Results 71 to 80 of about 905 (178)

A High-Sensitivity Methane Sensor with Localized Surface Plasmon Resonance Behavior in an Improved Hexagonal Gold Nanoring Array

open access: yesSensors, 2019
This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of a hexagonal periodic gold nanoring array. The effects of structural parameters on the extinction spectrum and refractive index (RI) sensitivity are analyzed to ...
Hai Liu   +4 more
doaj   +1 more source

Optical generation of intense ultrashort magnetic pulses at the nanoscale

open access: yesNew Journal of Physics, 2013
Generating, controlling and sensing strong magnetic fields at ever shorter time and length scales is important for both fundamental solid-state physics and technological applications such as magnetic data recording.
Anagnostis Tsiatmas   +6 more
doaj   +1 more source

Constructive quantum interference in a bis-copper six-porphyrin nanoring

open access: yesNature Communications, 2017
Quantum interference in charge transport is attracting interest with applications in nanoelectronics and quantum computing. Here, the authors present a method for quantifying electronic transmission through molecules, and demonstrate constructive quantum
Sabine Richert   +5 more
doaj   +1 more source

Potent dual-mode hyperthermia and chemodynamic therapy triggered by smart magnetic ring-shaped nanozymes under switchable T1–T2 MRI navigation

open access: yesMaterials & Design
Emerging nanotechnologies in cancer therapy increasingly highlight the importance of integrating therapeutic and diagnostic functions into a single platform for enhanced efficacy and real-time monitoring.
Ying Hu   +13 more
doaj   +1 more source

Magnetization Reversal in Ferromagnetic Nanorings of Fourfold Symmetries

open access: yesAdvances in Materials Science and Engineering, 2017
Magnetic nanoparticles offer a broad spectrum of magnetization reversal processes and respective magnetic states, such as onion, horseshoe, or vortex states as well as various states including domain walls.
Andrea Ehrmann, Tomasz Blachowicz
doaj   +1 more source

High Absorption Broadband Ultra-Long Infrared Absorption Device Based on Nanoring–Nanowire Metasurface Structure

open access: yesPhotonics
Long-wave infrared (LWIR) broadband absorption is of great significance in science and technology. The electromagnetic field energy is absorbed by the metamaterials material, leading to the enhanced light absorption, from which the Metal–Dielectric–Metal
Jiao Wang   +6 more
doaj   +1 more source

Unveiling quasi-dark surface plasmon modes in Au nanoring cavities by cathodoluminescence

open access: yesScientific Reports, 2017
Spectral resolving and imaging surface plasmon modes in noble metal nanostructures are important for applications in nanophotonics. Here, we use cathodoluminescence (CL) spectroscopy to excite and probe quasi-dark plasmon modes of Au nanoring cavities ...
Chenglin Du   +7 more
doaj   +1 more source

Hydrazine Oxidation on a Single Electrocatalytic Nanoring

open access: yesECS Meeting Abstracts
Hydrazine (N 2 H 4 ) oxidation, yielding nitrogen and water, is critical for sustainable energy applications, including hydrogen production and electrochemical sensing.
Sakshi A. Ailawar   +3 more
openaire   +2 more sources

Plasmonic Focusing of a High-Order Cylindrical Vector Beam for On-Chip Detection

open access: yesPhotonics
We investigate the interaction between cylindrical vector beams (CVBs) and metallic annular structures. The mechanisms for plasmonic focusing and field distributions are studied both analytically and numerically. We demonstrate that the focusing patterns
Hao Wang   +3 more
doaj   +1 more source

Dynamical Properties of Plasmon Polaritons in Nanorings Driven by Cassini-Ordered Emitters

open access: yesNanomaterials
The dynamics of plasmon polaritons (PPs) in a periodic lattice of dispersed nanorings (NRs) with embedded quantum nanoemitters (NEs) arranged according to the Cassini–Bernoulli lemniscate (LB) is studied.
Gennadiy Burlak, Gustavo Medina-Ángel
doaj   +1 more source

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