Results 201 to 210 of about 96,830 (337)

Color Laser Printer Identification through Discrete Wavelet Transform and Gray Level Co-occurrence Matrix [PDF]

open access: bronze, 2010
Ji-Yeoun Baek   +5 more
openalex   +1 more source

Spin‐Orbit Angular Momentum Conversion in Coupled Nonparaxial Bessel Acoustic Vortices

open access: yesAdvanced Science, EarlyView.
This study gives a formulaic description of the spin‐orbit angular momentum (AM) conversion in coupled fields of two nonparaxial Bessel acoustic vortices. Experimental results of wave field measurements provide compelling evidence for spin‐orbit AM conversion via passive artificial structures.
Di‐Chao Chen   +5 more
wiley   +1 more source

Metamorphosis from Quantum Dots to Quantum Shells and Highly Efficient Quantum Shell Light–Emitting Diodes

open access: yesAdvanced Science, EarlyView.
Herein, a novel quantum shell (QS) is achieved using an alloyed core/shell structure of CdZnSe/ZnSeS/CdSeS/CdS. It not only exhibits an intriguing metamorphosis from quantum dot to QS but also demonstrates outstanding photoluminescence and electroluminescence properties, such as high quantum yield, ultra‐long fluorescence lifetime, and high external ...
Zhao Chen   +4 more
wiley   +1 more source

Color‐Tunable Glass for Adaptable Thermal Management Based on Silver Phase Change

open access: yesAdvanced Science, EarlyView.
This article presents an Ag particle‐based thermal management device achieving both selective visible reflection and effective heat flux control. Morphological changes of silver during annealing enable tunable color and thermal regulation via a simple fabrication process.
Mi Jin Hong   +7 more
wiley   +1 more source

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