Continuously tuneable on-chip photonic hook for manipulating nanoparticles along curved trajectories
Continuously tuneable on-chip photonic hook for manipulating nanoparticles along curved trajectories
The curvature and intensity of photonic hooks depend on the size, shape, and refractive index of the particles and can be used as optical tweezer that can guide cells/nanoparticles around obstructions. We propose the generation of on-chip photonic hook from a TiO2 hemispherical dome on SiO2 substrate. We further found that the curvature of the photonic hook can be continuously tuneable as a function of angle of illumination. For illumination angles below 20°, the photonic hook bends towards the optical axis and for angles above 20°, the beam bends away from the optical axis, forming a tuneable photonic hook.
optical trapping, optical tweezer, Photonic hooks, PNJ
Veluthandath, Aneesh Vincent
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
2 February 2023
Veluthandath, Aneesh Vincent
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Veluthandath, Aneesh Vincent and Murugan, Ganapathy Senthil
(2023)
Continuously tuneable on-chip photonic hook for manipulating nanoparticles along curved trajectories.
SPIE Photonics West, , San Francisco, United States.
28 Jan - 02 Feb 2023.
3 pp
.
(doi:10.1117/12.2650734).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The curvature and intensity of photonic hooks depend on the size, shape, and refractive index of the particles and can be used as optical tweezer that can guide cells/nanoparticles around obstructions. We propose the generation of on-chip photonic hook from a TiO2 hemispherical dome on SiO2 substrate. We further found that the curvature of the photonic hook can be continuously tuneable as a function of angle of illumination. For illumination angles below 20°, the photonic hook bends towards the optical axis and for angles above 20°, the beam bends away from the optical axis, forming a tuneable photonic hook.
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More information
Published date: 2 February 2023
Additional Information:
Funding Information:
Acknowledgement: This work was supported by the UK Engineering and Physical Sciences Research Council through grants EP/S03109X/1 and EP/N00762X/1.
Publisher Copyright:
© 2023 SPIE.
Venue - Dates:
SPIE Photonics West, , San Francisco, United States, 2023-01-28 - 2023-02-02
Keywords:
optical trapping, optical tweezer, Photonic hooks, PNJ
Identifiers
Local EPrints ID: 475225
URI: http://eprints.soton.ac.uk/id/eprint/475225
PURE UUID: 1c056c29-2440-43a0-a96c-5502fc8b11bc
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Date deposited: 14 Mar 2023 17:45
Last modified: 17 Mar 2024 04:00
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