Results 91 to 100 of about 566,417 (282)

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source

A 3.9 km baseline intensity interferometry photon counting experiment

, 2018
In the last years we have operated two very similar ultrafast photon counting photometers (Iqueye and Aqueye+) on different telescopes. The absolute time accuracy in time tagging the detected photon with these instruments is of the order of 500 ps for ...
Barbieri, Cesare, Barbieri, Mauro, Farisato, Giancarlo, Favazza, Paolo, Lessio, Luigi, Naletto, Giampiero, Umbriaco, Gabriele, Verroi, Enrico, Zampieri, Luca   +8 more
core   +1 more source

Hydrogel‐Based Functional Materials: Classifications, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Conductive hydrogels have emerged as promising materials for smart wearable devices due to their outstanding flexibility, multifunctionality, and biocompatibility. This review systematically summarizes recent progress in their design strategies, focusing on monomer systems and conductive components, and highlights key multifunctional properties such as
Zeyu Zhang, Zao Cheng, Patrizio Raffa
wiley   +1 more source

User-Centric Blind Interference Alignment Design for Visible Light Communications

IEEE Access, 2019
Visible light communications (VLC) are considered as a key technology for future wireless communications. In order to mitigate the interference, several transmit precoding (TPC) schemes have been proposed for VLC.
Ahmad Adnan-Qidan, Maximo Morales Cespedes, Ana Garcia Armada   +2 more
doaj   +1 more source

Advances in Safe, Flexible, and Stretchable Batteries for Wearable Applications

Advanced Materials Technologies, EarlyView.
Unlike previous reviews centered on component‐based deformability, this work highlights safety‐driven design strategies for flexible and stretchable batteries. By integrating material‐level engineering, geometry‐controlled structures, biocompatibility, and self‐protection mechanisms, it establishes a unified framework that connects mechanical ...
Hyewon Kang, Garan Byun, Seunghyeb Ban, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Adaptive Postdistortion for Nonlinear LEDs in Visible Light Communications

IEEE Photonics Journal, 2014
In a visible light communication (VLC) system, the light-emitting diode (LED) is the major source of nonlinearity. The nonlinear effects in the VLC system are different from the conventional wireless communications system.
H. Qian, S. J. Yao, S. Z. Cai, T. Zhou
doaj   +1 more source

Application of Expurgated PPM to Indoor Visible Light Communications - Part II: Access Networks

, 2013
Providing network access for multiple users in a visible light communication (VLC) system that utilizes white light emitting diodes (LED) as sources requires new networking techniques adapted to the lighting features.
Brandt-Pearce, Maite, Noshad, Mohammad
core   +1 more source

Disrupting J‐Aggregation in Triazatruxene Dimers to Develop Responsive Luminescent Inks for Anti‐Counterfeiting Applications

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study investigates the stimulus‐responsive behavior of trialkylated triazatruxene dimers for third‐generation luminescent security inks. In particular, the derivative with flexible dodecyl chains displays high‐contrast, reversible color changes upon heating or shear, driven by liquid crystalline phase transitions and involving J ...
Raúl Martín, Marcelo Echeverri, Francisco González, Alicia de Andrés, M. Carmen Ruiz Delgado, Alberto Concellón, José Luis Serrano, Berta Gómez‐Lor   +7 more
wiley   +1 more source

LiRF: Light-Based Wireless Communications Supporting Ubiquitous Radio Frequency Signals

IEEE Photonics Journal
As the Internet of Things (IoT) becomes increasingly prevalent, there is a surge in wireless-connected devices. In this context, one technique that has garnered significant attention is visible light communication (VLC) due to its ultra-wide and license ...
Runxin Zhang, Menghan Li, Yuheng Zhang, Jian Xiong, Lu Lu   +4 more
doaj   +1 more source

Indoor Positioning for Multiphotodiode Device Using Visible-Light Communications

IEEE Photonics Journal, 2016
With the widespread use of light-emitting diodes (LEDs) for lighting, their ability to support communications through visible light has become promising for various wireless applications.
Wei Xu, Jia Wang, Hong Shen, Hua Zhang, Xiaohu You   +4 more
doaj   +1 more source