Sökning: "gold etching"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden gold etching.

  1. 1. BCP Lithography Defined Arrays of InAs NWs Grown Using MOVPE with Au Seeds

    Master-uppsats, Lunds universitet/Lunds Tekniska Högskola; Lunds universitet/Fasta tillståndets fysik

    Författare :Björn Landeke-Wilsmark; [2022]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : In this report we outline a detailed process flow for a quick and inexpensive implementation of large dense arrays of InAs nanowires (NWs) grown in the reactive ion etching/etched (RIE) pores of a SiO2/SiNx mask on top of an InAs/Si(111) substrate. The self-assembled (hexagonally close-packed) pattern of poly(methyl-methacrylate) (PMMA) cylinders in a poly(styrene) (PS) matrix adopted by a linear diblock poly(styrene-block-methyl-methacrylate) P(S-b-MMA) block-copolymer (BCP) was transferred to the dielectric stack (consisting of a ≈10 nm plasma enhanced chemical vapour deposition/deposited (PECVD) SiNX layer topped by a thin atomic layer deposition/deposited (ALD) SiO2 film) using a two-step RIE procedure. LÄS MER

  3. 2. Investigating Optical-Field-Induced Currents in GaN using Ultrafast Lasers

    Magister-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Vidar Flodgren; [2019]
    Nyckelord :GaN; gallium nitride; nanoscience; material science; ultrafast lasers; Yb Laser; Pharos Laser; titanium sapphire laser; device fabrication; lift-off; gold etching; optical-field-induced currents; modelling; matlab; Physics and Astronomy;

    Sammanfattning : This study saw the development of an experimental setup capable of generating and measuring optical-field-induced currents in a variety of nanodevices fabricated specifically for this project. Each device design features two metallic contacts, closely separated by about 5 micrometers, deposited onto a semiconductor or insulator substrate. LÄS MER

  4. 3. Syntes och karakterisering av ogiftiga organiska metall halid halvledare för solceller

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Oskar Dahlin; [2015]
    Nyckelord :Solar cells; Solar energy; Lead free perovskites; Semiconductors; Organic metal halide;

    Sammanfattning : The endeavor to have more efficient solar cells and as environmentally beneficial as possible are the driving forces for this work. The way to reach this is by research to better the understanding of the mechanisms and parameters that govern the performance of solar cells. LÄS MER

  5. 4. Development of All Dry Nanoimprint Lift-Off Process for Growth of Nanowires

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Yasna Aberi; [2014]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : In this project, nanoimprint lithography has been applied to define gold particles on the surface of an InP wafer. For achieving this aim, a dry etching process has been developed to create resist undercut for the lift-off. LÄS MER

  7. 5. Metal-assisted etching of nanopores in silicon

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Alexander Mörsdorf; [2014]
    Nyckelord :;

    Sammanfattning : Nanoporous membranes are an interesting approach to manufacture a variety of devices for different applications. For example in biomedicine the separation of molecules or cells or the sequence-based analysis of single-stranded DNA are of great interest. LÄS MER