Sökning: "enhanced strain"

Visar resultat 1 - 5 av 149 avhandlingar innehållade orden enhanced strain.

  1. 1. Resonant cavity enhanced heterojunction phototransistors

    Författare :Ola Sjölund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; parallel optical processing; resonant cavity; passivation; strain; uniformity; heterojunction phototransistor;

    Sammanfattning : .... LÄS MER

  3. 2. Growth and Characterization of Strain-engineered Si/SiGe Heterostructures Prepared by Molecular Beam Epitaxy

    Författare :Ming Zhao; Wei-Xin Ni; Göran Hansson; Kang L. Wang; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Si SiGe; Strain engineering; Molecular beam epitaxy; THz; Quantum cascade; Strain relaxation; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The strain introduced by lattice mismatch is a built-in characteristic in Si/SiGe heterostructures, which has significant influences on various material properties. Proper design and precise control of strain within Si/SiGe heterostructures, i.e. LÄS MER

  4. 3. Strain rate dependent material model for polymer composites

    Författare :Vivekendra Singh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; strain rate; finite element; viscoelasticity; viscoplasticity; continuum damage; unidirectional composites;

    Sammanfattning : We propose a micromechanical model that is able to predict the nonlinear behaviour and failure of unidirectional fibre reinforced polymer composites subjected to dynamic loading conditions. This novel material model is heterogeneous on the micro level and homogeneous on the ply level. LÄS MER

  5. 4. Implementation and Application of Fracture Mechanics Models for Concrete Structures

    Författare :Magnus Åkesson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bond slip; concrete cracking; abstract data types; prestressing; enhanced strain;

    Sammanfattning : Two numerical models for simulation of concrete cracking and bond slip have been implemented and applied in various comparative analyses. Both models were implemented in the commercial finite element system ABAQUS. LÄS MER

  7. 5. Impairment of Endothelial Thromboprotective Function by Haemodynamic and Inflammatory Stress - Implications for hypertensive disease

    Författare :Erik Ulfhammer; Göteborgs universitet; []
    Nyckelord :tissue-type plasminogen activator; endothelium; fibrinolysis; hypertension; shear stress; strain; antihypertensive agents; inflammation; TNF-alpha; NF-kappaB; MAPK;

    Sammanfattning : The physiologically most important activator of intravascular fibrinolysis is tissue-type plasminogen activator (t-PA). The endothelium synthesizes and stores t-PA and regulated release of the enzyme is an important local protective response to prevent thrombus extension. LÄS MER