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Next-Generation Optical Nanotweezers for Dynamic Manipulation: From Surface to Bulk

Ghosh, S and Ghosh, S and Ghosh, A (2020) Next-Generation Optical Nanotweezers for Dynamic Manipulation: From Surface to Bulk. In: Langmuir, 36 (21). 5691 - 5708.

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Official URL: https://doi.org/10.1021/acs.langmuir.0c00728


Optical traps based on strongly confined electromagnetic fields at metal-dielectric interfaces are far more efficient than conventional optical tweezers. Specifically, these near-field nanotweezers allow the trapping of smaller particles at lower optical intensities, which can impact diverse research fields ranging from soft condensed matter physics to materials science and biology. A major thrust in the past decade has been focused on extending the capabilities of plasmonically enhanced nanotweezers beyond diffusion-limited trapping on surfaces such as to achieve dynamic control in the bulk of fluidic environments. Here, we review the recent efforts in optical nanotweezers, especially those involving hybrid forcing schemes, covering both surface and bulk-based techniques. We summarize the important capabilities demonstrated with this promising approach, with niche applications in reconfigurable nanopatterning and on-chip assembly as well as in sorting and separating colloidal nanoparticles. © 2020 American Chemical Society.

Item Type: Journal Article
Publication: Langmuir
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to the American Chemical Society
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 05 Nov 2021 09:23
Last Modified: 05 Nov 2021 09:23
URI: http://eprints.iisc.ac.in/id/eprint/65870

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