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Dissertations / Theses on the topic 'Nanoengineering'

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1

Jolley, Kenny. "Multiscale methods for nanoengineering." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/7809.

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This thesis is presented in two sections. Two different multiscale models are developed in order to increase the computational speed of two well known atomistic algorithms, Molecular Dynamics (MD) and Kinetic Monte Carlo (KMC). In Section I, the MD method is introduced. Following this, a multiscale method of linking an MD simulation of heat conduction to a finite element (FE) simulation is presented. The method is simple to implement into a conventional MD code and is independent of the atomistic model employed. This bridge between the FE and MD simulations works by ensuring that energy is con
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2

Konijn, Mark. "Multilevel Nanoengineering for Imprint Lithography." Thesis, University of Canterbury. Electrical and Computer Engineering, 2005. http://hdl.handle.net/10092/1071.

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The current trend in pushing photo lithography to smaller and smaller resolutions is becoming increasingly difficult and expensive. Extreme ultra-violet lithography is an alternate method that has the potential to provide feature sizes down to 30 nm, however, it will come at an even greater cost. Nanoimprint lithography (NIL) is another lithographic technique which is promising to provide very high resolutions at a relatively low cost. Imprinting works by using a mold with a surface patterned with the required nano structures and pressing it into a substrate coated with a deformable polymer. D
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3

Gugutkov, Dencho. "Nanoengineering approaches for guiding cellular behavior." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/456075.

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Tissue engineering aims to replace restore or help regeneration of injured tissue or organ with scaffolds that mimic the natural extracellular matrix (ECM). The design of such scaffolds requires deeper understanding of the factors that determine the cellular behavior. This thesis is focused on the cell-biomaterials interaction, but it strives to go beyond the classical material science, looking for new options to obtain control over the cell behavior. Cellular interaction with artificial substrata is a well-described paradigm usually attributed to the adsorption of adhesive proteins from the s
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4

Lupton, John Mark. "Nanoengineering of organic light-emitting diodes." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/1597/.

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5

Sharma, Preetam Kumar. "Nanoengineering of metal oxides for photocatalytic applications." Thesis, Ulster University, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728645.

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Heterogeneous photocatalysis is the acceleration of a photoreaction in the presence of a semiconductor, whereby, the semiconductor absorbs the photon energy to create charge carriers which may take part in redox reactions at the surface of the semiconductor. Photocatalysis has been investigated for the conversion of solar energy to fuels i.e. water splitting for hydrogen and carbon dioxide feduction to solar fuels. Also, photocatalysis has been widely investigated for the remediation of polluted air and water. The major challenge for solar photocatalysis is the requirement for the semiconducto
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6

Zamani, Reza. "Structure nanoengineering of functional nanomaterials. Advanced electron microscopy study." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/145318.

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In this report novel materials for advanced applications are studied by means of the latest microscopy technologies and methodologies which have had a dramatic impact on progress of materials science. The aim was to study phenomena such as polytypism, unusual morphologies, polytypic branching, cation ordering, polarity, epitaxial growth and interface, etc, in order to find adequate explanations for the influence of the phenomena on the properties and applications such as thermoelectricity, p-n junction functionality, photovoltaic efficiency, optoelectronic properties, and sensing response. Var
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7

Osborne, Daniel Josiah. "A Nanoengineering Approach to Oxide Thermoelectrics For Energy Harvesting Applications." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36133.

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The ability of uniquely functional thermoelectric materials to convert waste heat directly into electricity is critical considering the global energy economy. Profitable, energy-efficient thermoelectrics possess thermoelectric figures of merit ZT â ¥ 1. We examined the effect of metal nanoparticle â oxide film interfaces on the thermal conductivity κ and Seebeck coefficient α in bilayer and multilayer thin film oxide thermoelectrics in an effort to improve the dimensionless figure of merit ZT. Since a thermoelectricâ s figure of merit ZT is inversely proportional to κ and directly pr
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8

Genç, Aziz. "Plasmonic nanoengineering in hollow metal nanostructures: an electron energy-loss spectroscopy study." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/305101.

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Resumen en Español Las nanoestructuras metálicas están siendo objeto de gran atención dada su capacidad para generar resonancias plasmónicas, que son oscilaciones colectivas de electrones alojados en la banda de conducción en un metal excitado por efecto de un campo electromagnético. El creciente interés entorno a las nanoestructuras metálicas como fuentes de plasmones, ha resultado en el desarrollo de un nuevo campo, la plasmónica, definida como la ciencia y tecnología de la generación, control y manipulación de las excitaciones resultantes de las interaciones de la luz con la materia. La
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9

Yang, Guohua. "Molecular-level investigations of model membrane systems : a scanning tunneling microscopy and nanoengineering approach /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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10

Tudisco, Cristina. "Chemical Engineering of Silicon for Supramolecular Recognition." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/938.

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This thesis discusses some strategies to anchor functional molecules on silicon-based substrates in order to introduce onto a solid surface specific functionalities. Two main typologies of silicon-based substrates both of technological interest have been functionalized through synthetic routes based on the hydrosilylation reaction. First typology consists of flat monocrystalline Si(100) which is the surface of election for the development of commercial microelectronic devices, while second substrate typology consists of porous silicon which represents an interesting candidate for novel devices
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11

Yazdi, Amirali. "Nanoengineering composites made of metal- and covalent- organic frameworks and inorganic nanoparticles using encapsulation techniques." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666772.

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La presente tesis doctoral se ha enfocado en el diseño y la síntesis de un nuevo tipo de materiales compuestos basados en metal-organic frameworks (MOFs) o covalent-organic frameworks (COFs) y nanopartículas inorgánicas y el uso de estos materiales compuestos para la catálisis heterogénea. En el primer capítulo se introduce la familia de materiales compuestos dispersos en/sobre diferentes materiales haciendo especial énfasis en aquellos construidos con MOFs y COFs. En el capítulo 2 se presentan los objetivos generales de la tesis doctoral. En el capítulo 3 se muestran los resultados del artí
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12

Liu, Maozi. "The production and characterization of nanostructures of single-stranded DNA and proteins using a nanoengineering approach /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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13

Bignoli, Francesco. "Tailoring mechanical behavior of metallic thin films through nanoengineering design strategies : investigation of metallic glass and high entropy alloy films." Electronic Thesis or Diss., Paris 13, 2024. http://www.theses.fr/2024PA131031.

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Les couches minces métalliques sont devenues l'objet de recherches intensives ces dernières années en raison de l'activation des effets de taille mécanique améliorant la résistance et la plasticité.Cependant, l'étude de la connexion entre la structure locale et le comportement mécanique d'un film mince n'est pas pleinement comprise et la recherche de nouvelles nanostructures capables d'améliorer leurs propriétés mécaniques est encore un sujet ouvert.Dans ce projet de doctorat, nous exploitons le potentiel du dépôt laser pulsé (PLD) pour synthétiser de nouveaux verres métalliques (TFMG) et des
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14

Torres, Alonso Elías. "Scalable processing and integration of 2D materials and devices." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33456.

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Due to its truly two dimensional (2D) character and its particular lattice, single layer graphene (SLG) possesses exceptional properties: it is semimetallic, transparent, strong yet flexible ... Complementary features such as the insulating character of hexagonal boron nitride (h-BN) and semiconducting properties of transition metal dichalcogenides (TMDs) enable the whole spectrum of electronic devices to be built with combinations of these 2D materials. Due to this and the ease of exfoliation with a sticky tape, a vast amount of research was sparked. The mechanical exfoliation method, however
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15

Miller, Carl A. "Control of Dynamic DNA Origami Mechanisms Using Integrated Functional Components." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429812012.

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16

Marras, Alexander Edison. "DNA Origami Mechanisms and Machines." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366227349.

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17

Li, Shanghua. "Engineering nanomaterials with enhanced functionality." Licentiate thesis, KTH, Materials Science and Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3906.

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<p>This thesis deals with the engineering of novel nanomaterials, particularly nanocomposites and nanostructured surfaces with enhanced functionalities. The study includes two parts; in the first part, an in situ sol-gel polymerization approach is used for the synthesis of polymer-inorganic hybrid material and its exceptional transparent UV-shielding effect has been investigated. In the second part, electrodeposition process has been adapted to engineer surfaces and the boiling performance of the fabricated nanostructured surfaces is evaluated.</p><p>In the first part of the work, polymer-inor
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18

Haeni, Jeffrey H. "Nanoengineering of Ruddlesden-Popper phases using molecular beam epitaxy." 2002. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-181/index.html.

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19

Tsai, Chen-Fong. "Enhanced Flux-Pinning Properties in Superconducting YBa2Cu3O7-δ Thin Films with Nanoengineering Methods". Thesis, 2013. http://hdl.handle.net/1969.1/149478.

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Since the discovery of the high temperature superconductor YBa2Cu3O7-δ (YBCO), with transition temperature (Tc = 77 K), above liquid nitrogen point in 1987 many research projects have been dedicated to enhancing the high field performance of this material for practical applications. The 2nd generation YBCO-based coated conductors are believed to be the most promising approach for commercial applications including power transmission, motors, generators, and high field magnets. With the advances of nanotechnologies, different nanoengineering methods have been demonstrated to enhance the performa
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20

AlYami, Noktan Mohammed. "Nanoengineering of Ruthenium and Platinum-based Nanocatalysts by Continuous-Flow Chemistry for Renewable Energy Applications." Diss., 2017. http://hdl.handle.net/10754/623659.

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This thesis presents an integrated study of nanocatalysts for heterogenous catalytic and electrochemical processes using pure ruthenium (Ru) with mixed-phase and platinum-based nanomaterials synthesized by continuous-flow chemistry. There are three major challenges to the application of nanomaterials in heterogenous catalytic reactions and electrocatalytic processes in acidic solution. These challenges are the following: (i) controlling the size, shape and crystallography of nanoparticles to give the best catalytic properties, (ii) scaling these nanoparticles up to a commercial quantity (kg pe
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21

Gabriel, Bárbara Filipa Casqueira Coelho. "Support tool for the application of nanoengineering on the development of eco-efficient manufacturing processes." Doctoral thesis, 2017. http://hdl.handle.net/10773/29111.

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The aim of this work is to present the NanoTechnology Usability (NTU) index tool, created and developed in order to reduce the gap between nanotechnologybased products developed in R & D centers and their effective application and utilization, promoting the optimized selection of materials and the use of ecoefficient production techniques. In this sense, the doctoral work contextualizes the current market of the types of commercially available nanomaterials, the most used synthesis methods, their current and potential market applications, current standards, obstacles and uncertainties with r
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22

Chen, Jhih-Yu, and 陳志宇. "Study of mode-locked Thulium-doped nanoengineering Yttrium-Alumina Silica fiber laser using semiconductor saturable absorber mirrors." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/gdbzq6.

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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>Because of the eye-safe properties and strong water absorption, 2 m mode-locked fiber laser sources are of big interest in applications of medicine, environmental sensing and materials processing. In this paper,we report on the investigation of mode-locked fiber lasers utilizing a Tm3+-doped nano-engineered yttrium–alumina(YA) silica glass fiber and semiconductor saturable absorber mirrors(SESAMs). The gain fiber, produced by Dr. M. C. Paul’s group in India, presents several benefits, especially the high efficiency and low loss. The pump source is a 1567-n
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23

Fozdar, David Yash. "Nanoengineering of surfaces to modulate cell behavior : nanofabrication and the influence of nanopatterned features on the behavior of neurons and preadipocytes." 2009. http://hdl.handle.net/2152/6881.

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Promising strategies for treating diseases and conditions like cancer, tissue necrosis from injury, congenital abnormalities, etc., involve replacing pathologic tissue with healthy tissue. Strategies devoted to the development of tissue to restore, maintain, or improve function is called tissue engineering. Engineering tissue requires three components, cells that can proliferate to form tissue, a microenvironment that nourishes the cells, and a tissue scaffold that provides mechanical stability, controls tissue architecture, and aids in mimicking the cell’s natural extracellular matrix (ECM).
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