Sökning: "long-wavelength"

Visar resultat 21 - 25 av 46 avhandlingar innehållade ordet long-wavelength.

  1. 21. Heterogeneous material integration for MEMS

    Författare :Fredrik Forsberg; Frank Niklaus; Lina Sarro; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis describes heterogeneous integration methods for the fabrication of microelectromechanical systems (MEMS). Most MEMS devices reuse the fabrication techniques that are found in the microelectronics integrated circuit industry. This limits the selection of materials and processes that are feasible for the realization of MEMS devices. LÄS MER

  3. 22. Estimation of change in forest variables using synthetic aperture radar

    Författare :Ivan Huuva; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Large scale mapping of changes in forest variables is needed for both environmental monitoring, planning of climate actions and sustainable forest management. Remote sensing can be used in conjunction with field data to produce wall-to-wall estimates that are practically impossible to produce using traditional field surveys. LÄS MER

  4. 23. Significance of grain boundaries for transport phenomena in graphene and proton-conducting barium zirconate

    Författare :Edit Ahlberg Helgee; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; graphene; density functional theory; phonons; proton conduction; grain boundaries; BaZrO3; interatomic model potentials;

    Sammanfattning : Grain boundaries can have a significant influence on the properties of polycrystalline materials. When determining the type and extent of this influence it is frequently useful to employ computational methods such as density functional theory and molecular dynamics, which can provide models of the grain boundary structure at the atomistic level. LÄS MER

  5. 24. InGaAs-based quantum dots for infrared imaging applications : growth and characterisation

    Författare :Linda Höglund; Per-Olof Holz; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : In this thesis, results are presented from the development of quantum dot (QD) based infrared photodetectors (IPs). This includes epitaxial growth of QDs, investigations of the structural, optical and electronic properties of the QD based material as well as characterisation of the resulting components. LÄS MER

  7. 25. Electronic and dynamical aspects of the stability of metallic structures

    Författare :Babak Sadigh; KTH; []
    Nyckelord :;

    Sammanfattning : The structural phase stability of several transition metalsystems have been studied, using first-principles electronicstructure calculations. Frozen phonon techniques have been usedto study the details of structural phase transformations e.g. LÄS MER