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Related Experiment Video

Updated: Jun 16, 2026

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

Direct patterning of intrinsically electron beam sensitive polymer brushes.

Abhinav Rastogi1, Marvin Y Paik, Manabu Tanaka

  • 1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.

ACS Nano
|February 4, 2010
PubMed
Summary

Directly pattern polymer brushes using electron beam lithography for nano- and microscale devices. This single-step method simplifies fabrication and achieves high resolution down to 50 nm lines.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Patterned polymer brushes are crucial for nano- and microscale devices.
  • Traditional patterning methods are complex and multistep.

Purpose of the Study:

  • To report a single-step direct patterning method for polymer brushes using electron beam (e-beam) lithography.
  • To investigate the sensitivity of various methacrylate polymer brushes to e-beam patterning.

Main Methods:

  • Surface-initiated atom transfer radical polymerization to grow polymer brushes (PMMA, PHEMA, PIBMA, PNPMA, PTFEMA) on silicon substrates.
  • Electron beam (e-beam) lithography for direct nanopatterning.
  • Characterization using ellipsometry, contact angle goniometry, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS).

Main Results:

  • Successful direct nanopatterning of PMMA, PHEMA, PIBMA, PNPMA, and PTFEMA brushes achieved in a single step.
  • High-resolution patterns with lines as small as 50 nm were obtained.
  • Polymer brush sensitivity to e-beam patterning was correlated with the structure and chemical functionality (beta-position to carbonyl group) of the methacrylate polymers.

Conclusions:

  • Direct e-beam lithography offers a simplified, single-step approach for fabricating nanostructured polymer brush surfaces.
  • The sensitivity of polymer brushes to e-beam patterning is tunable by modifying polymer structure, enabling precise control over nanopattern fabrication.