Results 171 to 180 of about 2,794,441 (253)

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

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

Transparent Single‐Dye NIR Photonic Platform for Multimodal Optical Authentication

Advanced Optical Materials, EarlyView.
A single‐component DHP‐SQ dye integrates visible transparency, near‐infrared (NIR) fluorescence, and photothermal functionality into one molecular platform. NIR‐selective visualization transforms visually imperceptible printed patterns into readily authenticated information, while screen‐printing compatibility enables well‐defined patterning on diverse
Su Jeong Choi, Seung Hyeon Kim, Dayoung Shin, Yeongnam Heo, Minseo Kim, Ji Hyeon Lee, Ji‐Eun Jeong, Young‐Jae Jin, Jin Chul Kim, Hyoung Eun Bae, Young Hoon Son, Sung Jin Park, Sang Hwan Nam, Young Il Park, Hyocheol Jung   +14 more
wiley   +1 more source

Polarization-dependent angularly selective dielectric reflector. [PDF]

Nat Commun
Yang H, Lee KY, Park S, Noh J, Musick K, Yu J, Santiago-Cruz T, Doiron CF, Cerjan A.   +8 more
europepmc   +1 more source

Photonic-band-gap traveling-wave gyrotron amplifier. [PDF]

Phys Rev Lett, 2013
Nanni EA, Lewis SM, Shapiro MA, Griffin RG, Temkin RJ.   +4 more
europepmc   +1 more source

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

Advanced 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, Dobin Kim, Sofiya Karankova, Su‐Hyun Gong, Young Duck Kim, Jaehyun Park, Hyowon Moon   +6 more
wiley   +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

Kirigami-actuated reconfigurable topological photonic crystals. [PDF]

Nat Commun
Liu MD, Jiang G, Cui J, Mei Y, Chen XD, Dong JW.   +5 more
europepmc   +1 more source

Residual Tetramethylammonium Hydroxide Limits ZnO Nanoparticle‐Based Quantum Dot Light‐Emitting Diode Performance

Advanced Optical Materials, EarlyView.
Residual tetramethylammonium hydroxide (TMAH) from ZnO nanoparticle (NP) synthesis is uncovered as a hidden impurity that migrates into quantum dot emissive layers during thermal processing. The resulting exciton quenching reduces the efficiency of quantum dot light‐emitting diodes despite improved electron transport upon annealing.
Ganghyun Park, Joonyeon Hwang, Hayeon Seo, Jisu Hwang, Jinsu Park, Wan Ki Bae, Jeonghun Kwak   +6 more
wiley   +1 more source

Topological Jackiw-Rebbi states in photonic Van der Waals heterostructures. [PDF]

Light Sci Appl
Randerson SA, Bouteyre P, Hu X, Palma Chaundler OJ, Knight AJ, Cheung CK, Gorbachev R, Watanabe K, Taniguchi T, Wang Y, Sigurðsson H, Tartakovskii AI.   +11 more
europepmc   +1 more source