Sökning: "diffraction"

Visar resultat 41 - 45 av 359 uppsatser innehållade ordet diffraction.

1. 41. Sputtered Transparent Contact Layers for Bifacial and Tandem Solar Cells

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Solcellsteknik

   Författare :Klara Kiselman; [2022]
   Nyckelord :Solar cells; ITO; indium doped tin oxide; bifacial cell; tandem cell; transparent conductive oxides;

   Sammanfattning : A key to solar cells with lower environmental impact is higher efficiency and reduced material usages. Bifacial solar cells may have a higher efficiency as light can enter from two directions and tandem solar cells may use a larger part of the incoming solar spectrum, increasing the efficiency. LÄS MER

3. 42. Comparative investigation of micromechanisms of plastic deformation by in-situ tensile tests of highly textured 316L steel

   Master-uppsats, Uppsala universitet/Institutionen för materialvetenskap

   Författare :Subhani Kumarasinghe; [2022]
   Nyckelord :Additive manufacturing; texture control; plastic deformation;

   Sammanfattning : Additive manufacturing (AM) is identified as one of the best techniques in manufacturing components addressing most of the current challenges including material scarcity, design complexity, material compatibility, etc. Stainless steel 316L is one of the promising material candidates in AM due to its extraordinary properties that are useful in a wide variety of industries. LÄS MER

4. 43. RayTracing Analysis and Simulator Design of Unmanned Aerial Vehicle Communication and Detection System in Urban Environment

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

   Författare :Jie Huang; [2022]
   Nyckelord :Drone detection; phased array; angle of arrival; MUltiple SIgnal Classification; raytracing; reflection; diffraction; Drönardetektering; fasad array; ankomstvinkel; MUltiple SIgnal Classification; raytracing; reflektion; diffraktion;

   Sammanfattning : In recent years, unmanned aerial vehicles (UAV), also called drones, have experienced a rapid increase, which leads to the concern of illegal use of them. Passive RF is one of the effective ways to detect drones by receiving drones’ communication signals. LÄS MER

5. 44. A study of optical and structural properties of spin-coated V2O3 thin films on sapphire substrates

   Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

   Författare :Jennifer Silander; [2022]
   Nyckelord :Optical properties; transmittance; FTIR spectrometry; scanning electron microscopy; x-ray diffraction; metal-insulator transition; crystalline material; sol-gel; spin-coating; vanadium oxide; infrared light;

   Sammanfattning : Many transition metal oxides exhibit a Metal-Insulator Transition (MIT). This is an interesting phenomenon where the material undergoes a structural phase transition, and the electronic charge is redistributed in the crystal lattice. LÄS MER

7. 45. Electrochemical Behavior of the High Entropy Oxide (Mg,Co,Ni,Zn)1-xLixO (x=0,35)

   Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Rasmus Sandström Kinnane; [2022]
   Nyckelord :high entropy oxides; lithium-ion battery; x-ray diffraction; scanning electron microscopy; cyclic voltammetry;

   Sammanfattning : Today's society is currently developing lithium-ion batteries to eventually replace the use of fossil fuels. High entropy oxides is a new type of material to use as an anode in the lithium-ion battery. These high entropy oxides may consist of a few different transition metals including lithium and oxygen. LÄS MER