Next Article in Journal
Acceleration Sensitivity in Bulk-Extensional Mode, Silicon-Based MEMS Oscillators
Next Article in Special Issue
Disposable Optical Stretcher Fabricated by Microinjection Moulding
Previous Article in Journal
Hard-Baked Photoresist as a Sacrificial Layer for Sub-180 °C Surface Micromachining Processes
Previous Article in Special Issue
Particle Manipulation by Optical Forces in Microfluidic Devices
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessReview

Controlled Mechanical Motions of Microparticles in Optical Tweezers

1 and 2,*
Institute of Laser and Intelligent Manufacturing Technology, South-Central University for Nationalities, Wuhan 430074, China
School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China
Author to whom correspondence should be addressed.
Micromachines 2018, 9(5), 232;
Received: 15 April 2018 / Revised: 5 May 2018 / Accepted: 9 May 2018 / Published: 12 May 2018
(This article belongs to the Special Issue Optical Manipulation of Cells: Strategies and Devices)
PDF [6123 KB, uploaded 12 May 2018]


Optical tweezers, formed by a highly focused laser beam, have intriguing applications in biology and physics. Inspired by molecular rotors, numerous optical beams and artificial particles have been proposed to build optical tweezers trapping microparticles, and extensive experiences have been learned towards constructing precise, stable, flexible and controllable micromachines. The mechanism of interaction between particles and localized light fields is quite different for different types of particles, such as metal particles, dielectric particles and Janus particles. In this article, we present a comprehensive overview of the latest development on the fundamental and application of optical trapping. The emphasis is placed on controllable mechanical motions of particles, including rotation, translation and their mutual coupling under the optical forces and torques created by a wide variety of optical tweezers operating on different particles. Finally, we conclude by proposing promising directions for future research. View Full-Text
Keywords: optical tweezers; mechanical motions; optical force; micromachine; Janus particles optical tweezers; mechanical motions; optical force; micromachine; Janus particles

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Liu, J.; Li, Z. Controlled Mechanical Motions of Microparticles in Optical Tweezers. Micromachines 2018, 9, 232.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top