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Updated: Dec 8, 2025

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Azopolymer-Based Nanoimprint Lithography: Recent Developments in Methodology and Applications.

Bowen Yang1, Mingming Yu2, Haifeng Yu1

  • 1Department of Material Science and Engineering, College of Engineering and Key Laboratory of Polymer Chemistry, and Physics of Ministry of Education, Peking University, Beijing, 100871, P. R. China.

Chempluschem
|September 22, 2020
PubMed
Summary

Azopolymer-based nanoimprint lithography (NIL) offers a cost-effective and rapid method for creating nanoscale patterns on soft polymers. This review highlights advancements in azopolymer materials and their applications in optics and micro-actuators.

Keywords:
azobenzeneliquid crystal polymersnanofabricationnanoimprint lithographyphotoswitching

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Soft polymeric surface nanofabrication is crucial for applications like chip manufacturing, microfluidics, solar cells, and anticounterfeiting.
  • Nanoimprint lithography (NIL) is a prominent technique due to its cost-effectiveness and speed.

Purpose of the Study:

  • To provide an overview of azopolymer-based nanoimprint lithography.
  • To discuss advancements in azopolymer materials and their applications.
  • To highlight challenges in the field.

Main Methods:

  • Development of azopolymers exhibiting photofluidization and photoswitchable glass transition temperatures.
  • Utilizing these azopolymers in various nanoimprint lithography processes.

Main Results:

  • Azopolymers demonstrate versatile photoresponsive characteristics via azobenzene chromophore photoisomerization.
  • Methodological advancements in NIL facilitated by azopolymer properties.
  • On-demand NIL methods enable applications in optical templating, nanopattern manipulation, and microactuators.

Conclusions:

  • Azopolymer-based NIL presents a powerful platform for advanced nanofabrication.
  • The unique photoresponsive properties of azopolymers drive innovation in material development and applications.
  • Further research is needed to address existing challenges in the field.