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Related Experiment Video

Updated: Jun 27, 2026

Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
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Published on: July 22, 2013

Atomic-scale mass sensing using carbon nanotube resonators.

Hsin-Ying Chiu1, Peter Hung, Henk W C Postma

  • 1Department of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.

Nano Letters
|December 5, 2008
PubMed
Summary

Researchers developed atomic scale mass sensing using carbon nanotube nanomechanical resonators. This technology enables precise measurement of atomic and nanotube masses, paving the way for advanced on-chip analysis.

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Last Updated: Jun 27, 2026

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Analytical Chemistry

Background:

  • Ultraminiaturized mass spectrometers are crucial for environmental monitoring, exploration, and drug development.
  • Carbon nanotube (CNT) nanomechanical resonators offer potential for highly sensitive mass detection.

Purpose of the Study:

  • To demonstrate atomic scale mass sensing using CNT nanomechanical resonators.
  • To leverage single-electron transistor properties of CNTs for self-detection of mechanical vibrations.

Main Methods:

  • Fabrication of doubly clamped suspended carbon nanotube nanomechanical resonators.
  • Utilizing the single-electron transistor (SET) properties of CNTs for vibration detection.
  • Measuring shifts in the resonance frequency of the CNTs to determine mass.

Main Results:

  • Successful atomic scale mass sensing was achieved.
  • The mass of individual atoms and the CNT itself were accurately determined.
  • High sensitivity in mass detection was demonstrated.

Conclusions:

  • CNT nanomechanical resonators with SET properties provide a robust platform for atomic scale mass sensing.
  • This technology holds promise for on-chip detection, analysis, and identification of compounds.
  • Potential applications span environmental monitoring, exploration, and pharmaceutical research.