Quantization of Acoustic Modes in Dumbbell Nanoparticles

Wang, Zuyuan; Kim, Hojin; Secchi, Maria; Montagna, Maurizio; Furst, Eric; Djafari-Rouhani, Bahram; Fytas, George

Document type :

Article dans une revue scientifique

DOI :

10.1103/PhysRevLett.128.048003

Title :

Quantization of Acoustic Modes in Dumbbell Nanoparticles

Author(s) :

Wang, Zuyuan [Auteur]
Max Planck Institute for Polymer Research
Kim, Hojin [Auteur]
University of Delaware [Newark]
Secchi, Maria [Auteur]
University of Trento [Trento]
Montagna, Maurizio [Auteur]
University of Trento [Trento]
Furst, Eric [Auteur]
University of Delaware [Newark]
Djafari-Rouhani, Bahram [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Fytas, George [Auteur]
Max Planck Institute for Polymer Research

Journal title :

Physical Review Letters

Pages :

048003

Publisher :

American Physical Society

Publication date :

2022-01-26

ISSN :

0031-9007

English keyword(s) :

Light-matter interaction
Scattering theory

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

The vibrational eigenmodes of dumbbell-shaped polystyrene nanoparticles are recorded by Brillouinlight spectroscopy (BLS), and the full experimental spectra are calculated theoretically. Different fromspheres with a ...
Show more >The vibrational eigenmodes of dumbbell-shaped polystyrene nanoparticles are recorded by Brillouinlight spectroscopy (BLS), and the full experimental spectra are calculated theoretically. Different fromspheres with a degeneracy of (2l + 1), with l being the angular momentum quantum number, theeigenmodes of dumbbells are either singly or doubly degenerate owing to their axial symmetry. The BLSspectrum reveals a new, low-frequency peak, which is attributed to the out-of-phase vibration of the twolobes of the dumbbell. The quantization of acoustic modes in these molecule-shaped dumbbell particlesevolves from the primary colloidal spheres as the separation between the two lobes increasesShow less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :