Measurement of interparticle force between nematic colloids

Yasuyuki Kimura, Kuniyoshi Izaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Micro-sized colloidal particles dispersed in nematic liquid crystal become topological defects in uniform orientation of liquid crystal. Since they increase the elastic energy of the liquid crystal, a long-ranged anisotropic interaction is induced between them. In this study, we reported the interparticle force measured by various methods utilizing optical tweezers. The interparticle force depends on the type of particle-defect pair and its dependence on the interparticle distance is in agreement with the theoretical prediction using electrostatic analogy. This anisotropic force enables us to construct characteristic clusters, which cannot be realized in conventional water-based colloidal dispersions. We made some novel colloidal assemblies in two dimensions by utilizing optical tweezers to demonstrate the availability of the anisotropic force in nematic colloids.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation XI
EditorsGabriel C. Spalding, Kishan Dholakia
PublisherSPIE
ISBN (Electronic)9781628411911
DOIs
Publication statusPublished - Jan 1 2014
EventOptical Trapping and Optical Micromanipulation XI - San Diego, United States
Duration: Aug 17 2014Aug 21 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9164
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherOptical Trapping and Optical Micromanipulation XI
CountryUnited States
CitySan Diego
Period8/17/148/21/14

Fingerprint

Optical tweezers
Liquid Crystals
Colloids
Liquid crystals
colloids
Optical Tweezers
Defects
Nematic liquid crystals
liquid crystals
Dispersions
Crystal orientation
Liquid Crystal
Particles (particulate matter)
Electrostatics
Availability
Topological Defects
Water
defects
Nematic Liquid Crystal
assemblies

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kimura, Y., & Izaki, K. (2014). Measurement of interparticle force between nematic colloids. In G. C. Spalding, & K. Dholakia (Eds.), Optical Trapping and Optical Micromanipulation XI [91640O] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9164). SPIE. https://doi.org/10.1117/12.2064322

Measurement of interparticle force between nematic colloids. / Kimura, Yasuyuki; Izaki, Kuniyoshi.

Optical Trapping and Optical Micromanipulation XI. ed. / Gabriel C. Spalding; Kishan Dholakia. SPIE, 2014. 91640O (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9164).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kimura, Y & Izaki, K 2014, Measurement of interparticle force between nematic colloids. in GC Spalding & K Dholakia (eds), Optical Trapping and Optical Micromanipulation XI., 91640O, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9164, SPIE, Optical Trapping and Optical Micromanipulation XI, San Diego, United States, 8/17/14. https://doi.org/10.1117/12.2064322
Kimura Y, Izaki K. Measurement of interparticle force between nematic colloids. In Spalding GC, Dholakia K, editors, Optical Trapping and Optical Micromanipulation XI. SPIE. 2014. 91640O. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2064322
Kimura, Yasuyuki ; Izaki, Kuniyoshi. / Measurement of interparticle force between nematic colloids. Optical Trapping and Optical Micromanipulation XI. editor / Gabriel C. Spalding ; Kishan Dholakia. SPIE, 2014. (Proceedings of SPIE - The International Society for Optical Engineering).
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