Results 191 to 200 of about 3,841,285 (278)

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, Volume 20, Issue 17, 3 September 2026.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

Surpassing kilometer-scale terahertz wireless communication beyond 300 GHz enabled by hybrid photonic-electronic synergy. [PDF]

Light Sci Appl
Cai Y, Zhang L, Zhang J, Hua B, Ma K, Ding J, Bian X, Lei M, Liu Y, Li J, Xin Z, Chen X, Cai J, Pan P, Huang Y, Feng J, Zhu M, You X.   +17 more
europepmc   +1 more source

SAR validation of RF coils and implants in a B0‐free RF safety laboratory

Medical Physics, Volume 53, Issue 9, September 2026.
Abstract Background As MRI continues to advance toward higher field strengths, RF safety assessment has become more complex. Accurate estimation of specific absorption rate (SAR) is essential for evaluating both hardware and implant safety, yet thermometry and simulation‐only approaches face limitations.
Nur Izzati Huda Zulkarnain, Mazin M. Mustafa, Alireza Sadeghi‐Tarakameh, Mert Ates, Jeromy Thotland, Steve Jungst, Arcan Erturk, Lance DelaBarre, Matt Waks, Russell L. Lagore, Kamil Ugurbil, Gregory J. Metzger, Gregor Adriany, Yigitcan Eryaman   +13 more
wiley   +1 more source

Joint optimization for throughput fairness maximization in laser-powered UAV communications. [PDF]

PLoS One
Zhang G, Dan Q, Zhang Y.
europepmc   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, Volume 43, Issue 6, Page 4094-4115, September 2026.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

Overcoming the rate-power trade-off: multi-junction photovoltaic receivers for efficient near-infrared power and gigabit data transmission. [PDF]

NPJ Wirel Technol
Pellegrino C, Nacke R, Majlesein B, Younus O, Osahon INO, Babadi S, Schachtner M, Siefer G, Lackner D, Tavakkolnia I, Haas H, Helmers H.   +11 more
europepmc   +1 more source

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 560-572, September/October 2026.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

Space-time-coding metasurfaces for high-dimensional communications with OAM-, polarization-, and frequency-division multiplexing. [PDF]

Light Sci Appl
Zhang L, Cui TJ.
europepmc   +1 more source

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 573-593, September/October 2026.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source

Ultralight infrared-controlled wireless neuromodulation systems for freely behaving mice. [PDF]

Microsyst Nanoeng
Cha H, Hong Y, Kim G, Lee H, Kim M, Park SH, Lee S, Chou N, Shin H.   +8 more
europepmc   +1 more source