Photo-induced meta-stable polar conformations in polystyrene microspheres revealed by time-resolved SHG microscopy

Kazuyuki Makihara, Daiki Kaneta, Takumi Iwamura, Atsushi Sugita, Philippe Leproux, Vincent Couderc, Hideaki Kano

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Photo-induced second harmonic generation (SHG) was observed in centrosymmetric polystyrene (PS) microspheres using 1064 nm, sub-nanosecond laser-pulse irradiation. The SHG signal gradually increased upon stationary laser-pulse irradiation. After stopping the irradiation, the increased SHG signal disappeared in approximately 30 min. When the PS bead was irradiated by laser pulses again, the SHG signal reappeared with similar temporal behavior, which was attributed to the probable growth and contraction of meta-stable polar conformations of PS chain segments under periodic photo-thermal stimuli.

Original languageEnglish
Article number052003
JournalApplied Physics Express
Volume13
Issue number5
DOIs
Publication statusPublished - May 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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