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

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号052003
ジャーナルApplied Physics Express
13
5
DOI
出版ステータス出版済み - 5 1 2020
外部発表はい

All Science Journal Classification (ASJC) codes

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

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