Results 161 to 170 of about 18,604 (310)

A Fast-Locking Phase-Locked Loop Using a Seven-State Phase Frequency Detector

, 2008
A seven-state phase frequency detector (S.S PFD) is proposed for fast-locking charge pump based phase-locked loops (CPPLLs) in this paper. The locking time of the PLL can be significantly reduced by using the seven-state PFD to inject more current into ...
Ma, HP, Yuan, L, Liu, SL, Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China., Hao, ZK, Shi, Y, Liu, SL   +5 more
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Active compensation of the AC Stark shift in a two-photon rubidium optical frequency reference using power modulation. [PDF]

Phys Rev Appl
Andeweg Y, Kitching J, Hummon MT.
europepmc   +1 more source

Imaging Electric Polarization Switching in Multilayer Graphene

Advanced Science, EarlyView.
Domain wall sliding‐induced electric polarization switching is directly observed for the first time in multilayer graphene, enabled by a novel optical readout method. The polarization switching is realized upon application of global and local electric fields, and mechanical forces between neighboring polar domains of opposite out‐of‐plane polarizations
Zhou Zhou, Xiyao Peng, Jianfeng Bi, Jing He, Fei Xue, Jie Jiang, Huizhen Wu, Zhiwen Shi, Haoliang Qian, Toshikaze Kariyado, Sihan Zhao   +10 more
wiley   +1 more source

Phase noise characterization of injection locked semiconductor lasers to a 250 MHz optical frequency comb

Two lasers are simultaneously injection locked to the same comb mode and the injection locking quality is assessed in terms of phase noise and phase variance (1 kHz-10 MHz) for various injected ...
Wu, D., Slavík, R., Marra, G., Richardson, D.J.   +3 more
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A Multimodal Magnetically Driven Soft Robot With Integrated Actuation‐Sensing Based on Photothermal Reprogramming Technology

Advanced Science, EarlyView.
This work reports a thermally safe, photothermally reprogrammable magnetic soft robot with its reprogramming temperature tuned to ∼39.5°C for biocompatibility. It achieves multimodal locomotion (max speed of 1.8 BL/s) and integrates liquid‐metal capacitive sensing to monitor self‐motion and detect environmental changes in simulated gastric environments,
Liu Yang, Yuliao Dong, Kangning Li, Cheng Jing, Ben Wang, Lin Xu   +5 more
wiley   +1 more source

Research on a Miniaturized Digital Servo System for Passive Hydrogen Masers. [PDF]

Sensors (Basel)
Guo S, Cao M, Chen P, Shuai T, Hu W, Pei Y.   +5 more
europepmc   +1 more source

Bias‐Engineered Synthetic Antiferromagnets Hosting Sub‐20 nm Zero‐Field Skyrmions at Room Temperature

Advanced Science, EarlyView.
A fully compensated synthetic antiferromagnet (SAF) multilayer exhibits a uniform state at zero field, without skyrmions. We use a SAF bias system to provide RKKY‐mediated exchange bias to the SAF multilayer, promoting zero‐field skyrmion stabilization and polarity control.
Emily Darwin, Riccardo Tomasello, Reshma Peremadathil Pradeep, Mario Carpentieri, Giovanni Finocchio, Hans J. Hug   +5 more
wiley   +1 more source

Design and implementation of a phasor measurement unit using a new measurement technique. [PDF]

Sci Rep
Mohamed SA, Mageed HMA, Arafa OM, Merzban MH, Eteiba MB, Haiba AS.   +5 more
europepmc   +1 more source

Protein Structuromics Reveals a Loop‐Controlled Half‐Open Active Pocket Conformation Throughout Fe(II)/α‐ketoglutarate‐Dependent Dioxygenase Catalytic Cycle

Advanced Science, EarlyView.
This study reveals a conserved half‐open active pocket in Fe(II)/α‐ketoglutarate‐dependent dioxygenases through protein structuromics, distinguished by structural features comprising highly flexible loop elements. Enhanced sampling simulations‐guided mutagenesis experiments elucidated how this flexible loop regulates pocket open/closed conformations ...
Lunjie Wu, Huan Liu, Songyin Zhao, Lei Qin, Jiarui Li, Jun Wang, Zixuan Dai, Jie Gu, Yan Xu, Feiran Li, Yao Nie   +10 more
wiley   +1 more source

Design of charge pump phase locked loop

, 2012
Phase Locked Loop system is around since 1932. The versatility of PLL systems and where it can apply makes it very useful. It can be applied to automobiles as well as cellular chips. This thesis work presents design and analysis of a Phase Locked Loop in
Mishra, Satyabh
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