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Related Experiment Video

Updated: Jul 4, 2026

Creating Two-Dimensional Patterned Substrates for Protein and Cell Confinement
08:36

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Published on: September 6, 2011

Towards crossbar nanoarray structure via microcontact printing.

Yamini Yadav1, SudhaPrasanna Kumar Padigi, Shalini Prasad

  • 1Department of Electrical and Computer Engineering, Portland State University, Post Office Box 751, Portland, OR 97207-0751, USA.

Journal of Nanoscience and Nanotechnology
|June 25, 2008
PubMed
Summary
This summary is machine-generated.

Researchers developed a method to pattern multiwalled carbon nanotube (MWCNT) arrays for creating junctions. This technique uses microcontact printing with PDMS molds to build addressable nanodevices for integrated circuits.

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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

Published on: June 12, 2018

Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrical Engineering

Background:

  • Fabricating complex nanostructures is crucial for advanced electronic devices.
  • Controlling the precise arrangement of nanomaterials like carbon nanotubes is challenging.
  • Developing scalable methods for creating functional nanocircuits is an active area of research.

Purpose of the Study:

  • To demonstrate a method for patterning multiwalled carbon nanotube (MWCNT) arrays in symmetric patterns to form junctions.
  • To create addressable crossbar nanodevices using MWCNTs.
  • To establish building blocks for highly integrated device arrays.

Main Methods:

  • Utilized microcontact printing with poly-dimethylsiloxane (PDMS) molds to create relief structures.
  • Patterned MWCNTs in aqueous suspension onto silicon microelectrode substrates with gold electrodes.
  • Employed a dual alignment and stamping process, inking PDMS molds with p-type and n-type MWCNT suspensions.
  • Achieved parallel alignment of MWCNTs through mold geometry.

Main Results:

  • Successfully fabricated micrometer-scale relief structures for controlled MWCNT transfer.
  • Formed grid-like arrays of MWCNTs, resulting in crossbar junction structures.
  • Demonstrated the functionality of individual junctions as addressable crossbar nanodevices.
  • Verified circuit functionality through current-voltage (I-V) characteristic measurements.

Conclusions:

  • The developed microcontact printing method enables controlled patterning of MWCNT arrays.
  • This technique facilitates the creation of high-density crossbar circuit patterns.
  • The fabricated structures serve as essential building blocks for highly integrated nanodevice arrays.