Sökning: "Yee"

Hittade 5 avhandlingar innehållade ordet Yee.

  1. 1. Stimuli-responsive lipid bilayer mimics for protein, virus and cell recognition

    Författare :Sing Yee Yeung; Malmö universitet; []
    Nyckelord :Lipid bilayers; Adaptable; Self-assembled; Monolayers; Supramolecular chemistry; Cell adhesion; Biocensor;

    Sammanfattning : The most well-studied two-dimensional biomimetic cellular membrane modelsare self-assembled monolayers (SAMs) and supported lipid bilayers (SLBs).The former has the advantage of control over ligand density, homogeneity andorientation, allowing unambiguous interaction studies. LÄS MER

  2. 2. Fabrication, characterization, and modeling of metallic source/drain MOSFETs

    Författare :Valur Gudmundsson; Per-Erik Hellström; Yee-Chia Yeo; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallic source drain; contact resistivity; Monte Carlo; NiSi; PtSi; SOI; UTB; tri-gate; FinFET; multiple-gate; nanowire; MOSFET; CMOS; Schottky barrier; silicide; SALICIDE;

    Sammanfattning : As scaling of CMOS technology continues, the control of parasitic source/drain (S/D) resistance (RSD) is becoming increasingly challenging. In order to control RSD, metallic source/drain MOSFETs have attracted significant attention, due to their low resistivity, abrupt junction and low temperature processing (≤700 °C). LÄS MER

  3. 3. Modified Stencils for Boundaries and Subgrid Scales in the Finite-Difference Time-Domain Method

    Författare :Jon Häggblad; Björn Engquist; Olof Runborg; Björn Sjögreen; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; FDTD; Yee; Staircasing;

    Sammanfattning : This thesis centers on modified stencils for the Finite-Difference Time-Domain method (FDTD), or Yee scheme, when modelling curved boundaries, obstacles and holes smaller than the discretization length.  The goal is to increase the accuracy while keeping the structure of the standard method, enabling improvements to existing implementations with minimal effort. LÄS MER

  4. 4. Boundary and Interface Conditions for Electromagnetic Wave Propagation using FDTD

    Författare :Jon Häggblad; Björn Engquist; Olof Runborg; Thomas Rylander; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; Numerisk analys;

    Sammanfattning : Simulating electromagnetic waves is of increasing importance, for example, due to the rapidly growing demand of wireless communication in the fields of antenna design, photonics and electromagnetic compatibility (EMC). Many numerical and asymptotic techniques have been developed and one of the most common is the Finite-Difference Time-Domain (FDTD) method, also known as the Yee scheme. LÄS MER

  5. 5. Topology optimization of antennas and waveguide transitions

    Författare :Emadeldeen Hassan; Martin Berggren; Daniel Noreland; Eddie Wadbro; Mats Gustafsson; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Maxwell s equations; topology optimization; antennas; waveguide transition; finite-difference time-domain; gradient-based optimization; adjoint-field problem; microwave devices.; business data processing; administrativ databehandling;

    Sammanfattning : This thesis introduces a topology optimization approach to design, from scratch, efficient microwave devices, such as antennas and waveguide transitions. The design of these devices is formulated as a general optimization problem that aims to build the whole layout of the device in order to extremize a chosen objective function. LÄS MER