Results 191 to 200 of about 30,173 (224)

Tunable wideband microwave photonic phase shifter and true time delay using a waveguide bragg grating. [PDF]

Sci Rep
Nasehi Z, Hosseini SE.
europepmc   +1 more source

Synergistic Pyro‐Phototronics and Structural Anisotropy in CsAg2I3/GaN Heterostructures for High‐Performance Polarization‐Sensitive UV Photodetectors

Advanced Science, EarlyView.
The development of polarization‐sensitive ultraviolet photodetectors is limited by poor heterojunction quality and low polarization sensitivity. This study integrates synthesized CsAg2I3 single crystals with intrinsic non‐centrosymmetry into van der Waals heterojunction devices, demonstrating pronounced pyro‐phototronic effect.
Yalin Zhai, Siqi Wang, Peng Guo, Songling Feng, Peng Wan, Jilong Tang, Caixia Kan, Hui Li, Daning Shi, Mingming Jiang   +9 more
wiley   +1 more source

LoRa Communications Spectrum Sensing Based on Artificial Intelligence: IoT Sensing. [PDF]

Sensors (Basel)
Mutescu PM, Popa V, Lavric A.
europepmc   +1 more source

Engineered Interfacial Control for Suppression of Phase Instability: Operando Visualization from Device to Module Scale

Advanced Science, EarlyView.
Operando real‐time current density–voltage absorption spectroscopy visualizes spatial phase evolution in mixed‐halide perovskites from device to module scale. Phase instability preferentially initiates in regions with insufficient carrier extraction, revealing electrical boundary conditions as governing factors.
Hangyeol Choi, Soo Woong Jeon, Wookyung Jeon, You‐Hyun Seo, Gill Sang Han, Myunghun Shin, Ji‐Sang Park, Jun Hong Noh, Yohan Yoon   +8 more
wiley   +1 more source

Comparative Analysis of Beamforming Techniques and Beam Management in 5G Communication Systems. [PDF]

Sensors (Basel)
Andras CM, Barb G, Otesteanu M.
europepmc   +1 more source

Monolithic UV‐Laser Programming of Photothermally Meta‐Morphing SMA Structures: Dual‐Encoded Kirigami Mechanics and Photonic Absorbance

Advanced Science, EarlyView.
A monolithic manufacturing strategy is presented for photothermal shape memory alloy (SMA) meta‐morphing structures. Using a single‐step UV‐laser process, the mechanical compliance is programmed via kirigami patterning while optical absorbance is simultaneously tuned through surface oxidation.
Hyunsoo Kim, Manmatha Mahato, Hunpyo Ju, Ryanda Enggar Anugrah Ardhi, Ji‐Seok Kim, Ashhad Kamal Taseer, Myung‐Joon Lee, Hyunjoon Yoo, Il‐Kwon Oh   +8 more
wiley   +1 more source

Switchable and expandable mid-infrared broadband metasurface absorber for adaptive infrared stealth based on VO₂ phase change materials. [PDF]

iScience
Yuan Y, Wang S, Qian M, Hou W.
europepmc   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Planar compact four port MIMO antenna for Ultra Wideband applications. [PDF]

PLoS One
Thanki P, Upadhyaya T, Patel U, Sorathiya V, Khishe M.   +4 more
europepmc   +1 more source