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Related Experiment Video

Updated: Jun 16, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Direct patterning of CdSe quantum dots into sub-100 nm structures.

Meredith J Hampton1, Joseph L Templeton, Joseph M DeSimone

  • 1Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|January 28, 2010
PubMed
Summary

Ordered arrays of cadmium selenide (CdSe) quantum dots were fabricated on electrodes using the pattern replication in nonwetting templates (PRINT) process. This method successfully created nanometer-scale diffraction gratings with CdSe quantum dots.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Quantum Dot Research

Background:

  • Ordered arrays of nanomaterials are crucial for advanced electronic and optical devices.
  • Fabricating precise, large-scale nanostructures with quantum dots presents significant challenges.

Purpose of the Study:

  • To develop a scalable method for creating ordered, two-dimensional cadmium selenide (CdSe) quantum dot (QD) arrays.
  • To demonstrate the fabrication of nanometer-scale diffraction gratings using CdSe QDs.

Main Methods:

  • Utilized the pattern replication in nonwetting templates (PRINT) technique.
  • Employed perfluoropolyether (PFPE) elastomeric molds for solvent-tolerant patterning.
  • Patterned CdSe QDs (2.7 nm diameter, pyridine ligand) in 4-picoline solution onto indium-doped tin oxide (ITO) electrodes.

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Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
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Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
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Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

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Last Updated: Jun 16, 2026

Compact Quantum Dots for Single-molecule Imaging
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Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals

Published on: December 11, 2013

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Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

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Main Results:

  • Successfully fabricated ordered, two-dimensional CdSe QD arrays on ITO electrodes.
  • Achieved nanometer-scale diffraction gratings with high fidelity using CdSe QDs.
  • Demonstrated the compatibility of the PRINT process with CdSe QDs and organic solvents.

Conclusions:

  • The PRINT process is a viable and effective method for fabricating ordered CdSe QD arrays.
  • This technique enables the creation of nanostructured materials for potential applications in optics and electronics.
  • The solvent tolerance of PFPE molds is key to patterning sensitive nanomaterials like QDs.