Results 41 to 50 of about 191,872 (232)

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

Communications satellite technology [PDF]

, 1964
Communications satellite technology - echo, relay, and syncom ...
Hedrich, A. L.
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Millimeter-wave Wireless LAN and its Extension toward 5G Heterogeneous Networks

, 2015
Millimeter-wave (mmw) frequency bands, especially 60 GHz unlicensed band, are considered as a promising solution for gigabit short range wireless communication systems.
Kusano, Hideyuki, Miyamoto, Shinichi, Mizukami, Makoto, Mohamed, Ehab Mahmoud, Namba, Shinobu, Peng, Hailan, Rezagah, Roya, Sakaguchi, Kei, Shirakata, Naganori, Takahashi, Kazuaki, Takinami, Koji, Yamamoto, Toshiaki   +11 more
core   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

O2‐Accessible Fe–N4 Active Site Density Boosts Efficient Oxygen Reduction to Fuel‐Cell Level

Advanced Materials, EarlyView.
This study investigates the role of hierarchical nanostructure design in optimizing oxygen mass transport for the oxygen reduction. Using atomically dispersed Fe–N–C catalysts with solid, yolk‐shell, and hollow structures, it demonstrates that the yolk‐shell architecture provides superior O2 accessibility to active Fe–N4 sites.
Tianyu Zhang, Chen Liang, Shilun Sun, Shibo Xi, Zhongbin Zhuang, Jinliang Yuan, Zheng Xiao Guo, Junfeng Liu   +7 more
wiley   +1 more source

Calibration Challenges for Future Radio Telescopes [PDF]

, 2010
Instruments for radio astronomical observations have come a long way. While the first telescopes were based on very large dishes and 2-antenna interferometers, current instruments consist of dozens of steerable dishes, whereas future instruments will be ...
Nijboer, Ronald, van der Tol, Sebastiaan, van der Veen, Alle-Jan, Wijnholds, Stefan J.   +3 more
core   +1 more source

Characterization and Design Framework for Micro‐ and Nanoscale Printed Metal Interconnects in Hybrid Electronic Systems

Advanced Materials Technologies, EarlyView.
This work establishes a framework for high‐resolution printed interconnects by coupling e‐jet printing control, multilayer deposition, and sintering optimization. Ink properties and printing speed influence particle stacking, while different sintering atmospheres drive distinct microstructural evolution.
Kaifan Yue, Siddharth Kurup, Rebecca Banner, Calib Lanier, Eric Vogel, Michael Filler, Kira Barton   +6 more
wiley   +1 more source

Performance of two Askaryan Radio Array stations and first results in the search for ultra-high energy neutrinos [PDF]

, 2016
Ultra-high energy neutrinos are interesting messenger particles since, if detected, they can transmit exclusive information about ultra-high energy processes in the Universe. These particles, with energies above $10^{16}\mathrm{eV}$, interact very rarely.
Allison, P., ARA Collaboration, Bard, R., Beatty, J. J., Besson, D. Z., Bora, C., Chen, C. -C., Chen, C. -H., Chen, P., Christenson, A., Connolly, A., Davies, J., Duvernois, M., Fox, B., Gaior, R., Gorham, P. W., Hanson, K., Haugen, J., Hill, B., Hoffman, K. D., Hong, E., Hsu, S. -Y., Hu, L., Huang, J. -J., Huang, M. -H. A., Ishihara, A., Karle, A., Kelley, J. L., Kennedy, D., Kravchenko, I., Kuwabara, T., Landsman, H., Laundrie, A., Li, C. -J., Liu, T. C., Lu, M. -Y., Macchiarulo, L., Mase, K., Meures, T., Meyhandan, R., Miki, C., Morse, R., Nam, J., Nichol, R. J., Nir, G., Novikov, A., O'Murchadha, A., Pfendner, C., Ratzlaff, K., Relich, M., Richman, M., Ritter, L., Rotter, B., Sandstrom, P., Schellin, P., Seckel, D., Shiao, Y. -S., Shultz, A., Stockham, J., Stockham, M., Touart, J., Varner, G. S., Wang, M. -Z., Wang, S. -H., Yang, Y., Yoshida, S., Young, R.   +66 more
core   +3 more sources