Search for dissertations about: "polycrystalline diamond"

Showing result 1 - 5 of 13 swedish dissertations containing the words polycrystalline diamond.

2. 1. Microengineering of diamond

   Author : Henrik Björkman; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; materialvetenskap; Materials Science;

   Abstract : Performance of micromechanical systems often relies on extreme material properties. Being the strongest, stiffest and hardest of all materials, exhibiting extreme electromagnetic transparency and wear resistance, and offering the highest possible thermal conductivity and very low friction against most materials, diamond is indeed a unique material. READ MORE

4. 2. Environmental, Resource and Health Assessments of Hard Materials and Material Substitution: The Cases of Cemented Carbide and Polycrystalline Diamond

   Author : Anna Furberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Life cycle assessment; polycrystalline diamond; disability-adjusted life years; material flow analysis; machining tools; cemented carbide;

   Abstract : The conventional hard material used in manufacturing industry, cemented carbide (WC-Co), mainly consists of the geochemically scarce elements tungsten and cobalt. This use of scarce resources could potentially be avoided by a material substitution to the more abundant and largely carbon-based material polycrystalline diamond (PCD). READ MORE

5. 3. Electrical Characterization of Novel Insulators in Metal-Insulator-Semiconductor Structures

   Author : Anders Jauhiainen; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon dioxide; MOS; Fowler-Nordheim injection; charge transport; MIS; wafer bonding; polycrystalline diamond; capacitance;

   Abstract : This thesis comprises seven papers (A-G) and an extended introduction which puts them into context within a broader field of research. The papers deal with the electrical characterization of some different insulators and interfaces encountered within the realm of silicon based microelectronics. READ MORE

6. 4. Wafer Bonding - Problems and Possibilities

   Author : Mats Bergh; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SOI; atomic force microscope; micromechanics; compliant substrates; wafer bonding; semi-insulating silicon; AFM; surface chemistry; diamond; silicon on insulator; aluminium nitride; microelectronics; surface roughness;

   Abstract : The wafer bonding technology offers a unique opportunity to combine different materials. This has been used for the realisation of novel silicon on insulator (SOI) structures. By replacing the buried silicon dioxide layer with a polycrystalline diamond film the thermal properties of the SOI structure are improved. READ MORE

7. 5. Microstructure technology in silicon, quartz, and diamond

   Author : Pelle Rangsten; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Elektronik; Electronics;

   Abstract : Microstructure technology can be defined as a set of fabrication processes enabling three-dimensional structures featuring dimensions in the micrometer to millimetre range, with micrometer accuracy. Microstructures can be assembled or manufactured integrated with other structures and/or microelectronics forming complex microsystems. READ MORE