Results 181 to 190 of about 418,956 (371)
Selective Directional Enhancement in Gold/Perovskite Quantum Dot Metasurfaces
Advanced Optical Materials, EarlyView.A thin gold layer can selectively enhance the directional radiation of a perovskite quantum dot (QD)1D metasurface by incorporating hybrid plasmonic excitation and redistributing diffraction orders from substrate to cover. The use of template‐assisted self‐assembly techniques enables breakthrough tunability in radiative properties over large areas ...
Mohammad Adnan +6 more
wiley +1 more source
Large Bidirectional Refractive Index Change in Silicon‐rich Nitride via Visible Light Trimming
Advanced Optical Materials, EarlyView.Continuous‐wave visible light trimming of PECVD silicon‐rich nitride micro‐ring resonators enables precise, large bidirectional refractive index tuning. Resonance shifts as fine as 10 pm are achieved with a cost‐effective setup, demonstrating large red shifts of 49.1 nm and blue shifts of 10.6 nm.
Dmitrii Belogolovskii +8 more
wiley +1 more source
Scattering of Electromagnetic Waves by a Ferrite in a Waveguide [PDF]
, 1964 K. Kalikstein, Larry Spruch
openalex +1 more source
High Fidelity Waveguides Through Vitreous Media Recomposition for Next Generation Photonic Devices
Advanced Optical Materials, EarlyView.A newly designed aluminosilicate glass enables the fabrication of femtosecond laser‐written optical waveguides with ultra‐low propagation losses of −0.020 dB cm−1 at 1310 nm and −0.037 dB cm−1 at 1550 nm. Raman, Brillouin, and electron microscopy analyses reveal the mechanisms behind refractive index modifications, highlighting the role of glass ...
T Toney Fernandez +9 more
wiley +1 more source
Excitation of a Circular Cylindrical Cavity by a Circular Waveguide
, 1964 C. Bjerke, J. Van Bladel
openalex +2 more sources
A Modular Low‐Cost 3D Uniformly Illuminated Mini‐Photoreactor with Versatile In‐Situ Analysis
Advanced Optical Materials, EarlyView.A “green” Do‐It‐Yourself (DIY)‐realizable mini‐photoreactor made from cheap commercially available parts delivers unprecedented 3D uniform illumination with minimal wastage of photons, and additionally permits in situ much‐demanded analytical tools (absorption, fluorescence, and NMR spectroscopy).
Yuriy Shpinov +6 more
wiley +1 more source
Characteristics of the earth-ionosphere waveguide for VLF radio waves
, 1964 James R. Wait
openalex +1 more source
General analyses of the forced oscillations in a waveguide and in a cavity [PDF]
, 1960 Yoshio Hayashi
openalex +1 more source