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Updated: Jun 16, 2026

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Lithographically defined uniform worm-shaped polymeric nanoparticles.

L Tao1, X M Zhao, J M Gao

  • 1Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA.

Nanotechnology
|January 30, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers developed a new method to create uniform, worm-shaped nanoparticles using nanoimprint lithography. This technique offers precise control over nanoparticle shape and size for nanomedicine applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Precisely controlling nanoparticle shape is crucial for nanomedicine.
  • Existing methods like self-assembly lack uniformity and controllability.
  • Developing non-spherical nanoparticles with defined dimensions is a key challenge.

Purpose of the Study:

  • To develop a lithography-based method for producing uniform, worm-shaped polymeric nanoparticles.
  • To demonstrate the controlled fabrication of nano-worms with high aspect ratios.
  • To enable the application of precisely shaped nanoparticles in nanomedicine.

Main Methods:

  • Combined nanoimprint lithography and photolithography on a bi-layer polymer system.
  • Utilized a water-soluble sacrificial layer (poly(vinyl alcohol)) for nanoparticle release.

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Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique
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Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Published on: September 20, 2011

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
10:12

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles

Published on: January 7, 2019

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Last Updated: Jun 16, 2026

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique
06:47

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Published on: September 20, 2011

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
10:12

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles

Published on: January 7, 2019

  • Optimized process control including SU-8 curing and residue removal for successful fabrication.

    • Main Results:

    • Successfully fabricated uniform, worm-shaped polymeric nanoparticles in aqueous solution.
    • Achieved high length-to-width ratios (up to 75) for the nano-worms.
    • Demonstrated superior control over shape, size, and aspect ratio compared to self-assembly methods.

    Conclusions:

    • The developed lithography technique provides precise control over nano-worm fabrication.
    • Elimination of invasive plasma etching enhances biomaterial compatibility.
    • These uniform nano-worms are valuable tools for understanding shape-dependent nanoparticle behavior in nanomedicine.