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Updated: Apr 16, 2026

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

A light-driven supramolecular nanowire actuator.

Junho Lee¹, Seungwhan Oh, Jaeyeon Pyo

¹X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea. jhje@postech.ac.kr.

|March 21, 2015

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Researchers developed a novel photomechanical actuator using azobenzene nanowires. These actuators exhibit reversible bending upon light exposure and can remotely manipulate micro-particles wirelessly.

Area of Science:

Materials Science
Supramolecular Chemistry
Nanotechnology

Background:

Azobenzene derivatives are known photoresponsive molecules.
Supramolecular self-assembly offers routes to ordered nanostructures.
Photomechanical actuators convert light energy into mechanical motion.

Purpose of the Study:

To develop a single-nanowire photomechanical actuator.
To investigate the photoinduced bending behavior and kinetics.
To demonstrate wireless manipulation of micro-particles using the actuator.

Main Methods:

Direct writing method for fabricating supramolecular nanowires.
Utilizing azobenzene-containing 1,3,5-tricarboxamide derivatives.
Characterization of photoinduced reversible bending and kinetic analysis.

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Last Updated: Apr 16, 2026

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

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

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Main Results:

Successful fabrication of a single photomechanical supramolecular nanowire actuator.
Demonstrated photoinduced reversible bending in individual nanowires.
Observed first-order kinetics for bending, linked to azobenzene photoisomerization.
Developed wireless photomechanical nanowire tweezers for micro-particle manipulation.

Conclusions:

The developed nanowire actuator is a promising material for light-driven mechanical actuation.
The study highlights the potential of supramolecular self-assembly for creating advanced functional nanomaterials.
Wireless manipulation capabilities open avenues for micro-robotics and precision engineering.