Results 191 to 200 of about 418,956 (371)
Chiral Sensing of Amino Acids under Visible Light via Hydroxypropyl Cellulose Gels
Advanced Optical Materials, EarlyView.Hydroxypropyl cellulose gels enable visible‐light‐based chiral detection of amino acid enantiomers. This study showcases their structural color properties for distinguishing phenylalanine and alanine enantiomers. The gels exhibit pH‐responsive color changes, high sensitivity at low concentrations (0.2 wt.%), and long‐term stability, offering ...
Luyao Huang +6 more
wiley +1 more source
Advanced Optical Materials, EarlyView.This study reveals the critical influence of film thickness and excitation wavelength on the ASE threshold in metal halide perovskites. By optimizing these factors, the ASE threshold is significantly reduced, providing key insights into optical confinement and carrier distribution for advancing electrically pumped perovskite lasers.
Yulin Mao +7 more
wiley +1 more source
Advanced Optical Materials, EarlyView.Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo +11 more
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Propagation in a model terrestrial waveguide of nonuniform height - theory and experiment
, 1965 E. Bahar, J.R. Wait
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Advanced Photonics Research, EarlyView.This work demonstrates the use of reactive laser annealing to selectively tune the epsilon‐near‐zero condition of tin‐doped indium oxide patches integrated in silicon waveguides. This postgrowth annealing technique enables flexible control over the optical constants of transparent conducting oxides (TCOs) at critical telecom wavelengths, paving the way
Juan Navarro‐Arenas +6 more
wiley +1 more source
Advanced Photonics Research, EarlyView.Applying a static electric field EDC to plasma‐enhanced chemical vapor deposition‐grown nonstoichiometric silicon oxides and silicon nitrides creates a voltage‐controllable optical second‐order nonlinearity χquasi(2)$\chi_{\text{quasi}}^{\left(\right. 2 \left.\right)}$.
Laurids Wardenberg +2 more
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Propagation in nonuniform waveguides with impedance walls
, 1964 R. L. Gallawa
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Advanced Photonics Research, EarlyView.An enhanced homogenization method for periodic lattices, applicable to any asymmetrical multipart structures, is proposed. This method simplifies intricate gratings into slab waveguides, predicts guided‐mode resonances and bound states in the continuum, without relying on numerical methods.
Atefe Taheri, Mehrdad Shokooh‐Saremi
wiley +1 more source