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Updated: Jun 16, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

Tracking a molecular motor with a nanoscale optical encoder.

Charles E Wickersham¹, Kevin J Cash, Shawn H Pfeil

¹Department of Physics, University of California, Santa Barbara, California 93106, USA.

|February 4, 2010

Summary

Researchers developed a single-molecule optical encoder using Forster resonance energy transfer (FRET) and DNA nanotechnology. This innovation achieves nanometer-scale precision for molecular motor motion, enabling new insights into nanoscale dynamics.

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Area of Science:

Biophysics
Nanotechnology
Molecular Biology

Background:

Macroscopic optical encoders measure motion using periodic signals.
Single-molecule studies require high-resolution measurement techniques.

Purpose of the Study:

To implement optical encoder principles at the single-molecule level.
To achieve nanometer-scale resolution for molecular motor movement.

Main Methods:

Utilized Forster resonance energy transfer (FRET) for signal generation.
Incorporated acceptor dye molecules into self-assembling DNA structures.
Tracked donor-labeled molecular motor motion.

Main Results:

Generated a periodic signal from molecular motor motion.

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Last Updated: Jun 16, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

Biophysical Characterization of Flagellar Motor Functions

Biophysical Characterization of Flagellar Motor Functions

Published on: January 18, 2017

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Achieved nanometer-scale resolution.

Demonstrated millisecond-scale measurement capabilities.

Conclusions:

FRET-based optical encoders are feasible for single-molecule measurements.
This technique provides precise tracking of molecular motors.
Enables new avenues for studying nanoscale dynamics.