Results 171 to 180 of about 219,503 (308)

Using Media Technology to Support Learning

, 2009
[[abstract]]The increasingly ubiquitous presence of instructional technology and communications technology in learning environments has greatly changed the traditional classroom environment.
Lin Si-Hao(林四皓)　
core  

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced 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, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

Humans as infrastructure: is AI-initiated steganography in social media possible? [PDF]

Front Big Data
Ortu D.
europepmc   +1 more source

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

Advanced 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, Giulio Carotta, Lorenzo Lavista, Andrea Camposeo, Giacomo Venturi, Agnese Guernieri, Alessandro Pitanti, Simon A. R. Horsley, Giuseppe C. La Rocca, Alessandro Tredicucci, Simone Zanotto   +10 more
wiley   +1 more source

Barriers to social media adoption among older adults: A systematic review. [PDF]

JAR Life
Michail K, Tsitsi T, Kyriakou M, Agvoustis S, Papoui E, Lambrinou E.   +5 more
europepmc   +1 more source

Basis‐Independent Geometric Phase Modulation in Circularly Birefringent Plasmonic Structures

Advanced Optical Materials, EarlyView.
Here we introduce a plasmonic metasurface composed of spatially rotated chiral spiral unit cells designed to produce space‐variant circular retardance. This generates a geometric phase ramp equivalent to a blazed grating, leading to polarization dependent diffraction orders in momentum space.
Pasha Goz, Akash Das, Andre Yaroshevsky, Yuri Gorodetski   +3 more
wiley   +1 more source

Overcoming barriers to neurosurgical care with technology and innovation. [PDF]

BMC Glob Public Health
Park JJ, Lee M, Wong E, Bhanot P, Limb AH, Ceesay O, Sakamoto A, Lin A, Buch VP.   +8 more
europepmc   +1 more source

Rigid Boron‐Fused Frameworks for Efficient Near‐Infrared Emission and Optical Gain Beyond 900 nm

Advanced Optical Materials, EarlyView.
Multiple‐resonance (MR)‐derived boron‐fused frameworks were integrated into narrow‐gap, long‐range charge‐transfer emitters to reduce structural relaxation and electron‐vibrational coupling. This strategy significantly decreases nonradiative losses, leading to improved near‐infrared (NIR) luminescence efficiency and low‐threshold amplified spontaneous ...
Masashi Mamada, Atsushi Hatanaka, Masahiro Hayakawa, Shintaro Kohata, Chihaya Adachi, Hajime Nakanotani, Takuji Hatakeyama   +6 more
wiley   +1 more source

Conditions and Pathways for Integrating Smart Care Robots Into Long-Term Care Facilities: Qualitative Study From Nursing Assistants' Perspectives. [PDF]

J Med Internet Res
An Y, Zhang F, Yang Y, Martin-Payo R, Xie X.   +4 more
europepmc   +1 more source

Electrochemistry‐Enabled Optical and Plasmonic Programmable Metasurfaces

Advanced Optical Materials, EarlyView.
Electrochemistry is emerging as a promising approach for engineering optical and plasmonic metasurfaces, from the fabrication of nanoscale structures to their dynamic control. This Perspective reviews electrochemical strategies for creating and tuning metasurfaces, examines current challenges and opportunities, and discusses how integration with ...
Charlène Brissaud, Leonardo Scarabelli
wiley   +1 more source