Essays about: "seed layer"

Showing result 1 - 5 of 22 essays containing the words seed layer.

  1. 1. Investigation of Methods to Improve PZT Sol-Gel Deposition Process for Energy Harvesting Applications

    University essay from KTH/Hälsoinformatik och logistik

    Author : Mikael Granberg; [2022]
    Keywords : PZT; sol-gel; self-polarization; seed layer; titanium oxidation; PZT; sol-gel; självpolarisering; seedlager; titanoxidering;

    Abstract : The purpose of this work was to investigate ways to modify Silex sol-gel deposition of PZT (PbZrxTi(1-x)O3, Lead Zirconate Titanate) in order to improve its properties for energy harvesting applications. A number of methods to improve the figure of merit for energy harvesting (FOM= e312/ε), cause self-polarization, increase lifetime, reduce cost, increase throughput or simplify processing were tested. READ MORE

  3. 2. Optimisation of autoencoders for prediction of SNPs determining phenotypes in wheat

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Institutionen för informationsteknologi

    Author : Karthik Nair; [2021]
    Keywords : Deep Learning; Machine Learning; Convolutional Neural Networks; Convolutional Variational Autoencoders; Autoencoders; SNP-Phenotype relationships; Genetics; Agricultural Bioinformatics; Neural Networks; Unsupervised Learning;

    Abstract : The increase in demand for food has resulted in increased demand for tools that help streamline plant breeding process in order to create new varieties of crops. Identifying the underlying genetic mechanism of favourable characteristics is essential in order to make the best breeding decisions. READ MORE

  4. 3. On the Identification of Nonlinear Optima in Spatially Developing Boundary Layer Flow

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Emanuel Taschner; [2021]
    Keywords : transition to turbulence; nonlinear stability analysis; boundary layer flow; övergång till turbulens; icke-linjär stabilitetsanalys; gränsskiktsflöden;

    Abstract : The present thesis studies transition to turbulence in a spatially developing bound-ary layer for subcritical Reynolds numbers. A fully nonlinear iterative direct-adjoint optimisation technique is employed to identify finite amplitude perturbations triggering transition in an energy efficient way. READ MORE

  5. 4. Study of HfN as seed layer for next generation of BAW RF filters : synthesis, characterization, and investigation of piezoelectric performance

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Eduard Llorens Balada; [2020]
    Keywords : HfN; AlScN; AlN; sputtering; XRD; SEM; seed layer; epitaxial growth;

    Abstract : Micro-electro-mechanical systems (MEMS) have become an essential component of a wide range ofelectronic devices over the last decades such as accelerometers, microphones, gas sensors, and filters.During this new millennium, a new radio frequency (RF) technology has been developed to satisfy thetough demands that arose due to the implementation of 5G wireless communication: bulk acoustic wave(BAW) filters. READ MORE

  6. 5. Tailoring the Magnetic Properties of Amorphous TbCo Nano Films

    University essay from Uppsala universitet/Materialfysik

    Author : Viktor Djurberg; [2018]
    Keywords : Magnetic properties; Amorphous TbCo film; Magnetic Anisotropy; Interface effects;

    Abstract : The possibility to change magnetic anisotropy of amorphous TbCo films from out-of-plane to in-plane has been investigated. The effects of TbCo film's thickness and composition on the magnetic anisotropy were investigated together with the effects of growing the TbCo films on a SmCo seed layer. READ MORE