Results 181 to 190 of about 78,821 (320)

Locking in Color: Stable RGB Perovskite Nanocrystal Films via UV Cross‐Linking

open access: yesAdvanced Optical Materials, EarlyView.
Combining block copolymer stabilized lead halide nanocrystals with a UV light‐based cross‐linking procedure yields ultra‐stable nanocrystal thin films, which are resistant to dissolution by organic solvents and impervious to interlayer ion exchange. This allows for the fabrication of stacked layer RGB all‐perovskite white light‐emitting phosphors with ...
Patrick Ganswindt   +8 more
wiley   +1 more source

Influence of surface condition of copper sheets on ultrasonic metal welding

open access: yesJournal of Advanced Joining Processes
Ultrasonic metal welding (USMW) is an industrially widespread joining process. Low heat input and large bonding area qualify USMW for demanding applications such as electrotechnical components.
E. Helfers   +3 more
doaj  

Far-Infrared Few-Cycle-Pulse Generation in Quantum-Well Heterostructures under Femtosecond Laser Pumping

open access: gold, 2005
A. A. Belyanin   +4 more
openalex   +1 more source

Asymmetric Transmission and Diffraction Engineering in Ultrathin media via Coupled Metasurfaces

open access: yesAdvanced Optical Materials, EarlyView.
Grating‐insulator‐grating coupled crosstalking metasurfaces hosted on a silicon nitride membrane platform for asymmetric control of the diffraction pattern and asymmetric transmission. It is shown that exploiting the interferences of higher diffraction orders between the two metasurfaces and engineering the resulting modes enables AT in such ...
Abbas Sheikh Ansari   +3 more
wiley   +1 more source

The Importance of Metal Ion Impurity Bands in the Photoluminescence of Halide Double Perovskites

open access: yesAdvanced Optical Materials, EarlyView.
Many publications have associated emission spectral features of double perovskite halides in the region at 460–470 nm with “pristine” materials. This leads to not only false observations but also incorrect conclusions concerning the transformation of dark into bright excitons or boosting self‐trapped exciton emission.
Hei‐Yui Kai   +4 more
wiley   +1 more source

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