Abhay Kotnala
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Explore the profile of Abhay Kotnala including associated specialties, affiliations and a list of published articles.
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17
Citations
173
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Recent Articles
1.
Vasantham S, Kotnala A, Promovych Y, Garstecki P, Derzsi L
Lab Chip
. 2024 Jan;
24(3):517-527.
PMID: 38165913
Optical fiber tweezers offer a simple, low-cost and portable solution for non-invasive trapping and manipulation of particles. However, single-fiber tweezers require fiber tip modification (tapering, lensing, ) and the dual-fiber...
2.
Ding H, Kollipara P, Kim Y, Kotnala A, Li J, Chen Z, et al.
Sci Adv
. 2022 Jun;
8(24):eabn8498.
PMID: 35704582
Rotation of micro/nano-objects is important for micro/nanorobotics, three-dimensional imaging, and lab-on-a-chip systems. Optical rotation techniques are especially attractive because of their fuel-free and remote operation. However, current techniques require laser...
3.
Kotnala A, Ding H, Zheng Y
ACS Photonics
. 2022 Apr;
8(6):1673-1682.
PMID: 35445142
Plasmonic nanoapertures have found exciting applications in optical sensing, spectroscopy, imaging, and nanomanipulation. The subdiffraction optical field localization, reduced detection volume (~attoliters), and background-free operation make them particularly attractive for...
4.
Peng X, Kotnala A, Bangalore Rajeeva B, Wang M, Yao K, Bhatt N, et al.
Adv Opt Mater
. 2021 Aug;
9(13).
PMID: 34434691
The capabilities of manipulating and analyzing biological cells, bacteria, viruses, DNAs, and proteins at high resolution are significant in understanding biology and enabling early disease diagnosis. We discuss progress in...
5.
Kotnala A, Kollipara P, Zheng Y
Nanophotonics
. 2021 Jul;
9(4):927-933.
PMID: 34290954
Opto-thermoelectric tweezers present a new paradigm for optical trapping and manipulation of particles using low-power and simple optics. New real-life applications of opto-thermoelectric tweezers in areas such as biophysics, microfluidics,...
6.
Kotnala A, Zheng Y
Nanophotonics
. 2021 Jul;
8(3):475-485.
PMID: 34290953
Recent advances in opto-thermophoretic tweezers open new avenues for low-power trapping and manipulation of nanoparticles with potential applications in colloidal assembly, nanomanufacturing, life sciences, and nanomedicine. However, to fully exploit...
7.
Kotnala A, Zheng Y
Part Part Syst Charact
. 2020 Oct;
36(8).
PMID: 33041521
From unravelling the most fundamental phenomena to enabling applications that impact our everyday lives, the nanoscale world holds great promise for science, technology and medicine. However, the extent of its...
8.
Lin L, Kollipara P, Kotnala A, Jiang T, Liu Y, Peng X, et al.
Light Sci Appl
. 2020 Mar;
9:34.
PMID: 32194948
Optomechanics arises from the photon momentum and its exchange with low-dimensional objects. It is well known that optical radiation exerts pressure on objects, pushing them along the light path. However,...
9.
Kotnala A, Kollipara P, Li J, Zheng Y
Nano Lett
. 2019 Dec;
20(1):768-779.
PMID: 31834809
Nanoaperture-based plasmonic tweezers have shown tremendous potential in trapping, sensing, and spectroscopic analysis of nano-objects with single-molecule sensitivity. However, the trapping process is often diffusion-limited and therefore suffers from low-throughput....
10.
Kotnala A, Zheng Y, Fu J, Cheng W
Rev Sci Instrum
. 2019 Mar;
90(2):023107.
PMID: 30831709
Nanoparticles are important in several areas of modern biomedical research. However, detection and characterization of nanoparticles is challenging due to their small size. Back-focal-plane interferometry (BFPI) is a highly sensitive...