What is it about?
Metal nanoparticles are excellent acoustic resonators and their vibrational spectroscopy has been widely investigated. However, the coupling between vibrational modes of different nanoparticles is less explored. For example, how the intervening medium affects the coupling strength is not known. Here we investigate how different polymers affect coupling in Au nanoplate-polymer-Au nanoplate sandwich structures.
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Why is it important?
We show that the acoustic phonon coupling strength is strongly determined by the spring constant of the polymer. A polymer with a larger spring constant will facilitate stronger phonon coupling between resonators.
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This page is a summary of: Polymer dependent acoustic mode coupling and Hooke’s law spring constants in stacked gold nanoplates, The Journal of Chemical Physics, October 2021, American Institute of Physics, DOI: 10.1063/5.0066661.
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