Single InAs Nanowire Hypersonic Acoustic Nanoresonator

Year: 2025

Authors: Colosimo A., Gandolfi M., Lascoux N., Crut A., Vialla F., Demontis V., Zannier V., Sorba L., Beltram F., Rossella F., Del Fatti N., Maioli P., Banfi F.

Autors Affiliation: Scuola Normale Super Pisa, NEST, I-56124 Pisa, Italy; Univ Claude Bernard Lyon 1, Inst Lumiere Matiere, CNRS, F-69622 Villeurbanne, France; CNR INO, I-25123 Brescia, Italy; Univ Brescia, Dept Informat Engn, I-25123 Brescia, Italy; Univ Cagliari, Dipartimento Fis, I-09042 Cagliari, Italy; CNR, Ist Nanosci, I-56127 Pisa, Italy; Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy; Inst Univ France IUF, F-75231 Paris 05, France.

Abstract: We report acoustic oscillations in suspended single InAs nanowire resonators at hypersonic frequencies, measured via all-optical time-resolved microscopy. Two distinct oscillations, attributed to the fundamental longitudinal extensional and radial breathing modes, are observed with frequencies reaching tens of GHz. The measured frequencies are in good agreement with finite element method simulations, validating the stiffness matrix for wurtzite InAs nanowires proposed in a recent work. This achievement is crucial for device development, enabling accurate nanoresonator modeling. The acoustic time attenuation rate and the reciprocal quality factor of the radial breathing mode are found to scale linearly with the fraction of nanowire length in contact with the substrate, indicating that extrinsic acoustic damping is the dominant attenuation mechanism in our experiments. This finding indicates that optimizing the clamping design should be more effective in further enhancing the quality factor of the nanoresonator than improving the crystal quality of the InAs nanowire. These results pave the way for the development of high-performance hypersonic semiconductor nanoresonators and optomechanical nanotransducers.

Journal/Review: JOURNAL OF PHYSICAL CHEMISTRY LETTERS

Volume: 16 (43)      Pages from: 11158  to: 11166

More Information: The authors acknowledge support from the French National Research Agency (ANR) under References ANR-20-CE30-0016 (ULTRASINGLE Project) and ANR-23-CE09-0004 (WAALRUS). F.R. acknowledges support from FAR 2024 Progetti interdisciplinari – Linea UNIMORE NT-ROBOT (CUP E93C24001920005), INFN project MANIFOLD, National Recovery and Resilience Plan (PNRR), Mission 04, Component 2, Investment 1.5 NextGenerationEU, Call for tender No. 3277 dated December 30, 2021 (Award Number: 0001052 dated June 23, 2022).
KeyWords: Vibrations
DOI: 10.1021/acs.jpclett.5c02806