Particle separation under the co-action of Brownian motion and optical force in near-field speckle patterns

H. T. Zhao, G. Zhang, L. K. Chin, H. Cai, J. F. Song, Z. C. Yang, E. P.H. Yap, W. Ser, D. L. Kwong, A. Q. Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Continuous separation of nano-sized molecules has great importance in biomedical applications. This paper represents a near-field optical approach to separate nanoparticles using speckle patterns. Near-field random light patterns (speckle pattern) are generated by the repeated coupling and interference of light in nano-waveguide arrays. The movements of 2-μm and 0.5-μm particles are studied under the co-action of Brownian motion and the exerted optical force. The experimental results show that the 2-μm particle has an average lateral displacement of 10 μm, which is considerably larger than that of the 0.5-μm particle. This method avoids the stringent optical systems and broadens the perspectives of optical manipulation in real-life applications.

Original languageEnglish
Title of host publication2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages696-699
Number of pages4
ISBN (Electronic)9781479989553
DOIs
Publication statusPublished - 5 Aug 2015
Externally publishedYes
Event18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 - Anchorage, United States
Duration: 21 Jun 201525 Jun 2015

Publication series

Name2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015

Conference

Conference18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Country/TerritoryUnited States
CityAnchorage
Period21/06/1525/06/15

Keywords

  • Brownian motion
  • near-field speckle pattern
  • optical force
  • Particle separation
  • waveguide array

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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