TY - JOUR
T1 - Photo-induced meta-stable polar conformations in polystyrene microspheres revealed by time-resolved SHG microscopy
AU - Makihara, Kazuyuki
AU - Kaneta, Daiki
AU - Iwamura, Takumi
AU - Sugita, Atsushi
AU - Leproux, Philippe
AU - Couderc, Vincent
AU - Kano, Hideaki
N1 - Publisher Copyright:
© 2020 The Japan Society of Applied Physics.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - 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.
AB - 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.
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U2 - 10.35848/1882-0786/ab84be
DO - 10.35848/1882-0786/ab84be
M3 - Article
AN - SCOPUS:85085242433
SN - 1882-0778
VL - 13
JO - Applied Physics Express
JF - Applied Physics Express
IS - 5
M1 - 052003
ER -