Sökning: "reflow"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet reflow.

  1. 1. Polymer Microoptics in Silicon Micromachining

    Författare :Karin Hedsten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MOEMS; amorphous fluorocarbon polymer; polymer microlens; silicon micromachining; replication; refractive lenses; diffractive optics; MEMS; Cytop™; transmissive microoptics; reflow;

    Sammanfattning : MEMS (micro-electro-mechanical system) technology is an established field, which makes use of the advanced state of silicon processing to fabricate complex electro-mechanical structures and devices. Microoptics is a new, but advanced technology within the field of optics. LÄS MER

  3. 2. Integration of diffractive, refractive and plasmonic optical structures in highly functional MEMS-based scanning and biosensing systems

    Författare :Karin Hedsten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; localized surface plasmon resonance; replication; vertical-cavity surface-emitting laser; protein binding; silicon micromachining; polymer micro¬lens; biosensing; MEMS; diffractive microoptics; MOEMS; reflow;

    Sammanfattning : .... LÄS MER

  4. 3. Technology and properties of InP-based photonic crystal structures and devices

    Författare :Naeem Shahid; Srinivasan Anand; Rob W. vad der Heijden; KTH; []
    Nyckelord :Integrated optics materials; Photonic crystals; Planar waveguides; Dispersion; Band-gap; Mode-gap; mini-stopband; InP; Nanostructure fabrication; dry etching; mass transport; material reflow; reliability; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Photonic crystals (PhCs) are periodic dielectric structures that exhibit a photonic band gap; a range of wavelengths for which light propagation is forbidden. 2D PhCs exhibit most of the properties as their three dimension counterparts with a compatibility with standard semiconductor processing techniques such as epitaxial growth, electron beam lithography, Plasma deposition/etching and electromechanical lapping/polishing. LÄS MER

  5. 4. Ramp Josephson junctions based on NdBa2Cu3O7-δ electrodes and PrBa2Cu3O7-δ barriers

    Författare :Mikael Sjöstrand; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PBCO; high temperature; superconducting device; ramp Josephson junction; NBCO; pulsed laser deposition; thin film;

    Sammanfattning : We report on smooth high quality c-axis orientedNdBa2Cu3O7-δ (NBCO) superconducting thin filmsgrown on (001) SrTiO3 substrates using pulsed laser deposition.The transition temperature of these NBCO films was around 89.5 Kand the root-mean-square (RMS) surface roughness was 0.75 nm for150 nm thick films. LÄS MER

  7. 5. Solder Matrix Fiber Composite Thermal Interface Materials

    Författare :Josef Hansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermal management; composite materials; solder; thermal interface material;

    Sammanfattning : Overheating has been a problem for microelectronics devices for decades, and the problem is exacerbated by the continued trend of miniaturization of features and the corresponding increase in power density. Thermal interface materials (TIMs) target one of the main bottlenecks in heat transfer: the interface between two materials, such as between a heat-generating microchip and a heatsink. LÄS MER