Enhanced Optical Manipulation of Cells Using Antireflection Coated Microparticles

Derek Craig, Alison McDonald, Michael Mazilu, Helen Rendall, Frank Gunn-Moore, Kishan Dholakia

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We demonstrate the use of antireflection (AR) coated microparticles for the enhanced optical manipulation of cells. Specifically, we incubate CHO-K1, HL60, and NMuMG cell lines with AR-coated titania microparticles and subsequently performed drag force measurements using optical trapping. Direct comparisons were performed between native, polystyrene microparticle and AR microparticle tagged cells. The optical trapping efficiency was recorded by measuring the Q value in a drag force experiment. CHO-K1 cells incubated with AR microparticles show an increase in the Q value of nearly 220% versus native cells. With the inclusion of AR microparticles, cell velocities exceeding 50 μm/s were recorded for only 33 mW of laser trapping power. Cell viability was confirmed with fluorescent dyes and cells expressing a fluorescent ubiquitination-based cell cycle protein (FUCCI), which verified no disruption to the cell cycle in the presence of AR microparticles.

Original languageEnglish
Pages (from-to)1403-1409
Number of pages7
JournalACS Photonics
Volume2
Issue number10
DOIs
Publication statusPublished - 2015 Oct 21

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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