Дисертації з теми "Soft matter polymer physics"
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Lu, Zijun. "Theoretical and Numerical Analysis of Phase Changes in Soft Condensed Matter." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case15620007885239.
Повний текст джерелаAfzal, Nasrin. "Aging processes in complex systems." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23901.
Повний текст джерелаPh. D.
Vazquez, Josselin. "Étude expérimentale des mécanismes moléculaires de la friction aux interfaces polymère fondu - solide." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2003. http://tel.archives-ouvertes.fr/tel-00678448.
Повний текст джерелаAnnunziata, Mario Alberto. "Fluid-fluid demixing curves in mixtures of colloids and polymers with random impurities." Doctoral thesis, Scuola Normale Superiore, 2012. http://hdl.handle.net/11384/85832.
Повний текст джерелаZanotti, Jean-Marc. "Confinement nanométrique de fluides moléculaires : des interactions de surface à des propriétés de transport à une dimension." Habilitation à diriger des recherches, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00715833.
Повний текст джерелаMilkus, Rico. "Vibrational and mechanical properties of disordered solids." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/276423.
Повний текст джерелаDupas, Julien. "Mouillage de polymères solubles." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://pastel.archives-ouvertes.fr/pastel-00781130.
Повний текст джерелаBoire, Adeline. "Structure et dynamiques de dispersions de gliadines de blé : effet de la concentration en protéines et de la température du solvant." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20002/document.
Повний текст джерелаA substantial body of theoretical and experimental studies has been conducted over the last 30 years to establish the link between protein interaction properties, phase transitions and self-assembly. Both colloidal and polymer physics provide a new framework for understanding the driving force for proteins phase behaviour. Such studies have been limited to health-related proteins and to a few food proteins, mainly animal proteins such as casein, whey proteins. This thesis aims to apply this approach to plant proteins to better understand their interactions properties, at the basis of their functional properties within grains and food matrices. This work was carried out on a wheat storage protein isolate mainly composed of the monomeric fraction: gliadins.The objective of this PhD thesis is to investigate the phase transitions of wheat proteins to develop our knowledge on their interaction properties and the associated structures. We organized our experimental approach in five steps. First, we developed an extraction procedure to work on a protein isolate of controlled composition with molecular weight ranging from 20 to 300 kg mol-1. Then, we investigated the phase behaviour of the protein isolate by decreasing the solvent quality, here the temperature. We determined the T-Φ phase diagram, where T is the temperature and Φv the protein volume fraction, that maps the phase and structural transitions of the proteins. This study showed the existence of a liquid-liquid phase separation in the system upon a temperature decrease. We evidenced two different behaviours among proteins as a function of their MWs and highlighted a critical protein size above which the molecular weight is the key determinant of the protein properties. From the phase diagram, two structural studies were conducted. The first one studied the kinetics of phase separation upon temperature decrease to characterize the local dynamics of phase separation and to identify the mechanisms that generate concentrated systems. Two main mechanisms of phase separation have been identified: nucleation-growth and spinodal decomposition. The second one studied the effect of protein concentration on the multi-scale structure of wheat gliadins in good solvent. The integration of all these results allowed us to build the phase diagram of wheat gliadins, integrating thermodynamic and structural data
Pelras, Theophile Werner Louis. "Nanostructured Soft Matter from Compartmentalised Molecular Polymer Brushes." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/21150.
Повний текст джерелаVentura, Aude. "Polymères sous rayonnements ionisants : étude des transferts d'énergie vers les défauts d'irradiation." Phd thesis, Université de Caen, 2013. http://tel.archives-ouvertes.fr/tel-00950232.
Повний текст джерелаHuang, Zhibin. "Threshold Phenomena in Soft Matter." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1203960292.
Повний текст джерелаPaulose, Jayson Joseph. "Cooperativity, Fluctuations and Inhomogeneities in Soft Matter." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:10854.
Повний текст джерелаEngineering and Applied Sciences
Gay, Cyprien. "Nanorhéologie et autres problèmes de polymères aux interfaces." Phd thesis, Université Pierre et Marie Curie - Paris VI, 1997. http://tel.archives-ouvertes.fr/tel-00921712.
Повний текст джерелаCohen, Celine. "Mécanismes moléculaires de la friction aux interfaces polymères souples." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00669535.
Повний текст джерелаDuki, Solomon Fekade. "Topics in Hard and Soft Condensed Matter Physics." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232737384.
Повний текст джерелаLiu, Qihan. "Mechanics and Physics of Soft Materials." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493423.
Повний текст джерелаEngineering and Applied Sciences - Engineering Sciences
Ahmed, Israr. "Mathematical and computational modelling of soft and active matter." Thesis, University of Central Lancashire, 2016. http://clok.uclan.ac.uk/18641/.
Повний текст джерелаBian, Xiaoping. "Giant magnetoresistance in soft magnetic multilayers and granular films." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28680.
Повний текст джерелаGMR was found to be largest at x = 80 with well-defined oscillations as a function of the thickness of the Cu layer, mirroring the interlayer magnetic coupling. In particular, GMR with small saturation fields around Cu thickness near the second MR maximum (t$ sb{Cu}$ = 20A) will be technologically important because of the very high magnetic field sensitivity. Correlating the multilayer structure to the GMR allow us to optimize the structural parameters by enhancing the spin-dependent interfacial scattering in a high quality layered structure. Direct observation of the simple antiferromagnetic order has been achieved by the presence of the (0,0,${1 over2})$ wavevector in small angle neutron scattering experiments. A near-perfect antiferromagnetic spin arrangement is found for a Cu thickness t$ sb{Cu}$ = 20 A, that can be readily aligned ferromagnetically in a small external field of less than 200 Oe.
A complementary system, FM/Ag (FM = $ rm Ni sb{81}Fe sb{19}, Ni sb{80}Co sb{20}$ and $ rm Ni sb{66}Co sb{18}Fe sb{16})$ granular multilayer prepared by annealing multilayers, has also been studied. Enhanced magnetoresistance observed in these systems is shown to be controlled by the size, concentration and thermal stability of the magnetic precipitates in a nonmagnetic matrix. For a particular multilayer structure with a magnetic layer of 20 A, annealed at around 325$ sp circ$C, a GMR of $ sim$4% with a characteristic saturation field of 10 Oe was found, leading to a high magnetoresistive sensitivity of $ sim$0.4%/Oe at room temperature.
Geng, Jun. "Self-Assembly, Elasticity, and Orientational Order in Soft Matter." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1334550704.
Повний текст джерелаIngremeau, François. "Solutions de polymères sous écoulement : liens entre propriétés microscopiques et manifestations macroscopiques." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00912345.
Повний текст джерелаNeuville, Mathieu. "Les fluidifiants du plâtre." Phd thesis, Université Nice Sophia Antipolis, 2007. http://tel.archives-ouvertes.fr/tel-00913652.
Повний текст джерелаSoga, K. Geoffrey (Kenneth Geoffrey). "Equilibrium phase separation in polymer brushes." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40445.
Повний текст джерелаClark, Anthony. "Properties of Effective Pair Potentials that Map Polymer Melts onto Liquids of Soft Colloid Chains." Thesis, University of Oregon, 2013. http://hdl.handle.net/1794/13005.
Повний текст джерелаGemünden, Patrick [Verfasser], and Kurt [Akademischer Betreuer] Kremer. "Top-down Modeling of Hierarchically Structured Soft Matter: Liquid Crystalline Mesophases of Polymeric Semiconductors / Patrick Gemünden ; Betreuer: Kurt Kremer." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180396596/34.
Повний текст джерелаHou, Jennifer Hsin-I. "Dynamics in Biological Soft Materials." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11269.
Повний текст джерелаPhysics
Seuß, Maximilian [Verfasser], Andreas [Gutachter] Fery, and Brigitte [Gutachter] Voit. "Contact Mechanics and Adhesion of Polymeric Soft Matter Particles in Aqueous Environment / Maximilian Seuß ; Gutachter: Andreas Fery, Brigitte Voit." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1227833490/34.
Повний текст джерелаStojak, Kristen L. "Synthesis and Properties of Polymer Nanocomposites with Tunable Electromagnetic Response." Thesis, University of South Florida, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1535889.
Повний текст джерелаMultifunctional polymer nanocomposites (PNCs) are attractive for the design of tunable RF and microwave components such as flexible electronics, attenuators, and antennas due to cost-effectiveness and durability of polymeric matrices. In this work, three separate PNCs were synthesized. Magnetite (Fe 3O4) and cobalt ferrite (CFO) nanoparticles, synthesized by thermal decomposition, were used as PNC fillers. Polymers used in this work were a commercial polymer provided by the Rogers Corporation (RP) and polyvinylidene fluoride (PVDF). PNCs in this thesis consist of Fe3O 4 in RP, CFO in RP, and Fe3O4 in PVDF. Characterization techniques for determining morphology of the nanoparticles, and their resulting PNCs, include x-ray diffraction, transmission electron microscopy and magnetometry.
All magnetometry measurements were taken using a Quantum Design Physical Property Measurement System with a superconducting magnet. Temperature and external magnetic field magnetization measurements revealed that all samples exhibit superparamagnetic behavior at room temperature. Blocking temperature, coercivity and reduced remnant magnetization do not vary with concentration. Tunable saturation magnetization, based on nanoparticle loading, was observed across all PNCs, regardless of polymer or nanoparticle choice, indicating that this is an inherent property in all similar PNC materials.
Tunability studies of the magneto-dielectric PNCs were carried out by adding the PNC to cavity and microstrip linear resonator devices, and passing frequencies of 1–6 GHz through them in the presence of transverse external magnetic fields of up to 4.5 kOe, provided by an electromagnet. Microwave characteristics were extracted from scattering parameters of the PNCs. In all cases, losses were reduced, quality factor was increased, and tunability of the resonance frequency was demonstrated. Strong magnetic field dependence was observed across all samples measured in this study.
Wallace, Matthew L. "The rigidity transition in a short-chain polymer glass." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26794.
Повний текст джерелаCodina, Sala Joan. "Activity Mediated Interactions in Soft Matter. Structure, Interactions, and Phase Transitions." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/663988.
Повний текст джерелаEn aquesta tesi abordem el fenomen de les interaccions emergents en matèria tova en coexistència amb matèria tova activa. Com a sistemes de matèria tova activa introduïm col·lectius de partícules autopropulsades, col·loides amb capacitat de catalitzar productes químics i medis granulars agitats. Primer de tot estudiem en detall un model molt estès per a partícules actives, el model de les partícules actives brownianes (ABP). D'aquest model estudiem amb detall una transició de fase de no equilibri i comprovem que la transició satisfà amb les característiques d'una transició en equilibri de primer ordre. Seguidament incorporem interaccions d'alineació en el model de partícules actives i procedim a estudiar les propietats col·lectives de les suspensions de partícules actives amb alineació. Per tal d'abordar l'objectiu de la tesi introduïm partícules de prova en suspensions de partícules actives, i en medis granulars amb forçament periòdic horitzontal, amb diferents paràmetres d'activitat per tal d'estudiar les forces, des d'un punt de vista mecànic, que emergeixen entre les parelles. Hem caracteritzat les forces i hem identificat l'aparició d'interaccions de llarg abast per sistemes de partícules amb alineació i en sistemes granulars en la direcció del forçament. Finalment, tanquem la tesi amb l'estudi i modelització d'interaccions emergents per a partícules catalítiques amb simetria esfèrica. La simetria no permet a les partícules d'autopropulsar-se però la presència de partícules al seu entorn sí que dóna lloc a interaccions, en forma de velocitats induïdes. Amb un model raonable de la interacció a distància hem calibrat la magnitud de la interacció amb sistemes experimentals i procedit a caracteritzar les estructures emergents per a mescles de partícules actives i passives que van des de la formació d'agregats en forma de clústers. L'addició d'interaccions magnètiques entre partícules actives permet la formació d'estructures ramificades de tipus gel. En aquest cas l'equip experimental ha pogut comparar l'aparició d'estructures amb les mateixes característiques al laboratori.
Morvan, Jason. "HIGHLY PIEZOELECTRIC SOFT COMPOSITE FIBERS." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1334585220.
Повний текст джерелаAcharya, Hari. "Hydrophobicity, heat transfer, and momentum transfer at hard and soft aqueous interfaces." Thesis, Rensselaer Polytechnic Institute, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3600990.
Повний текст джерелаAdvancements in science and technology increasingly involve systems operating at the nanoscale. Interfaces are often present in these systems. Nanoscopic interfaces are ubiquitous in biological systems, nanofluidic devices, and integrated circuits. Properties at the interface may be quite different from the bulk, and in fact a true bulk may not be present in these systems. At the nanoscale the ratio of interface to volume is large, and the interface may have the dominant role in determining system behavior. Interfacial characteristics and their connection to interfacial properties are the focus of my thesis. Using molecular simulations of model interfaces we characterize how properties like chemistry, composition, and topography affect such phenomena such as hydrophobicity, heat transfer, and momentum transport at the nanoscale. An interface is defined simply as where two materials meet and a change in some structure or order parameter is observed. In aqueous systems, the type studied here, these changes are relatively sharp and occur within a distance of nanometers. Water molecules near the interface are expected to display sensitivity to the underlying surface. Indeed, water near a hydrophobic surface is more deformable and has greater fluctuations. The hydrophobicity of chemically heterogeneous surfaces and proteins are characterized using these nanoscopic measures. We find the effect of mixing hydrophobic and hydrophobic head group chemistries is asymmetric, i.e., it is easier to make a hydrophobic surface hydrophilic than the reverse. The role of hydrogen bonding in hydrophobic and ion hydration is also characterized using a short range water model. Hydrophobic and ion hydration are reasonably captured with the short range water model. These studies show the importance of chemical composition and local hydrogen bonding in determining surface hydrophobicity. Interfaces also lead to anomalous behavior in heat and momentum transport. Interfaces disrupt local structure and create boundary resistances that manifest in temperature discontinuities and interfacial slip. We explore the effects of chemical heterogeneity, nanoscale surface roughness, and directionality on thermal conductance across model solid-water interfaces. Interfacial conductance is directly influenced by the coupling strength or wettability of the surface. For chemically mixed surfaces, interfacial conductance does not precisely match with wettability. Surface roughness in general enhances conductance, but the improvement cannot be completely attributed to increased solvent accessible surfaced area. Momentum transport displays similar discontinuities at aqueous interfaces. These effects can be reduced through the use of osmolytes. Collectively this work highlights the influence of interfaces on heat and momentum transport. Insights are provided for modifying interfacial behavior and altering the property of interest.
Yong, Ee Hou. "Problems at the Nexus of Geometry and Soft Matter: Rings, Ribbons and Shells." Thesis, Harvard University, 2011. http://dissertations.umi.com/gsas.harvard:10311.
Повний текст джерелаPhysics
Tognoloni, Cecilia. "Formation of polymer lipid nanodiscs for membrane protein studies." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760950.
Повний текст джерелаBaugher, April Heather. "Microstructural characterization of an ultra-high-performance polyimide." W&M ScholarWorks, 1997. https://scholarworks.wm.edu/etd/1539623895.
Повний текст джерелаMccash, Kevin. "The Soft Mode Driven Dynamics of Ferroelectric Perovskites at the Nanoscale: an Atomistic Study." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5269.
Повний текст джерелаJarka, Frederick William 1961. "Electro-absorption measurements and optical nonlinearities of DCH polydiacetylene." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277976.
Повний текст джерелаFarmer, David John. "Elastic measurements in ultra-thin polymer structures." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33073/.
Повний текст джерелаLyubimov, Ivan, and Ivan Lyubimov. "Theoretical Reconstruction of the Structure and Dynamics of Polymer Melts from Their Coarse-Grained Description." Thesis, University of Oregon, 2012. http://hdl.handle.net/1794/12395.
Повний текст джерелаMuluneh, Melaku. "Soft Colloids from p(NIPAm-co-AAc): Packing Dynamics and Structure." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10454.
Повний текст джерелаPhysics
Täuber, Daniela. "Characterization of heterogeneous diffusion in confined soft matter." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-77658.
Повний текст джерелаWieland, Maria B. "Formation and deposition of polymer nanostructures on surfaces." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/30689/.
Повний текст джерелаCohen, Jack Andrew. "Active colloids and polymer translocation." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:e8fd2e5d-f96f-4f75-8be8-fc506155aa0f.
Повний текст джерелаStojak, Kristen Lee. "Synthesis and Properties of Polymer Nanocomposites with Tunable Electromagnetic Response." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4587.
Повний текст джерелаCosta, Luca. "The Force Feedback Microscope : an AFM for soft condensed matter." Phd thesis, Université de Grenoble, 2014. http://tel.archives-ouvertes.fr/tel-01063820.
Повний текст джерелаWelch, Kyle. "Emergent thermodynamics in a system of macroscopic, chaotic surface waves." Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20694.
Повний текст джерелаIwagoshi, Joel A. "Thermal Vapor Deposition and Characterization of Polymer-Ceramic Nanoparticle Thin Films and Capacitors." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1537781.
Повний текст джерелаResearch on alternative energies has become an area of increased interest due to economic and environmental concerns. Green energy sources, such as ocean, wind, and solar power, are subject to predictable and unpredictable generation intermittencies which cause instability in the electrical grid. This problem could be solved through the use of short term energy storage devices.
Capacitors made from composite polymer:nanoparticle thin films have been shown to be an economically viable option. Through thermal vapor deposition, we fabricated dielectric thin films composed of the polymer polyvinylidine fluoride (PVDF) and the ceramic nanoparticle titanium dioxide (TiO2). Fully understanding the deposition process required an investigation of electrode and dielectric film deposition. Film composition can be controlled by the mass ratio of PVDF:TiO2 prior to deposition. An analysis of the relationship between the ratio of PVDF:TiO2 before and after deposition will improve our understanding of this novel deposition method.
X-ray photoelectron spectroscopy and energy dispersive x-ray spectroscopy were used to analyze film atomic concentrations. The results indicate a broad distribution of deposited TiO2 concentrations with the highest deposited amount at an initial mass concentration of 17% TiO2.
The nanoparticle dispersion throughout the film is analyzed through atomic force microscopy and energy dispersive x-ray spectroscopy. Images from these two techniques confirm uniform TiO2 dispersion with cluster size less than 300 nm. These results, combined with spectroscopic analysis, verify control over the deposition process.
Capacitors were fabricated using gold parallel plates with PVDF:TiO 2 dielectrics. These capacitors were analyzed using the atomic force microscope and a capacohmeter. Atomic force microscope images confirm that our gold films are acceptably smooth. Preliminary capacohmeter measurements indicate capacitance values of 6 nF and break down voltages of 2.4 V.
Our research on the deposition process will contribute to the understanding of PVDF/TiO2 composite thin films. These results will lead to further investigation of PVDF/TiO2 high density energy storage capacitors. These capacitors can potentially increase the efficiency of alternative energy sources already in use.
Zhang, Ren. "Directed Self-Organization of Polymer-Grafted Nanoparticles in Polymer Thin Films." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1474652610501406.
Повний текст джерелаChakrabarti, Dwaipayan. "Slow Dynamics In Soft Condensed Matter : From Supercooled Liquids To Thermotropic Liquid Crystals." Thesis, Indian Institute of Science, 2006. http://hdl.handle.net/2005/292.
Повний текст джерелаClark, David C. "Digital Holographic Measurement of Nanometric Optical Excitation on Soft Matter by Optical Pressure and Photothermal Interactions." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4299.
Повний текст джерелаWang, Yongjun 1975. "Ionic and electronic transport in conducting polymer systems." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/9492.
Повний текст джерелаThe electrical properties of conducting polymer-based devices are investigated in order to better understand charge transport through conducting polymers and charge transfer at conducting polymer interfaces with metals and inorganic semiconductors. Experiments on two specific systems are reported: (1) an anionically functionalized conducting polymer between metal electrodes and (2) nanostructured doped conducting polymer-semiconductor interfaces. Temperature dependent impedance measurements are reported on an anionically functionalized polyacetylene sandwiched between two gold electrodes (Au|P A |Au). These measurements provide key quantities regarding the ionic carriers in this system, such as the characteristic frequency for electrode polarization, ionic DC conductivity, activation energy, effective ion concentration, and hopping frequency. Impedance measurements are also reported on samples where excess electronic carriers had been introduced with a DC bias and at temperatures sufficiently low so as to freeze out the ionic carriers. In addition to providing information about the dielectric relaxation of electronic carriers such as the characteristic frequency for electrode polarization and activation energy, these low-temperature impedance measurements also support the ionic dielectric relaxation assignments. Temperature-dependent potential step experiments, in combination with the dielectric measurements probing ionic carriers, demonstrate the direct connection between the redistribution of ions and an enhancement in carrier injection in the Au|P A |Au system. Further potential step experiments followed by relaxation through either a short- or open-circuit configuration demonstrate that the electric field distribution is closely related to the amount of injected electronic carriers. The electric field distribution changes from being mostly determined by ionic carriers to being jointly determined by both ionic and injected electronic carriers when the density of injected electronic carriers is higher than that of the effective ionic carriers. To investigate charge depletion and transport at length scales less than the depletion width of a semiconductor interface, nanoscale metal-InP contacts with low barrier height were embedded within conducting polymer-InP contacts with high barrier height. Electrical measurements on these hybrid interfaces indicate that charge transport across the nanoscale metal contacts is affected by the neighboring high barrier region when the size of the metal contacts is less than the depletion width of the conducting polymer-InP background.
Adviser: Mark Lonergan