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Dissertations / Theses on the topic 'Optical polymers'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Hamer, Peter John. "Optical spectroscopy of conjugated polymers." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/265460.

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I have conducted studies of the optical properties of two model conjugated systems (poly-(p-phenylenevinylene) and a set of zinc-centred oligo-(porphyrins) ). Various optical probing techniques have been employed to study the nature and behaviour of the primary photoexcited state of poly-(p-phenylenevinylene) (PPV) and photogenerated charged states within the porphyrins. Implantation of PPV films by high energy (30ke V) ions has been employed to introduce controlled damage into the film. Subsequently, studies of the absorption, fluorescence, photo-induced absorption and photocurrent response o

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2

Wan, Wai Man Vivian. "Optical properties of conjugated polymers." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621328.

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3

Inal, Sahika. "Responsive polymers for optical sensing applications." Phd thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2014/7080/.

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LCST-type synthetic thermoresponsive polymers can reversibly respond to certain stimuli in aqueous media with a massive change of their physical state. When fluorophores, that are sensitive to such changes, are incorporated into the polymeric structure, the response can be translated into a fluorescence signal. Based on this idea, this thesis presents sensing schemes which transduce the stimuli-induced variations in the solubility of polymer chains with covalently-bound fluorophores into a well-detectable fluorescence output. Benefiting from the principles of different photophysical phenomena,

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4

Zhang, Linkun. "MECHANO-OPTICAL BEHAVIORS OF IONOMERS." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1439291328.

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5

Prêtre, Philippe Antoine Prêtre Philippe. "Relaxation mechanisms in nonlinear optical polymers /." [S.l.] : [s.n.], 1995. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11193.

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6

Maron, Elizabeth Sara. "Fluorinated styrene polymers for optical waveguides." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32281.

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A series of fluorinated copolymers were prepared and used to fabricate optical waveguides by photolithography. Reproducible syntheses were established for a buffer material, 4-fluoro-styrene-co-pentafluoro-styrene-co-[4-styren-4'-yl-2,3,5,6-tetrafluorophenylether] (bufTxx), and guiding material, Styrene-co-penta-fluorostyrene-co-[4-styren-4'-yl-2,3,5,6-tetrafluorophenyl-ether] (terTxx), as well as their precursors. The polymers were characterized by attenuated total reflection Fourrier tran

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7

Andrew, Harold Gibbons. "Design and Application of Optical Polymers." Kyoto University, 2019. http://hdl.handle.net/2433/242585.

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8

Marcus, Max. "Theory of optical transitions in pi-conjugated polymers." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:bad21c6f-a0bb-4347-87fb-4914b2b15836.

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Conjugated Polymers have attracted a great deal of research interest in recent years due to their optoelectronic properties which makes them suitable for applications in organic light-emitting devices (OLEDs) and organic photovoltaics. Their properties are strongly dependent on the electron-electron and electron-nuclear interactions as well as the disorder which is present in almost all systems at finite temperatures. In this thesis the optical properties of electronically neutral conjugated polymers will be investigated. The results obtained are general and applicable to a wide range of param

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9

Abbas, Bassam. "Linear and nonlinear optical phenomena in thin sol-gel organic-inorganic films." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298744.

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10

Jiang, Fanhui. "Real-time Optical and Mechano-Optical Studies During Drying and Uniaxial Stretching of Polyetherimide Films from Solution." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1398093793.

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11

Crawford, Kevin D. "Investigations in the use of the optical trap in the regulation of optical emission characteristics in polymer systems." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/30410.

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12

Lopez, Santiago Alejandra. "Magneto-Optic Polymers and Devices." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/347075.

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For several decades, the field of magneto-optics (MO) has demonstrated applications that have impact on every day applications such as in optical data storage, magnetic field sensing, crucial for magnetoencephalography and magnetocardiography; and compact and efficient optical isolators, among others. In the past, many of these applications and the devices designed for them have heavily relied on inorganic materials. Organic materials with a high MO response represent an interesting alternative to the inorganic equivalent by not only being a more cost efficient solution, but also by allowing t

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13

Harrison, Nicholas Torquil. "Optical and electrical excitation of conjugated polymers." Thesis, University of Cambridge, 1998. https://www.repository.cam.ac.uk/handle/1810/251643.

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The study of luminescent conjugated polymers, and their use in light-emitting diode (LED) structures, is now a well established field of research in both the academic and industrial sectors. Since their discovery, conjugated polymers with many different properties have been developed; and light-emitting diodes (LEDs) with different emission colours, improved efficiencies, and enhanced stability manufactured. However, there is still much that is unknown or poorly controlled with respect to both polymer devices, and the polymer materials themselves. The work in this thesis investigates both mate

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14

Thies, Jens Christoph. "Optical properties of chiral liquid crystalline polymers." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/590.

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15

Mohajerani, Ezeddin. "Nonlinear optical properties of dye doped polymers." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333406.

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16

Stevens, Mark Adrian. "High-intensity optical excitation of conjugated polymers." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621994.

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17

Schmidtke, Johanna Pembrook. "High-pressure optical spectroscopy of conjugated polymers." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612826.

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18

Yang, Shu-Chun. "High pressure optical studies in conjugated polymers /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9946318.

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19

Prystay, Marc C. (Marc Christopher). "Photothermal imaging of optical polymers, polymer metal interfaces and photodegradation of polyvinyl chloride." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41750.

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Photopyroelectric spectroscopy (PPES) is a relatively new nondestructive photothermal technique that uses a pyroelectric sensor placed in intimate contact with thin film samples to record the photogenerated thermal waves transmitted by the sample. In this thesis it is demonstrated that photopyroelectric spectroscopy is capable of recovering profiles of optical absorptivity in micron scale thick polymer laminates with submicron depth resolution. The pyroelectric method has also been used to characterize adhesion at polymer/metal interfaces from the photothermal impulse response using both the t

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20

Hill, Isiah Jasper Jr. "Synthesis of azodyes and polyurethanes for use as nonlinear optical materials." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/28930.

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21

Forrister, Walter B. "Synthesis of polymers exhibiting enhanced nonlinear optical effects." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/8523.

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22

Riehn, Robert. "Optical near-field investigations of π-conjugated polymers". Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620723.

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23

Ryu, Deug-Soo. "Rheo-Optical Studies on Polymers in Elongation Process." Kyoto University, 2001. http://hdl.handle.net/2433/150655.

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24

Chi, San-Hui. "Third-order nonlinear optical properties of conjugated polymers and blends." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31664.

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Thesis (Ph.D)--Chemistry and Biochemistry, Georgia Institute of Technology, 2010.<br>Committee Chair: Perry, Joseph; Committee Member: Bunz, Uwe; Committee Member: Lyon, Andrew; Committee Member: Marder, Seth; Committee Member: Trebino, Rick. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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25

Tzamalis, Georgios. "Optical and transport properties of polyaniline films." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/4148/.

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This thesis presents the results of a comprehensive study on the transport and optical properties of polyaniline (PANI) films. The films are derived by protonation (doping) of the emeraldine base form of polyaniline, as synthesized in Durham, with either 2-acrylamido-2-methyl-l-propanesulfonic acid (AMPSA) or 10- camphorsulfonic acid. Thus, two distinct PANI systems are obtained: PANI-CSA and PANI-AMPSA. The variation of the doping level can affect the metallic properties of the final system, so that samples close to the boundary as well as samples at either side of a disorder induced metal-in

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26

Lochab, Bimlesh. "Polymers for electro-optic applications." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:34ac7813-b315-415c-ac8a-eac269c23432.

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Polymer based photovoltaic cells are being intensively investigated. In such cells three key processes need to occur; namely light absorption, charge separation of the exciton, and transport of the separated charges to the electrodes. Light absorption is reliant on the optical density of the polymer. In general charge separation is achieved by blending an electron acceptor with the polymer film. However, blending materials gives rise to potentially unreliable manufacturing and lifetime issues. This thesis describes the preparation of poly(l,4-phenylenevinylene) derivatives containing dipoles

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27

Li, Weiyao. "Chemical structure and optical functions of synthetic melanin." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1627042724510547.

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28

Danielsen, P. L. "The photogeneration of defects in conducting polymers." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384448.

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29

Hegde, Shashikant G. "Investigation of optical loss changes in siloxane polymer waveguides during thermal curing and aging." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22531.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Sitaraman, Suresh; Committee Member: Chang, Gee-Kung; Committee Member: Colton, Jonathan; Committee Member: Joshi, Yogendra; Committee Member: Swaminathan, Madhavan; Committee Member: Thompson, Patrick.

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30

Sims, Marc. "Correlations between structure and optoelectronic properties of conjugated polymers." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269457.

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31

Weinschenk, Joseph Iddings III. "The synthesis of new electro-optic polymers." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184284.

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This work involves the synthesis of two types of electro-optic monomers and their corresponding polymers. The first type of monomers contain the p-oxy-α-cyanocinnamate structure and were synthesized from ω-hydroxyalkoxy-substituted benzaldehydes and methyl cyanoacetate. These ω-hydroxy-α-cyanoester monomers show a high degree of electron delocalization. Copolyesters were synthesized by copolymerization of these monomers with methyl 12-hydroxydodecanoate by the standard two-stage, high-temperature polyesterification procedure. The copolyesters, incorporating dipolar units all pointing in the sa

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32

Karlsson, Daniel. "Theoretical studies of optical absorption in low-bandgap polymers." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4349.

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<p>The absorption spectra of a recently designed low-bandgap conjugated polymer has been studied using the semi-empirical method ZINDO and TDDFT/B3LYP/6-31G. The vertical excitation energies have been calculated for monomer up to hexamer. Two main absorption peaks can be seen, the one largest in wavelength corresponding to a HOMO to LUMO transition, and one involving higher order excitations. TDDFT results are red-shifted compared to the ZINDO results. Comparison with experiment yields that short conjugation lengths are dominating. This is possibly due to steric interactions between polymer ch

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33

Watanabe, Kazuyoshi. "Self-Assembled Aromatic Conjugated Polymers with Advanced Optical Properties." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199332.

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34

Yang, Cheng. "Optical and fluorescent properties of thiophene-based conjugated polymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0005/NQ61697.pdf.

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35

Persson, Nils-Krister. "Optical modelling of conjugated polymers : from materials to devices /." Linköping : Linköpings universitet, 2005. http://www.bibl.liu.se/liupubl/disp/disp2005/tek984s.pdf.

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36

Derrick, Timothy James. "Electronic and optical properties of conjugated oligomers and polymers." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367900.

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37

Kohlman, Randolph S. "Optical Studies of The Metallic State in Conducting Polymers /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu148793199347027.

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38

Raju, N. S. "Side chain liquid crystalline polymers with nonlinear optical properties." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1997. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3379.

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39

Amarasinghe, Dimali C. V. "Solid state optical conjugated polymer amplifier, with ultrafast gain switching." Thesis, University of St Andrews, 2008. http://hdl.handle.net/10023/520.

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Conjugated polymers are organic materials which are attractive as optoelectronic devices because they have a combination of broad band emission, high gain, versatility in processing, are ductile and can be electrically pumped. This thesis describes work conducted on such conjugated polymers as amplifier devices. The conjugated polymers used in this thesis were MEH-PPV, F8BT, GP1302 and ADS233YE. The amplifier devices used were grating coupled and end coupling waveguides. Amplification of light was demonstrated and characterised on single and multiple pulses using the grating coupled structure.

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40

Latinovic, Olga S. "Structural and micromechanical properties of soft materials : An optical tweezers study /." Diss., [Free access to full dissertation available to Lehigh users only.], 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3203821.

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41

Borden, Bradley W. "A Study of Laser Direct Writing for All Polymer Single Mode Passive Optical Channel Waveguide Devices." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9805/.

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The objective of this research is to investigate the use of laser direct writing to micro-pattern low loss passive optical channel waveguide devices using a new hybrid organic/inorganic polymer. Review of literature shows previous methods of optical waveguide device patterning as well as application of other non-polymer materials. System setup and design of the waveguide components are discussed. Results show that laser direct writing of the hybrid polymer produce single mode interconnects with a loss of less 1dB/cm.

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42

Makowski, Brian Thomas. "Functionality via Confinement of Photo-Responsive Materials." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1323022488.

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43

Waalib-Singh, Nirmal. "Metastable entangled ordered structures in predeformed and preconditioned polymer optical fibres." Thesis, The University of Sydney, 2008. https://hdl.handle.net/2123/28122.

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The nature of fibre optics transmission has been the subject of various studies since the first optical fibres were discovered and manufactured in the early 1960's. However, to date, few have investigated, let alone correlated results from the mechanical and thermal testing of these fibres with respect to those optical properties that are usually reported.

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44

Gelsen, Olaf Michael. "Electro-modulation spectroscopy of arylene vinylene polymers." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283950.

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45

Amarasinghe, Dimali. "Solid state optical conjugated polymer amplifier : with ultrafast gain switching /." St Andrews, 2008. http://hdl.handle.net/10023/520.

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46

Lugassy, Cyrille. "Synthesis and characterization of optical fibres made from organic polymers." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29452.

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The objective of the thesis is the preparation and study of properties of polymer optical fibres.<br>The first part of the thesis describes the complete process of making polymer optical fibres from a monomer using styrene as a reagent. A solid preform is obtained from the polymerization before being drawn into a fibre. Once obtained, the fibre is characterized in terms of its chemical (composition), optical (acceptance angle, attenuation, refractive index profile), physical (elongation-to-break) and spectroscopic (Infrared, Raman, NMR) properties. Polarized Raman spectroscopy is employed to a

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47

Yaliraki, Sophia Nicolas. "Theoretical studies of electronic and nonlinear optical properties conjugated polymers." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42658.

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48

Duncan, Roger Glenn. "Electro-Optic Properties of Self-Assembled Non-Linear Optical Polymers." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34415.

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Electrostatic self-assembly was used to fabricate several samples of polymers known to have non-linear optical behavior. These samples characteristics were measured with interferometry and their electro-optic coefficients determined to be on the order that of LiNbO3. The self-assembled samples are shown to have an enhanced polar order compared to that of more traditional poled polymers. Furthermore, this polar order is intrinsic and thus doesn't require electric field poling and does not decay with time. The self-assembly process is therefore shown to possess great potential for the fabricatio

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49

Zhang, Xuan ZHANG. "Polymer Films With Enhanced Through Thickness Optical Transmission and Compression Modulus with Electric Field Aligned Glass Fiber/Bubbles." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1463961142.

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50

Mandadi, Deepika. "A Characterization of Caffeine Imprinted Polypyrrole Electrode." TopSCHOLAR®, 2009. http://digitalcommons.wku.edu/theses/130.

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Nanotechnology holds great potential for improving our lives by creating many new materials and devices in medical sciences, electronics and also in energy production. Molecularly imprinted polymers (MIPs) are highly stable synthetic polymers that possess molecular recognition properties due to cavities created in the polymer matrix that are complementary to an analyte both in shape and in positioning of functional groups. These MIPs have been widely employed for diverse applications (e.g., in chromatographic separation, drug screening, chemosensors, catalysis, immunoassays etc) due to their s

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