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Updated: Mar 25, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

Directed block copolymer self-assembly implemented via surface-embedded electrets.

Mei-Ling Wu^1,2,3, Dong Wang^1,2, Li-Jun Wan^1,2

¹Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China.

Nature Communications

|February 16, 2016

Summary

This summary is machine-generated.

Localized surface electrets direct block copolymer (BCP) self-assembly for high-resolution nanopatterning. This non-destructive method overcomes key challenges in BCP nanolithography, enabling diverse nanostructure fabrication.

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Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers

Published on: June 30, 2018

Area of Science:

Materials Science
Nanoscience
Lithography

Background:

Conventional photolithography faces feature size limitations.
Block copolymer (BCP) nanolithography offers a complementary approach.
Directed self-assembly of BCP thin films is crucial for nanolithography applications.

Purpose of the Study:

To demonstrate a novel method for directing BCP self-assembly using localized surface electrets.
To achieve controlled orientation and localized patterning of BCP nanostructures.
To overcome challenges in practical BCP nanolithography applications.

Main Methods:

Creating localized surface electrets via electron-beam irradiation.
Utilizing the built-in electric field from electrets to orient BCP microdomains.
Integrating electret patterning with mask-based techniques or electron-beam direct-writing.

Main Results:

Achieved directed BCP nanopatterning on localized surface electrets.
Demonstrated non-destructive fabrication of diverse nanostructures.
Fabricated microscale arbitrary lateral patterns down to single BCP cylinder nanopatterns.
Induced perpendicular orientation of BCP film microdomains.

Conclusions:

Localized surface electrets provide a simple, effective, and non-destructive means for BCP nanolithography.
This electret-directed self-assembly enables high-resolution patterning.
Offers a promising alternative for advanced nanolithography applications.