Tomographic active optical trapping of arbitrarily shaped objects byexploiting 3D refractive index maps

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486322.do
DOI
10.1038/ncomms15340
Title
Tomographic active optical trapping of arbitrarily shaped objects byexploiting 3D refractive index maps
Description
This work was supported by KAIST, BK21 + program, Tomocube, and theNational Research Foundation of Korea (2015R1A3A2066550,2014M3C1A3052567, 2014K1A3A1A09063027). We thank Mr Doyeon Kim forpreparing HT-29 cells.
abstract
Optical trapping can manipulate the three-dimensional (3D) motion of spherical particles based on the simple prediction of optical forces and the responding motion of samples. However, controlling the 3D behaviour of non-spherical particles with arbitrary orientations is extremely challenging, due to experimental difficulties and extensive computations. Here, we achieve the real-time optical control of arbitrarily shaped particles by combining the wavefront shaping of a trapping beam and measurements of the 3D refractive index distribution of samples. Engineering the 3D light field distribution of a trapping beam based on the measured 3D refractive index map of samples generates a light mould, which can manipulate colloidal and biological samples with arbitrary orientations and/or shapes. The present method provides stable control of the orientation and assembly of arbitrarily shaped particles without knowing a priori information about the sample geometry. The proposed method can be directly applied in biophotonics and soft matter physics.
provenance
Made available in Cube on 2018-09-28T16:04:29Z (GMT). No. of bitstreams: 0
language
English
author
Kim, Kyoohyun
Park, YongKeun
accessioned
2018-09-28T16:04:29Z
available
2018-09-28T16:04:29Z
issued
2017
citation
NATURE COMMUNICATIONS(8)
issn
2041-1723
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486322.do
Funder
미래창조과학부
Funding Program
국가간협력기반조성
Project ID
1711047804
Jurisdiction
Rep.of Korea
Project Name
Development of portable holographic microscope for the diagnosis of pathogenetic materials
rights
openAccess
type
article


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