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Related Experiment Video

Updated: Jul 2, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Two-photon induced polymer nanomovement.

Hidekazu Ishitobi¹, Satoru Shoji, Tsunemi Hiramatsu

¹Nanophotonics Laboratory, RIKEN The Institute of Physical and Chemical Research, Wako, Saitama, Japan

|September 6, 2008

Summary

This summary is machine-generated.

This study demonstrates two-photon induced plastic surface deformation in azo polymer films. Intense laser irradiation causes nanomovement via photoselective isomerization, dependent on light polarization and wavelength.

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Area of Science:

Polymer Science
Optics
Materials Science

Background:

Azo polymers exhibit photoresponsive behavior due to trans-cis isomerization.
Surface deformation in polymers can be induced by light, but two-photon effects are less explored.

Purpose of the Study:

To report the first instance of two-photon induced plastic surface deformation in solid polymer films.
To investigate the mechanism of photofluidic polymer nanomovement using intense laser irradiation.

Main Methods:

Exposure of azo polymer films to intense 920 nm laser irradiation.
Analysis of polarization-dependent and wavelength-dependent surface deformations.
Investigation of light intensity gradients and spot positioning effects.

Main Results:

Observed plastic surface deformation in azo polymer films.
Demonstrated photofluidic polymer nanomovement driven by two-photon trans-cis isomerization.
Deformation is dependent on laser wavelength, polarization, and light intensity gradients.

Conclusions:

Two-photon absorption is a viable mechanism for inducing plastic deformation in azo polymers.
Photoselective isomerization under intense irradiation leads to controlled polymer surface modification.
Precise control over nanomovement is achievable by manipulating laser parameters.