Results 111 to 120 of about 27,248 (265)

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

open access: yesAdvanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan   +10 more
wiley   +1 more source

Single‐Step Fabrication of Smart 3D Microstructures Exploiting Naphthopyrans as Photoinitiators and Photochromic Molecules

open access: yesAdvanced Optical Materials, EarlyView.
Naphthopyran–benzophenone compounds can act simultaneously as photoinitiators and photochromic molecules for two‐photon polymerization. Using a single‐step process, liquid photoresist is encapsulated within polymerized 3D microstructures, preserving reversible UV–vis photochromism after fabrication.
João P. Leote   +5 more
wiley   +1 more source

Broadband Cavity-Enhanced Absorption Spectroscopy with Incoherent Light

open access: yes, 2014
Although broadband incoherent light does not efficiently couple into a high-finesse optical cavity, its transmission is readily detectable and enables applications in cavity-enhanced absorption spectroscopy in the gas phase, liquid phase and on surfaces.
Ruth, Albert A.   +2 more
openaire   +2 more sources

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

open access: yesAdvanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio   +10 more
wiley   +1 more source

NbN Broadband Plasmonic Absorbers for Efficient Hot-Carrier Injection Toward Improved Solar-to-Hydrogen Conversion. [PDF]

open access: yesAdv Sci (Weinh)
Niobium nitride (NbN) broadband plasmonic metasurface absorbers provide an efficient platform for solar‐energy conversion through hot‐carrier injection. Quasi‐epitaxial NbN features a low work function of 4.0 eV, reducing the interfacial injection barrier and facilitating charge transfer into adjacent photocatalysts.
Peng TY   +11 more
europepmc   +2 more sources

Broadband-omnidirectional absorption using inclined wiremesh gratings

open access: yesJASA Express Letters
With the aim of achieving strong absorption over a wide range of frequencies and angles of incidence, the reflection of an acoustic wave by a rigidly-backed periodic layer of inclined ultrathin resistive sheet is studied theoretically and numerically.
Juan Pablo Escudero   +2 more
openaire   +3 more sources

Single‐Photon Emitters in Thickness‐Controlled hBN Directly Grown on Silicon Platform

open access: yesAdvanced Optical Materials, EarlyView.
Direct, catalyst‐free CVD growth produces thickness‐controlled hBN films on SiO2/Si without transfer. Growth temperature, film thickness, and carbon incorporation tune the density and single‐photon fraction of defect emitters while preserving the hBN lattice structure.
Yeunjeong Lee   +6 more
wiley   +1 more source

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