Results 81 to 90 of about 5,760,414 (306)

Research on High-Precision Initial Pointing for Near-Earth Laser Communication

Photonics
This paper proposes a systematic ground experimental method to address the insufficient initial pointing accuracy of optical terminals in free space optical communication (FSO).
Yuang Li, Xuan Wang, Junfeng Han, Xinxin Quan   +3 more
doaj   +1 more source

High-Gain Optical Injection Locking Amplifier in Phase-Coherent Optical Frequency Transmission

IEEE Photonics Journal, 2019
Optical amplification, which is necessary for extending the distance of optical frequency transfer, has a significant impact on the transmission performance.
Zitong Feng, Xi Zhang, Rui Wu, Yanguang Sun, Fang Wei, Fei Yang, Youzhen Gui, Haiwen Cai   +7 more
doaj   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

2.4-W Narrow-Linewidth Q-Switched $\hbox{Tm}^{3+}$ -Doped Double-Clad Fiber Laser

IEEE Photonics Journal, 2013
A narrow-linewidth 793-nm diode-pumped Tm3+ -doped double-clad silica fiber laser operated at 2 μm and actively Q-switched with an acousto-optic modulator is reported.
Qijie Huang, Ting Yu, Yameng Zheng, Jifeng Zu, Weibiao Chen   +4 more
doaj   +1 more source

Multistage, Self‐Sensing Artificial Muscles With Coordination From Liquid Crystal Elastomer‐Graphene Composite Fibers

Advanced Functional Materials, EarlyView.
Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang, Xuelin Wu, Yinding Chi, Qingya Huang, Yaoye Hong, Antonio Proctor Martinez, Jingxian Wu, Bingzhi He, Cynthia Sung, Shu Yang   +9 more
wiley   +1 more source

OrganiZational communication and organiSational communication: Binaries and the fragments of a field [PDF]

, 2009
In this paper, I employ personal narrative to help cast light on connections and tensions between organiZational communication research, as produced in the United States, and organiSational communication research, as produced in Aotearoa New Zealand.
Ganesh, Shiv
core  

Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel [PDF]

, 2008
An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Allen, John, Popoola, W, Popoola, Wasiu O., Leitgeb, Erich, Gao, S, Gao, Steven, Allen, Joe, Ghassemlooy , Zabih   +9 more
core   +1 more source

The Marshall Islands : history, culture and communication [PDF]

, 1980
"Draft: Not for Quotation, Citation or Reproduction without Permission of Author."For more about the East-West Center, see https://www.eastwestcenter.org/Policy decisions about communication system resources are an important part of controlled ...
Runeborg, Ruth E., East-West Communication Institute   +1 more
core   +1 more source

ATP‐Mediated Bidirectional Communication Between Natural and Artificial Cells for Controlled Bioreactions

Advanced Functional Materials, EarlyView.
Establishment of bidirectional communication behavior between natural and artificial cells. The first type of communication from natural dendritic cells to artificial polymeric cells was achieved via ATP release after cell lysis. The released ATP was taken up via gated UV‐controlled permeability increase of the polymeric membrane for performing ...
Ilona Kalte, Tsvetomir Ivanov, Leonhard Seufert, Shoupeng Cao, Lucas Caire da Silva, Volker Mailänder, Katharina Landfester   +6 more
wiley   +1 more source

Investigations on high-power laser beam-submerged arc hybrid welding of thick duplex stainless steel using laser beam wobbling

, 2021
Art. 042039, 9 S.Duplex stainless steels are used in many application fields due to their outstanding performance with respect to strength, toughness, and corrosion resistance.
Frank Riedel, Riedel, F., Stefan Kaierle, Markus Puschmann, Jörg Hermsdorf, Patrick Urbanek, Urbanek, P., Sarah Nothdurft, Lahdo, R., Overmeyer, L., Ludger Overmeyer, Nothdurft, S., Rabi Lahdo, Puschmann, M., Kaierle, S., Hermsdorf, J.   +15 more
core   +1 more source