Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7790
Title: Opto-thermoelectric trapping of Fluorescent Nanodiamonds on Plasmonic Nanostructures
Authors: SHUKLA, ASHUTOSH
TIWARI, SUNNY
Majumdar, Ayan
Saha, Kasturi
KUMAR, G. V. PAVAN
Dept. of Physics
Keywords: Physics
2023
TOC-APR-2023
Issue Date: Apr-2023
Publisher: Optica Publishing Group
Citation: Optics Letters, 48(11), 2937-2940.
Abstract: Deterministic optical manipulation of fluorescent nanodiamonds (FNDs) in fluids has emerged as an experimental challenge in multimodal biological imaging. Designing and developing nano-optical trapping strategies to serve this purpose is an important task. In this letter, we show how chemically-prepared gold nanoparticles and silver nanowires can facilitate Optothermoelectric force to trap individual entities of FNDs using a long working distance lens, low power-density illumination (532 nm laser, 12 𝝁𝑾/𝝁𝒎𝟐 ). Our trapping configuration combines the thermoplasmonic fields generated by individual plasmonic nanoparticles and the opto-thermoelectric effect facilitated by the surfactant to realise a nano-optical trap down to a single FND 120 nm in diameter. We utilise the same trapping excitation source to capture the spectral signatures of single FNDs and track their position. By tracking the FND, we observe the differences in the dynamics of FND around different plasmonic structures. We envisage that our drop-casting platform can be extrapolated to perform targeted, lowpower trapping, manipulation, and multimodal imaging of FNDs inside biological systems such as cells.
URI: https://doi.org/10.1364/OL.491431
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7790
ISSN: 0146-9592
1539-4794
Appears in Collections:JOURNAL ARTICLES

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.