Nanoparticle sorting in silicon waveguide arrays

Nanoparticle sorting in silicon waveguide arrays

This paper presents the optical fractionation of nanoparticles in silicon waveguide arrays. The optical lattice is generated by evanescent coupling in silicon waveguide arrays. The hotspot size is tunable by changing the refractive index of surrounding liquids. In the experiment, 0.2-μm and 0.5-μm p...

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Bibliographic Details
Main Authors: Zhao, Haitao, Zhang, Yi, Chin, Lip Ket, Yap, Peng Huat, Wang, Kuan, Ser, Wee, Liu, Ai Qun
Other Authors: Dholakia, Kishan
Format: Article
Language:English
Published: 2019
Subjects:
Optical Fractionation
Engineering::Electrical and electronic engineering
Near-field
Online Access:https://hdl.handle.net/10356/106406
http://hdl.handle.net/10220/49626
http://dx.doi.org/10.1117/12.2273251
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Institution: Nanyang Technological University
Language: English
Description
Summary:This paper presents the optical fractionation of nanoparticles in silicon waveguide arrays. The optical lattice is generated by evanescent coupling in silicon waveguide arrays. The hotspot size is tunable by changing the refractive index of surrounding liquids. In the experiment, 0.2-μm and 0.5-μm particles are separated with a recovery rate of 95.76%. This near-field approach is a promising candidate for manipulating nanoscale biomolecules and is anticipated to benefit the biomedical applications such as exosome purification, DNA optical mapping, cell-cell interaction, etc.

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