Essays about: "Wet Etching"

Showing result 6 - 10 of 17 essays containing the words Wet Etching.

  1. 6. AlP sacrificial layer for GaP NW growth

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

    Author : Patrick Flatt; [2020]
    Keywords : Nanowire; Substrate Reuse; Sacrificial Layer; Epitaxy; Wafer; MOVPE; Etching; GaP; AlP; SiN; Au; SEM; Physics and Astronomy;

    Abstract : III-V semiconductor nanowires (NWs) display outstanding potential for many technological applications, but their implementation into devices is restricted due to high material and fabrication costs. Common techniques for NW synthesis rely on single crystalline substrates, which are single-use and have large costs associated to them. READ MORE

  3. 7. Study of ohmic contact formation on AlGaN/GaN heterostructures

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Kai-Hsin Wen; [2019]
    Keywords : ohmic contacts; wide bandgap; Ta-based; recess etch; N-vacancies;

    Abstract : It is challenging to achieve low-resistive ohmic contacts to III-nitride semiconductors due to their wide bandgap. A common way to reduce the contact resistance is to recess the ohmic area prior to metallization. READ MORE

  4. 8. Enrichment of microparticles in droplets using acoustophoresis

    University essay from Uppsala universitet/Mikrosystemteknik

    Author : Klara Björnander Rahimi; [2018]
    Keywords : droplet microfluidics; acoustophoresis;

    Abstract : Acoustophoresis is a label free method where the acoustic radiation force is used to manipulate microparticles inside microfluidic channels. The magnitude of the force is dependent of several parameters, which include the density, speed of sound and size of the microparticles, as well as the amplitude of the pressure waves. READ MORE

  5. 9. Fabrication and characterization of nano/micrometer glass channels with UV lithography

    University essay from Uppsala universitet/Mikrosystemteknik; Uppsala universitet/Institutionen för cell- och molekylärbiologi; Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Krishna Narayan; [2017]
    Keywords : Microtechnology; Biotechnology; Nanotechnology;

    Abstract : In this project, fabrication and characterization of nano/microfluidic channels on borosilicate glass substrate were carried out using a Photo/Ultraviolet (UV) lithography method, which has applications in single-cell analysis. In our single-cell analysis glass system, the bacterial cells will be made to sit in the micrometer channels and also the sub-micron size channels around 300 nm is aspired so it helps in passing the fluid to the outlet hole while holding the cells back. READ MORE

  6. 10. Wet Etching of Silicon Germanium Nanowires

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

    Author : Grigory Liubchenko; [2017]
    Keywords : Wet Etching; Nanowires; Physics and Astronomy;

    Abstract : The aim of this project is to understand the wet etching mechanism of SiGe at the nanoscale. We will use the etching of SiGe nanowires as a case study and we will optimize the etchant solution in order to achieve high selectivity over Si, preserve the shape of SiGe nanowire (isotropic etching) and control their diameter below the threshold of ten nanometers. READ MORE