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Updated: May 23, 2026

A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions
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Label free colorimetric biosensing using nanoparticles.

Nidhi Nath1, Ashutosh Chilkoti

  • 1Department of Biomedical Engineering, Duke University, Durham, North Carolina, USA.

Journal of Fluorescence
|December 25, 2004
PubMed
Summary
This summary is machine-generated.

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Noble metal nanoparticle biosensors change color to detect biomolecules. This review covers fabrication, configurations, and future commercialization challenges for these colorimetric sensors.

Area of Science:

  • Nanotechnology
  • Biomedical Engineering
  • Analytical Chemistry

Background:

  • Biosensors offer sensitive detection of biomolecules.
  • Noble metal nanoparticles exhibit unique optical properties.
  • Colorimetric detection provides a simple readout method.

Purpose of the Study:

  • To review colorimetric biosensors utilizing noble metal nanoparticles.
  • To discuss fabrication techniques and sensor designs.
  • To outline future commercialization prospects and challenges.

Main Methods:

  • Literature review of relevant scientific publications.
  • Analysis of sensor fabrication methods (e.g., synthesis, surface functionalization).
  • Evaluation of different sensor configurations and their performance metrics.

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Last Updated: May 23, 2026

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08:23

Design and Development of Aptamer–Gold Nanoparticle Based Colorimetric Assays for In-the-field Applications

Published on: June 23, 2016

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Main Results:

  • Noble metal nanoparticles undergo distinct color changes upon specific biomolecular binding.
  • Various fabrication methods offer different advantages in terms of cost, sensitivity, and scalability.
  • Sensor configurations impact detection limits, response time, and multiplexing capabilities.

Conclusions:

  • Colorimetric nanoparticle biosensors show significant promise for point-of-care diagnostics.
  • Overcoming challenges in reproducibility, stability, and large-scale manufacturing is crucial for commercialization.
  • Further research is needed to translate laboratory findings into robust commercial products.