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Dissertations / Theses on the topic 'Epithelial cells – Electric properties'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Thomson, Susmita. "Local feedback regulation of salt & water transport across pumping epithelia : experimental & mathematical investigations in the isolated abdominal skin of Bufo marinus." University of Western Australia. Dept. of Physiology, 2003. http://theses.library.uwa.edu.au/adt-WU2003.0022.

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[Truncated abstract] This study describes the results of a four and a half year investigation examining local regulation of ion transport through pumping epithelial cells. The study focussed on the standard isolated toad skin preparation, made famous by Hans Ussing. Originally, the objective was to perform some simple manipulations on the isolated toad skin, a standard and well-tested epithelial layer, which, according to the literature, was a well-behaved and stable preparation. The purpose of doing these toad skin experiments was to gain familiarity with the experimental techniques, such as

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2

Francou, Alexandre. "Epithelial properties of Second Heart Field cardiac progenitor cells." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4062.

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Une partie du cœur est formée à partir des cellules progénitrices du second champ cardiaque, qui permettent une élongation rapide du tube cardiaque. Des défauts dans le développement de ces cellules entrainent des malformations cardiaques congénitales. Ces cellules sont localisées dans le péricarde dorsal au sein du mésoderme pharyngé. Mon travail de thèse a permis de démontrer pour la première fois que ces cellules sont épithéliales et polarisées, et qu’elles forment des filopodes dynamiques du côté basal. La délétion du facteur de transcription Tbx1 perturbe la polarité des cellules et la fo

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3

Wang, Entong. "Directed migration, re-orientation and inhibited proliferation of lens epithelial cells in applied electric fields." Thesis, University of Aberdeen, 2001. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU485602.

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Physiological electric fields (EFs) exist in the vertebrate lens, but the importance of the endogenous EF is not well understood yet. In the present study, an applied EF to mimic endogenous EFs was applied to cultured lens epithelial cells (LECs) to investigate the effects of EFs on the behaviours of LECs and the underlying mechanisms. It was showed that LEG migration was directed and migration rate was increased in applied EFs, and serum or growth factors were required for these EF-induced cell responses. LECs elongated and re-oriented to lie perpendicular to field vector. Healing of LEG mono

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4

Charles, Amelia Kate. "The oestrogenic and genotoxic properties of cosmetic chemicals in human breast epithelial cells." Thesis, University of Reading, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542056.

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5

Liu, Yu, and 劉鈺. "Biological properties of EBV-encoded latent membrane protein 1 in nasopharyngeal epithelial cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31242078.

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6

Dodd, Sara. "Hydrodynamic and hydrogel properties of mucins from cultured guinea-pig tracheal epithelial cells." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287166.

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7

Liu, Yu. "Biological properties of EBV-encoded latent membrane protein 1 in nasopharyngeal epithelial cells /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23001008.

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8

Bentivegna, Valerie. "The biomechanical properties of epithelial cells and tissue in two and three dimensions." Thesis, University of Dundee, 2019. https://discovery.dundee.ac.uk/en/studentTheses/0e957e85-9e8d-46f7-b6f0-9ab3307c43bc.

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During development and disease progression, cells and tissue undergo mechanical changes and alter their response to external physical cues. This is also true during the onset of colorectal cancer, the second most common cause of cancer deaths in the Western world. Before the changes that occur during cancer onset can be understood, a better appreciation is needed of the mechanical forces and properties involved. Therefore, there is a drive to develop novel tools to accurately measure biomechanical properties at different spatial scales. 3D cell models are a useful method to understand the mech

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9

Weaver, Jennifer. "Development of an in vitro model for investigating the properties of human prostate epithelial cells and prostatic carcinoma cells /." St Andrews, 2008. http://hdl.handle.net/10023/755.

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10

Nauseef, Jones Trevor. "An investigation of the molecular and biophysical properties of metastatic cells." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/3150.

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Prostate cancer presents a significant paradox: it is very common, yet rarely fatal. To wit, the prostate is the most common non-skin tissue for cancer diagnosis in men in the United States. Despite its high incidence, fatal malignancy occurs in only a small fraction of diagnosed men. The fatal cases are characteristically defined by distant spread in the body, also known as metastasis. In order to metastasize a cancer cell must complete several sequential steps. These include degradation of and invasion through the epithelial basement membrane, typically through the loss of static intracellul

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11

Weaver, Jennifer. "Development of an in vitro model for investigating the properties of human prostate epithelial cells and prostatic carcinoma cells." Thesis, University of St Andrews, 2009. http://hdl.handle.net/10023/755.

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Prostate cell lines were derived from two regions of prostate tissue from the same patient. The objective was to produce cell lines (as a useful in vitro model) from these two different regions which exhibit different properties for carcinoma development. The tissue was obtained from patients suffering from benign prostate hyperplasia undergoing trans-urethral resection. Tissue was taken from the deep (peripheral) and superficial (peri-urethral) areas. The cells were immortalised by transduction with constructs over expressing the cdk4 and hTERT genes. These cell lines were then characterised

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12

Yu, Shuqing [Verfasser]. "Computational Modelling of Opto-electric Properties of Nanowire Array Solar Cells / Shuqing Yu." Kassel : Kassel University Press, 2014. http://d-nb.info/1065322658/34.

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13

Mießler, Katharina Sophie [Verfasser]. "Analysis of hydrostatic pressure effects on the barrier properties of mammary epithelial cells / Katharina Sophie Mießler." Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1196804028/34.

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14

Dunning-Foreman, N. L. "Investigating the properties of cancer stem cells and epithelial to mesenchymal transition in human prostate cancer." Thesis, Nottingham Trent University, 2012. http://irep.ntu.ac.uk/id/eprint/67/.

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In recent years, the cancer stem cell hypothesis has emerged as a compelling but controversial model of cancer progression. Contrary to the clonal evolution model, the cancer stem cell hypothesis postulates that, akin to normal tissues, tumours are hierarchical and only a rare subpopulation of cells, so-called “cancer stem cells” (CSCs), possess the unique biological properties required for tumourigenesis. In addition to tumour initiation, cancer stem cells are held solely accountable for tumour differentiation, tumour maintenance, tumour spread and tumour relapse following therapy. Of late, t

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15

Nightingale, Wendy Denise. "Electrical characteristics of an identified insect motoneurone cell body : a current- and voltage-clamp study." Thesis, University of St Andrews, 1989. http://hdl.handle.net/10023/14077.

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1. The electrical characteristics of the cell body of an identified excitatory motoneurone (cell 3) from the cockroach (Periplaneta americana) have been studied under current- and voltage-clamp. 2. Under voltage-clamp depolarising command pulses evoked an outward current which increased with the magnitude of the command step up to approximately +100mV, a component of the current developed more slowly and took longer to reach a maximum. With increasing depolarisation the outward current response fell to a lower level before further increasing. This current response gave rise to a characteristic

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16

Karlsson, Markus. "Oxidative stress-related damage of retinal pigment epithelial cells : possible protective properties of autophagocytosed iron-binding proteins." Doctoral thesis, Linköpings universitet, Avdelningen för neurovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111558.

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Oxidative stress is a major pathogenic factor in the development of age-related macular degeneration (AMD), which is the most common cause of severe central visual impairment in the elderly population in the western world. It is believed that the degenerative process starts in the retinal pigment epithelium (RPE). The post-mitotic RPE is a single layer of pigmented cells located behind the photoreceptors – rods and cones – of the retina. Daily, the RPE cells phagocytose and recycle the expended tips of the photoreceptor outer segments. This heavy phagocytic burden leads to substantial oxidativ

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17

Subisak, Angel Dharshini. "Role of Substrate Stiffness on Migratory Properties and Epithelial to Mesenchymal Transition in Human Lung Cancer Cells." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1356943256.

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18

Chan, Yau-chi, and 鄭有志. "Cellular electrophysiology of cardiac pacemaker channel-implications on novel drug and gene therapies development." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290458.

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19

Magalhães, Ana Carolina de. "Investigation of the influence of red and infrared illumination on mechanical properties of cells: Photobiomodulation." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-05012017-145626/.

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The photobiomodulation therapy (PBMT) has many demonstrated applications in the health area including anti-inflammatory and wound healing effects. The main objective of this work is to verify if the PBMT causes measurable changes in the mechanical properties of cells, specifically in red blood cells, epithelial cells and fibroblasts. In addition, to contribute to the knowledge of the action mechanisms of the PBMT, this study intends to support applications of the PBMT during invasive procedures, such as the direct photo-treatment of the blood in surgical procedures with cardiopulmonary bypass,

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20

Salimi, Elham. "Dielectrophoresis study of electroporation effects on dielectric properties of biological cells." American Institute of Physics, 2016. http://hdl.handle.net/1993/31945.

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Electroporation affects the dielectric properties of cells. Dielectric measurement techniques can provide a label-free and non-invasive modality to study this phenomenon. In this thesis we introduce a dielectrophoresis (DEP) based technique to study changes in the cytoplasm conductivity of single Chinese hamster ovary (CHO) cells immediately after electroporation. Using a microfluidic chip, we study changes in the DEP response of single CHO cells a few seconds after electroporation. First, in order to quantify our DEP measurement results and relate them to the cells internal conductivity, we i

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21

Lo, Kwok-fung Angela, and 勞幗鳳. "Alterations of gene expression and biological properties in nasopharyngeal epithelial cells by the Epstein-barr virus encodedlatent membrane protein 1." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31243423.

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22

Paye, Julie Melissa Davis. "Effect of the Insulin-like Growth Factor (IGF) Axis on the Transport Properties of Endothelial and Epithelial Cells In Vitro." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/29071.

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The overall objective of this research consists of two main parts: (1) provide evidence that autocrine production of IGF-I modulates tight junction permeability and (2) demonstrate the ability of IGFBPs to regulate IGF-I delivery across cell layers. To meet the first objective, parental and IGF-I secreting bovine mammary epithelial cells were tested for cell layer permeability, tight and adherens junction proteins, IGF-IR, and a downstream signaling components of IGF-IR. In comparison with parental cells, IGF-I secreting cells had high levels of IGF-IRs, but low levels of the junction compon

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23

Krygowski, Thomas Wendell. "A novel simultaneous diffusion technology for low-cost, high-efficiency silicon solar cells." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/22973.

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24

Moritz, Joseph M. (Joseph Michael). "Increased differentiation properties in two- and three-dimensional coculture of hepatocytes and liver epithelial cells by a novel quantitative functional liver assay." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39352.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2007.<br>Includes bibliographical references (leaves 100-121).<br>Hepatic stem cells in adult rats are activated by chemical injury to the liver, causing hepatic progenitor cells to proliferate, integrate into the hepatic plates, and differentiate into hepatocytes. In an attempt to model this process in vitro, we established and quantitatively assayed the differentiation properties of a strain of rat liver epithelial cells (LEC), lig8, grown in coculture with mature liver cells in a three dimensional, perfus

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25

Harrop, Ceri. "Biochemical, biophysical and network properties of mucins and mucus gels produced by human bronchial epithelial cells in response to disease-relevant mediators." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532253.

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26

Thomsen, Elizabeth Alice. "Characterisation of materials for organic photovoltaics." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/462.

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27

Lagerquist, Hägglund Christine. "Affinity-, partition- and permeability properties of the human red blood cell membrane and biomembrane models, with emphasis on the GLUT1 glucose transporter /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3525.

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28

Ivey, Jill Winters. "Investigating the Applications of Electroporation Therapy for Targeted Treatment of Glioblastoma Multiforme Based on Malignant Properties of Cells." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78806.

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Glioblastoma multiforme (GBM) is the most common and lethal primary brain cancer with an average survival time of 15 months. GBM is considered incurable with even the most aggressive multimodal therapies and is characterized by near universal recurrence. Irreversible electroporation (IRE) is a cellular ablation method currently being investigated as a therapy for a variety of cancers. Application of IRE involves insertion of electrodes into tissue to deliver pulsed electric fields (PEFs), which destabilize the cell membrane past the point of recovery, thereby inducing cell death. While this tr

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29

Lewis, Andrew J. "Characterisation of organic materials for photovoltaic devices." Thesis, St Andrews, 2006. http://hdl.handle.net/10023/144.

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30

Qiu, C. X. (Xing Xing). "Characteristics of ZnOCuInSe2 heterojunctions and CuInSe2 homojunctions." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65991.

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31

Bergmann, Annabel Elisabeth [Verfasser], Christoph [Akademischer Betreuer] Knorr, Detlef [Gutachter] Rath, and Wolfgang [Gutachter] Holtz. "Sperm binding properties to uterine epithelial cells in vitro employing a primary porcine endometrium culture system / Annabel Elisabeth Bergmann. Betreuer: Christoph Knorr. Gutachter: Detlef Rath ; Wolfgang Holtz." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1102535877/34.

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32

Ross, Iona Catherine. "Investigation and development of cuprous delafossites for solid oxide fuel cell cathodes." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/16726.

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The research into materials for use as cathode materials for solid oxide fuel cells (SOFC) is ongoing, with many different avenues being investigated. Copper based delafossites were studied for cathode side applications in SOFCs, as a novel and comparatively cheap material. The aim was to identify suitable materials with appropriate electrical conductivity, thermal, chemical and mechanical stability in air. Furthermore, understanding the behaviour of the delafossites during the thermal oxidation to spinel and copper oxide would be beneficial to further development of the materials. The structu

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33

Stefan, Elena. "Development of spinel-based electrode supports for solid oxide fuel cells." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3605.

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The high temperature oxidation of ferritic stainless steel interconnects results in chromium poisoning of the solid oxide fuel cell (SOFC) electrodes, which is a limiting factor for their utilisation as SOFC interconnects. Chromium-rich spinel materials were studied as electrode supports that would be situated at the interface between interconnect and electrode, in order to reduce the effect of chromium poisoning of the electrodes. The main goal of this thesis was to find chromium-rich spinel materials with good electrical conductivity (σ ≥ 0.1 S∙cm⁻¹) in air and reducing atmosphere, chemicall

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34

Kosinski, Marcin Robert. "Nanomaterials for solid oxide fuel cell electrolytes and reforming catalysts." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2588.

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In this work, a broad range of analytical methods was applied to the study of the following three materials systems: yttria-stabilised zirconia (YSZ), samarium-doped ceria (SDC) and SDC-supported metal catalysts. YSZ and SDC were studied in the light of their application as solid electrolytes in Solid Oxide Fuel Cells. The SDC-supported metal catalysts were evaluated for application in the reforming of methanol. The conductive properties of YSZ pellets derived from powders of different Y contents and particle size ranges were investigated using Impedance Spectroscopy (IS). Comparative studies

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35

Lambert, Darcy Erin. "Nanostructured Extremely Thin Absorber (ETA) Hybrid Solar Cell Fabrication, Optimization, and Characterization." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/637.

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Traditional sources of electrical energy are finite and can produce significant pollution. Solar cells produce clean energy from incident sunlight, and will be an important part of our energy future. A new nanostructured extremely thin absorber solar cell with 0.98% power conversion efficiency and maximum external quantum efficiency of 61% at 650 nm has been fabricated and characterized. This solar cell is composed of a fluorine-doped tin oxide base layer, n-type aluminum doped zinc oxide nanowires, a cadmium selenide absorber layer, poly(3-hexylthiophene) as a p-type layer, and thermally evap

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36

Zhang, Yaoqing. "Exploring novel functionalities in oxide ion conductors with excess oxygen." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2576.

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Functional materials, particularly metal oxides, have been the focus of much attention in solid state chemistry for many years and impact every aspect of modern life. The approach adopted in this thesis to access desirable functionality for enhanced fundamental understanding is via modifying existing materials by deploying reducing synthetic procedures. This work spans several groups of inorganic crystalline materials, but is unified by the development of new properties within host compounds of particular relevance to solid oxide fuel cell technology, which allow interstitial oxide ion conduct

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37

O'Beirne, Greg A. "Mathematical modelling and electrophysiological monitoring of the regulation of cochlear amplification." University of Western Australia. School of Biomedical and Chemical Sciences, 2005. http://theses.library.uwa.edu.au/adt-WU2006.0115.

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[Truncated abstract] The cochlea presumably possesses a number of regulatory mechanisms to maintain cochlear sensitivity in the face of disturbances to its function. Evidence for such mechanisms can be found in the time-course of the recovery of CAP thresholds during experimental manipulations, and in observations of slow oscillations in cochlear micromechanics following exposure to low-frequency tones (the “bounce phenomenon”) and other perturbations. To increase our understanding of these oscillatory processes within the cochlea, and OHCs in particular, investigations into cochlear regulatio

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38

Chu, Yen-Chang, and 褚晏彰. "Stiffness of Substrate Affects Corneal Epithelial Cells Migration in Electric Fields." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/57122345459068739762.

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碩士<br>國立臺灣大學<br>醫學工程學研究所<br>98<br>Cell migration involves in many fields, such as wound healing, tumor metastasis, organ development, immune response and morphological change. Cell migration is affected by many factors, such as electric field, rigidity of the substrate, and chemical gradient. Amniotic membrane (AM) is commonly used to treat persistent corneal injuries. In an attempt to understand mechanisms behind this enhancement of the healing process, bovine corneal epithelial cells were used to examine cell migration on the various substrates. External electric field was applied to simulat

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39

Ye, Jia Kai, and 葉家凱. "Study of electric and magnetic properties on magnetic tunnel junction cells." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/70138415554873060461.

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碩士<br>國立彰化師範大學<br>物理學系<br>94<br>A new breed of magnetic random access memory (MRAM) based on a magnetic tunnel junction (MTJ) storage element has emerged as a promising candidate for nonvolatile memory application. The objective of this thesis is mainly to investigate the electric and magnetic properties of magnetic tunnel junction cells. Firstly, we get to know the magnetic property changes of multilayer under different temperatures. Though top-down processes, including electron beam lithography, photolithography, ECR ion-milling, reactive ion etching, sputtering and thermal evaporation, micr

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Kuang-TengHung and 洪廣騰. "Studies of Synthesis and Opto-Electric Properties of Organic Solar Cells." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/17328066600720076568.

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41

"Human umbilical cord lining epithelial cells with stem cell-like properties: an adjunct to skin regeneration." 2013. http://library.cuhk.edu.hk/record=b5549751.

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皮膚是人體最大的器官，具有多種功能，其中最重要的功能之一就是作為身體內部和外界環境之間的的保護屏障。完整地修復這一保護屏障是創傷癒合和組織再生領域的一個重要內容。本論文探討了人類臍帶被覆上皮細胞 (cord lining epithelial cells, CLECs)作為一種幹細胞來源，可用于表皮重建的潛能.<br>本論文的第二章對CLECs的體外分離和增殖進行了詳細地描述。這一類細胞具有較長的染色體端粒，較高的增殖潛能和傳代能力。同時，它們表達上皮幹細胞和多能性幹細胞的標誌性表面抗原。它們還具有多種分化潛能，包括成脂、成骨和成軟骨。然而當皮下異種移植後，它們並不會形成畸胎瘤。<br>本論文的第三章對CLECs的免疫特性進行了評估。結果顯示CLECs不但具有低免疫原性，還具有免疫調節功能。它們表達典型性的一型主要組織相容性複合體(MHC class I)，即人白細胞ABC抗原(HLA-ABC)，但不表達典型性的二型主要組織相容性複合體(MHC class II)，即人白細胞DR抗原(HLA-DR)。它們同時還表達非典型性的MHC class I, 包括人白細胞G抗原和人白細胞E 抗原(HLA-G和HLA-E), 但不表達共激分子(CD40, CD80和CD86)。此外，體外檢測還發現它們表達適度的促炎/抗炎細胞因子和大量的生長因子.<br>本論文的第四章對CLECs在表皮重建應用

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42

Pedrigi, Ryan M. "Biomechanics of the Lens Capsule from Native to After Cataract Surgery." 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2008-08-40.

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The primary function of the lens capsule of the eye unfolds during the process of accommodation; wherein, tension imposed onto its equator is released, allowing the elastic capsule to mold the underlying lens nucleus and cortex into a more quasispherical morphology to change focus from distant to near objects. Given its highly mechanical nature, it is prudent to study the native lens capsule from the perspective of biomechanics for such applications as understanding the mechanism of accommodation. Further, cataract surgery introduces alterations to the geometry of the lens capsule that lead to

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43

Bergmann, Annabel Elisabeth. "Sperm binding properties to uterine epithelial cells in vitro employing a primary porcine endometrium culture system." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-875C-6.

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In der Schweinezucht werden konventionell 1-3 x109 Spermien als Frischsamen in einem Volumen von 80-100 ml intrauterin versamt. Im Vergleich zur Rinderbesamung, bei der mitunter 2 x106 Spermien zu Trächtigkeiten führen, sind Ejakulate von Ebern ineffizient. Die einzige Möglichkeit geringe Spermienzahlen erfolgreich zu versamen besteht darin die Spermienablage nahe dem Ort der Befruchtung im distalen Isthmus des Eileiters durchzuführen. Die spezies-spezifische Bindung von Säugerspermien an diverse Oberflächenzellen des weiblichen Traktes, die der Kapazitation und Hyperaktivierung vorangehen, se

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44

Lu, Shao-Ming, and 呂紹銘. "The study on electro-optical properties of cholesteric liquid crystal cells driven by in-plane electric fields." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/5h635b.

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碩士<br>國立臺北科技大學<br>光電工程系研究所<br>105<br>In this study, the electro-optical properties of a bistable cholesteric liquid crystal composed of chiral dopant and nematic liquid crystal with negative dielectric anisotropy is investigated. The cholesteric liquid crystal has periodic helical structure that results in Bragg reflection. We drive the cholesteric liquid crystal using in-plane finger electrodes. The cell can operated from the planar state to lying-helix configuration by in-plane electric field switching at low voltage. At large voltage, the cell does not have helical structure. Different widt

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45

Jamil, M. Mahadi Abdul, M. A. M. Zaltum, N. A. A. Rahman, et al. "Investigation of Pulse electric field effect on HeLa cells alignment properties on extracellular matrix protein patterned surface." 2018. http://hdl.handle.net/10454/16996.

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Yes<br>Cell behavior in terms of adhesion, orientation and guidance, on extracellular matrix (ECM) molecules including collagen, fibronectin and laminin can be examined using micro contact printing (MCP). These cell adhesion proteins can direct cellular adhesion, migration, differentiation and network formation in-vitro. This study investigates the effect of microcontact printed ECM protein, namely fibronectin, on alignment and morphology of HeLa cells cultured in-vitro. Fibronectin was stamped on plain glass cover slips to create patterns of 25μm, 50μm and 100μm width. However, HeLa cel

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van, Heerden Johannes Lodewikus. "Material properties of ZnO thin films prepared by spray pyrolysis." Thesis, 2012. http://hdl.handle.net/10210/6033.

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Ph.D.<br>In the search to improve the conversion efficiency of solar cells such as α-Si and CuInSe2 cells, attention have recently been focused on the use of transparent conducting oxides (TCO's) as window layers and top electrodes in these cells. Materials such as indium tin oxide (ITO) and fluorine-doped tin oxide (FTO) thin films were used due to their excellent electro-optical properties, but it was found that they were unstable when subjected to a hydrogen plasma (during the a-Si deposition) and that the materials reduced to their metallic forms, degrading their electrical and optical pro

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Lin, Yu-Ting, and 林鈺庭. "Study on Electro-optical Properties of Cholesteric Liquid Crystal Cells Driven by In-plane and Vertical Electric Fields." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/dpad3p.

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碩士<br>國立臺北科技大學<br>光電工程系研究所<br>102<br>In this thesis, the electro-optical properties of a cholesteric liquid crystal cell, composed of chiral dopant and nematic liquid crystal with negative dielectric anisotropy, are investigated. The chiral dopant gives rise to a helical structure of the nematic LC. The cell has Bragg reflection as a result of the helical pitch of the liquid crystals molecules. We drive the chiral nematic liquid crystal cell using three-terminal electrodes. Bragg reflection and threshold voltage of the cell are significantly related with the chiral dopant concentration. Wavele

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"Phosphorous diffusion and hydrogen passivation of polycrystalline silicon for photovoltaic cells." Thesis, 2012. http://hdl.handle.net/10210/5415.

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M.Sc.<br>Techniques for the fabrication of polycrystalline silicon solar cells have advanced in recent years with efficiencies exceeding 17%. The major advantage of polycrystalline silicon is its low cost relative to single-crystalline silicon. The disadvantage is the significantly smaller minoritycarrier bulk diffusion length and inhomogeneous nature of the material. These two drawbacks are due to the presence of grain boundaries as well as high concentrations of dislocations and other physical and chemical defects. In this study the experimental conditions were determined to fabricate solar

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Greer, Michael R. "A 6% efficient MIS particulate silicon solar cell." Thesis, 1998. http://hdl.handle.net/1957/34037.

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Van, der Merwe Johan Petrus. "Elektriese eienskappe van aluminium kontakte op polikristallyne silikon." Thesis, 2012. http://hdl.handle.net/10210/6737.

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M.Sc.<br>The efficiency of commercial polycrystalline silicon solar cells is currently 12% and 15% in the case of single crystalline cells. It is possible to lose about half of the open circuit voltage due to inferior contacts on the cell. It is thus clear that inferior contacts can seriously impede the relative low efficiency and care should be taken to make good ohmic contacts. Experiments were done to evaluate the influence of several factors on the quality and stability of the contacts. 1 C2•cm p-type polycrystalline silicon and 3 52.cm n-type single crystalline silicon were primarily used

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