We report on the ultrafast vibrational response of single copper nanowires investigated by femtosecond transient reflectivity measurements. The oscillations of the sample reflectivity are correlated with individual modes of resonance for wires with a diameter ranging from 100 to 500 nm and are compared with 2D finite element simulation. Fluctuation of the sample-substrate coupling is illustrated through its effect on the damping rate. We demonstrate elastic confinement in free standing wires which allowed the detection of up to the third harmonic of the breathing mode. By removing the energy relaxation channel towards the substrate, we obtained nano-oscillators with quality factors up to 130. Finally, taking advantage of the very high spectral resolution achieved on free standing wires, we could observe the elastic coupling between two close wires via their polymer cladding.
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21 November 2013
Research Article|
November 18 2013
Vibrational response of free standing single copper nanowire through transient reflectivity microscopy
Laurent Belliard;
Laurent Belliard
a)
1
Institut des NanoSciences de Paris, UMR7588 CNRS, Université Pierre et Marie Curie
, 4 place Jussieu, 75005 Paris, France
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Thomas W. Cornelius;
Thomas W. Cornelius
2
Aix-Marseille Université, CNRS, IM2NP UMR 7334, Faculté des Sciences
, Campus de Saint-Jérôme, Avenue Escadrille Normandie Niemen–Case 142, F-13397 Marseille Cedex, France
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Bernard Perrin;
Bernard Perrin
1
Institut des NanoSciences de Paris, UMR7588 CNRS, Université Pierre et Marie Curie
, 4 place Jussieu, 75005 Paris, France
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Nazim Kacemi;
Nazim Kacemi
1
Institut des NanoSciences de Paris, UMR7588 CNRS, Université Pierre et Marie Curie
, 4 place Jussieu, 75005 Paris, France
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Loïc Becerra;
Loïc Becerra
1
Institut des NanoSciences de Paris, UMR7588 CNRS, Université Pierre et Marie Curie
, 4 place Jussieu, 75005 Paris, France
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Olivier Thomas;
Olivier Thomas
2
Aix-Marseille Université, CNRS, IM2NP UMR 7334, Faculté des Sciences
, Campus de Saint-Jérôme, Avenue Escadrille Normandie Niemen–Case 142, F-13397 Marseille Cedex, France
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Maria Eugenia Toimil-Molares;
Maria Eugenia Toimil-Molares
3
GSI Helmholtz Centre for Heavy Ion Research
, Planckstr. 1, D-64291 Darmstadt, Germany
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Marco Cassinelli
Marco Cassinelli
3
GSI Helmholtz Centre for Heavy Ion Research
, Planckstr. 1, D-64291 Darmstadt, Germany
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Laurent Belliard
1,a)
Thomas W. Cornelius
2
Bernard Perrin
1
Nazim Kacemi
1
Loïc Becerra
1
Olivier Thomas
2
Maria Eugenia Toimil-Molares
3
Marco Cassinelli
3
1
Institut des NanoSciences de Paris, UMR7588 CNRS, Université Pierre et Marie Curie
, 4 place Jussieu, 75005 Paris, France
2
Aix-Marseille Université, CNRS, IM2NP UMR 7334, Faculté des Sciences
, Campus de Saint-Jérôme, Avenue Escadrille Normandie Niemen–Case 142, F-13397 Marseille Cedex, France
3
GSI Helmholtz Centre for Heavy Ion Research
, Planckstr. 1, D-64291 Darmstadt, Germany
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
J. Appl. Phys. 114, 193509 (2013)
Article history
Received:
August 26 2013
Accepted:
November 04 2013
Citation
Laurent Belliard, Thomas W. Cornelius, Bernard Perrin, Nazim Kacemi, Loïc Becerra, Olivier Thomas, Maria Eugenia Toimil-Molares, Marco Cassinelli; Vibrational response of free standing single copper nanowire through transient reflectivity microscopy. J. Appl. Phys. 21 November 2013; 114 (19): 193509. https://doi.org/10.1063/1.4831957
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