Dissertations / Theses on the topic 'Frustrated Total Internal Reflection (FTIR)'
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1
Rahnavardy, Kambiz. "Investigation and application of the Frustrated-Total-Internal-Reflection phenomenon in optical fibers." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11072008-063335/.
2
Alagao, Mary Angelie. "Characterization and optimization of the Evanescent Wave Coronagraph." Electronic Thesis or Diss., Saint-Etienne, 2023. http://www.theses.fr/2023STET0060.
Abstract:
L’imagerie directe des exoplanètes reste difficile en raison du contraste élevé et de la faible séparation angulaire entre l'étoile et la planète. Cela nécessite de supprimer l'éblouissement dû à l'étoile et de s'assurer que la lumière faible de la planète n'est pas noyée au milieu de divers bruits. La détection dépend de la maturité des techniques et des algorithmes utilisés, tout en tenant compte des compromis importants sur le contraste brut, la résolution angulaire et la transmission. L'une de ses composantes clés est l'utilisation de coronagraphes - des instruments ayant pour seul but de bloquer/réduire la lumière provenant de l'étoile. Ce travail présente un nouveau type de coronographe de Lyot, inventé par le Dr Yves Rabbia, qui repose sur le principe de la réflexion interne totale frustrée (FTIR) pour supprimer la lumière de l'étoile. Ce coronographe est appelé Evanescent Wave Coronagraph (EvWaCo) en raison de sa nature : son masque au plan focal, comprenant une lentille et un prisme, réfléchit la source hors axe (planète) et transmet la source sur l'axe (étoile) à l’aide des ondes évanescentes. Cette thèse vise à fournir au lecteur les bases qui mettent en évidence les trois principaux avantages d'EvWaCo : i) le masque est intrinsèquement achromatique, ii) la taille du masque est ajustable en modifiant la pression entre la lentille et le prisme, et iii) à la fois la lumière stellaire et la lumière planétaire peuvent être collectées simultanément pour une détection de front d'onde de bas ordre et un centrage approprié de l’étoile. Les performances d'EvWaCo sont évaluées à travers des expériences en laboratoire, puis comparées à des simulations numériques. Les résultats expérimentaux montrent un contraste brut égal à quelques 10-4 à 3 ��/�� sur toute la bande I (��c = 800 nm, ∆��/�� ≈ 20%) et à 4 ��/�� sur toute la bande R (��c = 650 nm, ∆��/�� ≈ 23%). Les simulations confirment la capacité de rejet achromatique d'EvWaCo, montrant un contraste brut de 10-4 à la même distance radiale sur les deux bandes spectrales. Cette thèse se conclut sur un bilan de l’état du banc développé et les perspectives futuresDirect imaging of exoplanets remains challenging due to the high contrast and the small angular separation between the star and the planet. It requires suppressing the blinding glare from the star and ensuring that the planet's faint light is not buried deep in various noises. Successful detection depends on the technological readiness and maturity of techniques and algorithms employed while considering the significant trade-offs on raw contrast, inner working angle, and throughput. One of its key components is the use of coronagraphs – instruments with the sole purpose of blocking/reducing the light from the star. This work presents a new type of Lyot coronagraph, invented by Dr. Yves Rabbia, that relies on the frustrated total internal reflection (FTIR) principle to suppress the starlight. This coronagraph is aptly called the Evanescent Wave Coronagraph (EvWaCo) owing to its nature that its focal plane mask, comprising a lens and a prism, reflects the off-axis source (planet) and transmits the on-axis source (star) by capturing the evanescent waves. This thesis aims to provide the reader with the groundwork that highlights EvWaCo's three main advantages: i) the mask is inherently achromatic, ii) the size of the mask is adjustable by changing the pressure between the lens and the prism, and iii) both the stellar light and the planet light can be collected simultaneously for low-order wavefront sensing, and proper stellar light centering. The performance of EvWaCo is assessed through experiments in a laboratory and then compared to numerical simulations. The experimental results show a raw contrast equal to a few 10-4 at 3 ��/�� over the full I-band (��c = 800 nm, ∆��/�� ≈ 20%) and at 4 ��/�� over the full R-band (��c = 650 nm, ∆��/�� ≈ 23%). The simulations confirm the achromatic rejection capability of EvWaCo as it showed a raw contrast of 10-4 at the same radial distance over both bandpasses. This thesis concludes with the status of its testbed and future perspectives
3
CAMPOS, CARLOS ANDRE TAVARES. "COMPONENTS OF A MULTITOUCH SYSTEM BASED ON FRUSTRATED TOTAL INTERNAL REFLECTION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14013@1.
Abstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROOs sistemas multi-toque (multitouch) estão se tornando cada vez mais utilizados, substituindo a tradicional interface humano-computador baseada em mouse (WIMP interfaces). Um sistema multi-toque pode se basear no fenômeno físico da reflexão interna total confinada (FTIR) da luz numa superfície de acrílico. Com o barateamento dos projetores e câmeras, a construção de mesas e painéis multi-toque se tornou uma possibilidade viável para universidades e empresas. Naturalmente, a qualidade desses sistemas depende do ajuste dos materiais, das luzes, das câmeras e dos projetores utilizados. Este assunto é ainda uma área em aberto, com pouca literatura disponível tendo em vista seus aspectos comerciais. Esta dissertação apresenta um estudo sobre a construção de mesas e painéis multi-toque com base em equipamentos e materiais de baixo custo. O princípio geral de funcionamento e a tecnologia de cada componente são discutidos. Um protótipo foi construído para avaliar o comportamento de cada componente. Com base nos resultados obtidos são apresentadas algumas conclusões e sugestões para trabalhos futuros.
Multitouch systems are becoming more popular replacing traditional WIMP user interfaces. A multitouch system can be based on frustrated total internal refraction of the light in an acrylic surface. With the use of commodity projectors and cameras these systems are now becoming widely affordable. Naturally the quality of these systems depends upon the right choice of material, lights, cameras and projectors. Giving its importance, there is a need for more information on this subject in the literature. This thesis presents the general design of a multitouch systems and a detailed discussion of the expected behavior of each component. A prototype was built to evaluate the proposed solution. Results are discussed to support some conclusions and suggestions of future work.
4
Reddy, Perla Siva. "Embedded Multilayer Thin Film Stacks as Polarizing Beam Splitters and Wave Retarders Operating under Condition of Frustrated Total Internal Reflection." ScholarWorks@UNO, 2007. http://scholarworks.uno.edu/td/1079.
Abstract:
The polarization properties of embedded centro-symmetric and periodic multilayer stacks under conditions of frustrated total internal reflection (FTIR) are considered. The centro-symmetric multilayer stack consists of a high-index center layer sandwiched between two identical low-index films and high-index – low-index bilayers repeated on both sides of the central trilayer maintaining the symmetry of the entire stack. The periodic multilayer consists of periodically repeated low-index – high-index bilayers. Each multilayer stack is embedded in a high-index prism. Embedded centro-symmetric multilayer stacks are designed to function as efficient polarizers or polarizing beam splitters (PBSs) under conditions of FTIR over an extended range of incidence angles. For a given set of refractive indices, all possible solutions for the thicknesses of the layers that suppress the reflection of p-polarized light at a specified angle, and the associated reflectance of the system for the orthogonal s polarization, are determined. The angular and spectral sensitivities of polarizing multilayer stacks employing 3, 7, 11, 15 and 19 layers of BaF2 and PbTe thin films embedded in a ZnS prism, operating at ë = 10.6 ìm, are presented. Embedded centro-symmetric multilayer stacks are also designed to function as complete-transmission quarter-wave or half-wave retardation (QWR or HWR) devices under conditions of FTIR. QWR and HWR designs at ë =1.55 mì are presented that employ 11 and 7 layers of Si and SiO2 thin films embedded in GaP and Si cube prisms, respectively. The angular and spectral sensitivities of these devices are also considered. Embedded centro-symmetric multilayer stacks under FTIR conditions are also designed to produce various 50%-50% beam splitters. Embedded periodic multilayer stacks are designed to function as polarizers and PBSs at discrete multiple angles of incidence and wavelengths under condition of FTIR. For a given set of refractive indices, all possible solutions for the thicknesses of the layers that suppress the reflection of p-polarized light at a specified angle, and the associated reflectance of the system for the orthogonal s polarization, are determined. The angular and spectral sensitivities of polarizing multilayer stacks employing 4, 6, 8, 10, 12, 14, 16 and 18 layers of BaF2 and PbTe thin films embedded in a ZnS prism, operating at ë= 10.6 ìm, are presented.
5
Gaufillet, Fabian. "Cristaux photoniques à gradient : dispositifs et applications." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112295.
Abstract:
Les matériaux artificiellement structurés que sont les cristaux photoniques sont couramment utilisés pour leurs propriétés dispersives. Leur constante diélectrique varie périodiquement à l'échelle de la longueur d'onde selon deux ou trois directions avec un contraste d'indice suffisamment élevé. La relation de dispersion ω = ω(k) qui résulte de cette variation périodique a la forme d'une structure de bande à l'intérieur de laquelle il existe des bandes interdites photoniques où la propagation du champ électromagnétique est interdite. En dehors de ces bandes, i.e. dans les bandes photoniques, se trouvent les propriétés de dispersion des cristaux photoniques.Le but de ce travail de thèse est de concevoir, de fabriquer et de caractériser des dispositifs à cristal photonique à gradient. Ces dispositifs ont été conçus de façon à s'appliquer dans les domaines allant des micro-ondes à l'optique. Nous avons conçu des dispositifs à partir de cristaux photoniques dont les propriétés dispersives les rendent analogues à des milieux linéaires, homogènes et isotropes (LHI). À la maille élémentaire de ces cristaux photoniques LHI, nous avons appliqué un gradient pour réaliser des lentilles à gradient 1D. Des résultats importants concernant la conception, la fabrication et la caractérisation expérimentale d'une lentille plate à gradient d'indice fonctionnant dans la bande X des micro-ondes sont reportés. Celle lentille focalise une onde plane incidente et collimate l'onde émise par une source ponctuelle situés dans son plan focal. Si cette lentille constitue en soi un démonstrateur et valide la démarche mise en œuvre pour la concevoir, ses applications potentielles concernent particulièrement les antennes. Nous réalisons également plusieurs lentilles à gradient 2D dont des lentilles de Lüneburg et Half Maxwell Fisheye; leurs applications aux antennes sont importantes. Nous nous intéressons aussi à la réalisation de lentilles optiques à gradient d'indice dites « SELFOC® ». Dans le but de confirmer les propriétés dispersives remarquables qui ont été mises en évidence, nous avons poursuivi dans ce sens en revisitant une expérience classique qui met en évidence l'existence des ondes évanescentes : celle du « double prisme à angle droit ». Nous mettons également en évidence le phénomène de « réflexion totale frustrée » ainsi que le décalage, découvert par Goos et Hänchen, que subit l'onde réfléchie sur le dioptre. Ce sont ces deux points — réflexion totale frustrée et effet Goos-Hänchen — que nous vérifions dans le cas de cristaux photoniques LHIArtificially structured materials that are photonic crystals are commonly used for their dispersive properties. Their dielectric constant varies periodically across the wavelength in two or three directions with a sufficiently high index contrast. The resulting dispersion relation ω = ω(k) of the periodic variation has the form of a band structure within which there are photonic bandgaps in which the propagation of the electromagnetic field is prohibited. Outside of these bands, i.e. in the photonic band, there are the dispersion properties of the photonic crystals.The aim of this thesis is to design, fabricate and characterize graded photonic crystal devices. These devices were designed to be applied in areas ranging from microwaves to optics. We designed devices from photonic crystals with dispersive properties which make them similar to linear, homogeneous and isotropic media (LHI). In the unit cell of the LHI photonic crystal, we applied a gradient to achieve 1D graded lenses. Important results regarding the design, manufacturing and experimental characterization of a flat lens GRIN operating in X-band microwaves are deferred. This lens focuses an incident plane wave and collimates the wave emitted by a point source located in its focal plane. If this lens is itself a demonstrator and validates the approach implemented for the design, its potential applications particularly concern antennas. We also carry several 2D graded lenses including Lüneburg and Half Maxwell Fisheye lenses; their applications to the antennas are important. We are also interested in making optical graded index lenses called "SELFOC®".In order to confirm the remarkable dispersive properties that have been identified, we continued in that direction by revisiting a classic experiment that highlights the existence of evanescent waves: the "double right angle prism". We also highlight the phenomenon of "frustrated total internal reflection" and the shift discovered by Goos and Hänchen suffered by the reflected wave on the interface. It's these two points – frustrated total internal reflection and Goos-Hänchen effect - that we check in the case of LHI photonic crystals
6
Hernandez, Felipe Bueno. "Sensor de força utilizando Fiber taper." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-27072016-074912/.
Abstract:
Este trabalho teve por objetivo desenvolver e caracterizar um sensor de força utilizando uma fibra óptica modificada pelo processo conhecido como Fiber tapering. A fibra quando modificada deixa exposto o campo evanescente, o que a torna sensível a influências externas, e a luz guiada na fibra pode vir a sofrer reflexão interna total frustrada ao entrar em contato com materiais. Ao envolver a região modificada por um material elastomérico, a área de contato e consequentemente a atenuação torna-se uma função da intensidade da força aplicada, possibilitando então relacionar a força a atenuação da luz. Baseando-se nesse efeito, foi criado um sensor de dimensões reduzidas, de rápida resposta, linear, altamente sensível e de boa repetibilidade. Foi criado também um circuito eletrônico utilizando amplificadores operacionais para a aquisição e processamento do sinal proveniente da fibra e selecionado um sensor comercial comum para a realização de experimentos e comparações. Ambos os sensores foram posicionados sobre uma balança de precisão e submetidos a diversos esforços obtendo-se dados sobre a resposta estática. Em seguida utilizando um shaker eletrodinâmico foram medidos os tempos de resposta a uma entrada degrau, e realizando esforços repetitivos foram analisados os desvios das medidas lidas pelos sensores.The aim of this research was to develop and characterize a force sensor using a modified optical fiber by a process known as Fiber tapering. The modified fiber leaves the evanescent field exposed and prone to external influences and the guided light may suffer frustration of total internal reflection upon contact with materials. When covering the modified fiber section with an elastomeric material, the contact area and therefore the attenuation becomes a function of the applied pressure, making it possible to relate force to attenuation in light intensity. Based on this effect, a small sensor was created, having a quick response time, with high linearity, high sensitivity and good repeatability. Along with the sensor, an electronic circuit using operational amplifiers was designed for acquisition and processing of the signal obtained from the optical fiber. In addition, in order to perform experiments and comparisons, a standard force sensor was chosen. Both sensors were placed over a precision weighing scale and had different intensities of force applied on them, and after that, data regarding static measurements was gathered. The response time was obtained using an electrodynamic shaker and applying a step input. Furthermore, data was gathered about the deviations on the measurements by performing a repetitive set of compressions.
7
Lin, Yi-Shu, and 林義書. "Analysis of Frustrated Total Internal Reflection (FTIR) Multi-touch Mode." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38868223314541268555.
Abstract:
碩士義守大學
機械與自動化工程學系碩士在職專班
101
There are many different methods for detecting multi-touches on the device surfaces, which all have their advantages and disadvantages. Some of the methods require a lot of pressure to be activated; others are activated even if the user is only close to the surface. Most of the technologies are only used to detect touches, but some of the technologies can be used to detect hands. To use these advantages and overcome their disadvantages should be researched in the future. This study presents an optical technology, which are called Frustrated Total Internal Reflection (FTIR). This technology worked with infrared light reflected by fingertips, captured by an IR-sensitive camera. The multi-touch positions were determined through the well-known software. A tabletop hardware setup is successfully presented, which combines the FTIR eequipment included of the acrylic plate, the array IR-LED lights, a cameras, and a projector, etc.. In the process of this study easy to use software was developed by NUI group, for rapidly testing various processing steps which are needed for the detection process. Additionally, three different thickness of the complaint layer were investigated for the touching performance, namely 0.1-mm- PET, 1.0-mm- PVC and 3.0-mm-thickness PVC, respectively. Experimental results show that 1.0-mm-thickness PVC demonstrated a higher multi-touch sensitivity. With this FTIR system, images can be captured, preprocessed, analyzed, resulting information post-processed and afterwards sent to an application.
8
Huang, Hsin-Yuan, and 黃薪源. "Turbidity Monitoring of Electrical Discharge Machining by Frustrated Total Internal Reflection." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5963dj.
Abstract:
碩士國立中央大學
光機電工程研究所
106
The purpose of this study is to develop an optical turbidity measured system. The concentration of EDM neutral oil is an important parameter in the EDM. According to measuring the turbidity of EDM neutral oil changing the velocity of jet flow and we can reduce the carbon deposition to stay on the processing surface, so that the processing environment to maintain the best processing concentration. To improve the machining precision and life of EDM.
9
CHEN, REN-FONG, and 陳人鳳. "Fingerprint Image Mosaicking and Recognition Based on Frustrated Total Internal Reflection." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/zn7b7c.
Abstract:
碩士國立臺北科技大學
資訊工程系
107
Although capacitive fingerprint technology is a mature technology, and optical fingerprint technology has matured in recent years, fingerprint images generated by FTIR technology has difficulty in covering a large range of fingerprint areas, the resolution of the fingerprint image is not good also, and difficult to have a stable fingerprint texture contour shape cause the same fingerprint to be non-reproduced becuse of to reduce hardware space for applied to embedded systems. The characteristics of the above-mentioned fingerprint image are greatly different from the fingerprint image those taken by the capacitive fingerprint sensor, and the fingerprint image commonly used fingerprint mosaicking and identification algorithm are all taken out by the capacitive fingerprint sensor, so the algorithm cannot be applied on the images thoses taken by the FTIR fingerprint sensor. In order to solve the above problems, this paper proposes a lightweight system based on the comparison calculation algorithm for a descriptor whose describe the features of the block, and using this to mosaicking and identifying fingerprint images. The descriptor has high tolerance to uneven brightness, and also allows mosaicking and identification comparison in the case of slight distortion of the fingerprint ridge. In the calculation algorithm of the comparison, the matrix operation is used to calculate the similarity between the descriptor. The similarity is used to match the descriptor, and the RANSAC is used to filter out the wrong matching. In addition, the system also corrects the distortion of the fingerprint image generated by the FTIR technology. The fingerprint identification results of the system proposed in this paper are more stable than those existing descriptor matching algorithm. In the low-resolution fingerprint image with poor texture reproducibility, this paper has a more stable result of the identification.
10
"Applications of frustrated total internal reflection for short interaction length devices in photonic integrated circuits." SOUTHERN METHODIST UNIVERSITY, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3366145.
11
Sheng-Sui-He and 何昇遂. "Using Frustrated Total Internal Reflection Methods and Stimulating Surface Plasma Waves Configuration toOlive Oil Measurement." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/c9f3qq.
Abstract:
碩士健行科技大學
電子工程系碩士班
105
In this paper, the use of frustrated internal total reflection method and stimulating surface plasma wave configuration(Kretschmann configuration, Otto configuration). In this paper, the experimental study on the surface plasmon resonance angle of cottonseed oil in pure olive oil and inferior olive oil was studied by referring to the change of the thickness of gold, silver and copper film. The results of the paper are: Pure olive oil in Kretschmann configuration, gold film thickness is 40 nm, silver film thickness is 50 nm, copper film thickness is 40 nm, there is optimization of the surface plasma wave resonanc angle. Otto configuration, gold film thickness is 150 nm, silver film thickness is 305 nm, copper film thickness is 150 nm, there is optimization of the surface plasma wave resonanc angle. We measured cottonseed oil in poor olive oil, in Kretschmann configuration, gold film thickness is 41 nm, silver film thickness is 53 nm, copper film thickness is 42 nm, there is optimization of the surface plasma wave resonanc angle. Otto configuration, gold film thickness is 160 nm, silver film thickness is 300 nm, copper film thickness is 150 nm, there is optimization of the surface plasma wave resonanc angle.
12
Wu, Hung-Tze, and 吳宏澤. "Excitation of Surface Plasma Waves to Inorganic Compounds by the Method of Frustrated Total Internal Reflection." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/96111152060299058851.
Abstract:
碩士清雲科技大學
電子工程所
99
This thesis are based on frustrated total internal reflection method and prism-coupled excitation configuration (i.e. Kretschmann configuration and Otto configuration) of SPW to the absorption of the resonance angle depth of surface plasma waves of the inorganic compounds (H2S, CO, CF4, SO2, HCN).This study also applied Fresnel Formula theory to derive the three layers reflectance formula. The MATLAB software was used to computer Simulation.
13
Chung, Chao-Kai, and 鍾朝凱. "Using the Excitation Surface Plasma Waves of Optical Frustrated Total Internal Reflection to the Vacuum Measurement System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/15257866893693515866.
Abstract:
碩士清雲科技大學
電子工程研究所
94
The research is excitation of surface plasma wave (SPW) in thin metal film by the method of optical frustrated total internal reflection (OFTIR) to the vacuum. The research used Otto configuration and Kretschmann configuration to exciting surface plasma waves. In recent years, the vacuum is the technique to applied of widely in the industry. The vacuum purity is effect to the quality of a lot of developments of industry. Used vacuum pump is extract the air from the vacuum. The purpose is change surface plasma waves resonant angle , and examines purity of the vacuum. This technique to adopt dielectric constant of change achieve vacuum purity of measure. Because of gaseous components and density content is different in the air. When extract the vacuum , the dielectric constant will change the components and content .That change of the dielectric constant is precisely this measure technique of quality. The technology is different from vacuum measurement system. The new technology use surface plasma waves to measure purity in vacuum. This paper will be application computer to simulate.
14
Chen, Guan-Yu, and 陳冠宇. "Using frustrated total internal reflection and excitation surface plasma waves methods to resonance angle of different concentrations iodine." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/55628168042295915141.
Abstract:
碩士健行科技大學
電子工程系碩士班
102
This research project is using the excitations of surface plasma waves by the method of frustrated total internal reflection and Kretshmann configuration, different concentrations iodine of resonance angle. Experimental design light path of the laser light as the excitation of the surface plasma wave of the incident light source, use rotating platform and Krestchmann configuration, and then use of the power meter to detect the intensity of light under different incident angles, the detected the experimental optical signal into the computer, analysis and study, then get different concentrations of iodine surface plasma resonance angle. This research is to use the Kretshmann configuration (prism- metal- iodine solution).
15
Chiu, Kuo-Hua, and 邱國華. "The Study of Gas Sensors Using Excitation Surface Plasma Waves by the Method of Frustrated Total Internal Reflection." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/14848300263873457564.
Abstract:
碩士清雲科技大學
電子工程研究所
94
The concept of this study is excitation surface plasma waves by the method of frustrated total internal reflection. Since the dielectric constants of all kinds of gases are not the same, we can discriminate from the gases which have different dielectric constants when exciting surface plasma waves. These simulations use a formula from the theories of surface plasma waves. We compared these gases in Otto configuration with Kretschmann configuration ones. And we’ll design and fabrication the experiment setup. We use a parallel light to be the light source, a rotation stage rotate systems which are Otto configuration and Kretschmann configuration, then detecting the intensity of surface plasma waves at different incident angles. We’ll also design the setups to apply in industry and public place. This study is an application of environment engineering based on electro-optical system. We hope this gas sensor can prevent accidents from toxic gases in industry in the future, and protect human’s life at home and public place.
16
Chiou, Ji-Zheng, and 邱繼正. "Using the Excitation Surface Plasma Waves of Optical Frustrated Total Internal Reflection to the Chlorine and Halogen-methane Measurement." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/06155637007896845961.
Abstract:
碩士清雲科技大學
電子工程系所
96
This research used the optical frustrated total internal reflection by the coupling of prisms to excite surface plasma waves to measure the resonant angle of the chlorine and Halogen-methane (including the fluoromethane, chloromethane, bromomethane, and iodomethane). During the process of this research, the Otto configuration and KR configuration are used to proceed the special analysis on the chlorine and Halogen-methane, and through the simulative experimental investigation into the tiny variation of dielectric constants of Halogen gas, the resonant angle and depth of absorption of the to-be-investigated gas can be accurately measured. Thus, this optical measuring system can be confirmed with high sensitivity. The measurement of the resonant angle and findings of gas gap or metal film are expected to practically apply to the industrial safety investigation into harmful gas channels in the future. Through the protection of the investigating system, the warning information can be given in time, the labor’s safety in the work place can be ensured, and the occurrence of work accidents can be prevented.
17
Huang, Pei-Qing, and 黃沛晴. "Using the frustrated total internal reflection method and different metals of Kretschmann configuration excite surface plasma wave of bleaching powder." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/41137789872419949580.
Abstract:
碩士健行科技大學
電子工程系碩士班
102
This paper is using the frustrated total internal reflection method and Kretschmann configuration to excite surface plasma wave. Using different materials and different thicknesses of metal to detect bleach surface plasma wave resonance angle. Light wavelength, the prism material, different metals, metal thin film layer thickness will affect the surface plasma wave resonance reflectivity and intensity .This study use light source (632.8nm), prism material (GaP), different materials and different thicknesses of metal on computer simulations. To find the best metal surface plasmon excitation wave film thickness. This paper bleaching powder in gold (Au) 50nm thickness and the silver (Ag) 50nm thickness are the best optimized resonance angle of surface plasma wave of Kretschmann configuration.
18
Liou, Kuen-Chi, and 劉昆其. "Using the Excitation Surface Plasma Waves by the Method of Optical Frustrated Total Internal Reflection to the toxic gases Measurement." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/94597967856313198929.
Abstract:
碩士清雲科技大學
電子工程系所
97
This thesis is based on frustrated total internal reflection and the use of prism-coupled Kretschmann configuration with the Otto configuration to the surface plasma wave excitation. Because of a variety of toxic gases (example: carbon monoxide, sulfur dioxide, ammonia, hydrogen sulphide, hydrogen cyanide, hydrogen fluoride) neither of the same dielectric constants, can be excited surface plasma waves, the sensitivity to identify the different toxic gases and the absorption of the resonance angle depth. First of all, in the study of the use of surface plasma waves of this study was derived from three-layer formula, further computer simulation. For computer simulation of the first to do a variety of toxic gas analysis and comparison, and analysis of toxic gases in the Otto configuration in the Kretschmann configuration and excitation characteristics of the surface plasma wave differences; and in the design of the experimental use of the parallel light beam when the road as the excitation of surface plasma waves incident light source, the use of spin rotation stage to change the angle of incident light into the prism, which will affect the measured size of the reflected light intensity, the use of computer storage of the reflected light intensity changes in the data analysis. Application of this study lies in industrial safety and home safety to human being into harmful toxic gas detection, as a result of effective monitoring systems to prevent, so as to avoid the occurrence of accidents disasters.
19
Lu, Tian-Nan, and 呂天男. "Using Frustrated Total Internal Reflection Method and Stimulating Surface Plasma Wave Configuration to Ingredients of the Benzopyrene of Edible Oil." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/54991029294830174013.
Abstract:
碩士健行科技大學
電子工程系碩士班
104
This research is the use of frustrated total reflection method and with different thickness of metals in Kretschmann configuration and Otto configuration to stimulate the surface plasma waves. Using computer simulation is the main point of this research. And the 632.8(nm) He-Ne laser is used as a light source in these two kinds of configurations that have been mentioned above. The conclusions of this research are just like the following statements: while benzopyrene in Kretschmann configuration, we will get a better depth from the surface plasma wave resonance angle when copper film is 40(nm), silver film is 53(nm) and gold film is 44(nm). And while benzopyrene in Otto configuration, we will get a better depth from the surface plasma wave resonance angle when copper film is 130(nm), silver film is 260(nm) and gold film is 140(nm).
20
Chiu, Hsine-Chang, and 邱顯昶. "Using the Excitation Surface Plasma Waves by the Method of Optical Frustrated Total Internal Reflection to the Alcohol Solution Detection." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/96381085405355384778.
Abstract:
碩士清雲科技大學
電子工程所
99
This study optical frustrated total internal reflection method and Kretschmann configuration are used to excite surface plasma waves in this study. We find the best configuration surface plasma resonance angle of the alcohol solution. This thesis also applied Fresnel formula to derive the three layers reflectance formula. MATLAB software was used to simulate the whole studies. Methanol and ethanol as the analytes of this thesis.Surface plasma wave is measured by the surface plasma wave measurement system. The system can sensitively measure the different types of alcohols absorption depth and the resonance angle of surface plasma wave.
21
Chiou, Yu-Huan, and 邱昱寰. "Using the Excitation Surface Plasma Waves by the Method of Optical Frustrated Total Internal Reflection to the Gallium Arsenide Solar Cell." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/62550373581851912792.
Abstract:
碩士清雲科技大學
電子工程系所
97
This paper is the use of frustrated total internal reflection method to stimulate surface plasma waves, according to Otto and the Kretschmann configuration to make configuration changes, the first layer for the prism, the second layer of metal, the third layer is silicon dioxide, the fourth layer for gallium arsenide, the fifth layer of metal as the configuration of this thesis research. As the silicon dioxide, gallium arsenide with a variety of metals have not the same dielectric constant, can stimulate surface plasma waves, the sensitivity to identify the perspective of different thickness and absorption of the resonance depth. First of all, in the study urface plasma waves using the theory derived from this study the formula of five-reflectivity, a further computer simulation. Computer simulation for the metal, silicon dioxide, gallium arsenide by the different thickness of surface plasma waves generated by analysis and comparison done by analysis of surface plasma waves to find the best angle and resonance absorption. Computer simulation is based on experiments designed to simulate the structure plan, with parallel beams stimulate surface plasma waves as the incident light source, and the use of rotation stage to change the rotation of the incident light into the prism angle of attack; this will affect the measurement of the reflected light from strength of the size of computer storage through changes in reflected light intensity data analysis.
22
Chen, Tong-Cin, and 陳銅欽. "The Study of Using Frustrated Total Internal Reflection Method and Stimulating Surface Plasma Waves Configuration to Resonance Angle of Potassium Chloride." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/89835391101177603213.
Abstract:
碩士健行科技大學
電子工程系碩士班
104
This research is based on frustrated total internal reflection type method and stimulate surface plasma wave configuration to measure its depth of resonance angle of surface plasma waves of potassium chloride . This research is the use of stimulating surface plasma waves with metal thin film which is used in gold, silver, copper in Otto configuration and Kretschmann configuration. In Otto configuration, we used the thickness of the metal thin film to simulate. The result from the computer simulation showed us that we would have better absorptive depth , when gold film thickness in 60nm,silver film thickness in 170nm,copper film thickness in 60nm. In Kretschmann configuration, we changed the thickness of the metal thin film to simulate. The result from the computer simulation showed us that we would have better absorptive depth , when gold film thickness in 30nm,silver film thickness in 50nm,copper film thickness in 30nm.
23
Chien, Chih-Hsien, and 錢志暹. "Using the Frustrated Internal Total Reflection by the Method of the Excitation Surface Plasma Waves for thin film material of Solar Cell." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/55484053028921113156.
Abstract:
碩士清雲科技大學
電子工程研究所
95
This thesis will be in coupler configuration, the anti-reflective material that increased a layer in the solar cell element-SiO2, make the whole coupler configuration is become four layer structure, influence of exciting surface plasma waves for the absorption of the different light wave-length. This thesis will for kinds of different color wave-length gas laser is the conduct into the light source, and the principle is use the frustrated internal total reflection with exciting surface plasma waves of Otto configuration and Kretschmann configuration. In addition to confer the four kinds of different color wave-length gas laser for two kinds of configuration will be produce of variety, and also to analyze compare with increased a layer film material of solar cell-SiO2 in Otto configuration and Kretschmann configuration. Therefore different the color wave-length gas laser of light source, after through the prism coupler, want to excite surface plasma waves and produce the optimization resonance corn, then the thin film and thickness of the thin film will cause some influence, hence them to be aimed at four kinds of the different color wave-length gas laser for excite to optimization resonance corns of produce, look for the best thickness between thin films, and through to simulate of the surface plasma system, then analyze the characteristic of the different color wave-length.
24
Lin, Hua-Lie, and 林華烈. "Using Frustrated Total Internal Reflection Methods and Stimulating Surface Plasma Waves Configuration to Measure the Amount of Carbon Dioxide in the Air." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/x2gp42.
Abstract:
碩士健行科技大學
電子工程系碩士班
105
This research used frustrated total internal reflection methods and stimulated surface plasma waves configuration (Kretschmann configuration and Otto configuration). At the same time, we use the surface plasma wave experimental structure of gold, silver, copper metal film thickness changes and carbon dioxide surface plasma wave resonance angle of the computer simulation measurement. The results of this paper are: carbon dioxide in the Kretschmann configuration, gold film thickness of 45 nm, silver film thickness of 60 nm, copper film thickness of 50 nm； In the Otto configuration, gold film thickness of 350 nm, silver film thickness of 600 nm, copper film thickness of 335 nm, There is optimization surface of the surface plasma wave resonance angle. Keywords: frustrated internal total reflection method, Kretschmann configuration, Otto configuration, surface plasma wave resonance angle, carbon dioxide.
25
Guo, Jian-Liang, and 郭建良. "The Study of Using Frustrated Total Internal Reflection Methods and Stimulating Surface Plasma Waves Configuration to Sodium Chloride of Resonance Angle from Food." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/24021016593092274798.
Abstract:
碩士健行科技大學
電子工程系碩士班
104
This research used frustrated total internal reflection methods and stimulated surface plasma waves configuration (Kretschmann configuration and Otto configuration) to sodium chloride resonance angle of food. This research is based on computer simulation. We used 632.8 (nm) He-Ne laser as the incident source to stimulate surface plasma waves of Kretschmann configuration (gallium phosphide prism - metal - sodium chloride) and of Otto configuration (gallium phosphide prism - sodium chloride - metal ). From the results of the computer simulation: while in Kretschmann configuration, we could find out that we would get a better depth of resonance angle when surface plasma wave copper film thickness is 25(nm) , silver film thickness is 45 (nm), gold film thickness is 28(mm). And while in Otto configuration, we could find out that we would get a better depth of resonance angle when surface plasma wave copper film thickness is 70 (nm), silver film thickness is 120 (nm), gold film thickness is 77 (nm).
26
Liu, Shun-Wen, and 劉舜文. "Using excitation surface plasma waves by the method of optical frustrated total internal reflection research resonance angle of salt in pure water affect." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/29313905943544327286.
27
Deng, Zhi-Cheng, and 鄧智承. "Using the Frustrated Total Internal Reflection Method and Exciting Surface Plasma Wave to Starch and Harmful Substance Maleic Anhydride Detection in the Food." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ppxuu7.
Abstract:
碩士健行科技大學
電子工程系碩士班
106
This paper is based on the frustrated total internal reflection method. And the Otto configuration excited surface plasma wave of measurements. Vacuum surface was starch and maleic anhydride. Our research referenced methods to surface plasma wave experimental framework with computer simulation. This main research changed simulation by different thickness metal film with gold, silver and copper. The main simulation computer refers to MATLAB soft and three reflectance formulas in the simulation study. The detail research will find in data. In the simulation experiment, different thickness metal films were changed with gold, silver and copper. Otto configuration made an experiment on starch and maleic anhydride in the food. Surface plasma wave resonance angle can be producing a phenomenon. The simulation experiment can compare with the different surface plasma wave depth of absorption. The best resonance angle will find in the curve diagram.
28
Huang, Yu-Ning, and 黃毓寧. "Using the Frustrated Total Internal Reflection Method and the Stimulating Surface Plasma Wave Configuration to Dichlorobenzene and Toluene from Harmful Gases in the Air." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/h6q7t7.
Abstract:
碩士健行科技大學
電子工程系碩士班
105
In this thesis, we use the frustrated internal total reflection method with Kretschmann configuration and Otto configuration to stimulate the surface plasma wave for the detection of dichlorobenzene and toluene in the air. This research is mainly based on the surface plasma wave experimental framework to do computer simulation. In the above two kinds of excitation surface plasma wave configuration, we use the wavelength of 632.8 nm He-Ne laser light are light source. This study mainly deals with the surface plasmon resonance angle in Kretschmann and Otto using metal films of gold, silver and copper with different thicknesses in the determination of dichlorobenzene and toluene in Kretschmann configuration or Otto configuration. Finally, the optimum depth of the surface plasma wave is obtained, and the surface plasma wave is optimized. Keywords: frustrated total internal reflection method, Kretshmann configuration, Otto configuration, surface plasma wave resonance angle, dichlorobenzene, toluene.
29
Lan, Jyun-Ming, and 籃俊明. "Using the frustrated total internal reflection to Kretschmann configuration in exciting surface plasma waves for the study of the influence of petrochemical exhaust on rain acidification." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/15788461936055251082.
30
Chang, Chia-Hao, and 張家豪. "Using the method of optical frustrated total internal reflection and the excitation surface plasma waves optical system to resonance angle of the normal saline of measurement and analysis." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/51824726868109746098.
Abstract:
碩士清雲科技大學
電子工程所
100
The paper is using the method of optical frustrated total internal reflection and the excitation surface plasma waves optical system to resonance angle of the normal saline of measurement and analysis. The Kretschmann configuration to improve the five-layer configuration. We apply the surface plasma waves optical system to find the resonance angle and absorption depth of surface plasma waves to different thickness of Ag thin film.
31
Wu, Bo-Yi, and 吳柏毅. "Using the Excitation Surface Plasma Waves by the Method of Optical Frustrated Total Internal Reflection in Kretschmann configuration to Room Temperature Water at Various Frequencies for Resonating angle influence Measurement." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/01513576699378975769.
Abstract:
碩士清雲科技大學
電子工程所
98
This thesis is based on the frustrated total internal reflection and the use of prism-coupled Kretschmann configuration to the surface plasma wave stimulation. Because the water has different dielectric constants at various frequencies, which can be used to stimulate the surface of plasma waves to identify the different water at various frequencies and the depth of absorption sensitively. Th is research is using three-layer formula to do the computer simulation. The computer simulation first focuses on water of different frequencies to analyze and compare and changes the configuration of the Kretschmann metallic film thickness to observe its difference. During the tests of rays designs we first used the helium neon laser assigns out the parallel light to stimulate the surface of plasma wave’s incident photo source and used the revolving platform to change the angle of incident light injection, which will affect the intensity size of the reflected light. Finally we used computer to save the variation data of reflected light''s intensity to the analysis and the research.