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Related Experiment Video

Updated: Jun 14, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Vibronics and plasmonics based graphene sensors.

Norma L Rangel¹, Jorge M Seminario

¹Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, USA.

The Journal of Chemical Physics

|April 8, 2010

Summary

This study introduces a novel graphene ribbon sensor for detecting single molecules. The sensor translates molecular vibrations and potentials into measurable electronic signals with high sensitivity and selectivity.

Area of Science:

Materials Science
Nanotechnology
Chemical Sensing

Background:

Graphene ribbons offer unique electronic properties for sensing applications.
Developing highly sensitive and selective molecular sensors is crucial for various scientific fields.

Purpose of the Study:

To propose and demonstrate a novel sensor concept using graphene ribbons.
To leverage molecular vibrations and electrostatic potentials for signal transduction.

Main Methods:

Utilizing ab initio density functional methods for theoretical demonstration.
Employing the terahertz spectrum to characterize molecular adsorption.
Investigating the influence of molecular potentials on graphene plasmons.

Main Results:

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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

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Exploring Biomolecular Interaction Between the Molecular Chaperone Hsp90 and Its Client Protein Kinase Cdc37 using Field-Effect Biosensing Technology

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Successfully characterized molecular fingerprints via vibrational modes in the terahertz region.
Demonstrated that graphene ribbon plasmons are highly sensitive to approaching molecular potentials.
Established a transduction mechanism converting molecular signals into current-voltage data.

Conclusions:

Graphene ribbons can act as sensitive and selective sensors for single molecules.
The proposed sensor concept effectively converts molecular characteristics into electronic signals.
This technology holds potential for advanced molecular detection and analysis.