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Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting

Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting
Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting
The high-refractive index contrast (Delta n ~0.65 as compared to silicon oxide) of Tantalum pentoxide (Ta2O5) waveguide allows strong confinement of light in waveguides of sub-micron thickness (200 nm). This enhances the intensity in the evanescent field, which we have employed for efficient propelling of micro-particles. The feasibility of opto-fluidics sorting of different sized micro-particles based on their varying optical propulsion velocity is suggested. Optical propulsion of fixed red blood cells (RBC) with velocity higher than previously obtained is also reported. The optical propulsion velocities of RBC in isotonic solution (0.25 M sucrose) and water have been compared.
Ahluwalia, Balpreet Singh
f6dfb1bb-760f-4a7e-9050-d66de72348e0
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53
Subramanian, Ananth Z.
634f1b3f-45a7-48d8-817c-be88ff70d235
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Chen, Jie
2e0f920b-5a22-411c-826a-42a9b1677fd9
Chen, Xuyuan
6462a25a-e468-4c27-aeb4-350f882c94f3
Ahluwalia, Balpreet Singh
f6dfb1bb-760f-4a7e-9050-d66de72348e0
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53
Subramanian, Ananth Z.
634f1b3f-45a7-48d8-817c-be88ff70d235
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Chen, Jie
2e0f920b-5a22-411c-826a-42a9b1677fd9
Chen, Xuyuan
6462a25a-e468-4c27-aeb4-350f882c94f3

Ahluwalia, Balpreet Singh, Hellesø, Olav Gaute, Subramanian, Ananth Z., Wilkinson, James S., Chen, Jie and Chen, Xuyuan (2010) Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting. SPIE Photonics West, United States. 23 - 28 Jan 2010. (doi:10.1117/12.840632).

Record type: Conference or Workshop Item (Paper)

Abstract

The high-refractive index contrast (Delta n ~0.65 as compared to silicon oxide) of Tantalum pentoxide (Ta2O5) waveguide allows strong confinement of light in waveguides of sub-micron thickness (200 nm). This enhances the intensity in the evanescent field, which we have employed for efficient propelling of micro-particles. The feasibility of opto-fluidics sorting of different sized micro-particles based on their varying optical propulsion velocity is suggested. Optical propulsion of fixed red blood cells (RBC) with velocity higher than previously obtained is also reported. The optical propulsion velocities of RBC in isotonic solution (0.25 M sucrose) and water have been compared.

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More information

Published date: 8 February 2010
Additional Information: Published in vol. 7613
Venue - Dates: SPIE Photonics West, United States, 2010-01-23 - 2010-01-28

Identifiers

Local EPrints ID: 78922
URI: https://eprints.soton.ac.uk/id/eprint/78922
PURE UUID: 583b4c68-e3b6-4b9a-b650-29f671eae561
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 16 Mar 2010
Last modified: 06 Jun 2018 13:19

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Contributors

Author: Balpreet Singh Ahluwalia
Author: Olav Gaute Hellesø
Author: Ananth Z. Subramanian
Author: Jie Chen
Author: Xuyuan Chen

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