Results 211 to 220 of about 14,987,587 (260)

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

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Total Electron Content Measurements in Ionospheric Physics

Advances in Space Research, 2008
With the advent of modern global networks of dual-frequency Global Positioning System (GPS), total electron content (TEC) measurements along slant paths connecting GPS receivers and satellites at 22,000 km have become the largest data set available to ionospheric scientists.
T.W. Garner, T.L. Gaussiran II, B.W. Tolman, R.B. Harris, R.S. Calfas, H. Gallagher   +5 more
exaly   +2 more sources

Total electron content of the equatorial ionosphere

Planetary and Space Science, 1973
Total electron content (Nt) variations in the ionosphere above the magnetic equator (Thumba dip 0.6°S) obtained by the Faraday rotation measurements of beacon signals from S66 satellites are described for the period December 1965–August 1968. The Nt value reaches a minimum around 05 hr and a broad maximum between 14–18 hr, the diurnal ratio being more ...
R.G. Rastogi, R.P. Sharma, V. Shodhan
openaire   +1 more source

Pulsations in total columnar electron content

Journal of Geophysical Research: Space Physics, 1981
Radio signals from the ATS 6 beacon received at Boulder reveal small‐amplitude, quasi‐sinusoidal fluctuations with periods in the range of 10 to 50 s. Visual comparison of these data (116 events for October 1974 to April 1975) shows a good correspondence with simultaneous geomagnetic pulsations at Boulder in two thirds of the cases for which Boulder ...
T. Okuzawa, K. Davies
openaire   +1 more source

Comparing Models of Total Electron Content in the Ionosphere for GLONASS

Giroskopiya i Navigatsiya, 2017
Comparative analysis of quality has been performed for the models of total electron content which could be applied in single-frequency navigation receivers of GPS/GLONASS. The analysis is based on the evaluation of total electron content modeling errors versus its experimentally measured values represented by global ionosphere maps (GIM).
V. B. Ivanov, D. A. Zatolokin, O. A. Gorbachev   +2 more
openaire   +1 more source

Towards Reliable Ionospheric Total Electron Content Nowcasting

2018 12th International Conference on Sensing Technology (ICST), 2018
Robust functioning of the global navigation satellite systems (GNSS) heavily depends upon nonlinear dynamics of ionospheric parameters. Nowcasting the dynamics of ionospheric parameters is challenging problem. Informative parameters selection for the accurate predictive models construction is considered as part of the novel approach based on the ...
Aleksei V. Zhukov, Denis N. Sidorov, Yury Yasyukevich, Anna Mylnikova   +3 more
openaire   +2 more sources

TEC (Total Electron Content) Models

1989
Abstract : Models of the ionosphere were developed and utilized to evaluate Total Electron Content for various specified transmission paths from the ground into space. Keywords: Ionosphere; Total electron content.
null Peter, Dickson Kevin P., Larson Andrew J., Jr. Mazzella   +3 more
openaire   +1 more source

Latitudinal effect on Total Electron Content variations

2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
This work focuses on the latitudinal effect on the ionospheric parameters, in particular the Total Electron Content (TEC). Data of two IGS stations at Libreville, Gabon (9.6721°E, 0.3539°N), and at Ny-Alesund, Norway (11.8653°E, 78.9296°N) during February 2008 and July 2008 were analysed.
openaire   +1 more source