Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Focussed Ion Beam"”.
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Josephson Junctions Fabricated by Focussed Ion Beam
… on an innovative new approach to Josephson junction fabrication. These junctions are created in low TC superconductor-normal metal bilayer tracks on a deep submicron scale using a Focused Ion Beam Microscope (FIB). The FIB is used to mill away a trench 50_nm wide in the upper layer of niobium …
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Nanofabrication using focused ion beam
Focused ion beam (FIB) technique uses a focused beam of ions to scan the surface of a specimen, analogous to the way scanning electron microscope (SEM) utilizes electrons. Recent developments in the FIB technology have led to beam spot size below 10 nm, which makes FIB suitable for nanofabrication. …
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Porosity in Nitride Semiconductors
This thesis presents an exploration of how electrochemical etching (ECE) can be used to create pores in nitride semiconductors in order to engineer their properties. ECE offers a simple, flexible approach to pore formation, driven by an electric field between the material surface and a suitable …
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Fabrication, simulation et caractérisation des propriétés de transport de composants à effet de champ latéral sur substrat de soi (Silicon-on-insulator)
À la base de l’évolution de la technologie microélectronique actuelle, la réduction des dimensions critiques des MOSFET standards pour améliorer leurs performances électriques a atteint depuis quelques années ses limites physiques. L’utilisation de nanocomposants innovateurs ayant une configuration …
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Ultrafast Machining of High Temperature Superconducting Nanostructures for Novel Mesoscale Physics
… the use of superconductors in industrial applications affordable. When focussing on electrical applications such as antennas and sensors, patterning of the superconducting thin films is a necessity. Among the different patterning techniques, including lithography, mechanical scribing, and focussed …
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Linking Architecture and Function of Endoplasmic Reticulum - Plasma Membrane Contact Sites
… sites (MCS) and thereby promote cellular functions such as lipid metabolism, signalling and organelle biogenesis. The formation of cortical endoplasmic reticulum (cER) - plasma membrane (PM) contacts in budding yeast cells is mediated by a set of six conserved proteins. By combining correlative …
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Molecular Architecture of the ER-Mitochondria Encounter Structure
… implicated in the process of mitochondrial fission. ERMES organises as diffraction limited foci between the ER and mitochondria; however, the molecular architecture of ERMES components within these foci is unknown. Using integrative approaches including correlative light and electron microscopy …
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Multi-Microscopy Characterisation of III-Nitride Devices and Materials
… research and are promising for various applications. In order to improve design efficient devices and improve current ones, the relationship between the structure of the constituent materials and their optical properties must be studied. The optical properties of materials are often examined by …
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Nanostrukturierte Metallelektroden zur funktionalen Kopplung an neuronale Zellen
The focus of this dissertation was to develop and investigate nanostructured gold interfaces for signal recordings from electroactive cells. Currently, the use of planar microelectrode arrays (MEAs) is an established technique for such extracellular recordings. However, a high impedance and a low …
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Magnetische Anisotropie und Spintransport in magnetoelektronischen Schichtsystemen und Nanostrukturen
The increasing use of information technology has lead to the development of numerous new concepts and processes in the production of electronic devices and magnetic data storage systems. The preparation and lithographic patterning of thin films plays a central role in this context. This work was …