Results 101 to 110 of about 2,052,379 (242)

Inverse‐Designed Superchiral Hot Spot in Dielectric Meta‐Cavity Toward Ultra‐Compact Enantioselective Detection

open access: yesAdvanced Optical Materials, EarlyView.
Linearly polarized incident light with normal incidence creates enhanced optical chirality hotspots on the metasurface. Several orders of magnitude optical chirality enhancement offers a promising route toward highly sensitive, compact chiral spectroscopy.
Anastasia Romashkina   +10 more
wiley   +1 more source

Connectivity and Safety: Key Drivers for Tourism Experiences in Remote Regions in the Post-Pandemic Era

open access: yesTourism and Hospitality
Mobile technologies are rapidly growing and shaping the tourism industry. Nonetheless, remote locations have specific characteristics that could restrain the deployment and use of technologies and jeopardize the sense of safety, affecting tourism ...
Gualter Couto   +5 more
doaj   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

open access: yesAdvanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu   +10 more
wiley   +1 more source

The Challenge in front of the new PR and media communications in perspective of European reality

open access: yesПроблеми на постмодерността, 2013
The dynamics and instability of the values requires - adequate, fast and clear communication. This are the needs of the new democratic society. Except communicational intermediary every PR needs to be a mediator and "educational expert".
Maria Liubenova
doaj  

Geometry‐Driven Whispering‐Gallery Modes in Self‐Assembled Phosphorescent Organic Microtubes

open access: yesAdvanced Optical Materials, EarlyView.
Micelles encapsulating tris(2‐phenylpyridine)iridium(III) self‐assemble into a hollow hexagonal microtube stabilized by a surface passivation layer. The hexagonal cross‐section confines circulating light along its facets, sustaining sharp whispering‐gallery resonances that guide photoluminescence emission under laser excitation.
Do Wan Kim   +10 more
wiley   +1 more source

Joint decision-making and power allocation for one-bit feedback sensor communications

open access: yes, 2012
10.1109/WCL.2012.031512.110140IEEE Wireless Communications Letters13177 ...
Gong, Yi.   +17 more
core   +1 more source

Visible‐Blind Near‐Infrared Organic Vision Sensors for Imaging in Adverse Environmental Conditions

open access: yesAdvanced Optical Materials, EarlyView.
This work presents high‐performance visible‐blind NIR OPDs enabled by a multilayer optical modulation layer. The devices achieve strong visible‐light suppression and enhanced NIR sensitivity, enabling robust imaging in foggy or low‐light environments.
Baozhong Deng   +9 more
wiley   +1 more source

Sub‐Diffraction and Irreversibly Tunable Imaging With Potato Starch Lenses

open access: yesAdvanced Optical Materials, EarlyView.
Native potato starch granules function as sustainable birefringent microlenses that enable polarization‐controlled conventional and vortex lensing via spin‐to‐orbital angular momentum conversion. They provide sub‐diffraction and spiral‐contrast imaging, support vortex‐array generation with controllable topological‐charge sign, exhibit irreversible ...
Petr Bouchal   +5 more
wiley   +1 more source

Opportunistic Throughput Optimization in Energy Harvesting Dynamic Spectrum Sharing Wireless Networks

open access: yesIEEE Open Journal of the Communications Society
We investigate opportunistic transmissions in a time-slotted wireless network, emphasizing constraints arising from finite durations allocated to various network operations and the availability of energy for these operations.
Amirhossein Taherpour   +3 more
doaj   +1 more source

1982 Bearkat Softball Team Photograph

open access: yes, 2015
Picture of the 1982 Bearkat Softball team after winning the NCAA Championship. The annual score for the 1982 Bearkat Softball team was 40-6.This image was originally created by the Sam Houston News Bureau, now known as the SHSU Communications ...
SHSU Communications Office
core  

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