Essays about: "Dielectric grating"

Found 3 essays containing the words Dielectric grating.

  1. 1. Ray-Tracing Modeling of Grating Lobe Level Reduction by Using a Dielectric Dome Antenna

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

    Author : Lukas Jonasson; [2023]
    Keywords : Array antenna; Dielectric dome; Ray-Tracing; Grating lobe; Particle Swarm optimization; Gruppantenn; Dielektrisk kupol; Strålspårning; Gallerlob; Particle Swarm optimering;

    Abstract : With the newly deployed fifth-generation telecommunications system and upcoming sixth-generation, high-gain antennas with hemispherical scanning capabilities are of high interest. Phased array antennas allow for fast scanning capabilities with electronic beam-steering. READ MORE

  3. 2. Laser Beam Pathway Design and Evaluation for Dielectric Laser Acceleration

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Karwan Rasouli; [2019]
    Keywords : Dielectric Laser Acceleration; DLA; Particle Acceleration; Acceleration; Femtosecond Laser; Dielectric grating; Laser Beam Focus; Beam Focusing; Scanning Electron Microscope; SEM; Microscope Imaging;

    Abstract : After nearly 100 years of particle acceleration, particle accelerator experiments continue providing results within the field of high energy physics. Particle acceleration is used worldwide in practical applications such as radiation therapy and materials science research. Unfortunately, these accelerators are large and expensive. READ MORE

  4. 3. Polymer electrochromism and surface plasmons combined on metallic diffraction gratings

    University essay from Institutionen för teknik och naturvetenskap

    Author : Jérôme Garnier; [2008]
    Keywords : Conducting polymers; electrochromism; surface plasmons; PEDOT-PSS; PEDOT-S;

    Abstract : All conducting polymers are potentially electrochromic, owing to the injection of charge carriers that changes their electronic structure and results in a shift of their optical absorption towards higher wavelengths. PEDOT-PSS and PEDOT-S are very promising materials in terms of electrochromic properties, due to the good contrast existing between their doped and undoped forms. READ MORE