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Relevant bibliographies by topics / Ultra violet (UV)

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Academic literature on the topic 'Ultra violet (UV)'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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Journal articles on the topic "Ultra violet (UV)"

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NERGUIZIAN, Vahé, Mustapha RAFAF, Muthukumaran PACKIRISAMY, and Ion STIHARU. "ULTRA VIOLET DETECTION SENSORS." International Journal of High Speed Electronics and Systems 16, no. 02 (June 2006): 583–88. http://dx.doi.org/10.1142/s0129156406003862.

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This article presents an innovative and creative approach to detect harmful level of Ultra Violet light on human skin. Different commercial UV sensors are evaluated for comparison. The comparison is made for performance, cost and dimension. The proposed affordable UV sensor solutions are presented using chemical and MEMS/MOEMS technologies. The UV dynamic sensor detects the harmful level of UV and informs the user about the eventual UV radiation risk. The proposed two solutions consider chemical material for UV detection and different actuation mechanism to inform the UV harmful level to the user. These sensors are non disposable and are packaged for visual monitoring (without battery) and acoustic operation (using a battery).

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WAKABAYASHI, Kazutami. "UV (Ultra Violet) ・VR (Visible Radiation) Cured Adhesives." Journal of the Japan Society of Colour Material 87, no. 10 (2014): 367–72. http://dx.doi.org/10.4011/shikizai.87.367.

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Muhamed, S. Z., Mohamad Hafiz Mamat, N. D. Md Sin, and Mohamad Rusop. "Ultra-Violet Photoresponse Characteristics of Nanostructured Al Doped Zinc Oxide Thin Films Based Ultra-Violet Sensor." Advanced Materials Research 667 (March 2013): 569–72. http://dx.doi.org/10.4028/www.scientific.net/amr.667.569.

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Nanostructured Aluminum (Al) doped Zinc Oxide (ZnO) thin films based ultra-violet (UV) sensors were prepared on glass substrates using immersion technique at different immersion times. Surface morphology results as characterized by scanning electron microscope (SEM) show that all prepared nanostructured Al doped ZnO were in form of nanorod structures with the typical diameter in the range of 60-250nm and the length within several micrometers. Photocurrent measurement results of the fabricated UV photoconductive sensor from nanostructured Al doped ZnO thin film immersed at 1 hr gives the highest photocurrent intensity compared with other samples.

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Asri, Mahanani Tri, and Isnawati Isnawati. "DAYA PATOGENESITAS Helicoverpa armigera Nuclear Polyhedrosis Virus HaNPV SETELAH TERKENA RADIASI SINAR ULTRAVIOLET." Berkala Penelitian Hayati 6, no. 1 (December 31, 2000): 65–70. http://dx.doi.org/10.23869/bphjbr.6.1.20008.

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This research is about pathogen capacity of the Helicoverpa armigera nuclear Polyhedrosis Virus (HaNPV) after irradiation by ultra violet (UV) light. The HaNPV is the one kind of the virus which attack the insect Helicoverpa armigera-attacker the some species of the crop life tobacco, cotton, potato, tomato. Because of that the HaNPV can be used as the biological control of the pest. Some researcher stated that the pathogen capacity of the HaNPV is decrease if the virus was expose in the ultra violet (UV) light. Because of the fact the virus in not useful as the biological control of the pest in the land corp. This research to test the statement. Laboratory experimental was done to tested the pathogen capacity of the HaNPV after irradiation treatment by the ultra violet light. The intensity of the UV light in this experiment were 28.7 lux, 97.3 lux, and 127.4 lux with the lighting period were 0, 1, 3, 6, 9, 12, and 15. The result of the research stated that the pathogen capacity of the HaNPV was not influenced by ultra violet light. So the virus is still useful as the biological control of the pest in the land crop.

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Yu, Hak Ki. "Ultra Violet (UV) Sensor based on Oxide Ceramic Materials." Ceramist 22, no. 1 (March 31, 2019): 27–35. http://dx.doi.org/10.31613/ceramist.2019.22.1.03.

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Zeng, Wenbo, Shaopeng Wu, Ling Pang, Haohao Chen, Jinxuan Hu, Yihan Sun, and Zongwu Chen. "Research on Ultra Violet (UV) aging depth of asphalts." Construction and Building Materials 160 (January 2018): 620–27. http://dx.doi.org/10.1016/j.conbuildmat.2017.11.047.

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Said, M. A., Brenda Dingwall, A. Gupta, A. M. Seyam, G. Mock, and T. Theyson. "Investigation of ultra violet (UV) resistance for high strength fibers." Advances in Space Research 37, no. 11 (January 2006): 2052–58. http://dx.doi.org/10.1016/j.asr.2005.04.098.

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Kumar Yadav, Pradeep, Kamal Singh, and Jitendra Bhaskar. "Design and Development of Ultra Violet Curing Based 3-D Printer." INTERNATIONAL JOURNAL OF ADVANCED PRODUCTION AND INDUSTRIAL ENGINEERING 5, no. 3 (July 5, 2020): 16–22. http://dx.doi.org/10.35121/ijapie202007343.

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UV light technology-based 3D printer is commonly known as Stereolithography (SLA) 3D printer. Photopolymers in liquid form is cured under the beam of UV light to form layer by layer 3D model. A beam of light is pointed that cures a limited area and takes a long time to 3D print a part. An effort has been made in this work to design and fabricate a mask and UV light-based 3D printer for printing 3D models from a liquid photopolymer resin. Samples were also printed to evaluate the performance of this printer. Performance tests were very positive to make this model a commercial machine for printing models for medical applications.

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Dong, Tian, Jian Hua Tong, Chao Bian, Jizhou Sun Sun, and Shan Hong Xia. "Thermal Assisted UV Digestion Utilizing Nano-TiO₂ Photocatalyst for the Detection of Total Phosphorous." Key Engineering Materials 562-565 (July 2013): 964–69. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.964.

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This work presents a novel thermal assisted ultra-violet (UV) photocatalysis oxidation method for total phosphorus (TP) detection. A 365nm wavelength UV light was used as the UV light source, and the TiO2 particles, immobilized on silicon wafer, were used as the catalyst. The sodium glycerophosphate was digested as the typical compound of TP. The digested samples were determined by spectrophotometry after the phosphomolybdenum blue reaction. The catalyst can be used repetitively with long-term stability in this work. For the photocatalysis digestion process under room-temperature, when the reaction time reached 120min, the conversion rates were 92.31% and 93.66% for 1mg/L and 4mg/L of C3H7Na2O6P solutions, respectively. And conversion rates were 95.48% and 99.37% respectively for thermal assisted ultra-violet (UV) photocatalysis digestion process at the condition of 30min and 60°C. Compared with the conventional thermal digestion method and photocatalysis digestion method for TP detection, this thermal assisted UV digestion method can greatly decrease the digestion time and enhance the efficiency.

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Abdullah, Nur Munirah, A. Z. M. Rus, M. F. L. Abdullah, and Hanani Abd Wahab. "Electrical profile of ultra violet (UV) curable renewable polymer graphite (PG) composites." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 1 (March 1, 2020): 459. http://dx.doi.org/10.11591/ijpeds.v11.i1.pp459-465.

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<span>The electrical profiles of the renewable polymer graphite (PG) composites upon ultra violet (UV) curing were investigated. Renewable PG films were prepared by mixing with varying weight percent of graphite (with an increment of 5 wt. % of prepared graphite) up to 30 wt.% and crosslinker. Then, the composites solution was slip casted and cured upon stimulated UV irradiation (UV accelerated weathering tester) at different time exposure (up to 1000 hours) was applied. Small changes on the functional groups of the composites were observed due to UV exposure time by Fourier Transform Infrared Spectroscopy (FTIR). Suggesting that chemical crosslink and chain scissions occurred within renewable polymer graphite composites. Further electrical profile through two point probe and four point probe method recorded visibly fluctuating values for both resistivity and conductivity within its composites range. Proposed here that the removal of organic contaminants and weak materials form both renewable polymer and graphite particles through the UV curing may have an effect on the formation of conductive network stability. </span>

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Dissertations / Theses on the topic "Ultra violet (UV)"

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Elgamil, Jamal E. M. "Development and optimisation of UV microwave germicidal lamp." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266312.

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Jones, Allison Elizabeth. "A spectroscopic study of sunscreens." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4261/.

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Exposure to UV radiation is known to result in the development of skin cancer and the use of protectants m the form of topically applied sunscreens is becoming widespread. The compounds used within sunscreen formulations are subject to stringent tests and must be approved for use by such bodies as COLIPA (EC), or the FDA (U.S.). Despite these testing procedures the photochemical and photophysical properties of many of the active ingredients are poorly understood and not well documented. This study presents the results of detailed photophysical investigations of two sunscreen agents. Menthyl anthranilate is currently approved for use m commercially available formulations by the FDA, and N-acetyl-menthyl anthranilate has been synthesised as an analogue of N-acetyl-homomenthyl anthranilate, a compound approved for use by COLIPA until 1989. This work has highlighted some disturbing properties of these compounds. Following absorption of light both compounds fluoresce m UV-A region. Population of the triplet state also occurs to a significant extent, producing long lived species which are readily quenched by oxygen generating singlet oxygen, a potentially damaging species that has been linked to DNA damage. Furthermore, the triplet state energy of N-acetyl-menthyl anthranilate has been shown to be -315 kJmol(^-1)"', high enough to sensitise the formation of thymine dimers m the skin, another potential source of DNA damage. A thorough understanding of the behaviour of sunscreen formulations m contact with skin is vital. In vivo studies are made difficult due to restrictions in the sampling methods for currently used spectroscopic techniques such as UV and fluorescence. This work demonstrates the use of infixed spectroscopy, utilising an ATR probe and a flat ATR crystal, to analyse sunscreen formulations present on skin at normal usage levels. The technique has been used successfully to identify the individual active components within the formulations, probe the water-resistance properties and monitor changes that occur within the formulations following irradiation. A relationship between the IR absorbance values and Sun Protection Factor (SPF) values of any given formulation has been demonstrated and this has been used to test the water resistance claims of the manufacturers.

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Howie, Wendy Helen. "Molecular structure and predissociation dynamics studied using absorption spectroscopy and ion imaging." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364886.

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Alexander, Stefan. "Phosphor Coated UV-Responsive CCD Image Sensors." Thesis, University of Waterloo, 2002. http://hdl.handle.net/10012/921.

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Typical CCD image sensors are not sensitive to Ultra-Violet (UV) radiation, because the UV photons have a penetration depth of 2nm in the ~1µm thick polysilicon gate material. An inorganic phosphor coating was developed previously (by Wendy Franks et al [1, 2]) that was shown to be a viable solution to creating a UV-sensitive CCD image sensor. The coating absorbs incident UV radiation (250nm) and re-emits it in the visible (550-611nm) where it can penetrate the gate material. This coating was deposited using a settle-coat type deposition. Improved coating techniques are presented here. These include a commercial coating from Applied Scintillation Technologies (AST), a Doctor-Blade coating, e-beam deposition, and laser ablation. The properties of the coating, and of the coated sensors are presented here. Tests performed on the sensors include Quantum Efficiency, Photo-Response Non-Uniformity, Contrast Transfer Function, and Lifetime. The AST coating is a viable method for commercial UV-responsive CCD image sensors. The Doctor-Blade coatings show promise, but issues with clustering of the coating need to be resolved before the sensors can be used commercially. E-beam deposition and laser ablation need further research to provide a viable coating.

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Liang, He. "Control of surface interactions with ultra-violet/ozone modification at polystyrene surface." Thesis, Robert Gordon University, 2014. http://hdl.handle.net/10059/948.

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Surface interactions and reactivity are of critical importance in current biomedical technologies, for example, satisfactory cell attachment and long term viability are essential for optimal in vitro tissue culture and for successful implantation and stability of cardiovascular medical implants such as stents and grafts. To achieve this, the control of fundamental forces and the resulting molecular interactions between the relevant surface and absorbing or adhering species in the physiological system is compulsory. This work utilised the surface modification technique of Ultra-Violet/ Ozone to improve the polystyrene biocompatibility by oxidising the surface with additional polar oxygen functional groups without damaging the surface bulk property. UV/Ozone treatment utilised throughout this study produced controllable oxygen functional groups and led to an increase in surface atomic oxygen level to 41% on unwashed and 35% on washed polystyrene surfaces, washing resulted in the removal of low molecular weight oxidised materials. Surface energy was increased by the addition of oxygen functional groups with the combination of alcohol (C-OR), carbonyl (C=O) and carboxyl (O-C=O); Saturation state was reached after 300s of UV/Ozone treatment where no more oxygen functionalities were incorporated to the surface. Moreover, UV/ozone treatment did not show an effect on the surface roughness studied by atomic force microscopy. The biological responses of human endothelial umbilical vein cells (HUVECs) were studied at the different level of UV/Ozone treated surfaces. HUVEC adhesion, proliferation and migration were significantly improved by the treatment compared to untreated and tissue cultures plastics (TCPs). Among the levels of UV/ozone treatment studied, 120s and 180s were found to be the most effective and HUVEC proliferation did not seem to be affected by the high level of oxygen. Similarly, the surface oxygen level did not affect the migration over UV/Ozone treated over 60s. Hypoxic condition significantly increased HUVECs migration on UV/Ozone treated, TCPs and untreated surfaces compared to normoxia, the oxygen rich surface did not favour to HUVECs that underwent regulatory process to enable the cells to increase migration. Under laminar flow conditions, HUVECs did not only grow, proliferate and migrate but also showed standard responses on UV/Ozone treated polystyrene surface. A decrease in cell size was observed at all shear stress intensities studied (1 dyn/cm2, 9 dyn/cm2 and 25 dyn/cm2) and the decrease was more obvious at higher shear stress. High shear stress intensity also induced high cell turnovers, which may be related to air bubbles induced at high flow rate. The overall findings of this study clearly illustrate that UV/Ozone surface treatment can be applied on polystyrene to improve human endothelial cells functionalities in term of adhesion, proliferation and migration in both static and laminar flow environment.

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Turnbull, David J. "Development of an improved shade environment for the reduction of personal UV exposure." University of Southern Queensland, Faculty of Sciences, 2005. http://eprints.usq.edu.au/archive/00001519/.

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The research from this project has quantified the solar UV environment beneath and surrounding typical local council public shade structures. The effects of changing seasons, atmospheric conditions, structural modifications and surrounding plant life on diffuse UV have been quantified. Strategies to improve current shade structures, so as to significantly reduce the levels of diffuse UV reaching the human body in the shade, have also been developed. For the shade structures used in this research it was found that ultraviolet protection factors ranged from 1.5 to 18.3 for a decreasing solar zenith angle. Correlations have been found relating diffuse erythemal UV to UV in the shade for clear skies and a changing solar zenith angle. The effect of changing atmospheric ozone levels on diffuse erythemal UV levels has been quantified. UV exposures were assessed for a decrease in scattered UV beneath specific shade structures by the use of two types of protection, namely, side-on polycarbonate sheeting and evergreen vegetation. Broadband radiometric and dosimetric measurements conducted in the shade of a scale model shade structure, during summer and winter, showed significant decreases in exposure of up to 65% for summer and 57% for winter when comparing the use and non-use of polycarbonate sheeting. Measurements conducted in the shade of four shade structures, with various amounts of vegetation blocking different sides, showed that adequate amounts and positioning of vegetation decreased the scattered UV in the shade by up to 89% when compared to the shade structure that had no surrounding vegetation. This research shows that major UV reduction could be achieved by the ‘shade creation and design industry’, and that shade guidelines should be updated as soon as possible.

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Biondo, Stéphane. "Simulation, réalisation et caractérisation de jonction p+n en SiC-4H, pour la photodétection de rayonnement UV." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4340.

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Le SiC est un matériau semi-conducteur à large bande d'énergie interdite dont les très bonnes caractéristiques électriques et thermiques en font un candidat idéal pour la fabrication de composants dans le domaine de la puissance et des détecteurs de rayonnement. En particulier, la réalisation de détecteurs UV est très attendue dans les domaines suivants : détection d'incendies, imagerie de surface, astronomie, médecine, militaire… Les photodétecteurs à base de semiconducteurs à large bande interdite permettent d'obtenir une très bonne sélectivité dans l'UV, sans avoir à utiliser de filtres optiques. Le SiC semble être le matériau le plus prometteur, grâce à sa bonne stabilité chimique, mécanique et thermique, ce qui représente un avantage pour opérer en environnement extrême. Cependant le dopage du SiC nécessite un savoir-faire très particulier (implantation à chaud, recuit à haute température, forte dynamique de chauffe…). Nous nous sommes proposés dans un premier temps de réaliser par implantation (ionique et plasma) des composants tests, permettant d'accéder aux caractéristiques des jonctions. Le cas des jonctions implantées n+p et p+n a été étudié. Après l'optimisation des paramètres technologiques de l'implantation et du recuit associé, la fabrication de détecteurs de rayonnement basés sur la diode Schottky ou la diode p.n a été mise en œuvre. Une étape de simulation de ces composants a été effectuée sur le logiciel Sentaurus Device (Synopsys). Les caractérisations de ces détecteurs ont montré une meilleure sensibilité pour les diodes implantées Bore par plasma
Silicon carbide is a wide band-gap semiconductor with electrical and thermal characteristics particularly suitable for high power devices and radiation sensors. The realisation of UV detectors is mainly useful in the following sectors: fire detection, surface imagery, astronomy, medicine, military... The photodetectors based on wide band-gap semiconductors allow to get a very good selectivity, without using optical filters. Silicon carbide seems to be the most promising material, due to its chemical, mechanical and thermal stability, inducing a reliable behaviour in extreme environment. However SiC doping requires a distinct know-how (hot ion implantation, high temperature annealing, rapid heating-rate…). Test devices have been firstly processed by using ion implantation and plasma, allowing evaluating p+n or n+p junction characteristics. After the optimisation of the technological parameters of implantation and related annealing, the realisation of radiation detectors based on Schottky or p.n diodes has been carried out. The electrical simulations of such devices were performed with Sentaurus Devices program (Synopsys). The characteristics of the devices proved an improvement with the Boron-plasma implantation

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Onye, Jermain Eze. "Atmospheric Corrosion of Zn by NaCl, SO2, NH3, O3, and UV Light." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408822401.

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Maziere, Audrey Alexandra. "Structure électronique des hétérocycles BN-aromatiques." Thesis, Pau, 2014. http://www.theses.fr/2014PAUU3015.

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Depuis leurs découvertes dans les années 60 par Dewar, les composés BN-hétérocycliques ont subi un développement croissant, s’accentuant pendant la dernière décennie. Ce travail de thèse mené en collaboration avec le Pr S-Y LIU de Boston Collège (États-Unis) et le Pr L. WEBER de l’Université de Bielefeld (Allemagne), a permis la synthèse, ainsi que la caractérisation par spectroscopie photoélectronique à rayonnement UV de nouveaux systèmes. Dans une première partie représentée par les chapitres II, III et IV, nous abordons l’étude de la structure électronique des composés suivants : 1,2-dihydro-1,2-azaborine (1), N-Me-1,2-BN-toluene (2), N-Me-1,3-BN-toluene (3), 1,2-dihydro-1-aza-2-boranaphtalene (4), 1,2-dihydro-1-aza-2-boranthracene (5), 1,2-dihydro-1-aza-2-boranthracene (6), 1,2-dihydro-1-aza-2-boraphenanthrene (7), 1,3,2-benzodiazaborole (8), 1,9,8-benzodiazaborole (9), N-tert-butyl[1,3,2]diazaborolo[1,5-a]-pyridine (10), 1,3,2-trihydro[1,3,2]diazaborolo[1,5-a]-pyridine (11). Afin de compléter les propriétés physico-chimiques de ces nouveaux systèmes et d’aider à l’interprétation des spectres photoélectroniques, l’utilisation de calculs quantiques tels que la théorie de la fonctionnelle de la densité (DFT), la théorie fonctionnelle de la densité en fonction du temps (TD-DFT), la fonction de Green (OVGF), la méthode du troisième ordre partiel (P3), ou encore l’interaction de configuration (SAC-CI) ont été utilisées. Dans le Chapitre V, nous présentons une étude comparative entre les énergies ionisations théoriques et expérimentales
Since the Dewar’s discovering in 60 years, the BN-heterocycles has experienced an important development during the last decade. This thesis presents our work on the synthesis and on the electronic structure characterization by Ultra-Violet photoelectron spectroscopy (UV-PES), followed in collaboration with the Pr SY LIU from the Boston College (USA) and the Pr L. WEBER from the University of Bielefeld (Germany). The first part corresponding to the chapter II, III and IV, describe the electronic structure analysis of: 1,2-dihydro-1,2-azaborine (1), N-Me-1,2-BN-toluene (2), N-Me-1,3-BN-toluene (3), 1,2-dihydro-1-aza-2-boranaphtalene (4), 1,2-dihydro-1-aza-2-boranthracene (5), 1,2-dihydro-1-aza-2-boranthracene (6), 1,2-dihydro-1-aza-2-boraphenanthrene (7), 1,3,2-benzodiazaborole (8), 1,9,8-benzodiazaborole (9), N-tert-butyl[1,3,2]diazaborolo[1,5-a]-pyridine (10), 1,3,2-trihydro[1,3,2]diazaborolo[1,5-a]-pyridine (11). In order to provide more information on the physical chemistry properties and to interpret the photoelectron spectra, the quantum chemical calculations of ionization energies have been followed using the Density Functional Theory (DFT), the Time-Dependent Density Functional Theory (TD-DFT), the Outer Valence Green’s Function (OVGF), the Partial third order (P3), the Symmetry Adapted Cluster-Configuration Interaction (SAC-CI). Moreover, the comparative analysis of theoretical and the experimental ionization energies are presented

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Fiori, Costantino. "Oxydation du silicium et modification de l'ordre à courte distance dans les oxydes de silicium induits par un rayonnement laser ultra violet." Grenoble 1, 1986. http://www.theses.fr/1986GRE10131.

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Etude par spectrometrie auger de la structure de la surface de si(111) faiblement recouverte d'oxygene sec. L'irradiation par un faible flux de photons uv induit d'importants rearrangements atomiques dans la phase adsorbees avec formation d'une monocouche tres desordonnee de sio::(2) se transformant en sio::(2) amorphe stable apres un recuit thermique a 949 k. L'irradiation de ces couches par un rayonnement laser uv les rend instables. Formation d'une forte densite de defauts structuraux. Etablissement d'une correlation entre les phenomenes physiques evoques

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Book chapters on the topic "Ultra violet (UV)"

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Long, Craig S. "NOAA/EPA Surface Ultra-Violet Flux Index." In Stratospheric Ozone Depletion/UV-B Radiation in the Biosphere, 293–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78884-0_41.

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Di Pietro, A., and P. Compston. "Automated Fibre Placement With In Situ Ultra-Violet (UV) Light Curing: Concept Testing." In Sustainable Automotive Technologies 2010, 79–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10798-6_10.

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Calderini, D. F., S. Hess, C. R. Jobet, and J. A. Zúñiga. "Grain Weight and Grain Quality of Wheat in Response to Enhanced Ultra-Violet (UV-B) Radiation at Latter Stages of Crop Development." In Developments in Plant Breeding, 649–54. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/1-4020-5497-1_78.

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Conference papers on the topic "Ultra violet (UV)"

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Drako, Dean M., William N. Partlo, W. G. Oldham, and A. R. Neureuther. "An Experimental Characterization System for Deep Ultra-Violet (UV) Photoresists." In 1989 Microlithography Conferences, edited by Elsa Reichmanis. SPIE, 1989. http://dx.doi.org/10.1117/12.953040.

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Sickenberger, David. "Trend towards low cost, low power, ultra-violet (UV) based biological agent detectors." In Optics East 2005, edited by Arthur J. SedlacekIII, Steven D. Christesen, Roger J. Combs, and Tuan Vo-Dinh. SPIE, 2005. http://dx.doi.org/10.1117/12.631514.

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García Mainieri, Javier J., and Imad L. Al-Qadi. "Ultra-Violet (UV) Aging for Asphalt Binder under Controlled Moisture and Temperature Conditions." In International Airfield and Highway Pavements Conference 2021. Reston, VA: American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483510.002.

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Glover, Alison C. J., Elizabeth K. Llly, Michael J. Withford, and James A. Piper. "Ablation threshold and etch rate measurements in high-speed ultra-violet (uv) micro-machining of polymers with uv-copper vapour lasers." In ICALEO® ‘95: Proceedings of the Laser Materials Processing Conference. Laser Institute of America, 1995. http://dx.doi.org/10.2351/1.5058930.

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Zeng, Fan, Beshah Ayalew, and Mohammed Omar. "Control of a Robotic UV Curing Process With Thermal Vision Feedback Through Two IR Cameras." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-13007.

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Robotic ultra-violet (UV) curing is considered to be one of the effective ways to replace the current convection-based methods in various manufacturing processes due to its fast curing rate and high energy efficiency. This paper presents a closed-loop control of a robotic UV curing system by using thermal vision feedback through two infrared (IR) cameras. The proposed approach is developed based on a mathematical analysis of the fundamental UV curing process and the integration of the local and global IR cameras in a cascade manner. A computer simulation study is conducted to evaluate the proposed strategy by regarding two control variables: the radiant intensity of the UV heater and the sweeping speed of the robot end effector. The results indicate that controllers using either control variable can compensate for interferences and improve curing quality under this thermal-vision-based architecture.

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Ziani, A., A. Jérome, M. Roulliay, E. Meltchakov, F. Bridou, K. Gasc, and F. Delmotte. "Systèmes multicouches à base d’aluminum réalisés par pulvérisation ionique dans le domaine Extrême Ultra-Violet pour l’imagerie solaire." In UVX 2010 - 10e Colloque sur les Sources Cohérentes et Incohérentes UV, VUV et X ; Applications et Développements Récents. Les Ulis, France: EDP Sciences, 2011. http://dx.doi.org/10.1051/uvx/2011037.

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Aziz, shujahadeen, Aso Hassan, and Swara Mohamed. "Structural and Optical characteristics of PVA:C-Dot composites: Tuning the absorption of Ultra Violet (UV) region." In 1st International Online Conference on Nanomaterials. Basel, Switzerland: MDPI, 2018. http://dx.doi.org/10.3390/iocn_2018-1-05494.

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Bao, Hua, and Xiulin Ruan. "Radiative Properties of GaAs From First Principles Calculations." In ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56341.

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Abstract:

Spectral reflectance of GaAs from infrared (IR) to ultra-violet (UV) bands is calculated from first principles. We first calculate the spectral dielectric function which is determined by the response of GaAs to external electromagnetic field. Two mechanisms exist for different wavelengths, namely, phonon absorption in the far-IR region and the electronic absorption in the near-IR to UV region. With plane-wave pseudopotential method, we determined the dielectric function of GaAs with the the initial structure as the only input. For the far-IR region, phonon calculations are carried out. By analyzing the phonon modes, low-frequency dielectric constant is calculated. For the near-IR to UV band, the electronic band structure of GaAs is calculated, and the imaginary part of the dielectric function is determined from the band structure using Fermi’s Golden rule. The real part of spectral dielectric function is then derived from Kramer-Kronig transformation. The reflectance is then calculated using Maxwell’s equations.

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Rafiudeen, Amiruddin, T. Srinivasa Reddy, Shaheer Cheemadan, and M. C. Santhosh Kumar. "Fabrication and characterization of p-ZnO:(P,N)/n-ZnO:Al homojunction ultra-violet (UV) light emitting diodes (Presentation Recording)." In SPIE Nanoscience + Engineering, edited by Stefano Cabrini, Gilles Lérondel, Adam M. Schwartzberg, and Taleb Mokari. SPIE, 2015. http://dx.doi.org/10.1117/12.2187938.

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Tandon, G. P., K. E. Goecke, and Ryan S. Justice. "Influence of Microstructure and UV-Conditioning on the Mechanical Response of Polymeric Foam Under Compressive Loading." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5060.

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Abstract:

The aim of this study is to evaluate the influence of microstructure, specifically, variations in foam cell size and density, on the compressive stress-strain behavior of polymeric foam material. Foams with varying densities are examined under incremental loadings to different prescribed strain levels. A comparison is made of the maximum stress level attained during deformation and residual strain on complete unloading and following recovery. Additionally, the durability of the foam material on exposure to service environment, namely, exposure to ultra-violet (UV) light and humidity, is considered. Cylindrical compression samples are exposed to Xenon Arc (63°C, 18 minutes water and light/102 minutes light only) and spectral intensity of 0.3 to 0.4 watts/m2 for 288 cycles. Parameters investigated include changes in modulus, maximum stress, residual strain and linear shape recovery due to conditioning and mechanical cycling.

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