Results 61 to 70 of about 2,857 (219)
Recent advances in spin‐orbit torque and magnetization switching of transition metal oxides
InfoScience, EarlyView.This review systematically introduces recent advances in transition metal oxides spintronics, including the underlying mechanisms of spin current generation and related symmetry theory, the magnetization switching processes driven by spin currents and magnon currents, respectively, as well as their corresponding transport properties, finally presenting
Wenjing Huo +7 more
wiley +1 more source
Fundamental performance limits of CPM coded modulation system
Tongxin xuebao, 2014 The study of the capacity of CPM systems was concerned with.The definition as well as the Finite-State-Machine (FSM) model of CPM was introduced.The development of calculating the capacity of CPM over AWGN channels was first reviewed.Then this ...
Bing LI, Fan WEI, Bao-ming BAI, Xiao MA
doaj +2 more sources
Journal of Raman Spectroscopy, EarlyView.We report the development and use of a transmission Raman spectroscopy (TRS) system for a more accurate but nonintrusive way of authentication of API in coated HCQ tablets which otherwise is not possible using the backscattered (BS) configuration of Raman spectroscopy. The coating interference is found to be almost zero in case of the TRS and a greater
Vijay Kumar +5 more
wiley +1 more source
Ambient‐Light‐Activated Rewritable Optical Patterning in Transparent Long‐Afterglow Garnet Ceramics
Laser &Photonics Reviews, EarlyView.This work demonstrates sunlight‐activated rewritable optical information storage in transparent long‐afterglow Y3Al2Ga3O12:Ce (YAGG:Ce) garnet ceramics fabricated via solid‐state sintering with tetraethyl orthosilicate (TEOS) as a sintering aid. By integrating ambient‐light operability, reversibility, and high optical clarity in a robust ceramic host ...
Luyang Hua +11 more
wiley +1 more source
Ultra Short Pulse Laser Welding of Glass to Metal in the Low Fluence Regime
Laser &Photonics Reviews, EarlyView.Ultrashortpulse laser welding enables precise joining of glass and metal with minimal thermal damage. We introduce the TwoThresholds Criteria to identify suitable laser parameters by combining the nonlinearabsorption threshold in glass with the metalmodification fluence threshold.
Lukas Günther +4 more
wiley +1 more source
Diffraction‐Free Natural Optical Skyrmions and Their Subwavelength Confinement Around Vortices
Laser &Photonics Reviews, EarlyView.ABSTRACT Diffraction causes waves to spread out as they propagate freely. The tighter the lateral confinement, the faster the spreading. Past research on how to suppress diffraction has been based on wave engineering and has led so far to idealized waves that, in real settings, eventually diffract.
Nilo Mata‐Cervera +4 more
wiley +1 more source
Near Surface Geophysics, EarlyView.Abstract The United Kingdom's shallow aquifers offer significant but underdeveloped geothermal energy resource. Seismic methods can help address this by improving the understanding of aquifer heterogeneity and potentially allowing long‐term monitoring of thermal plumes.
Adam D. Booth +10 more
wiley +1 more source
Distributed Space-Time Block Code over Mixed Rayleigh and Rician Frequency-Selective Fading Channels
EURASIP Journal on Wireless Communications and Networking, 2010 This paper proposes a new distributed space-time block code (DSTBC) over frequency-selective fading channels for two-hop amplify and forward relay networks, consisting of a source node (S), two relay nodes (R1 and R2), and a destination node (D).
Quoc-Tuan Vien +2 more
doaj +1 more source
Journal of King Saud University: Computer and Information Sciences, 2016 In this paper we evaluate the performance of cooperative spectrum sensing (CSS) where each cognitive radio (CR) employs an improved energy detector (IED) with multiple antennas and uses selection combining (SC) for detecting the primary user (PU) in ...
Srinivas Nallagonda +2 more
doaj +1 more source