Search for dissertations about: "nano-structures"

Showing result 1 - 5 of 28 swedish dissertations containing the word nano-structures.

2. 1. Transmission of slow highly charged ions through nano-structures

   Author : Nadeem Akram; Reinhold Schuch; Friedrich Aumayr; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Highly charged ions; nano-structures; nanocapillaries; ion-guiding; fysik; Physics;

   Abstract : This thesis is based on experimental investigations of transmitting slow highly charged ions through nano-structures of various cross-sections. Transmission through rhombic and rectangular nanocapillaries in muscovite and phlogopite mica, respectively, is used to study the guiding and shaping of highly charged ion beams. READ MORE

4. 2. Growth and Characterization of AlN : From Nano Structures to Bulk Material

   Author : Gholamreza Yazdi; Rositza Yakimova; Mikael Syväjärvi; Zlatko Sitar; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Abstract : Aluminum nitride (AlN) exhibits a large direct band gap, 6.2 eV, and is thus suitable forsolid state white-light-emitting devices. It is capable in spintronics because of its high Curietemperature if doped with transition metals. READ MORE

5. 3. Electrical Characterization of Integrated InAs Nano-Structures

   Author : Gvidas Astromskas; Fasta tillståndets fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; DLTS; Fermi level pinning; epitaxial growth; threshold voltage; nanowire capacitance; overgrowth; Hall mobility; GaSb; InAs;

   Abstract : This thesis analyzes the electrical properties of InAs nano-structures, that are integrated into different materials and geometries. The thesis describes integration related issues of InAs, the epitaxial synthesis of the InAs nano-structures and summarizes experimental techniques for analysis of electrical properties of the integrated structures. READ MORE

6. 4. On nano size structures for enhanced bone formation

   Author : Luiz Meirelles; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; nano structures; nanotopography; surface modification; osseointegration; bone tissue; titanium implants;

   Abstract : Purpose The general aim of the present thesis was to investigate early bone response to titanium implants modified with nano size structures. Therefore, 1. a model to evaluate titanium implants modified with nano size structures was validated; 2. a suitable detection method of nano size structures was implemented. READ MORE

7. 5. High dynamic stiffness nano-structured composites for vibration control : A Study of applications in joint interfaces and machining systems

   Author : Qilin Fu; Cornel-Mihai Nicolescu; Per Nylén; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vibration control; High dynamic stiffness; Metal matrix composite; Nano structures; Plasma enhanced chemical vapour deposition PECVD ; High power impulse magnetron sputtering HiPIMS ; Adiabatic; Machining; Regenerative tool chatter; Production Engineering; Industriell produktion;

   Abstract : Vibration control requires high dynamic stiffness in mechanical structures for a reliable performance under extreme conditions. Dynamic stiffness composes the parameters of stiffness (K) and damping (η) that are usually in a trade-off relationship. This thesis study aims to break the trade-off relationship. READ MORE