Results 1 to 10 of about 170,491 (164)

Structural dynamics of incommensurate charge-density waves tracked by ultrafast low-energy electron diffraction [PDF]

open access: yesStructural Dynamics, 2020
We study the non-equilibrium structural dynamics of the incommensurate and nearly commensurate charge-density wave (CDW) phases in 1T- TaS 2. Employing ultrafast low-energy electron diffraction with 1 ps temporal resolution, we investigate the ...
G. Storeck   +7 more
doaj   +2 more sources

Instrumentation for low‐energy electron diffraction [PDF]

open access: yesReview of Scientific Instruments, 1983
Recent developments in instrumentation for low-energy electron diffraction (LEED) are reviewed. After a summary of the major types of measurements in LEED, the properties of LEED instruments that are important in performing these measurements are described. A detailed discussion is presented on the major components of a LEED diffractometer.
Lagally M G
exaly   +2 more sources

Optical fiber-driven low-energy electron gun for time-resolved streak diffraction [PDF]

open access: yesEPJ Web of Conferences, 2019
The wave guiding feature of the optical fibre optical fibres is specifically exploited to construct a novel type of electron gun to realize single-shot low-energy electron diffraction experiments with the sub-picosecond resolution for studying ...
Lee Chiwon   +2 more
doaj   +1 more source

Disentangling surface atomic motions from surface field effects in ultrafast low-energy electron diffraction

open access: yesCommunications Materials, 2022
Ultrafast low-energy electron diffraction allows the direct observation of atomic motions in structural transitions, but is accompanied by a strong photoinduced emission resulting in surface field effects. Here, these effects are quantified, enabling the
Chiwon Lee   +3 more
doaj   +1 more source

One-Step Theory View on Photoelectron Diffraction: Application to Graphene

open access: yesNanomaterials, 2022
Diffraction of photoelectrons emitted from the core 1s and valence band of monolayer and bilayer graphene is studied within the one-step theory of photoemission. The energy-dependent angular distribution of the photoelectrons is compared to the simulated
Eugene Krasovskii
doaj   +1 more source

Influence of cold deformation on microstructure, crystallographic orientation and tensile properties of an experimental austenitic Fe–26Mn-0.4C steel

open access: yesJournal of Materials Research and Technology, 2022
The correlation between microstructure, crystallographic orientation and grain boundaries characteristics of an austenitic high manganese steel was systematically investigated.
Marcos Natan da Silva Lima   +7 more
doaj   +1 more source

Optimum technological modes of ion implantation and subsequent annealing for formation of thin nanosized silicide films [PDF]

open access: yesE3S Web of Conferences, 2021
Using the methods of electron spectroscopy and slow electron diffraction, we studied the processes of the formation of nanosized metal silicide films in the near-surface region of Si (111) and Si (100) during low-energy implantation of Ba ions and ...
Bekpulatov Ilkhom   +3 more
doaj   +1 more source

Structural phase transitions and phase ordering at surfaces probed by ultrafast LEED [PDF]

open access: yesEPJ Web of Conferences, 2019
We demonstrate the capability of ultrafast low-energy electron diffraction to resolve phase-ordering kinetics and structural phase transitions on their intrinsic time scales with ultimate surface sensitivity.
Horstmann Jan Gerrit   +8 more
doaj   +1 more source

Surface Structural Analysis of the Layered Perovskite Ca1.9Sr0.1RuO4 by Low Energy Electron Diffraction I-V

open access: yesAceh International Journal of Science and Technology, 2018
– The atomic structure at surface of the layered perovskite Ca1.9Sr0.1RuO4 has been studied by Low Energy Electron Diffraction (LEED) I-V. The perovskite Ca1.9Sr0.1RuO4 of single crystal was cleaved in ultra high vacuum chamber (the pressure in the ...
Ismail Ismail   +3 more
doaj   +1 more source

Laser Pyrolysis of Iron Oxide Nanoparticles and the Influence of Laser Power

open access: yesMolecules, 2023
The purpose of this study was to investigate the synthesis of iron oxide nanoparticles under two different conditions, namely high and low gas flow rates, using laser pyrolysis and to examine the influence of laser power.
Iulia Ioana Lungu   +7 more
doaj   +1 more source

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