title: Two dimensional interferometric optical trapping of multiple particles and Escherichia coli bacterial cells using a lensed multicore fiber.
abstract: Two dimensional interferometric trapping of multiple microspheres and Escherichia coli has been demonstrated using a multicore fiber lensed with an electric arc fusion splicer. Light was coupled evenly into all four cores using a diffractive optical element. The visibility of the fringes and also the appearance of the lattice can be altered by rotating a half wave-plate. As a result the particles can be manipulated from one dimensional trapping to two dimensional trapping or a variety of different two dimensional arrangements. The ability to align bacterial populations has potential application for quorum sensing, floc and biofilm and, metabolic co-operation studies.
authors.affiliation: Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, UK. ab461@hw.ac.uk
authors.forename: Ashleigh L
authors.initials: AL
authors.lastname: Barron
authors.forename: Ajoy K
authors.initials: AK
authors.lastname: Kar
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Aspray
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Waddie
authors.forename: Mohammad R
authors.initials: MR
authors.lastname: Taghizadeh
authors.forename: Henry T
authors.initials: HT
authors.lastname: Bookey
mesh_terms: D004926:Escherichia coli / Q000166:cytology*; D007368:Interferometry / Q000379:methods*; D007909:Lenses; D008863:Microspheres; D055100:Optical Fibers; D052898:Optical Tweezers; D012399:Rotation