Results 181 to 190 of about 87,331 (315)

Directionally Asymmetric Holographic Imaging for Arbitrary Polarization States Using Janus Metasurfaces

open access: yesAdvanced Optical Materials, EarlyView.
We demonstrate single‐layer titanium dioxide Janus metasurface holograms that achieve directionally asymmetric imaging under forward and backward illumination. By integrating the Dammann grating principle with precise phase control, our design produces high‐fidelity holographic images for arbitrary polarization states at 532 nm, simplifying fabrication,
Yu‐Chuan Chang   +6 more
wiley   +1 more source

Resolving Dye Embedment in MOF‐5: Multimodal Evidence for Perylene‐Based Guest Encapsulation

open access: yesAdvanced Optical Materials, EarlyView.
Unambiguous discrimination between surface‐adsorbed and pore‐incorporated photoactive dyes remains a key challenge in hybrid MOF systems. This study presents a comprehensive multi‐technique approach ‐ combining PXRD, IR spectroscopy, N2 physisorption, and time‐resolved photoluminescence ‐ complemented by DFTB3 molecular dynamics, to elucidate the ...
Fabian L. Schüler   +11 more
wiley   +1 more source

From Single to Multi‐Glass/Ceramic Microarchitectures via Two‐Photon Lithography

open access: yesAdvanced Optical Materials, EarlyView.
Two‐photon lithography enables precise oxide microarchitectures. A transition is made from single to multi‐glass/ceramic materials by integrating spatially varied compositions via fluidic photoresin exchange. Low‐temperature annealing and optical characterization (i.e., cathodoluminescence, fluorescence microscopy) reveal how post‐treatment affects the
Joel Arriaga‐Dávila   +7 more
wiley   +1 more source

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