doi.org/10.59691/cbjj3933.

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Mosolf, J. G., and Kylander-Clark A. U-Pb geochronology data from rock samples collected in the Dillon, Hamilton, Philipsburg, Townsend, and Wisdom 30' x 60' quadrangles, western Montana, 2020-2021. Montana Bureau of Mines and Geology, October 2023. http://dx.doi.org/10.59691/fiis4856.

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This file provides U-Pb zircon laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) geochronology data for igneous, metamorphic, and sedimentary rock samples collected in western Montana.
7

Mosolf, J. G., D. T. Brennan, and A. Kylander-Clark. LA-ICPMS U-Pb geochronology data from rock samples collected in the Dillon, Ennis, Gardiner, Hamilton, Hebgen Lake, and Wisdom 30' x 60' quadrangles, western Montana, 2022-2023. Montana Bureau of Mines and Geology, October 2024. http://dx.doi.org/10.59691/zqri9918.

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This file provides U-Pb zircon laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) geochronology data from igneous, sedimentary, and metamorphic rock samples collected in western Montana.
8

Burger, A., and S. A. Payne. Growth of thin film for waveguide laser: Development of chromium doped Zn chalcogenides as efficient, widely tunable mid-infrared lasers. Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/666135.

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Peyghambarian, N., N. R. Armstrong, H. Hall, A. Padias, and S. Mazumdar. An Organic Thin Film Laser Diode: A Novel Light Source. Fort Belvoir, VA: Defense Technical Information Center, November 1994. http://dx.doi.org/10.21236/ada289007.

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10

Fernandez, Felix E. Pulsed Laser Deposition of Thin Film Material for Nonlinear Waveguides. Fort Belvoir, VA: Defense Technical Information Center, October 1994. http://dx.doi.org/10.21236/ada290789.

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