Related Experiment Video

Updated: Apr 5, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

Direct Observation of Gigahertz Coherent Guided Acoustic Phonons in Free-Standing Single Copper Nanowires

Cyril Jean^1,2, Laurent Belliard^1,2, Thomas W Cornelius³

¹†Sorbonne Universités, UPMC Univ Paris 06, UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France.

The Journal of Physical Chemistry Letters

|August 18, 2015

Abstract:

We report on gigahertz acoustic phonon waveguiding in free-standing single copper nanowires studied by femtosecond transient reflectivity measurements. The results are discussed on the basis of the semianalytical resolution of the Pochhammer and Chree equation. The spreading of the generated Gaussian wave packet of two different modes is derived analytically and compared with the observed oscillations of the sample reflectivity. These experiments provide a unique way to independently obtain geometrical and material characterization. This direct observation of coherent guided acoustic phonons in a single nano-object is also the first step toward nanolateral size acoustic transducer and comprehensive studies of the thermal properties of nanowires.

Keywords:

acoustic waveguide asoustic vibration in nano-object copper nanowire guided phonons time-resolved spectroscopy

More Related Videos

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Published on: January 28, 2021

Related Concept Videos

Standing Waves in a Cavity

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

Theory of Metallic Conduction

Theory of Metallic Conduction

The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...

Articles linked to this work by shared authors, journal, and citation graph.

Characteristics of Recurrent Atrial Arrhythmias and Lesion Assessment Late After Pulsed Field Ablation of Atrial Fibrillation.

Circulation. Arrhythmia and electrophysiology·2026

TRXR2, a thioredoxin reductase-encoding gene, contributes to protection against the oxidative stress and virulence in Scedosporium apiospermum.

Microbial pathogenesis·2026

Strain Evolution in Nanocrystals under High Pressure Tracked with Bragg Coherent X-ray Diffraction Imaging.

Nano letters·2026

Structural and optical responses of molecular solids to swift heavy ion irradiation under high pressures.

Physical chemistry chemical physics : PCCP·2026

Quantitative Modeling of Nanopore Formation in 2D MoS2 by Swift Heavy-Ion Irradiation.

ACS applied materials & interfaces·2026

Expanding the synergy between MOFs and solid-state nanochannels: robust anchoring of enzymes for iontronic biosensing.

Nanoscale·2025

See all related articles