Essays about: "Chemical etching"

Showing result 21 - 25 of 28 essays containing the words Chemical etching.

  1. 21. Single Crystalline CVD Diamond Based Devices for Power Electronics Applications

    University essay from Uppsala universitet/Elektricitetslära

    Author : Ehrnebo Adrian; [2014]
    Keywords : ;

    Abstract : Chemical vapor deposited single-crystalline diamond has rare material properties such as thermal conductivity five times as high as copper, a wide band gap, a high breakdown field and high carrier mobilities. This makes it a very interesting material for high power, high frequency and high temperature applications. READ MORE

  3. 22. Etching methods for Electron Microscopy of Actinide Nitride Fuel.

    University essay from KTH/Reaktorfysik

    Author : Boel Morenius; Timothy Ekelund; [2013]
    Keywords : ;

    Abstract : This report describes the process of a Bachelor thesis project conducted by two students at the KTH Royal Institute of Technology in Stockholm, Sweden. The project consists of establishing a functioning etching method for enhancing the visibility of grain structure in uranium nitride ( ) and uranium-zirconium nitride ( ). READ MORE

  4. 23. Process optimization of IR detectors based on In(Ga)Sb QDs in InAs matrix

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Mina Rajabi; [2012]
    Keywords : ;

    Abstract : This diploma project has been focused on optimization of the D2B IR detector fabrication process using different mesa sidewall treatments and passivation methods. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscope (AFM) measurements have been carried out on samples treated by different wet etching methods, to analyze their surface chemical composition and roughness. READ MORE

  5. 24. The effect of prior austenite grain size on the machinability of a pre-hardened mold steel. : Measurement of average grain size using experimental methods and empirical models.

    University essay from Avdelningen för maskin- och materialteknik

    Author : Muhammad Aatif Irshad; [2011]
    Keywords : prior austenite grain size; machining; mold steels; pre-hardened mold steels; work hardening; retained austenite; metallography; tool steels; chemical etching; prior austenite grains; lath martensite; rough machining; finish machining; Metallographic specimen preparation; Austenite grain growth; cutting tool; cutting tool life; wear; Theoretical average chip thickness;

    Abstract : The use of pre-hardened mold steels has increased appreciably over the years; more than 80% of the plastic mold steels are used in pre-hardened condition. These steels are delivered to the customer in finished state i.e. there is no need of any post treatment. READ MORE

  6. 25. Investigation of Metal-assisted Si Etching for Fabrication of Nanoimprint Lithography Stamps

    University essay from Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

    Author : Ksenia Anokhina; [2010]
    Keywords : metal-assisted chemical etching; nanoimprint stamps;

    Abstract : This diploma thesis deals with the investigation of the metal-assisted catalytic etching (MaCE) of Si. One of the main goals is to study fabrication of stamps for nanoimprint lithography using MaCE. Formation of nanoporous silicon (PSi), Si nanowires (SiNWs) and three-dimensional nanostructures in Si by MaCE is demonstrated. READ MORE