Journal article

Acoustic Vibrations of Al Nanocrystals: Size, Shape, and Crystallinity Revealed by Single-Particle Transient Extinction Spectroscopy

Behnaz Ostovar, Man-Nung Su, David Renard, Benjamin D Clark, Pratiksha D Dongare, Chayan Dutta, Niklas Gross, John E Sader, Christy F Landes, Wei-Shun Chang, Naomi J Halas, Stephan Link

The Journal of Physical Chemistry A | AMER CHEMICAL SOC | Published : 2020

Abstract

Acoustic vibrations in plasmonic nanoparticles, monitored by an all-optical means, have attracted significant increasing interest because they provide unique insight into the mechanical properties of these metallic nanostructures. Al nanostructures are a recently emerging alternative to noble metal nanoparticles, because their broad wavelength tunability and high natural abundance make them ideal for many potential applications. Here, we investigate the acoustic vibrations of individual Al nanocrystals using a combination of electron microscopy and single-particle transient extinction spectroscopy, made possible with a low-pulse energy, high sensitivity, and probe-wavelength-tunable, single-..

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University of Melbourne Researchers

Grants

Awarded by Robert A. Welch Foundation


Awarded by Air Force Office of Scientific Research via the Department of Defense Multidisciplinary University Research Initiative


Awarded by National Science Foundation


Awarded by Australian Research Council Centre of Excellence in Exciton Science


Funding Acknowledgements

We acknowledge financial support from the Robert A. Welch Foundation (C-1787 to C.F.L., C-1664 to S.L., and C-1220 to N.J.H.), the Air Force Office of Scientific Research via the Department of Defense Multidisciplinary University Research Initiative, under Award FA9550-15-1-0022 to N.J.H. and S.L., and the National Science Foundation (CHE-1808382 to C.F.L and ECCS-1608917 to S.L.). J.E.S. gratefully acknowledges support from the Australian Research Council Centre of Excellence in Exciton Science (Grant No. CE170100026) and the Australian Research Council Grants Scheme. This work was conducted in part using resources of the Shared Equipment Authority at Rice University.