Sökning: "low modulus"

Visar resultat 21 - 25 av 183 avhandlingar innehållade orden low modulus.

  1. 21. Nanomechanical Studies and Applications of Cantilever Sensors

    Författare :Sara Ghatnekar-Nilsson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; resonating; mass sensor; Young s modulus; CMOS; cantilevers; electron beam lithography; liquid;

    Sammanfattning : Different aspects of cantilevers to be used as sensors have been studied. Silicon cantilevers have been fabricated and integrated on CMOS chips using low-energy electron beam lithography in order to reduce the irradiation damage to the circuits. The released and integrated cantilevers have been tested and used as mass sensors in air. LÄS MER

  3. 22. Mechanical properties of carbon nanotubes and nanofibers

    Författare :Henrik Jackman; Krister Svensson; Pavel Krakhmalev; Håkan Olin; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; atomic force microscopy; bending; carbon nanotubes; deformation; scanning electron microscopy; Young s modulus; carbon nanofibers; mechanical properties; Physics; Fysik;

    Sammanfattning : Carbon nanotubes (CNTs) have extraordinary electrical and mechanical properties, and many potential applications have been proposed, ranging from nanoscale devices to reinforcement of macroscopic structures. However, due to their small sizes, characterization of their mechanical properties and deformation behaviours are major challenges. LÄS MER

  4. 23. Fabrication and Characterization of Zinc Oxide Nanostructures for Piezoelectric, Mechanical and Electrical Applications

    Författare :Muhammad Yousuf Soomro; Magnus Willander; Omer Nur; Christian Falconi; Linköpings universitet; []
    Nyckelord :Nanotechnology; Zinc oxide; nanowires nanorods nanotubes; piezoelectric effect; nanogenerator; flexible substrate; p-type polymers; elastic modulus; LEDs; electrical characteristics;

    Sammanfattning : Nanotechnology, the science of manipulating materials on an atomic or molecular scale is one of the fastest growing areas of research and technology. Nanotechnology has a vast range of applications in medicine, electronics, biomaterials and energy production. New developments in nanotechnology are growing all the time. LÄS MER

  5. 24. Dynamic properties of two pedestrian timber bridges : Experimental and numerical analysis at several stages of construction

    Författare :Jens Bergenudd; Jean-Marc Battini; Roberto Crocetti; Patricia Hamm; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dynamic analysis; Modal analysis; Pedestrian bridge; Timber; Railings; Asphalt; Slip modulus; Finite element modelling; Dynamisk analys; Modal analys; Gång- och cykelbro; Trä; Räcken; Asfalt; Förskjutningsmodul; Finita element modellering.; Bro- och stålbyggnad; Structural Engineering and Bridges;

    Sammanfattning : Pedestrian bridges can beneficially be made from timber in order for our society to reach a sustainable future. This positive development is partly made possible due to advances in engineered wood products (e.g. glued laminated timber) and the possibilities for pre-fabrication of structural parts. LÄS MER

  7. 25. Mechanical behaviour of a roller bearing steel : Strength differential effect, low temperature creep and propagation of short cracks

    Författare :Irene Linares Arregui; Bo Alfredsson; Nils-Gunnar Ohlson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Fatigue cracks in bearings either initiate from the surface or from an inclusion below the rolling contact surface. Then, short cracks start to propagate. Short crack grow at considerably faster rates than long cracks subjected to a nominally equivalent stress intensity factor range. LÄS MER