Determination of Nanoscale Mechanical Properties of Polymers via Plasmonic Nanoantennas

Hilario D. Boggiano, Rodrigo Berté, Alberto F. Scarpettini, Alberto F. Scarpettini, Emiliano Cortés, Stefan A. Maier, Andrea V. Bragas

Research output: Contribution to journalArticleResearchpeer-review

21 Citations (Scopus)

Abstract

Nanotechnology and the consequent emergence of miniaturized devices are driving the need to improve our understanding of the mechanical properties of a myriad of materials. Here we focus on amorphous polymeric materials and introduce a new way to determine the nanoscale mechanical response of polymeric thin films in the GHz range, using ultrafast optical means. Coupling of the films to plasmonic nanoantennas excited at their vibrational eigenfrequencies allows the extraction of the values of the mechanical moduli as well as the estimation of the glass transition temperature via time-domain measurements, here demonstrated for PMMA films. This nanoscale method can be extended to the determination of mechanical and elastic properties of a wide range of spatially strongly confined materials.

Original languageEnglish
Pages (from-to)1403-1409
Number of pages7
JournalACS Photonics
Volume7
Issue number6
DOIs
Publication statusPublished - 17 Jun 2020
Externally publishedYes

Keywords

  • nanoantennas
  • nanomechanics
  • plasmonics
  • polymers
  • ultrafast optics

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