Results 271 to 280 of about 4,625,720 (345)

Chiral Sensing of Amino Acids under Visible Light via Hydroxypropyl Cellulose Gels

Advanced Optical Materials, EarlyView.
Hydroxypropyl cellulose gels enable visible‐light‐based chiral detection of amino acid enantiomers. This study showcases their structural color properties for distinguishing phenylalanine and alanine enantiomers. The gels exhibit pH‐responsive color changes, high sensitivity at low concentrations (0.2 wt.%), and long‐term stability, offering ...
Luyao Huang, Xianzhe Zhang, Cheng Xu, Jiwei Wang, Allen Zhang, Yongmin Liu, Hongli Zhu   +6 more
wiley   +1 more source

Beyond Fiber: Toward Terahertz Bandwidth in Free-Space Optical Communication. [PDF]

Sensors (Basel)
Ullah R, Ullah S, Ren J, Alwageed HS, Mao Y, Qi Z, Wang F, Khan SA, Farooq U.   +8 more
europepmc   +1 more source

Origin of the Laser‐Induced Picosecond Spin Current Across Magnetization Compensation in Ferrimagnetic GdCo

Advanced Optical Materials, EarlyView.
Picosecond spin current pulses generated by ferrimagnetic GdCo are studied via THz emission spectroscopy. Due to the GdCo micromagnetic structure, the spin current vanishes at compensation when a magnetic field is applied but persists for zero field. At room temperature, the THz spin current is dominated by Co. At low temperatures, Gd can significantly
Guillermo Nava Antonio, Quentin Remy, Jun‐Xiao Lin, Yann Le Guen, Dominik Hamara, Jude Compton‐Stewart, Joseph Barker, Thomas Hauet, Michel Hehn, Stéphane Mangin, Chiara Ciccarelli   +10 more
wiley   +1 more source

Tethered Balloon Cluster Deployments and Optimization for Emergency Communication Networks. [PDF]

Entropy (Basel)
Guan M, Feng Z, Jiang S, Zhou W.
europepmc   +1 more source

Active Formation of Friedrich–Wintgen Bound States in the Continuum in a Hybrid Plasmonic–Photonic Structure

Advanced Photonics Research, EarlyView.
A method is proposed for actively generating Friedrich–Wintgen bound state in the continuum (FW BIC) in a hybrid plasmonic–photonic structure near the commercially important communication wavelength. In addition, interactions between dark and bright modes can further form the FW BIC and support electromagnetically induced transparency‐like with maximum
Xiao‐Fei Yan, Xin‐Yang Wang, Qi Lin, Ling‐Ling Wang, Gui‐Dong Liu   +4 more
wiley   +1 more source

High-Performance Series-Fed Array Multiple-Input Multiple-Output Antenna for Millimeter-Wave 5G Networks. [PDF]

Sensors (Basel)
Alsaab N, Alhassoon K, Alsaleem F, Alsunaydih FN, Madbouly SO, Khaleel SA, Ameen AM, Shaban M.   +7 more
europepmc   +1 more source

Biphoton Waveforms of Photon Pair from Velocity‐Selective Atoms in a Doppler‐Broadened Atomic Ensemble

Advanced Photonics Research, EarlyView.
Telecom‐band quantum light sources have significant practical applications in this domain. This study reports the high‐performance telecom‐wavelength biphoton generation from a hot vapor cell of 87Rb. For the first time, the beat phenomenon in the autocorrelation function of the signal photon with telecom wavelength due to the velocity‐selective ...
Hansol Jeong, Heewoo Kim, Danbi Kim, Han Seb Moon   +3 more
wiley   +1 more source

Evolution of Bluetooth Technology: BLE in the IoT Ecosystem. [PDF]

Sensors (Basel)
Koulouras G, Katsoulis S, Zantalis F.
europepmc   +1 more source

Understanding the Temperature Conditions for Controlled Splicing Between Silica and Fluoride Fibers

Advanced Photonics Research, EarlyView.
Thermal splicing conditions are investigated between silica and ZrF4 fibers, focusing on mechanical strength. A fiber Bragg grating characterises the thermal profile in the filament splicer's hot zone. Results indicate a narrow temperature window for strong joints.
Antreas Theodosiou, Ori Henderson‐Sapir, Yauhen Baravets, Oliver T. Cobcroft, Samuel M. Sentschuk, Jack A. Stone, David J. Ottaway, Pavel Peterka   +7 more
wiley   +1 more source

Dual-Band Multi-Layer Antenna Array with Circular Polarization and Gain Enhancement for WLAN and X-Band Applications. [PDF]

Micromachines (Basel)
Virdee BS, Aribi T, Sedghi T.
europepmc   +1 more source