Results 51 to 60 of about 26,576 (254)

Subwavelength structured surfaces and their applications [PDF]

open access: yesSPIE Proceedings, 1993
Subwavelength structured surfaces have a multitude of applications. These include antireflection suppression, fabrication of polarization components, narrowband filters, and phase plates. All of these applications offer advantages over conventional components.
Daniel H. Raguin   +2 more
openaire   +1 more source

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

open access: yesAdvanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng   +8 more
wiley   +1 more source

Subwavelength hybrid plasmonic structures for nonlinear nanophotonics

open access: yesLight: Science & Applications, 2021
Plasmonic structures made of a semiconductor-insulator-metal hybrid provide efficient routes for second-harmonic and sum-frequency generation in sub-micrometer structures, which ultimately may boost on-chip integrated plasmonic circuits.
Ann-Katrin U. Michel
doaj   +1 more source

The mechanism of the polarization dependence of the optical transmission in subwavelength metal hole arrays

open access: yes, 2011
We investigate the mechanism of extraordinary optical transmission in subwave-length metal hole arrays. Experimental results for the arrays consisting of square or rectangle holes are well explained about the dependence of transmission strength on the ...
  +9 more
core   +1 more source

Diffractive lens fabricated with binary features less than 60 nm [PDF]

open access: yes, 2000
We designed, fabricated, and characterized a binary diffractive lens with features less than 60nm. The lens was designed for operation in the red portion of the spectrum.
Dial, Oliver   +4 more
core   +1 more source

Laser-induced subwavelength structures by microdroplet superlens

open access: yesOptics Express, 2019
Nanoscale patterns on rigid or flexible substrates are of considerable interest in modern nanophotonics and optoelectronics devices. Subwavelength structures are produced in this study by using a laser beam and microdroplets that carry nanoparticles to the deposition substrate. These droplets are generated from an aqueous suspension of nanoparticles by
Eduardo, Castillo-Orozco   +2 more
openaire   +2 more sources

Disordered Carbon Shells Enable Shape Dependent Fluorescence Enhancement in Nanodiamond Quantum Sensors Revealed by Correlative TEM–Fluorescence Microscopy

open access: yesAdvanced Functional Materials, EarlyView.
Molten KNO2 treatment induces a lowrefractive index disordered carbon shell on fluorescent nanodiamonds, enhancing fluorescence emission while preserving spin coherence. Machine learningassisted correlative TEMPL enables direct single‐particle resolution of this enhancement relative to air‐oxidized nanodiamonds of similar morphology, establishing a ...
Parkarsh Kumar   +10 more
wiley   +1 more source

Temperature-Compensated Refractive-Index Sensing Using a Single Bragg Grating in an Abrupt Fiber Taper

open access: yesIEEE Photonics Journal, 2013
In this paper, temperature-compensated refractive-index (RI) sensing is realized by use of a single Bragg grating inscribed in a silica microfiber. The microfiber is tapered from a single-mode fiber with two short transition regions.
Yang Ran   +4 more
doaj   +1 more source

Asymmetric transmission in nanophotonics

open access: yesNanophotonics, 2023
In a reciprocal medium, transmission of electromagnetic (EM) waves is symmetric along opposite directions which restrict design and implementation of various systems in optics and photonics.
Sheikh Ansari Abbas   +2 more
doaj   +1 more source

Kirigami-based Elastic Metamaterials with Anisotropic Mass Density for Subwavelength Flexural Wave Control

open access: yes, 2017
A novel design of an elastic metamaterial with anisotropic mass density is proposed to manipulate flexural waves at a subwavelength scale. The three-dimensional metamaterial is inspired by kirigami, which can be easily manufactured by cutting and folding
Huang, G. L.   +3 more
core   +2 more sources

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