Results 251 to 260 of about 4,625,720 (345)

Intelligent Energy Efficiency Maximization for Wirelessly-Powered UAV-Assisted Secure Sensor Network. [PDF]

Sensors (Basel)
Xu F, Zhang X.
europepmc   +1 more source

Selective Color Appearance of Liquid‐Crystal‐Aided Laser‐Induced Periodic Surface Structures

Advanced Optical Materials, EarlyView.
Self‐assembled nano trenches on transparent electrodes are produced by irradiating femtosecond laser, and then combined with liquid crystal, showing brilliant selective color, which is electronically switchable. The nano trenches diffract light, and those totally internally reflected light propagates in the liquid crystal cell.
Jia‐Pei Hsieh, Jing‐Gue Chang, Chih‐Yuan Tu, Kue‐Yo Chen, Yu‐Yuan Chen, Chun‐Hsiang Tseng, Vera Marinova, Shiuan‐Huei Lin, Hui‐Hsin Hsiao, Chih‐Wei Luo, Jieh‐Wen Tsung   +10 more
wiley   +1 more source

Secrecy outage probability and strictly positive secrecy capacity of UAV assisted cooperative NOMA system with two untrusted destinations. [PDF]

Sci Rep
Khan MJ, Ahmad S, Singh I, Sahu UK.
europepmc   +1 more source

EXPERIMENTAL INVESTIGATION OF UWB SIGNAL INTERFERENCE EFFECT BETWEEN UWB COMMUNICATION DEVICE AND VSAT

, 2019
Azizi Mohd Ali, Raja Syamsul Azmir Raja Abdullah, Shaiful Jahari Hashim, Mohd Fadlee A. Rasid, Aduwati Sali, Alyani Ismail, Fazirulhisyam Hashim   +6 more
openalex   +2 more sources

3D Printed Optics Achieves Broadband Structured Light

Advanced Optical Materials, EarlyView.
The arbitrary creation of structured light often requires complex design and fabrication steps and is largely limited to single wavelength. By leveraging off the toolkit for digital holograms, how complex amplitude modulation can be implemented as 3D printed optics in a manner that is broadband is shown, for the creation of multiwavelength forms ...
Leerin Perumal, Stefan Hengsbach, Moslem Mahdavifar, Jan Korvink, Andrew Forbes   +4 more
wiley   +1 more source

NOMA-MIMO in 5G network: a detailed survey on enhancing data rate. [PDF]

PeerJ Comput Sci
Halabouni M, Roslee M, Mitani S, Abuajwa O, Osman A, Binti Ali FZ, Waseem A.   +6 more
europepmc   +1 more source

Simultaneous Perfect Anomalous Reflection and Angle of Arrival Sensing in Reconfigurable Intelligent Surfaces

Advanced Optical Materials, EarlyView.
A reconfigurable intelligent surface is proposed that can simultaneously anomalously reflect the light and sense the angle of arrival. An in situ optimization of either the currents flowing on array elements or the far field in the receiver direction realizes anomalous reflection and suppresses parasitic scattering.
Mostafa Movahediqomi, Yongming Li, Grigorii Ptitcyn, Viktar Asadchy, Sergei Tretyakov   +4 more
wiley   +1 more source

A Time-Frequency Energy Squeeze Method Based on Estimating the Chip Rate of DSSS Signals. [PDF]

Sensors (Basel)
Zhao H, Sun FY, Cai Y, Liu WK.
europepmc   +1 more source

Bio‐Inspired Multifunctional Smart Windows: Surface Wrinkle‐Crack for Dynamic Optical and Wettability Modulations

Advanced Optical Materials, EarlyView.
This work presents a composite material for smart windows, combining W‐doped VO2, SiO2 nanospheres, and PDMS elastomers. The material simultaneously offers energy savings and on‐demand privacy at low temperatures. The research provides an insight to the role of surface wrinkles in enhancing privacy and introduces potential self‐cleaning features ...
Qiuting Zhang, Tingting Zhu, Na Li, Yuwei Hu, Ye Xu, Xi Chen, Yi Long, Yujie Ke   +7 more
wiley   +1 more source