Essays about: "PEEM"

Found 3 essays containing the word PEEM.

1. 1. Femtosecond Photoemission Electron Microscopy of Indium Arsenide Nanowires

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Björn Johansson; [2018]
   Keywords : Indium Arsenide; PEEM; Femtosecond laser; Time-resolved PEEM; InAs; Wurtzite; zinc blende; pump-probe; Photoemission Electron Microscopy; pulsed laser.; Physics and Astronomy;

   Abstract : PhotoEmission Electron Microscopy (PEEM) has proven to be a successful method for examining the electronic characteristics of nanostructures. The experiments relevant for the following report were conducted using a combination of PEEM and a femtosecond pulsed laser to determine the electrical characteristics of Indium Arsenide nanowire of crystal structure varying between wurtzite and zinc blend. READ MORE

3. 2. Photoemission electron microscopy of localized surface plasmons in silver nanostructures: Experiments and simulations

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

   Author : Robin Sutinen Svärd; [2015]
   Keywords : Photoemission electron microscopy; Localized surface plasmon; Ag nanocube; Ag nanoellipsoid; Finite-difference time-domain; Physics and Astronomy;

   Abstract : In this work, spatially resolved localized surface plasmons (LSPs) in individual silver nanocubes and nanoellipsoids are imaged with a photoemission electron microscope (PEEM). Using broadband laser pulses with photon energies below the work function threshold of the material, multiphoton photoemission (MPPE) processes coupled to the LSPs governs the strong enhancement of the plasmonic near-field detected in the PEEM. READ MORE

4. 3. Surface Chemistry and Electrical properties of nanowire devices

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

   Author : Jalil Shah; [2013]
   Keywords : Nanowires; InAs; InP; Scanning Tunneling Microscopy; PEEM; Conductivity; Surface Oxides; Physics and Astronomy;

   Abstract : Surface chemistry and electrical properties of InAs and InP III-V semiconductor nanowires and nanowire based devices were studied using Scanning Tunneling Microscopy (STM) and Spectroscopic Emission and Low Energy Electron Microscopy (SPELEEM). Changes of the surface as well as electrical properties in these devices as a function of annealing temperature under atomic hydrogen background were studied and discussed. READ MORE