Sökning: "point defect"

Visar resultat 21 - 25 av 93 avhandlingar innehållade orden point defect.

  1. 21. Understanding Defect Structures and Host-guest Interactions in Metal-organic Frameworks

    Författare :Kang Zhengzhong; Yaoquan Tu; Lars Ojamäe; KTH; []
    Nyckelord :metal-organic framework; defects; host-guest; molecular dynamics simulation; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : Metal-organic frameworks (MOFs) represent a class of crystalline porous materials with prospective applications in molecular capture, separation, storage and catalysis. It has been discovered that there exist various structural defects in MOFs, which can have dramatic impact on their properties. LÄS MER

  3. 22. Room-temperature defect-engineered spin functionalities in Ga(In)NAs alloys

    Författare :Yuttapoom Puttisong; Weimin Chen; Irina Buyanova; Martin S. Brandt; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Semiconductor spintronics is one of the most interesting research fields that exploits both charge and spin properties for future photonics and electronic devices. Among many challenges of using spin in semiconductors, efficient generation of electron spin polarization at room temperature (RT) remains difficult. LÄS MER

  4. 23. Electron Paramagnetic Resonance Studies of Point Defects in AlGaN and SiC

    Författare :Xuan Thang Trinh; Nguyen Tien Son; Erik Janzén; Mary Ellen Zvanut; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Point defects in semiconductor materials are known to have important influence on the performance of electronic devices. For defect control, knowledge on the model of defects and their properties is required. LÄS MER

  5. 24. Optical properties of point defects in insulators and of transition metal dichalcogenides

    Författare :Christopher Linderälv; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; luminescence quenching; charge transition levels; excitons; transition metal dichalcogenides; monolayer alloys; solid state lighting; color centers; oxygen vacancies; moiré structures; wide band gap oxides;

    Sammanfattning : There is a need for new or modified materials, both to improve current devices and to create novel functionalities. Engineering materials to target specific functionalities requires a better understanding of how microscopic processes impact materials properties. LÄS MER

  7. 25. Defects, renormalization and conformal field theory

    Författare :Alexander Söderberg Rousu; Agnese Bissi; Pedro Liendo; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; defects; boundaries; replica twist defect; conformal field theory; quantum field theory; Coleman-Weinberg mechanism; renormalization group flows; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : Defects in quantum field theories appear in many different contexts and are of great physical interest. Among other things, defects are used to describe the Kondō effect in condensed matter, confinement in quantum chromodynamics, Rényi entropy in quantum information and cosmic strings in string theory. LÄS MER