Plasmonic tweezers: for nanoscale optical trapping and beyond

Y Zhang, C Min, X Dou, X Wang, HP Urbach… - Light: Science & …, 2021 - nature.com
Optical tweezers and associated manipulation tools in the far field have had a major impact
on scientific and engineering research by offering precise manipulation of small objects …

Recent advances in surface plasmon resonance sensors for sensitive optical detection of pathogens

JH Park, YW Cho, TH Kim - Biosensors, 2022 - mdpi.com
The advancement of science and technology has led to the recent development of highly
sensitive pathogen biosensing techniques. The effective treatment of pathogen infections …

Novel plasmonic nanocavities for optical trapping‐assisted biosensing applications

AN Koya, J Cunha, TL Guo, A Toma… - Advanced Optical …, 2020 - Wiley Online Library
Plasmonic nanocavities have proved to confine electromagnetic fields into deep
subwavelength volumes, implying their potentials for enhanced optical trapping and sensing …

Sensitivity Enhanced Plasmonic Biosensor Using Bi2Se3-Graphene Heterostructures: A Theoretical Analysis

F Du, K Zheng, S Zeng, Y Yuan - Nanomaterials, 2022 - mdpi.com
This study provided a theoretical insight for designing novel plasmonic biosensors using
bismuth selenide (Bi2Se3)-Graphene heterostructures. It was a van der Waals (vdWs) …

Solenoidal optical forces from a plasmonic Archimedean spiral

MA Zaman, P Padhy, L Hesselink - Physical Review A, 2019 - APS
The optical forces generated by a right-handed plasmonic Archimedean spiral (PAS) have
been mapped and analyzed. By changing the handedness of the circularly polarized …

Digital microfluidics with integrated Raman sensor for high-sensitivity in-situ bioanalysis

W Dong, R Fu, N Zhang, J Zhao, Y Ma, H Cui… - Biosensors and …, 2024 - Elsevier
This study introduces an advanced bioanalytical platform that combines digital microfluidics
(DMF) with Raman spectroscopy, effectively addressing common issues in bioanalysis such …

Efficient microparticle trapping with plasmonic annular apertures arrays

X Han, VG Truong, S Nic Chormaic - Nano Futures, 2018 - iopscience.iop.org
In this work, we demonstrate trapping of microparticles using plasmonic tweezers based on
arrays of annular apertures. The transmission spectra and the electric-field distribution are …

Extracting the potential-well of a near-field optical trap using the Helmholtz-Hodge decomposition

MA Zaman, P Padhy, PC Hansen… - Applied Physics Letters, 2018 - pubs.aip.org
The non-conservative nature of the force field generated by a near-field optical trap is
analyzed. A plasmonic C-shaped engraving on a gold film is considered as the trap. The …

Dipolar analysis of substrated particles using a far-field response method

M Hesari-Shermeh, B Abbasi-Arand, M Yazdi - JOSA B, 2020 - opg.optica.org
The presence of a substrate, when working with nanoparticles, is essential in many
applications, like optical nanoantennas, solar cells, and sensing. Understanding the effects …

Dynamically controlled dielectrophoresis using resonant tuning

P Padhy, MA Zaman, MA Jensen… - Electrophoresis, 2021 - Wiley Online Library
Electrically polarizable micro‐and nanoparticles and droplets can be trapped using the
gradient electric field of electrodes. But the spatial profile of the resultant dielectrophoretic …