Sökning: "intermediate layer"

Visar resultat 21 - 25 av 45 uppsatser innehållade orden intermediate layer.

  1. 21. FPGA Co-Processing in Software-Defined Radios

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Leon Fernandez; [2019]
    Nyckelord :Internet of Things; Software-Defined Radio; USRP; GNU Radio; IEEE 802.15.4; Sakernas Internet; Mjukvarudefinierad Radio; USRP; GNU Radio; IEEE 802.15.4;

    Sammanfattning : The Internet of Things holds great promises for the future. In the smart cities of tomorrow, wireless connectivity of everyday objects is deemed essential in ensuring efficient and sustainable use of vital, yet limited resources such as water, electricity and food. However, radio communication at the required scale does not come easily. LÄS MER

  3. 22. Silicon surface passivation via ultra-thin SiO2, TiO2, and Al2O3 layers

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Anton Ek; [2019]
    Nyckelord :surface passivation; ALD; silicon; solar cell; SiO2; Al2O3; TiO2; stacks; characterization; optimization; RSM; temperature;

    Sammanfattning : Energy traps at the silicon surface originating from discontinuities in the lattice is detrimental to the performance of solar cells. Acting as recombination centers, they offer a location where the charge carriers may easily return to their original energy band after excitation. LÄS MER

  4. 23. Method Development and Analysis of Tensile Stresses in Windscreens : A study on the dynamic stresses on windscreens subjected to random vibrations.

    Master-uppsats, Högskolan i Jönköping/Tekniska Högskolan

    Författare :Philip Reis; Karthik Murthy; [2018]
    Nyckelord :Dynamic Stresses; FE Method; Laminated Glass; Modal Analysis; Random Vibration; Windscreens;

    Sammanfattning : The thesis work deals with the study and determination of static and dynamic stresses acting on windscreen structures during transportation from the manufacturing site to the production plant. To simulate the stress distribution affected by the transportation, a finite element model of the windscreen is development of the structure and tested. LÄS MER

  5. 24. Creating nanopatterned polymer films for use in light-emitting electrochemical cells

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Thomas Moberg; [2018]
    Nyckelord :Thermal nanoimprint lithography; soft stamp; intermediate polymer stamp; Light-emitting electrochemical cell; LEC; Super Yellow; polystyrene; poly ethylene oxide ; nanopattern;

    Sammanfattning : Thermal nanoimprint lithography (T-NIL) is a cheap and fast technique to produce nanopatterns in polymeric materials. It creates these patterns by pressing a stamp down into a polymer film that has been heated above its glass transition temperature. LÄS MER

  7. 25. Phase field modelling of LLZO/LCO cathode-electrolyte interfaces in solid state batteries

    Master-uppsats, Uppsala universitet/Strukturkemi

    Författare :Michele Riva; [2018]
    Nyckelord :LLZO; LCO; phase; field; phase-field; phasefield; solid; state; solid-state; solidstate; battery; batteries; sintering; model; modelling;

    Sammanfattning : This work describes two phase field models for the simulation of the interface evolution between a LiCoO2 cathode (LCO) and a Li7La3Zr2O12 solid electrolyte (LLZO) in a Li-metal/LLZO/LCO battery during high temperature sintering. In these conditions atomic species tend to diffuse into the opposing material, creating an intermediate layer of mixed composition which resists the movement of lithium ions. LÄS MER