Results 71 to 80 of about 4,749,527 (270)
IEEE Photonics JournalOptical satellite networks (OSN) utilizing wavelength division multiplexing (WDM) inter-satellite links (ISLs) and wavelength routing is becoming a new trend in constructing high-speed, large-capacity, and low-latency global network systems.
Jingkai Yang, Qiwen Ran, Jing Ma
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Advanced Materials, EarlyView.Self‐invalidating multilayer physical unclonable functions (PUFs) integrate fingerprint‐like metal nanopattern bilayers from block copolymer templates with highly reactive reduced graphene oxide (rGO) interlayers. This tamper‐responsive architecture blocks all unauthorized physical and chemical replication attempts while autonomously deactivating ...
Gyu Hui Jo +7 more
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IEEE Photonics JournalFuture space-based gravitational wave observatories, such as LISA and TianQin, require inter-satellite laser links that simultaneously support ultra-precise ranging, low-noise scientific phase measurements, and high-integrity data communication ...
Xiaoyang Guo +4 more
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A Case Study of an Hybrid RF and Optical Inter-Satellite Link Terminal to Enhance Optical Pointing
2024 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)The attitude determination and control system of a satellite plays a crucial role, especially in optical communication systems due to the narrow field-of-view of the laser. In the last years, the space ecosystem has shown a large interest in optical technology due to its high speed, reduced size, weight, and power, and reliable communications link ...
Fernández Niño, Elena +4 more
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Horizontal Link Demonstration Over 143 km With CubeISL: The World's Smallest Commercial Optical Communication Payload for Inter-Satellite Links [PDF]
New developments in the field of free-space optical (FSO) communications are enabling a breakthrough in satellite miniaturization and data rates. The CubeISL laser communication terminal (LCT), developed by the German Aerospace Center (DLR), shall ...
Rödiger, Benjamin +5 more
core
Fiber‐Format Flexible Linear Electrostatic Motors
Advanced Materials, EarlyView.A flexible coaxial fibre‐format electrostatic motor enables backdrivable and reversible linear actuation with high force density and functionality under bending, offering a scalable actuation platform for soft and wearable robotics. ABSTRACT Linear motion is fundamental to robotics, yet existing solutions are either rigid electromagnetic motors or ...
Sylvain Schaller, Herbert Shea
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IEEE Open Journal of the Communications SocietyThe development of Optical Satellite Networks (OSNs) is crucial for the evolution of next-generation networks. A significant technical challenge that occurred in OSNs is the limited energy available of satellites, which restricts power-intensive tasks ...
Hua Wang +6 more
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Bridging Biosensing and Hardware‐Level Data Security With a Conjugated Radical Polymer
Advanced Materials, EarlyView.A conjugated radical polymer provides two complementary functions within a common material platform: sensitive dopamine biosensing and device‐specific stochastic electrical responses for security. The work demonstrates a materials‐based approach for combining bioelectronic signal acquisition with hardware‐level authentication while maintaining the ...
Hoyeon Lee +9 more
wiley +1 more source
Efficient in‐Plane Exciton Transport in a Discontinuous Layered Lead‐Bromide Perovskite
Advanced Materials, EarlyView.A new class of two‐dimensional lead‐bromide perovskite based on monovalent 4‐aminomethylbenzoic acid cations is presented, featuring a discontinuous inorganic layer. Despite the discontinuous lattice, transient photoluminescence microscopy demonstrates efficient though strongly anisotropic in‐plane exciton transport.
Raquel Utrera‐Melero +9 more
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Autonomous and Earth-Independent Orbit Determination for a Lunar Navigation Satellite System
AerospaceIn recent years, the number of expected missions to the Moon has increased significantly. With limited terrestrial-based infrastructure to support this number of missions, as well as restricted visibility over intended mission areas, there is a need for ...
Joshua J. R. Critchley-Marrows +3 more
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