Bibliografie tematiche / Light emitting fabric

Letteratura scientifica selezionata sul tema "Light emitting fabric"

Autore: Grafiati

Pubblicato: 15 giugno 2024

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Light emitting fabric".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "Light emitting fabric":

Li, Jing, Yanan Zhu e Mingqiao Ge. "Influence of fluorescent pigments on the spectral characteristics of luminous coated fabrics". Materials Research Express 8, n. 11 (1 novembre 2021): 115703. http://dx.doi.org/10.1088/2053-1591/ac39c2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Abstract In recent years, luminous coated fabrics based on SrAl2O4: Eu2+, Dy3+ luminescent materials have attracted more attention. However, due to the single emission color of SrAl2O4: Eu2+, Dy3+ luminescent materials, the application of prepared coated fabrics has certain liminations. Therefore, at present, there is a need to develop a kind of luminous coated fabric which has the capability of emitting multiple colors of light. In this work, fluorescent pigments and SrAl2O4: Eu2+, Dy3+ luminescent materials were added to a coating slurry and uniformly coated over a woven fabric substrate. The effects of adding fluorescent pigments on the spectral characteristics of luminous coated fabrics were evaluated. The blue fluorescent pigment causes a significant blue shift in the emission spectrum of the blue light-emitting coated fabric, whereas the emission spectra of the orange and red light-emitting coated fabrics exhibit a significant red shift. The yellow-green fluorescent pigments significantly affect the coated fabric. The emission spectrum shows no evident change and is similar to the emission spectrum of white (without any fluorescent pigment) luminescent coated fabric. The afterglow brightness of the colored luminous coated fabrics decreases exponentially with time. Adding blue fluorescent pigments has a greater impact on the brightness of the coated fabrics. The initial brightness is lower and the afterglow brightness loss is higher when using yellow-green fluorescence. The pigment has little effect on the brightness loss of coated fabrics, and the initial brightness of the coated fabric increases when adding yellow-green fluorescent pigments. Fluorescent pigments result in relatively low color purity for each colored coated fabric. However, the color rendering index is high, and the color rendering performance for the light source is excellent.

Martin, Alyssa, e Adam Fontecchio. "Effect of Fabric Integration on the Physical and Optical Performance of Electroluminescent Fibers for Lighted Textile Applications". Fibers 6, n. 3 (17 luglio 2018): 50. http://dx.doi.org/10.3390/fib6030050.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

The advent of electroluminescent (EL) fibers, which emit light in response to an applied electric field, has opened the door for fabric-integrated light emission and displays in textiles. However, there have been few technical publications over the past few years about the performance of these light emitting fibers inside functional fabrics. Thus, there is limited information on the effect of integration on the physical and optical performance of such devices. In this work, alternating current powder-based EL (ACPEL) fibers were evaluated under a range of operating conditions both inside and outside of a knit matrix to understand how the EL fiber device performance changed inside a functional fabric. The device efficiency, adjustable brightness, and mechanical properties of these fibers are presented. The effects of fabric integration on the light-emitting fibers as well as the supporting knit fabric are discussed as they relate to the practical applications of this technology.

Cinquino, Marco, Carmela Prontera, Marco Pugliese, Roberto Giannuzzi, Daniela Taurino, Giuseppe Gigli e Vincenzo Maiorano. "Light-Emitting Textiles: Device Architectures, Working Principles, and Applications". Micromachines 12, n. 6 (2 giugno 2021): 652. http://dx.doi.org/10.3390/mi12060652.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

E-textiles represent an emerging technology aiming toward the development of fabric with augmented functionalities, enabling the integration of displays, sensors, and other electronic components into textiles. Healthcare, protective clothing, fashion, and sports are a few examples application areas of e-textiles. Light-emitting textiles can have different applications: sensing, fashion, visual communication, light therapy, etc. Light emission can be integrated with textiles in different ways: fabricating light-emitting fibers and planar light-emitting textiles or employing side-emitting polymer optical fibers (POFs) coupled with light-emitting diodes (LEDs). Different kinds of technology have been investigated: alternating current electroluminescent devices (ACELs), inorganic and organic LEDs, and light-emitting electrochemical cells (LECs). The different device working principles and architectures are discussed in this review, highlighting the most relevant aspects and the possible approaches for their integration with textiles. Regarding POFs, the methodology to obtain side emissions and the critical aspects for their integration into textiles are discussed in this review. The main applications of light-emitting fabrics are illustrated, demonstrating that LEDs, alone or coupled with POFs, represent the most robust technology. On the other hand, OLEDs (Organic LEDs) are very promising for the future of light-emitting fabrics, but some issues still need to be addressed.

Zhang, Zhitao, Xiang Shi, Huiqing Lou, Yifan Xu, Jing Zhang, Yiming Li, Xunliang Cheng e Huisheng Peng. "A stretchable and sensitive light-emitting fabric". Journal of Materials Chemistry C 5, n. 17 (2017): 4139–44. http://dx.doi.org/10.1039/c6tc05156a.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jin, Rui Peng, Zi Min Jin, Xue Qin Wang e Bin Yang. "The Design of Jacquard Fabric with Optical Fiber for Effect of Leaves Falling". Advanced Materials Research 821-822 (settembre 2013): 283–86. http://dx.doi.org/10.4028/www.scientific.net/amr.821-822.283.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

The optical jacquard decorative fabric which had patterns in dynamic display was woven with side-emitting polymer optical fibers (POF) and common textile fibers. The side-emitting POFs were designed as surface wefts in luminous parts of the fabric, and the POFs were back in other parts. These POFs were divided into different groups according to luminous sequence. Then the POFs were connected with light sources and a specific circuit. Finally the patterns of fabric could display like animation. When POFs didnt emit light, the fabric kept the effect of traditional jacquard fabric.

Mordon, Serge, Cédric Cochrane, Jean Baptiste Tylcz, Nacim Betrouni, Laurent Mortier e Vladan Koncar. "Light emitting fabric technologies for photodynamic therapy". Photodiagnosis and Photodynamic Therapy 12, n. 1 (marzo 2015): 1–8. http://dx.doi.org/10.1016/j.pdpdt.2014.11.002.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Harlin, Ali, Mailis Mäkinen e Anne Vuorivirta. "DEVELOPMENT OF POLYMERIC OPTICAL FIBRE FABRICS AS ILLUMINATION ELEMENTS AND TEXTILE DISPLAYS". AUTEX Research Journal 3, n. 1 (1 marzo 2003): 1–8. http://dx.doi.org/10.1515/aut-2003-030101.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Abstract Polymeric optical fibre (POF) is used for simple light guide and illumination applications. The polymer optical fibre materials can be utilised in flexible lighting elements which can be combined with textile structures. The POF woven fabrics are introduced as a flexible alternative to lighting elements. Various light-emitting woven fabric and light emission theories has been discussed. Simple polymethyl- metacrylate PMMA and polycarbonate PC fibres have been produced experimentally through single-screw and conical extrusion. The fibre is integrated in woven structures by means of handloom, narrow fabric weaving and Jacquard technology. The manufacturing technology suitable for lightemitting textile applications and its opportunities in textile integration is discussed.

Kim, Woohyun, Seonil Kwon, Sung-Min Lee, Jin Yeong Kim, Yuncheol Han, Eungtaek Kim, Kyung Cheol Choi, Sungmee Park e Byoung-Cheul Park. "Soft fabric-based flexible organic light-emitting diodes". Organic Electronics 14, n. 11 (novembre 2013): 3007–13. http://dx.doi.org/10.1016/j.orgel.2013.09.001.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Chu, Wei Cheng, Hsin Ju Lin e Shu Ping Chiu. "Design of Photo-Induced Biofeedback Fabric and Study of its Influence on Brain Wave". Applied Mechanics and Materials 311 (febbraio 2013): 512–17. http://dx.doi.org/10.4028/www.scientific.net/amm.311.512.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Because of stress and sleeping obstacle for 21th century people, the purpose of this study is to design a home decorative fabric which has the function of releasing from stress and enhancing sleeping quality. The optical fiber were sewn on the surface of optical fabric in form of three kinds of curvature patterns. Guiding the LED light into the optical fiber, the light will emit out of the optical fiber and stimulate our visual system in order to change the form of brain wave. Afterwards, the EEG instrument was used to evaluate the function of stress relaxation of such fabrics. The results were shown that human’s brain wave can be changed from relaxed and sober status to shallow-sleeping status after the stimulation of light emitting from the optical fiber fabrics. For the effect of causing shallow-sleeping status, female is more significant than male. Therefore, the light stimulating visual system by using the optical fiber fabrics can change the form of brain wave and achieve the effect of stress relaxation.

Ranga, Shravan, Ujwal Shreenag Meda e Samhita Kiran. "Nanotechnology in the Textile Industry: Present and Future". ECS Transactions 107, n. 1 (24 aprile 2022): 4791–98. http://dx.doi.org/10.1149/10701.4791ecst.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

The use of nanotechnology in various types of textiles revolutionized the industry. Bulletproof jumpsuits, invisible coatings, advanced fibers, and fabric touchpads have transformed traditional textiles into smart textiles. Artificial muscles, also known as ICPs (inherently conductive polymers), are made from nanomaterials that mimic biological muscles. Fabrics coated with silver nanoparticles are the most effective antibacterial bandages or dressings. New advancements allowed usage of pressure pads which have nanoparticles of gold, nickel, and so on incorporated into it. The piezoelectric capabilities of carbon doped polymers used in iPod controls and fabric switches are preserved. Woven optical fibers are used in textiles for a variety of purposes, including light transmission, sensing, deformation detection, and data transmission. Another approach for the transfer of graphic and multicolored surfaces is light emitting fabrics. Fabrics made with phase change materials act as a thermostat, ensuring that the desired temperature is maintained.

Più fonti

Tesi sul tema "Light emitting fabric":

Potfajova, Jaroslava. "Silicon based microcavity enhanced light emitting diodes". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25451.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Potfajova, J. "Silicon based microcavity enhanced light emitting diodes". Forschungszentrum Dresden-Rossendorf, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-27756.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Potfajova, J. "Silicon based microcavity enhanced light emitting diodes". Forschungszentrum Dresden-Rossendorf, 2009. https://hzdr.qucosa.de/id/qucosa%3A21604.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Realising Si-based electrically driven light emitters in a process technology compatible with mainstream microelectronics CMOS technology is key requirement for the implementation of low-cost Si-based optoelectronics and thus one of the big challenges of semiconductor technology. This work has focused on the development of microcavity enhanced silicon LEDs (MCLEDs), including their design, fabrication, and experimental as well as theoretical analysis. As a light emitting layer the abrupt pn-junction of a Si-diode was used, which was fabricated by ion implantation of boron into n-type silicon. Such forward biased pn-junctions exhibit room-temperature EL at a wavelength of 1138 nm with a reasonably high power efficiency of 0.1% [1]. Two MCLEDs emitting light at the resonant wavelength about 1150 nm were demonstrated: a) 1 MCLED with the resonator formed by 90 nm thin metallic CoSi2 mirror at the bottom and semitranparent distributed Bragg reflector (DBR) on the top; b) 5:5 MCLED with the resonator formed by high reflecting DBR at the bottom and semitransparent top DBR. Using the appoach of the 5:5 MCLED with two DBRs the extraction efficiency is enhanced by about 65% compared to the silicon bulk pn-junction diode.:List of Abbreviations and Symbols 1 Introduction and motivation 2 Theory 2.1 Electronic band structure of semiconductors 2.2 Light emitting diodes (LED) 2.2.1 History of LED 2.2.2 Mechanisms of light emission 2.2.3 Electrical properties of LED 2.2.4 LED e ciency 2.3 Si based light emitters 2.4 Microcavity enhanced light emitting pn-diode 2.4.1 Bragg reflectors 2.4.2 Fabry-Perot resonators 2.4.3 Optical mode density and emission enhancement in coplanar Fabry-Perot resonator 2.4.4 Design and optical properties of a Si microcavity LED 3 Preparation and characterisation methods 3.1 Preparation techniques 3.1.1 Thermal oxidation of silicon 3.1.2 Photolithography 3.1.3 Wet chemical cleaning and etching 3.1.4 Ion implantation 3.1.5 Plasma Enhanced Chemical Vapour Deposition (PECVD) of silicon nitride 3.1.6 Magnetron sputter deposition 3.2 Characterization techniques 3.2.1 Variable Angle Spectroscopic Ellipsometry (VASE) 3.2.2 Fourier Transform Infrared Spectroscopy (FTIR) 3.2.3 Microscopy 3.2.4 Electroluminescence and photoluminescence measurements 4 Experiments, results and discussion 4.1 Used substrates 4.1.1 Silicon substrates 4.1.2 Silicon-On-Insulator (SOI) substrates 4.2 Fabrication and characterization of distributed Bragg reflectors 4.2.1 Deposition and characterization of SiO2 4.2.2 Deposition of Si 4.2.3 Distributed Bragg Reflectors (DBR) 4.2.4 Conclusions 4.3 Design of Si pn-junction LED 4.4 Resonant microcavity LED with CoSi2 bottom mirror 4.4.1 Device preparation 4.4.2 Electrical Si diode characteristics 4.4.3 EL spectra 4.4.4 Conclusions 4.5 Si based microcavity LED with two DBRs 4.5.1 Test device 4.5.2 Device fabrication 4.5.3 LED on SOI versus MCLED 4.5.4 Conclusions 5 Summary and outlook 5.1 Summary 5.2 Outlook A Appendix A.1 The parametrization of optical constants A.1.1 Kramers-Kronig relations A.1.2 Forouhi-Bloomer dispersion formula A.1.3 Tauc-Lorentz dispersion formula A.1.4 Sellmeier dispersion formula A.2 Wafer holder List of publications Acknowledgements Declaration / Versicherung

Nieuwjaer, Laurine. "Développement d'un dispositif d'illumination pour le traitement de la carcinose péritonéale d'origine ovarienne par thérapie photodynamique intracavitaire". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILS044.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Le cancer de l'ovaire représente la 5e cause de mortalité par cancer chez la femme en France, avec plus de 3935 décès en 2020. Son évolution se caractérise par l'envahissement de tout ou partie du péritoine par des métastases ovariennes définissant la notion de carcinose péritonéale d'origine ovarienne.Le traitement standard de la carcinose péritonéale ovarienne consiste en une chirurgie de cytoréduction, dont l'objectif est de retirer les tumeurs visibles à l'œil du chirurgien, associée à une chimiothérapie. Cependant, le taux de récidive, lié à la présence de tumeurs résiduelles, est élevé et survient dans deux tiers des cas. En cas de récidive, le pronostic est sombre avec une médiane de survie n'excédant pas quelques mois.Des études ont montré que la présence de tumeurs résiduelles, visibles ou même microscopiques, à la suite de la chirurgie augmentait significativement le risque de récidive. Ainsi, un traitement capable de détruire l'ensemble des tumeurs persistantes au sein de la cavité péritonéale à l'issue de la chirurgie permettrait donc de diminuer voire d'éviter les récidives et augmenterait ainsi la survie globale des patientes.Dans ce contexte, nous proposons d'utiliser la thérapie photodynamique (PDT) en tant que traitement adjuvant. En effet, la PDT consiste en l'administration d'un photosensibilisateur (PS), qui après s'être accumulé préférentiellement dans les cellules tumorales, est activé par illumination à une longueur d'onde spécifique. Cette activation conduit à la génération de molécules cytotoxiques à l'origine de la mort des cellules tumorales et constitue le 1er effet, direct, de la PDT. Les 2nd et 3e effets de la PDT, cette fois indirects, consistent en une hypoxie de la tumeur causée par l'altération de sa vascularisation et en une activation du système immunitaire antitumorale.Fort de son expertise dans l'utilisation de la PDT contre plusieurs types de cancers et précancers, le laboratoire ONCOTHAI a initié le projet PRODYNOV, visant à réunir les conditions nécessaires au développement, en clinique, de la PDT pour la carcinose péritonéale d'origine ovarienne. Dans le cadre de ce projet, un PS ciblant spécifiquement les cellules cancéreuses d'origine ovarienne a été développé et a fait l'objet d'un brevet en 2017.L'objectif principal de cette thèse s'inscrit dans le cadre de ce projet innovant et consiste en la mise au point d'un dispositif lumineux qui sera installé pendant la chirurgie, au sein de la cavité péritonéale, et permettra l'activation du PS dans le but d'éliminer l'ensemble des tumeurs résiduelles. Ce dispositif lumineux a été développé et testé sur prototype de banc de mesure innovant, également développé au cours de ce travail de recherche.En complément de ce dispositif, une étude de l'effet du scialytique, lampe d'éclairage opératoire, systématiquement présente au-dessus du corps de la patiente durant la chirurgie a également été réalisée. En effet, le PS ayant été administré à la patient plusieurs heures avant le début de la chirurgie, la lumière délivrée par le scialytique est susceptible de générer un effet PDT qu'il est essentiel de considérer.Le dispositif lumineux développé ainsi que le scialytique font actuellement l'objet d'une étude préclinique sur le cochon. Cette étude a pour objectif de démontrer la faisabilité d'une illumination intra-cavitaire optimale. Une dosimétrie de l'illumination sera alors réalisée sur modèle vivant afin de s'assurer des doses de lumière délivrées.En parallèle de ces développements, nous avons mis au point des dispositifs d'illumination in vitro et in vivo ayant permis de valider l'efficacité du nouveau PS sur des lignées humaines de cancer ovarien et sur des modèles murins humanisés de carcinose péritonéale d'origine ovarienne.En conclusion, cette thèse a permis d'initier le positionnement de la PDT, en tant que traitement adjuvant, dans la prise en charge de la carcinose péritonéale d'origine ovarienne
Ovarian cancer represents the 5th leading cause of death by cancer in women in France, with more than 3935 deaths in 2020. Its evolution is characterized by the invasion of all or part of the peritoneum by ovarian metastases defining the notion of peritoneal carcinomatosis of ovarian origin.The standard treatment for ovarian peritoneal carcinomatosis consists of cytoreduction surgery, the objective of which is to remove the tumors visible to the eye of the surgeon, associated with chemotherapy. However, the recurrence rate, linked to the presence of residual tumours, is high and occurs in two thirds of cases. In case of recurrence, the prognosis is poor with a median survival not exceeding a few months.Studies have shown that the presence of visible or even microscopic residual tumors following surgery significantly increases the risk of recurrence. Thus, a treatment enabling the destruction all persistent tumors within the peritoneal cavity after surgery would therefore reduce or even prevent recurrences and thus increase the overall survival of patients.In this context, we propose to use photodynamic therapy (PDT) as an adjuvant treatment. Indeed, PDT consists of the administration of a photosensitizer (PS), which after accumulating preferentially in tumor cells, is activated by illumination at a specific wavelength. This activation leads to the generation of cytotoxic molecules responsible for the death of tumor cells and constitutes the first direct effect of PDT. The 2nd and 3rd effects of PDT, this time indirect, consist of hypoxia of the tumor caused by the alteration of its vascularization and activation of the antitumor immune system.Through its strong expertise in the use of PDT against several types of cancers and precancers, the ONCOTHAI laboratory initiated the PRODYNOV project, aimed at bringing together the conditions necessary for the development of clinical PDT for peritoneal carcinomatosis of origin ovarian. As part of this project, a PS specifically targeting cancer cells of ovarian origin was developed and patented in 2017.The main objective of thesis is part of this innovative project and consists of the development of a light emitting device that will be installed during surgery, within the peritoneal cavity, and will allow the activation of the PS in order to eliminate all residual tumors. This luminous device was developed and tested on an innovative measuring bench prototype, also developed during this research work.In addition to these developments, a study of the effect of the operating lamp, systematically present above the patient's body during surgery, was also carried out. Indeed, as the PS is administered to the patient several hours before the beginning of the surgery, the light delivered by the operating lamp can generate a PDT effect that must be considered.The light emitting device developed as well as the operating lamp are currently the subject of a preclinical study on pig. This study aims to demonstrate the feasibility of optimal intracavitary illumination. Dosimetry of the illumination will then be carried out on the living model in order to ensure the delivered light doses.In parallel with these advances, we have developed in vitro and in vivo illumination devices which have enabled to validate the effectiveness of the new PS on human cell lines of ovarian cancer and on humanized mouse models of peritoneal carcinomatosis of ovarian origin.In conclusion, this thesis allowed to initiate the positioning of PDT in the management of peritoneal carcinomatosis of ovarian origin as an adjuvant treatment

Potfajova, Jaroslava. "Silicon based microcavity enhanced light emitting diodes". Doctoral thesis, 2009. https://tud.qucosa.de/id/qucosa%3A25162.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

"Optical Simulation and Optimization of Light Extraction Efficiency for Organic Light Emitting Diodes". Master's thesis, 2016. http://hdl.handle.net/2286/R.I.38677.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

abstract: Current organic light emitting diodes (OLEDs) suffer from the low light extraction efficiency. In this thesis, novel OLED structures including photonic crystal, Fabry-Perot resonance cavity and hyperbolic metamaterials were numerically simulated and theoretically investigated. Finite-difference time-domain (FDTD) method was employed to numerically simulate the light extraction efficiency of various 3D OLED structures. With photonic crystal structures, a maximum of 30% extraction efficiency is achieved. A higher external quantum efficiency of 35% is derived after applying Fabry-Perot resonance cavity into OLEDs. Furthermore, different factors such as material properties, layer thicknesses and dipole polarizations and locations have been studied. Moreover, an upper limit for the light extraction efficiency of 80% is reached theoretically with perfect reflector and single dipole polarization and location. To elucidate the physical mechanism, transfer matrix method is introduced to calculate the spectral-hemispherical reflectance of the multilayer OLED structures. In addition, an attempt of using hyperbolic metamaterial in OLED has been made and resulted in 27% external quantum efficiency, due to the similar mechanism of wave interference as Fabry-Perot structure. The simulation and optimization methods and findings would facilitate the design of next generation, high-efficiency OLED devices.
Dissertation/Thesis
Masters Thesis Mechanical Engineering 2016

Libri sul tema "Light emitting fabric":

Solymar, L., D. Walsh e R. R. A. Syms. Optoelectronics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198829942.003.0013.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

The properties of light detectors and light emitting diodes (LEDs) are discussed. Electro-optic, photorefractive, and nonlinear materials are introduced. The phenomenon of phase conjugation is explained. Interaction between acoustic and light waves is shown to be possible. The significance of integrated optics is discussed. Bistability due to the action of nonlinear Fabry–Perot cavities is explained. Optical switching is shown to be an application of micro-electro-mechanical effects. The complicated phenomenon electro-absorption in quantum well structures and its applications are discussed.

Capitoli di libri sul tema "Light emitting fabric":

Mee, Nicholas. "Ripples in the Fabric of Things". In Gravity: From Falling Apples to Supermassive Black Holes, 246–78. 2^a ed. Oxford University PressOxford, 2022. http://dx.doi.org/10.1093/oso/9780192845283.003.0009.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Abstract This chapter is about gravitational waves. It discusses the Hulse–Taylor binary neutron star system and its importance in testing general relativity and the discovery that the system is losing energy by emitting gravitational waves. The chapter looks at the history of gravitational wave detectors, culminating in the construction of the Advanced LIGO interferometer. The detection of the first gravitational wave signal is discussed in detail along with an analysis of the system that produced the gravitational wave. The text discusses the significance of this new window on the universe. The detection of neutron star mergers has offered an insight into how heavy elements such as gold are created. The detection of black hole mergers has given the most direct evidence for the existence of stellar mass black holes and has confirmed that gravitational waves travel at the speed of light. The chapter closes by looking at future gravitational wave observatories.

Oguz, Yesim, Vladan Koncar, Cedric Cochrane e Serge Mordon. "Light-Emitting Woven Fabric for Treatment with Photodynamic Therapy and Monitoring of Actinic Keratosis". In Photomedicine - Advances in Clinical Practice. InTech, 2017. http://dx.doi.org/10.5772/64997.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Oguz, Yesim, Cédric Cochrane, Serge R. Mordon, Jean Claude Lesage e Vladan Koncar. "Light-emitting fabrics for photodynamic therapy". In Advances in Smart Medical Textiles, 177–94. Elsevier, 2016. http://dx.doi.org/10.1016/b978-1-78242-379-9.00008-6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Maisha, Jarin Tasnim, Fairooz Nawer, Mehnaz Urbee Jahangir e M. Tarik Arafat. "Light-emitting fabrics for photodynamic therapy". In Medical Textiles from Natural Resources, 499–528. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-323-90479-7.00001-4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Light emitting fabric":

Thecua, E., C. Vicentini, A.-S. Vignion, F. Lecomte, P. Deleporte, L. Mortier, R. M. Szeimies e S. Mordon. "Light emitting fabric for photodynamic treatment of actinic keratosis". In SPIE BiOS, a cura di Bernard Choi, Haishan Zeng e Nikiforos Kollias. SPIE, 2017. http://dx.doi.org/10.1117/12.2252201.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Thecua, Elise, Laurine Ziane, Gregory Baert, Pascal Deleporte, Bertrand Leroux, Abhishek Kumar, Martha Baydoun, Olivier Moralès, Nadira Delhem e Serge R. Mordon. "Devices based on light emitting fabrics dedicated to PDT preclinical studies". In 17th International Photodynamic Association World Congress, a cura di Tayyaba Hasan. SPIE, 2019. http://dx.doi.org/10.1117/12.2525701.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Mordon, Serge R., Elise Thecua, Fabienne Lecomte, Anne-Sophie Vignion-Dewalle, Pascal Deleporte, Cyril Maire, Henry Abi-Rached et al. "Light emitting fabrics for PDT: technology and results of clinical studies". In 17th International Photodynamic Association World Congress, a cura di Tayyaba Hasan. SPIE, 2019. http://dx.doi.org/10.1117/12.2524874.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Thécua, Elise, Fabienne Lecomte, Laurine Ziane, Anne-Sophie Vignion-Dewalle, Cyril Maire, Claire Vicentini, Henry Abirached, Delphine Staumont, Laurent Mortier e Serge R. Mordon. "Light emitting fabrics for photodynamic treatment of vulvar primary extramammary Paget's disease". In 17th International Photodynamic Association World Congress, a cura di Tayyaba Hasan. SPIE, 2019. http://dx.doi.org/10.1117/12.2525609.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Koyama, F., S. Kubota e K. Iga. "GaAlAs/GaAs Vertical Cavity Surface Emitting Active Filter". In Optical Amplifiers and Their Applications. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oaa.1991.fc2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Semiconductor laser amplifiers are of interest for direct light amplification as well as functional operation such as wavelength filtering and so on. An optical filter with narrow bandwidth and wavelength tuning is one of key devices for dense wavelength division multiplexing (WDM) trunk lines and networks. So far, laser diode active filters using Fabry-Perot cavity or DFB/DBR laser structures have been studied [1] – [4] . There are remaining problems in these devices, such as large polarization sensitivity due to those rectangular waveguide structure and difficult coupling to optical fibers.

Huffaker, D. L., D. G. Deppe, C. J. Pinzone, T. J. Rogers, B. G. Streetman e R. D. Dupuis. "Threshold Dependence on Cavity Length and Mirror Reflectivity in Fabry-Perot Microcavity Semiconductor Lasers with High Contrast Mirrors". In Quantum Optoelectronics. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/qo.1993.qwa.4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

There is currently a great deal of interest in the use of small optical cavities to control the spontaneous emission characteristics from semiconductor light emitting diodes and lasers. Predictions of the magnitude to which the effect may be realized range from novel forms of lasers having "zero-threshold", to skepticism as to whether controlled spontaneous emission may impact practical devices at all since it simply represents "filtering". Therefore, experimental investigations which elucidate the role controlled spontaneous emission may play in present day realizable device structures are needed.

Leger, James R., Guoqiang Chen e Anand Gopinath. "Spatial Mode Discrimination in a Vertical Cavity Surface Emitting Laser by a Fabry-Perot Etalon". In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cmh4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Methods to increase the cw power of VCSELs generally require increases in mode area. To maintain single mode operation, a strong mechanism to discriminate against higher-order modes must be incorporated in the optical resonator structure. Spatial filtering methods have been employed in the far field to selectively enhance the modal reflectivity of the fundamental VCSEL mode [1]. However, for large aperture VCSELs, the far field light distribution is usually produced by a lens, making integration of the lens and filter difficult. In this experiment, we use the angular reflectivity properties of a Fabry-Perot to perform spatial filtering in the near field [2], permitting a modal selection mechanism that can be easily integrated into the VCSEL structure.

Lee, Y. H., B. Tell, K. Brown-Goebeler, J. L. Jewell e J. M. V. Hove. "Low-threshold cw top-surface-emitting lasers at 850 nm". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.mk13.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

We report new self-aligned top-surface-emitting lasers in which top mirrors are used as output mirrors and deep-ion implantation is used for current funneling. The laser structure, grown with molecular-beam epitaxy, is a vertical pin junction in which electric current is injected through the bottom and top mirrors. The undoped active region consists of four 100 Å thick GaAs quantum wells. 300 keV protons are used to introduce a buried damage layer that is concentrated around a depth of 2.3 µm from the surface, but the topmost 1.5 µm is left relatively conductive. Only those areas under the output windows are not damaged, and current is forced to flow predominantly through the active region. A 10 µm diameter laser has a 1.7 mA cw threshold at room temperature. Initially, the laser light is mostly horizontally polarized with a Gaussian mode profile. At higher current, TEM 01* modes show up with both polarizations. We have observed cw output power of as great as 1.5 mW from a 15 µm diameter top-surface-emitting laser. The cw differential quantum efficiency is approximately 20%. Measured spectral linewidth is 0.02 Å as measured by a scanning Fabry-Perot étalon.

Guarino, Lori A. "Methods of optical spectral analysis". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.wg8.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

Optical spectrum analyzers are convenient instruments for testing parameters such as the emission spectrum of laser diodes or light emitting diodes, the deterioration of the laser diode spectral width due to phenomena such as chirping, and the presence of side modes when measuring single-longitudinal- mode laser diodes. A comparison of optical spectral analysis methods including interference spectrophotometric methods and dispersion spectrophotometric methods is given. Emphasis is placed on diffraction grating and Fabry-Perot inteferometer techniques. The importance of parameters such as dynamic range, resolution, and elimination of effects of polarization is discussed. Examples are given of the use of spectrum analyzers to measure the effects of changes in temperature and current as well as the effects of phenomena such as mode hopping and chirping.

Fauchet, P. M., J. von Behren, L. Tsybeskov, Y. Kostoulas e K. B. Ucer. "Ultrathin Porous Silicon Films: Physics & Device Applications". In Quantum Optoelectronics. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/qo.1995.qthb3.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abstract (sommario):

We have manufactured thin films of light-emitting porous silicon (LEPSi) by electrochemical etching in HF and subsequently lifted them off the silicon wafer by an electropolishing step [1]. The film thickness was varied from 100 μm to 0.1 μm and the porosity ranged from < 40% to ≥ 90%. To insure the structural integrity of the thinner, higher porosity films, they were deposited on sapphire windows where they remain attached by van der Waals or electrostatic forces, in a manner reminiscent of earlier work with ultrathin film of III-V semiconductors [2]. The microstructural, chemical and optical properties of these films have been investigated using a variety of tools, including AFM, XRD, FTIR, cw and time-resolved absorption and luminescence measurements. These films are optically flat, do not scatter light, and show pronounced Fabry-Perot interference fringes in the transparency region which can extend to photon energies well above the bandgap of crystalline silicon (see Fig. 1). The refractive index can be lower than 1.3 for high porosity films, in qualitative agreement with the predictions of a simple effective medium theory.