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Open access
Nature Communications, volume 11, issue 1, publication number 1690

Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO2

Publication typeJournal Article
Publication date2020-04-03
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor16.6
ISSN20411723
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Abstract

Picosecond strain pulses are a versatile tool for investigation of mechanical properties of meso- and nano-scale objects with high temporal and spatial resolutions. Generation of such pulses is traditionally realized via ultrafast laser excitation of a light-to-strain transducer involving thermoelastic, deformation potential, or inverse piezoelectric effects. These approaches unavoidably lead to heat dissipation and a temperature rise, which can modify delicate specimens, like biological tissues, and ultimately destroy the transducer itself limiting the amplitude of generated picosecond strain. Here we propose a non-thermal mechanism for generating picosecond strain pulses via ultrafast photo-induced first-order phase transitions (PIPTs). We perform experiments on vanadium dioxide VO2 films, which exhibit a first-order PIPT accompanied by a lattice change. We demonstrate that during femtosecond optical excitation of VO2 the PIPT alone contributes to ultrafast expansion of this material as large as 0.45%, which is not accompanied by heat dissipation, and, for excitation density of 8 mJ cm−2, exceeds the contribution from thermoelastic effect by a factor of five.

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GOST Copy
Mogunov I. A. et al. Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO2 // Nature Communications. 2020. Vol. 11. No. 1. 1690
GOST all authors (up to 50) Copy
Mogunov I. A., Lysenko S., Fedianin A. E., Fernández F., Rúa A., Kent A., Akimov A., Kalashnikova A. Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO2 // Nature Communications. 2020. Vol. 11. No. 1. 1690
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/s41467-020-15372-z
UR - https://doi.org/10.1038%2Fs41467-020-15372-z
TI - Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO2
T2 - Nature Communications
AU - Mogunov, Ia. A.
AU - Lysenko, Sergiy
AU - Fedianin, Anatolii E
AU - Fernández, Félix
AU - Rúa, Armando
AU - Kent, A.D.
AU - Kalashnikova, A.M.
AU - Akimov, A.V.
PY - 2020
DA - 2020/04/03 00:00:00
PB - Springer Nature
IS - 1
VL - 11
PMID - 32245951
SN - 2041-1723
ER -
BibTex
Cite this
BibTex Copy
@article{2020_Mogunov,
author = {Ia. A. Mogunov and Sergiy Lysenko and Anatolii E Fedianin and Félix Fernández and Armando Rúa and A.D. Kent and A.M. Kalashnikova and A.V. Akimov},
title = {Large non-thermal contribution to picosecond strain pulse generation using the photo-induced phase transition in VO2},
journal = {Nature Communications},
year = {2020},
volume = {11},
publisher = {Springer Nature},
month = {apr},
url = {https://doi.org/10.1038%2Fs41467-020-15372-z},
number = {1},
doi = {10.1038/s41467-020-15372-z}
}
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