Search for dissertations about: "chevron notch"

Showing result 1 - 5 of 14 swedish dissertations containing the words chevron notch.

2. 1. Investigation of Some Heat Transfer Surfaces for Gas Turbine Recuperators

   Author : Esa Utriainen; Värmeöverföring; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; trapezoidal; corrugated undulated; cross wavy; cross corrugated; chevron; pressure drop; heat transfer; microturbine; Recuperator; gas turbine; plate-fin; Technological sciences; Teknik; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; Gases; fluid dynamics; plasmas; Gaser; fluiddynamik; plasma;

   Abstract : A part of this thesis has been devoted to present general recuperator technology such as available gas turbine recuperator types, applications where recuperators are utilized, recuperator materials etc. An investigation of some compact and highly efficient heat transfer surfaces, for intended use in gas turbine recuperators, include the following surfaces: · Cross Wavy (CW) primary surface. READ MORE

4. 2. Wafer Bonding for Spaceflight Applications : Processing and Characterisation

   Author : Kerstin Jonsson; Maaike Visser-Taklo; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; wafer bonding; oxygen plasma; wet chemical; anodic bonding; gamma irradiation; proton irradiation; temperature cycling; vibration; shock; Weibull; adhesion quantification; double cantilever beam; tensile; chevron; blister; Teknisk fysik; Engineering physics; Teknisk fysik;

   Abstract : Bonding techniques intended for assembling space microsystems are studied in this work. One of the largest problems in bonding pre-processed semiconductor wafers are the severe process restrictions imposed by material compatibility issues. READ MORE

5. 3. Design and fabrication of hidden hinge monocrystalline silicon micromirrors for maskless lithography

   Author : Martin Bring; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; isotropic etching; LOCOS; micromirror; maskless lithography; chevron notch; low temperature transfer bonding; fracture toughness;

   Abstract : Micromirror-based maskless lithography has recently received attention as an attractive candidate to tackle challenges associated with the continued de-vice scaling in the semiconductor industry. The micromirrors work by diffrac-tion and the requirements on planarity are very tough, e.g. peak-to-valley dif-ferences of a few nanometers. READ MORE

6. 4. Low temperature transfer bonding for MEMS. Utilizing and characterizing oxygen plasma assisted direct wafer bonding

   Author : Martin Bring; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transfer bonding; chevron notch; oxygen plasma assisted bonding; Low temperature bonding; fracture toughness;

   Abstract : Transfer bonding enables the integration of devices, e.g. integrated circuits (ICs) and transducers, fabricated using processes and/or designs that are not compatible with each other as well as double sided micromachining of thin films. READ MORE

7. 5. Folding of the Ribosomal protein S6 : The role of sequence connectivity, overlapping foldons, and parallel pathways

   Author : Ellinor Haglund; Mikael Oliveberg; Neil Ferguson; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; protein folding; protein stability; two-state folding; S6; chevron plot; transition state; parallell pathways; foldon; two-channel landscape; protein engineering; H D-exchange; Biochemistry; Biokemi; Biochemistry; biokemi;

   Abstract : To investigate how protein folding is affected by sequence connectivity five topological variants of the ribosomal protein S6 were constructed through circular permutation.  In these constructs, the chain connectivity (i.e. the order of secondary-structure elements) is changed without changing the native-state topology. READ MORE