The vibrational landscape of an ∼250 nm-radius single gold nanoparticle dropped on a silica substrate is imaged with an ultrafast pump-probe experiment in a transient reflectivity configuration. A movie of the picosecond dynamics of the nanoparticle is recorded over 20 ns. A spatially resolved analysis of the spectrum of the transient reflectivity is also achieved. In addition to the axial oscillation of the nanoparticle driven by the normal contact stiffness and to the breathing mode of the nanoparticle, ultrafast microscopy allows us to reveal higher order acoustic eigenmodes otherwise hidden by the noise in single point measurements. These results are confirmed by calculations of the acoustic eigenfrequencies of the nanoparticle. The shear component of the particle surface displacement associated with the higher order modes is of strong interest for probing the elasticity of the surrounding medium in the GHz to THz range.
Skip Nav Destination
Article navigation
4 March 2019
Research Article|
March 08 2019
Ultrafast microscopy of the vibrational landscape of a single nanoparticle
Yannick Guillet
;
Yannick Guillet
a)
1
Univ. Bordeaux, I2M, UMR 5295
, F-33400 Talence, France
2
CNRS, I2M, UMR 5295
, F-33400 Talence, France
Search for other works by this author on:
Allaoua Abbas;
Allaoua Abbas
b)
1
Univ. Bordeaux, I2M, UMR 5295
, F-33400 Talence, France
2
CNRS, I2M, UMR 5295
, F-33400 Talence, France
Search for other works by this author on:
Serge Ravaine
;
Serge Ravaine
3CNRS,
Univ. Bordeaux
, CRPP, UMR 5031, F-33600 Pessac, France
Search for other works by this author on:
Bertrand Audoin
Bertrand Audoin
1
Univ. Bordeaux, I2M, UMR 5295
, F-33400 Talence, France
2
CNRS, I2M, UMR 5295
, F-33400 Talence, France
Search for other works by this author on:
a)
Electronic mail: yannick.guillet@u-bordeaux.fr
b)
Present address: Neta, Rue François Mitterand, F-33400 Talence, France.
Appl. Phys. Lett. 114, 091904 (2019)
Article history
Received:
December 10 2018
Accepted:
February 22 2019
Citation
Yannick Guillet, Allaoua Abbas, Serge Ravaine, Bertrand Audoin; Ultrafast microscopy of the vibrational landscape of a single nanoparticle. Appl. Phys. Lett. 4 March 2019; 114 (9): 091904. https://doi.org/10.1063/1.5085157
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00