Results 51 to 60 of about 1,189,387 (221)

Nanoparticle trapping and control in a hollow whispering gallery resonator [PDF]

, 2017
In this work, hollow whispering gallery resonators with thin walls are filled with a water solution containing 500 nm nanoparticles. The quasi-droplet modes of the hollow resonator create an optical scattering force which pushes the particles around with
Nic Chormaic, Sile, Jonathan M. Ward, Yong Yang, Sile Nic Chormaic, Ward, Jonathan M., Yang, Yong   +5 more
core   +1 more source

Microfluidic flowmeter based on a liquid crystal-filled nested capillary

Communications Engineering
Microfluidic flowmeters are a powerful and highly accurate tool, enabling precise monitoring and measurements of flows of gases and fluids in a range of applications.
Zhe Wang, Arun Kumar Mallik, Fangfang Wei, Zhuochen Wang, Anuradha Rout, Rayhan Habib Jibon, Qiang Wu, Yuliya Semenova   +7 more
doaj   +1 more source

A shielded planar dielectric resonator with whispering gallery modes

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
The spectral and energy characteristics of two planar dielectric resonators (DRs), open and shielded from the curvilinear surface, excited in higher-order modes as whispering gallery modes (WGMs) in Ka-waveband are investigated.
A. Ye. Kogut, I. K. Kuzmichev, R. S. Dolia, S. O. Nosatiuk, Ye. A. Shulha, He Jaochan   +5 more
doaj   +1 more source

Symmetry‐Imposed Selection Rules for Excitations of Nontrivial Plasmonic Topologies

Advanced Science, EarlyView.
A unified group‐theory selection rule governs the excitation of vectorial nearfield topologies across three plasmonic spin states. Derived from first principles, it predicts spin–orbit vortex splitting and multidimensional nested vortices, confirmed by phase‐resolved in situ measurements.
Jie Yang, Pengyi Feng, Fei Han, Weijin Chen, Zhongwei Jin, Jincheng Ni, Yuanjie Yang, Anxue Zhang, Guy A. E. Vandenbosch, Niels Verellen, Ewald Janssens, Jiafu Wang, Benfeng Bai, Cheng‐Wei Qiu, Xuezhi Zheng   +14 more
wiley   +1 more source

Talbot interference of whispering gallery modes

APL Photonics
The Talbot self-imaging phenomenon is a fundamental interference effect that is natural to all waves with a periodic structure. We theoretically and experimentally study the Talbot effect for optical waves in the transverse angular domain using ...
Matias Eriksson, Benjamin A. Stickler, Robert Fickler   +2 more
doaj   +1 more source

Solid and hollow whispering gallery mode resonators for all optical switch [PDF]

EPJ Web of Conferences
Whispering-gallery-modes resonators (WGMR) are effective switching devices when either coated or filled with non-linear material. We present examples of all-optical switching of hybrid WGM using polyfluorene, a methacrylate azobenzene and an acrylate ...
Frigenti Gabriele, Murzina Tatyana V., Farnesi Daniele, Pelli Stefano, Nunzi Conti Gualtiero, Soria Silvia   +5 more
doaj   +1 more source

Thermal shift of whispering gallery modes in tellurite glass microspheres

Results in Physics, 2020
The tremendous progress made in recent years in the production of tellurite glasses has led to the development of different optical elements and devices on their basis such as microresonators and microlasers.
A.V. Andrianov, M.P. Marisova, V.V. Dorofeev, E.A. Anashkina   +3 more
doaj   +1 more source

Probing higher order optical modes in all-dielectric nanodisk, -square, and -triangle by aperture type scanning near-field optical microscopy

Nanophotonics, 2021
All-dielectric nanoantennas, consisting of high refractive index semiconductor material, are drawing a great deal of attention in nanophotonics. Owing to their ability to manipulate efficiently the flow of light within sub-wavelength volumes, they have ...
Frolov Aleksandr Yu., Van de Vondel Joris, Panov Vladimir I., Van Dorpe Pol, Fedyanin Andrey A., Moshchalkov Victor V., Verellen Niels   +6 more
doaj   +1 more source

WGM Single‐Molecule Validation of pH‐Dependent Molecular Energetics at Gold Nanointerfaces: Influence of Buffer Molecules on Glyphosate Ligand Binding

Advanced Science, EarlyView.
Single‐molecule optical sensing reveals how pH and buffer molecules regulate glyphosate interactions with gold nanorods. Combined experiments and theoretical calculations show that changes in molecular charge and competition from buffer species determine whether glyphosate binds transiently or persistently.
Kulathunga Mudalige Kalani Perera, Srikanth Pedireddy, Sivaraman Subramanian, Frank Vollmer   +3 more
wiley   +1 more source

Excitation of forced modes in the dielectric disk resonator-diffraction grating system [PDF]

Журнал нано- та електронної фізики, 2010
In this work the strip-like diffraction grating influence on the spectrum of “whispering gallery” modes of the disk dielectric resonator was studied experimentally. The conditions of single-mode excitation in a wide frequency range had been defined.
A.I. Fisun, O.N. Sukhoruchko, O.I. Belous   +2 more
doaj