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Title: Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses

Abstract

Some of the vibrational modes of crystalline organic polymers are known to be sensitive to the structural change from the crystalline phase to the amorphous phase, and vice versa. Using a mid-infrared (mid-IR) pulse from a free-electron laser as a probe, we demonstrate the time-resolved detection of structural change in crystalline polymer (polyethylene) films upon laser heating by a Q-switched Nd:YAG laser. Transmittance of the resonant mid-IR pulse almost instantaneously changes before and after the Nd:YAG laser pulse if its fluence is sufficient to induce the structural change in the film. The developed technique would be useful to study the time-dependent dynamics of the structural change in various materials.

Authors:
; ; ; ; ;  [1]
  1. Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan)
Publication Date:
OSTI Identifier:
22486376
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMORPHOUS STATE; DETECTION; FILMS; FREE ELECTRON LASERS; LASER-RADIATION HEATING; MATERIALS; NEODYMIUM LASERS; POLYETHYLENES; PROBES; PULSES; SWITCHES; TIME DEPENDENCE; TIME RESOLUTION

Citation Formats

Ageev, Eduard, Mizobata, Keisuke, Nakajima, Takashi, Zen, Heishun, Kii, Toshiteru, and Ohgaki, Hideaki. Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses. United States: N. p., 2015. Web. doi:10.1063/1.4927666.
Ageev, Eduard, Mizobata, Keisuke, Nakajima, Takashi, Zen, Heishun, Kii, Toshiteru, & Ohgaki, Hideaki. Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses. United States. https://doi.org/10.1063/1.4927666
Ageev, Eduard, Mizobata, Keisuke, Nakajima, Takashi, Zen, Heishun, Kii, Toshiteru, and Ohgaki, Hideaki. 2015. "Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses". United States. https://doi.org/10.1063/1.4927666.
@article{osti_22486376,
title = {Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses},
author = {Ageev, Eduard and Mizobata, Keisuke and Nakajima, Takashi and Zen, Heishun and Kii, Toshiteru and Ohgaki, Hideaki},
abstractNote = {Some of the vibrational modes of crystalline organic polymers are known to be sensitive to the structural change from the crystalline phase to the amorphous phase, and vice versa. Using a mid-infrared (mid-IR) pulse from a free-electron laser as a probe, we demonstrate the time-resolved detection of structural change in crystalline polymer (polyethylene) films upon laser heating by a Q-switched Nd:YAG laser. Transmittance of the resonant mid-IR pulse almost instantaneously changes before and after the Nd:YAG laser pulse if its fluence is sufficient to induce the structural change in the film. The developed technique would be useful to study the time-dependent dynamics of the structural change in various materials.},
doi = {10.1063/1.4927666},
url = {https://www.osti.gov/biblio/22486376}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 4,
volume = 107,
place = {United States},
year = {Mon Jul 27 00:00:00 EDT 2015},
month = {Mon Jul 27 00:00:00 EDT 2015}
}