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Дисертації з теми "Reflection spectroscopy"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Anderson, Brian Benjamin. "Grating light reflection spectroscopy /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/8600.

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2

Maslin, Keith Alan. "Far infrared reflection spectroscopy of solids." Thesis, Royal Holloway, University of London, 1986. http://repository.royalholloway.ac.uk/items/9e8b5aa1-f65f-49de-b10b-18bded0da226/1/.

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The optical properties of a selection of crystalline solids have been studied in the far infrared by dispersive Fourier transform spectroscopy. This technique allows both the amplitude and phase to be determined without any approximation. The measurements were performed on a modified Michelson interferometer, in which one of the mirrors is replaced with the sample to obtain the dispersive interferogram. The instrument was improved by replacing the stepper motor drive with a hydraulic piston and a high precision linear bearing. Sampling control was obtained by monitoring the cosine fringes from

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3

Miyoshi, Yasuyuki. "Development of point-contact Andreev reflection spectroscopy." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441970.

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4

El-Gohary, Ahmed Ramadan. "Far infrared reflection spectroscopy of layered semiconductors." Thesis, Royal Holloway, University of London, 1989. http://repository.royalholloway.ac.uk/items/f2362bc6-d941-472f-bf1e-2249df3ca6e7/1/.

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The optical properties of a selection of layered semiconductor samples have been studied in the far-infrared by reflection dispersive Fourier transform spectroscopy (DFTS) and attenuated total reflection (ATR) spectroscopy in DFTS the reference mirror in a two-beam Michelson interferometer is replaced with the sample to obtain a dispersive interferogram. This technique allows both the amplitude and phase to be measured directly. The amplitude and phase reflectivities of a variety of epitaxial layers (including a GaAs/AlAs superlattice)on GaAs substrates are presented. The measurements on the e

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5

Wang, Yang. "CdS Reflection Coefficient Determination via Photocurrent Spectroscopy." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1219593815.

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6

Tarof, Lawrence E. (Lawrence Edward) Carleton University Dissertation Engineering Electrical. "Epitaxial layer thickness measurements using reflection spectroscopy." Ottawa, 1989.

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7

Lane, Paul David. "Nanoscale surface modification studied by reflection anisotropy spectroscopy." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/5660.

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The development and control of nanoscale properties is a major goal in science and technology; for the development of such technologies it is important that there are experimental techniques which allow the monitoring of development processes in real time and in a range of environments. With this in mind much effort has been invested in the development of surface sensitive optical probes. One such technique, reflection anisotropy spectroscopy (RAS), has been applied successfully to a number of different problems since its development in the mid 1980’s. RAS as a surface specific technique is ve

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8

Sieberhagen, Rheinhardt Hendrik. "Optical characterization of semiconductors using photo reflection spectroscopy." Diss., Pretoria : [s.n.], 2002. http://upetd.up.ac.za/thesis/available/etd-11242005-142711/.

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9

Tojo, Satoshi. "Attenuated total reflection spectroscopy on alkali-metal atoms." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148543.

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10

Kniffin, Gabriel Paul. "Model-Based Material Parameter Estimation for Terahertz Reflection Spectroscopy." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/241.

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Анотація:

Many materials such as drugs and explosives have characteristic spectral signatures in the terahertz (THz) band. These unique signatures imply great promise for spectral detection and classification using THz radiation. While such spectral features are most easily observed in transmission, real-life imaging systems will need to identify materials of interest from reflection measurements, often in non-ideal geometries. One important, yet commonly overlooked source of signal corruption is the etalon effect - interference phenomena caused by multiple reflections from dielectric layers of packagin

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11

Wang, Liqun. "Infrared attenuated total reflection spectroscopy for monitoring biological systems." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33998.

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Mid-infrared (MIR) spectroscopy has been recognized as an important analytical technique, and is widely applied for qualitative and quantitative analysis of materials with an increasing interest in addressing complex organic or biologic constituents. In the presented thesis, (a) the fundamental principles for IR spectroscopic applications via in vivo catheters in combination with multivariate data analysis technique were developed, and (b) the combination with a second analytical technique ¨C scanning electrochemical microscopy (SECM) - for enhancing the information obtained at complex or freq

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12

Toomes, Rachel Louise. "Reflection-absorption infrared spectroscopy of adsorbates on Co{1010}." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362815.

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13

Wetterlind, Johanna. "Improved farm soil mapping using near infrared reflection spectroscopy." Uppsala : Dept. of Soil and Environment, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200968.pdf.

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14

Harrison, Mark Anthony. "Chemisorption on Pd(110) studied by Reflection Absorption Infrared Spectroscopy." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280846.

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15

Haq, Shamsal. "Reflection absorption infrared spectroscopy of molecules adsorbed on metal surfaces." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309271.

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16

Shick, Robert Adam. "Depth profile determination of stratified layers using internal reflection spectroscopy." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060700279.

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17

Smith, Sean A. "Development of grating light reflection spectroscopy for chemical sensing applications /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/11592.

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18

Mendes, Sergio Brito 1959. "Broadband attenuated total reflection spectroscopy in the optical waveguide regime." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282299.

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Анотація:

A broadband, multichannel, single mode, planar waveguide based ATR spectrometer was developed. A sensitivity enhancement of three orders of magnitude compared to the conventional transmission spectroscopic technique has been experimentally achieved. Applications to protein submonolayers adsorbed on glass surfaces provided the first results on the spectral characterization of those molecular films. The increased information content and the higher sensitivity response allowed us to experimentally determine the molecular orientation of organic films over a broad spectral range. The work developed

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19

Klinger, Emmanuel. "Selective reflection spectroscopy of alkali vapors confined in nanocells and emerging sensing applications." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCK029/document.

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Cette thèse vise à étudier l'interaction résonante d'un rayonnement laser avec une couche mince d'épaisseur sub-longueur d'onde de vapeur alcaline atomique confinée en nanocellule ; et les applications de détection qui en émergent.Nous nous concentrons sur la réflexion sélective se produisant à l'interface entre une fenêtre diélectrique et une vapeur résonante, et montrons que la dérivée des spectres de réflexion sélective est composée de résonances étroites dont les maxima correspondent aux positions des transitions atomiques. Ces résonances sont observées avec une largeur spectrale jusqu'à q

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20

Field, James Barry. "Determination of end - absorbed polymer density profiles by Neutron Reflection Spectroscopy." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239667.

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21

Gu, J. "Reflection-absorption infrared spectroscopy of CO and NO on Co{1010}." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599770.

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We have employed reflection-absorption infrared spectroscopy (RAIRS) as the principal technique as well as low energy electron diffraction (LEED) and thermal programmed desorption (TPD) as diagnostic tools to study the adsorption of CO, NO, NO/O, NO/O+N, and NO/K on Co{1010}. A novel reversible order-order phase transition is revealed by studies of a chemisorbed monolayer of CO on Co{1010} between 100 and 150 K. The high temperature phase consists of tilted 2-fold bridging CO molecules in the well established p(2x1)g structure, while the low temperature phase involves the movement of one-third

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22

Dixon, Richard Thomas. "Reflection absorption infra-red spectroscopy investigations on the Ni(111) surface." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/13659.

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The work has dealt with the study of sulphide and oxide overlayers on a Ni(111) single crystal sample, applying the surface science techniques of Auger Electron Spectroscopy, Low Energy Electron Diffraction and Reflection Absorption Infra-Red Spectroscopy. The later technique has been used to probe these layers at pressures up to 100's of Torr revealing novel features for the absorption of carbon monoxide and hydrogen not previously observed on this crystal face. The absorption of CO under UHV conditions was also studied using Reflection Absorption Infra-Red Spectroscopy on the sulphide and ox

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23

Hamad, Mazen Lee. "Exploring and developing the instrumental aspects of grating light reflection spectroscopy /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/8610.

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24

Shatwell, Ian Richard. "Observations of transient nonlinear optical polarization effects on reflection from opaque media." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246255.

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25

Campbell, Richard Antony. "External reflection FTIR spectroscopy of surfactants at the dynamic air-water interface." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418813.

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26

Rauh, Florian [Verfasser]. "Sensors for harsh environments using infrared attenuated total reflection spectroscopy / Florian Rauh." Ulm : Universität Ulm, 2018. http://d-nb.info/1174251859/34.

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27

謙太, 土居, and Kenta Doi. "Spectroscopy study of hydrogen particle reflection at helium-induced fuzzy tungsten surface." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13071680/?lang=0, 2018. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13071680/?lang=0.

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本研究では、低粒子エネルギー領域における金属表面からの反射水素原子を水素原子バルマーアルファ（Hα）発光ドップラー分光計測によって検出する実験系を構築し、ヘリウムによるタングステン表面の微細構造化が水素粒子反射特性に与える影響を調査した。表面構造を持たないタングステンと比較して、Fuzz構造をもつタングステン試料では200 - 300 eVの入射粒子エネルギー領域にて粒子反射係数が1/2程度まで減少することが明らかになった。<br>In this study, the author developed a measurement technique to detect hydrogen atoms reflected from a metal surface based upon the Doppler-spectroscopy of hydrogen Balmer-(Hα) emission. The developed measurement technique is a promising method to investigate the hydrogen particle reflection properties in low incident particle energy range, which has been considered difficult. The

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28

Dahliah, Diana Faraj. "Andreev Spectroscopy Measurement Of GaMnAs Spin Polarization." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1344427042.

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29

Ozensoy, Emrah. "Polarization modulation infrared reflection absorption spectroscopy for heterogeneous catalytic applications at elevated pressures." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2201.

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This dissertation focuses on bridging the pressure and complexity gap between heterogeneous catalysis and surface science by introducing new instrumental tools that can operate under catalytically relevant conditions (i.e. atmospheric pressures and temperatures higher than room temperature). Thus, some of the few detailed examples of the polarization modulation infrared reflection absorption spectroscopy (PM-IRAS) as an in situ vibrational spectroscopic tool for the elevated-pressure investigation of gas/solid interfaces on planar single crystal model catalyst systems were presented in this w

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30

Hansen, Jon_Kåre. "Electronic and optical surface properties of noble metals studied by reflection anisotropy spectroscopy." Doctoral thesis, Norwegian University of Science and Technology, Department of Physics, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2120.

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<p>The thesis demonstrates some of the possibilities of using light to measure and understand microscopic properties of noble metal and nickel surfaces. The work consist mainly of three parts:</p><p>1. The design and construction of a complete reflection anisotropy spectroscopy (RAS) system, connected to a ultra-high vacuum (UHV) chamber where samples can be cleaned and measured at pressure levels less than 1∙10<sup>-10</sup>mbar.</p><p>2. Theoretical progress in classical local field effect calculations of resonat dipoles at (110) surfaces of noble metals. Methods to solve the plane-wise dipo

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31

Borasio, Marta. "Polarization modulation infrared reflection absorption spectroscopy on Pd model catalysts at elevated pressure." [S.l.] : [s.n.], 2006. http://www.diss.fu-berlin.de/2006/351/index.html.

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32

Hu, Yuan [Verfasser]. "Surface-Enhanced Infrared Attenuated Total Reflection Spectroscopy based on Carbon Nanomaterials / Yuan Hu." Ulm : Universität Ulm, 2019. http://d-nb.info/1192373251/34.

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33

Sanders, Helen Elizabeth. "Reflection-absorption infrared spectroscopy of adsorbates on Ni{110} and nickel oxide surfaces." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320051.

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34

Aisenbrey, Christopher. "Investigation of the topology of membrane polypeptides by solid state NMR spectroscopy and attenuated total reflection infrared spectroscopy (ATR-FTIR)." Université Louis Pasteur (Strasbourg) (1971-2008), 2003. http://www.theses.fr/2003STR13188.

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Cette thèse est divisée en trois parties qui suivent des approches différentes. Dans la première partie, l'hydrophobicité d'acides amines, propriété bien connue, est déterminée. Un modèle thermodynamique détaillé de la topologie de polypeptides dérivés du LAH4 en fonction du pH a été développé. Ces modifications dans la topologie ont été mises en évidence par la technique de spectroscopie infrarouge de réflexion totale atténuée. (abrégée en anglais ATR-FTIR). Grâce à ces résultats et à un modèle théoretique, nous avons pu déterminer l'enthalpie nécessaire à l'insertion d'acides aminés de la ph

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35

Knox, David Andrew. "High resolution gas phase spectroscopy at solid/solid interfacial regions." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/high-resolution-gas-phase-spectroscopy-at-solid--solid-interfacial-regions(b5dfd0d0-7c6a-4b50-ad78-39c10c33b3ac).html.

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Understanding the behaviour of polymers which are located in the presence of nuclear materials is important in order to predict the lifespan of the materials. Artificial ageing experiments are undertaken at elevated temperatures to infer how the materials may age. This study was concerned with the monitoring of trace gases (H2O, CO2, CO and acetic acid) within a materials ageing vessel which contained ethylene-vinyl acetate (EVA) polymer and uranium in order to deduce the rate of polymer degradation and/or uptake of the gases by uranium. A novel circular multi-reflective (CMR) cell was designe

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36

Xie, Xing. "Optical properties of ZnO thin film : raman spectroscopy, optical reflection, photoluminescence and stimulated emission /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202005%20XIE.

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37

Almond, Nicholas James. "A Reflection Anisotropy Spectroscopy Study of the Au(110) Surface in the Electrochemical Environment." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507580.

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38

Parsons, David. "The use of total internal reflection fluorescence spectroscopy to study polymer and particle adsorption." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304598.

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39

Sim, Wee Sun. "Reflection absorption infrared spectroscopy of molecular adsorption and catalysis on the silver(111) surface." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627458.

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40

Ghosh, Arijit. "Degradation of polymer/substrate interfaces - an attenuated total reflection Fourier transform infrared spectroscopy approach." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291130563.

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41

Hamilton, Michelle LoAnn. "Applications of grazing-angle reflection absorption Fourier transform infrared spectroscopy to the analysis of surface contamination." Thesis, University of Canterbury. Chemistry, 2007. http://hdl.handle.net/10092/1367.

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Cleaning validation of pharmaceutical manufacturing equipment is required by legislation. Generally, wet chemical techniques are employed using swabbing and/or rinse sampling methods. These are generally either selective and time consuming, or less selective and give results in a shorter period. The infrared reflection absorption spectroscopy (IRRAS) technique explored here attempts to deliver accurate, selective surface contamination information in real time to complement current methods and reduce down-time. The IRRAS instrument used in this research is a Fourier transform infrared (FTIR) s

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42

Biswas, Somnath. "Watching Electrons Move in Metal Oxide Catalysts : Probing Ultrafast Electron Dynamics by Femtosecond Extreme Ultraviolet Reflection-Absorption Spectroscopy." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586375150350782.

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43

Carlson, Scott M. "Validation of the design of a high resolution all-reflection Michelson interferometer for atmospheric spectroscopy." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA272505.

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44

Berntsson, Ola. "Characterization and application of near infrared reflection spectroscopy for quantitative process analysis of powder mixtures." Doctoral thesis, KTH, Chemistry, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3152.

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45

Sunkari, Swapna Geetha. "IMPROVED ESTIMATION OF EPITAXIAL THIN FILM THICKNESS AND DOPING USING FOURIER TRANSFORM INFRARED REFLECTION SPECTROSCOPY." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11092004-171719/.

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Film thickness, free carrier concentration and free carrier mobility are critical figures of merit for silicon carbide epitaxial growth. Room temperature Fourier Transform Infrared (FTIR) reflection spectroscopy can estimate these parameters non-destructively and is capable of high-resolution wafer mapping. Commercially available equipment has greatly simplified the application of this technique by coupling a high performance automated spectrometer with model-based data analysis and interpretation based on the personal computer. While powerful numerical techniques run fast and efficient on mod

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46

Kim, Minseok. "A novel approach to the study of surface catalytic reactions using reflection-absorption infrared spectroscopy." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624564.

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47

Macdonald, Brian Fraser. "Reflection anisotropy spectroscopy and scanning probe microscopy studies with applications to liquid crystal alignment layers." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/11081.

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Homogeneous alignment of liquid crystal (LC) molecules is fundamental to the fabrication and optimum operation of LC devices. As a consequence of employing alignment layers with directional properties, the alignment of LC molecules is promoted. The most commonly used technique to fabricate LC alignment layers is by mechanically rubbing polymer films. However, reductions in production costs and further advancements in LC technology are now being hindered by the rubbing technique and so either a new technique or monitoring of the current technique is required. In these studies, a monitor of the

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48

Convery, James. "Reflection anisotropy spectroscopy as a potential new tool for linking macromolecular conformation to biological function." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/9473/.

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The results reported in this thesis were obtained in a research programme that employed the surface sensitive optical probe reflection anisotropy spectroscopy (RAS) and related techniques to investigate conformational change associated with electron transfer processes in the protein cytochrome P450 reductase (CPR) adsorbed onto the Au(110)/electrode interface. It was found that controlling the adsorption of an ordered layer of CPR on the Au(110) surface is difficult and far more complex than first expected. In order to understand the adsorption process further an extensive investigation using

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49

Kendix, Elsebeth Langholz <1972&gt. "Trasmission and Reflection (ATR)Far-Infrared Spectroscopy Applied in the Analysis of Cultural Heritage Materials." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2266/1/Kendix_Elsebeth_tesi.pdf.

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FIR spectroscopy is an alternative way of collecting spectra of many inorganic pigments and corrosion products found on art objects, which is not normally observed in the MIR region. Most FIR spectra are traditionally collected in transmission mode but as a real novelty it is now also possible to record FIR spectra in ATR (Attenuated Total Reflectance) mode. In FIR transmission we employ polyethylene (PE) for preparation of pellets by embedding the sample in PE. Unfortunately, the preparation requires heating of the PE in order to produces at transparent pellet. This will affect compound

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50

Kendix, Elsebeth Langholz <1972&gt. "Trasmission and Reflection (ATR)Far-Infrared Spectroscopy Applied in the Analysis of Cultural Heritage Materials." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2266/.

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Анотація:

FIR spectroscopy is an alternative way of collecting spectra of many inorganic pigments and corrosion products found on art objects, which is not normally observed in the MIR region. Most FIR spectra are traditionally collected in transmission mode but as a real novelty it is now also possible to record FIR spectra in ATR (Attenuated Total Reflectance) mode. In FIR transmission we employ polyethylene (PE) for preparation of pellets by embedding the sample in PE. Unfortunately, the preparation requires heating of the PE in order to produces at transparent pellet. This will affect compound

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