Nanoscale heat transport from Ge hut, dome, and relaxed clusters on Si(001) measured by ultrafast electron diffraction

2015 ◽  
Vol 106 (5) ◽  
pp. 053108 ◽  
Author(s):  
T. Frigge ◽  
B. Hafke ◽  
V. Tinnemann ◽  
B. Krenzer ◽  
M. Horn-von Hoegen
Keyword(s):  
Electron Diffraction ◽  
Heat Transport ◽  
Ultrafast Electron Diffraction ◽  
Nanoscale Heat Transport

Nanoscale Heat Transport through Epitaxial Ultrathin Hetero Films: Bi(111)/Si(001) and Bi(111)/Si(111)

2012 ◽  
Vol 1404 ◽  
Author(s):  
Anja Hanisch-Blicharski ◽  
Simone Wall ◽  
Annika Kalus ◽  
Tim Frigge ◽  
Michael Horn- von Hoegen
Keyword(s):  
Thin Films ◽  
Electron Diffraction ◽  
Linear Dependence ◽  
Decay Constant ◽  
Laser Pulses ◽  
Ultrafast Electron Diffraction ◽  
Cooling Process ◽  
Nanoscale Heat Transport ◽  
Acoustic Mismatch ◽  
Short Laser Pulses

ABSTRACTThe cooling process of ultrathin hetero films upon excitation with short laser pulses was studied for epitaxial Bi(111) films on Si(001) and Si(111) substrates by means of the Debye-Waller effect with ultrafast electron diffraction. From the exponential decay of the temperature, a cooling time constant was determined as a function of thickness for both substrates. For Bi/Si(111), a linear dependence between the decay constant and thickness was observed, even for 2.8 nm thin films , as predicted from the diffuse mismatch model (DMM) and the acoustic mismatch model (AMM). However, with Bi/Si(001), a significant deviation from this linear dependence was observed for film thicknesses below 5 nm.

Ultra-fast electron diffraction at surfaces: From nanoscale heat transport to driven phase transitions

2013 ◽  
Vol 127 ◽  
pp. 2-8 ◽  
Author(s):  
A. Hanisch-Blicharski ◽  
A. Janzen ◽  
B. Krenzer ◽  
S. Wall ◽  
F. Klasing ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Electron Diffraction ◽  
Heat Transport ◽  
Fast Electron ◽  
Nanoscale Heat Transport

scholarly journals Ultrafast lattice dynamics in lead selenide quantum dot

2019 ◽  
Vol 205 ◽  
pp. 04017
Author(s):  
Xuan Wang ◽  
Matthew Gorflen ◽  
Jianming Cao
Keyword(s):  
Quantum Dots ◽  
Electron Diffraction ◽  
Femtosecond Laser ◽  
Heat Transport ◽  
Lattice Dynamics ◽  
Phonon Coupling ◽  
Ultrafast Electron Diffraction ◽  
Phonon Bottleneck ◽  
Electron Phonon Coupling ◽  
Lattice Dilation

We monitored the femtosecond-laser-induced lattice dynamics in PbSe quantum dots by ultrafast electron diffraction. The electron-phonon coupling didn’t show phonon bottleneck. And lattice dilation exhibited unusual features. Heat transport to the substrate deviated significantly from Fourier’s Law.

scholarly journals Ultrafast Optics: Sub‐10‐fs Timing for Ultrafast Electron Diffraction with THz‐Driven Streak Camera (Laser Photonics Rev. 15(2)/2021)

2021 ◽  
Vol 15 (2) ◽  
pp. 2170013
Author(s):  
Junho Shin ◽  
Hyun Woo Kim ◽  
In Hyung Baek ◽  
Sunjeong Park ◽  
Hyeon Sang Bark ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Streak Camera ◽  
Ultrafast Optics ◽  
Ultrafast Electron Diffraction

Compressed Ultrafast Electron Diffraction Imaging Through Electronic Encoding

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Dalong Qi ◽  
Chengshuai Yang ◽  
Fengyan Cao ◽  
Jinyang Liang ◽  
Yilin He ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Ultrafast Electron Diffraction ◽  
Diffraction Imaging

scholarly journals Liquid-phase mega-electron-volt ultrafast electron diffraction

2021 ◽  
Author(s):  
Joao Pedro Figueira Nunes ◽  
Kathryn Ledbetter ◽  
Ming-Fu Lin ◽  
Michael Kozina ◽  
Elisa Biasin ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Electron Diffraction ◽  
Ultrafast Electron Diffraction ◽  
Electron Volt
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