Essays about: "heterostructure"

Showing result 1 - 5 of 23 essays containing the word heterostructure.

  1. 1. Mechanical properties of SiC nanowires with polytypes

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Anders Vesti; [2019]
    Keywords : atomistic modeling; nanowires; molecular dynamics; simulation; SiC; silicon carbide; fracture behavior; nanomechanics; Physics and Astronomy;

    Abstract : In this report, we model the mechanical properties and fracture behavior of SiC nanowires with different polytypes using Molecular Dynamics (MD) simulations. The mechanical properties investigated are the Young’s modulus, the maximum tensile stress and the fracture strain. The three polytype tested are SiC (3C), (2H) and (4H). READ MORE

  2. 2. Finite element modelling of strained nanowire heterostructures

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Alexander Grape Wyke; [2019]
    Keywords : Strain; nanowire; heterostructure; physics; nanophysics; COMSOL; simulation; lattice; Physics and Astronomy;

    Abstract : When two materials with different lattice constants are grown together, this generates stress between them, and therefore strain. This strain causes them to have different thermal and electrical properties, and this is especially important on the nanoscale where changes have large impacts. READ MORE

  3. 3. Modelling of injection of electrons by low-dimensional nanowire into a reservoir

    University essay from Linköpings universitet/Teoretisk Fysik

    Author : Ivan Yakymenko; [2018]
    Keywords : quantum wire; magnetic electron focusing; electron flow; electron injector and detector; semiconductor heterostructure; two-dimensional electron gas;

    Abstract : High-mobility two-dimensional electron gas (2DEG) which resides at the interface between GaAs and AlGaAs layered semiconductors has been used experimentally and theoretically to study ballistic electron transport. The present project is motivated by recent experiments in magnetic electron focusing. READ MORE

  4. 4. Electron Assisted Growth of h-BN on Gr/Ir(111)

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Virginia Boix De La Cruz; [2018]
    Keywords : Two-dimension materials; 2D; Graphene; hexagonal Boron Nitride; Growth; CVD; STM; XPS; Physics and Astronomy;

    Abstract : Stacked heterostructures of two-dimensional (2D) materials are emerging as promising building blocks for a wide range of applications. These devices, which range from tunneling transistors to light-emitting diodes, use the properties of 2D materials that are not accessible by their bulk counterparts. READ MORE

  5. 5. Electrical characterization of strained InP-Ga(x)In(1-x)As core-shell nanowires

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Author : Lorenz Frevel; [2016]
    Keywords : nanowire; strain; piezoelectric effect; indium phosphide; InP; gallium indium arsenide; GaInAs; InGaAs; core-shell; radial heterostructure; Physics and Astronomy;

    Abstract : This project report attempts to measure the piezoelectric effect in strained core-shell nanowires. The core material is wurtzite indium phosphide (InP) and the shell material wurtzite gallium indium arsenide (Ga(x)In(1-x)As). READ MORE