Io chun hoi thesis proposal

Quantum optics with propagating microwaves in superconducting circuits by Io-Chun Hoi ( Book )
1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Approaching the depairing critical current in superconducting YBa₂Cu₃O–x nanowires by Shahid Nawaz ( Book )
1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Charge transport in InAs nanowire devices by Simon Abay Gebrehiwot ( Book )
1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Functional fiber based materials for microsystem applications by Carl Zandén ( Book )
1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide
This thesis explores the integration of functional electrospun micro- and nanofiber based materials in two fields of microsystem technology: fibrous scaffolds as cell culture substrates and fiber-reinforced metal matrix composites as thermal interface materials (TIMs). Electrospun structures have been found to carry great potential as biomimicking microenvironments for future tissue engineering and cell culture applications. In the first part of this thesis, electrospun polyurethane fiber architectures have been fabricated, characterized and studied as cell culture scaffolds. The effects of plasma treatment, as a physical surface modification of the electrospun scaffold interface, are characterized and demonstrated to improve the possibility for human embryonic stem cell culture expansion. Electrospun scaffolds with specific fiber diameters are shown to allow maintenance of astrocytes with complex morphologies, limit up-regulation of protein expression related to astrocyte stress and activation, and to facilitate the formation of three-dimensional neuronal networks.

Taken together, these findings indicate that electrospun scaffolds can be used to complement or improve traditional in vitro culture methods. To enable detailed studies of the interplay between physical and chemical cues for cells in controlled microenvironments, a method to integrate electrospun structures with microfluidic systems was devised. Thermal interface materials have been identified by the semiconductor industry as one of the major bottlenecks in the heat dissipation for high power density devices. The second part of this thesis presents the development of a novel metal matrix composite TIM technology utilizing fiber reinforcements formed through electrospinning. Employed as a TIM, the composite structure relies on heat conduction through its continuous metal phase, while the fiber network modifies the thermo-mechanical properties. Three specific implementations have been developed: Polyimide fibers with an indium matrix and a tin-silver-copper (SnAgCu) alloy matrix, and carbonized mesophase-pitch based fibers with a SnAgCu alloy matrix. To facilitate liquid phase infiltration of the indium matrix into the polyimide fibers, a chemical reduction based method for coating Ag nanoparticles on the fiber surface was developed. Using the same Ag coating, the SnAgCu composite was fabricated and demonstrated to exhibit a reduced elastic modulus, which indicates the potential to lower the thermally induced stress when bonding materials with thermal expansion mismatch.

The expected increase in thermal conductivity when switching from polymer to carbonized fibers is found to be limited, and improved methods to reduce the thermal contact resistance at the matrix-fiber interface are needed. Measurements of low thermal contact resistances (1 Kmm2/W) and high thermal conductivities (

20 W/mK) show that the composite architectures are promising candidates for future applications when compared to both existing and other emerging TIM technologies

Technical report MC2 ( )
in English and held by 2 WorldCat member libraries worldwide

Magnetotransport characterization of epitaxial graphene on SiC by Samuel Alejandro Lara Avila ( Book )
1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Nonlinear characterisation and modelling of microwave semiconductor devices by Mattias Thorsell ( Book )
1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

Fractal superconducting resonators for the interrogation of two-level systems by Sebastian de Graaf ( Book )
1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

Fiber-optic systems with coherent detection and four-dimensional modulation by Martin Sjödin ( Book )
1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Studies of acoustic waves, noise and charge pumping using single-electron devices by Martin Gustafsson ( Book )
1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Annual report by Chalmers tekniska högskola ( Book )
2 editions published in 2005 in English and held by 2 WorldCat member libraries worldwide

Theory of van der Waals bonding. from bulk materials to biomolecules by Elisa Londero ( Book )
1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

RF and noise optimization of pseudomorphic InP HEMT technology by Mikael Malmkvist ( Book )
1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

Proceedings of the 16th International Symposium on Space Terahertz Technology by International Symposium on Space Terahertz Technology ( )
1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

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