Results 111 to 120 of about 1,798,301 (207)

The war anthropogenic impact on the conditions of the Desna river surface waters

Людина і довкілля: Проблеми неоекології
Purpose. To provide a comprehensive environmental assessment of the condition of the surface waters of the Desna River in order to identify the main anthropogenic factors of impact, in particular the consequences of the war. Methods.
L. A. Horoshkovа, O. I. Menshov, Y. D. Korniichuk, A. O. Soloviova   +3 more
doaj   +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

The dissolution of gold colloids in aqueous thiosulfate solutions [PDF]

, 2008
The kinetics of the dissolution of gold and silver colloids in ammoniacal thiosulfate solutions has been studied using oxygen, copper(II) or oxygenated copper(II) as oxidants at pH 9 - 11 and temperature 22oC to 48oC.
Zhang, Xinmin
core  

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Research on the Effect of Oxygen Ions on the Coordination Structure and Electrochemical Behavior of Titanium Ions in NaCl-KCl Melt

Presently, extensive research has been conducted on the electrochemical behavior of titanium ions in molten salt, especially in relation to titanium fluoride coordination. However, there is limited research on the coordination between titanium and oxygen.
Peizhu Mao, Shengwei Li, Li, Shaolong, Fuxing Zhu, Li, Shengwei, Shaolong Li, Mao, Peizhu, Tianzhu Mu, Zhu, Fuxing, Mu, Tianzhu   +9 more
core   +1 more source

The Effect of 147 MeV ⁸⁴Kr and 24.5 MeV ¹⁴N Ions Irradiation on the Optical Absorption, Luminescence, Raman Spectra and Surface of BaFBr Crystals

Crystals
Today, BaFBr crystals activated by europium ions are used as detectors that store absorbed energy in metastable centers. In these materials, the image created by X-ray irradiation remains stable in the dark for long periods at room temperature.
Abdirash Akilbekov, Daurzhan Kenbayev, Alma Dauletbekova, Alexey Shalaev, Aiman Akylbekova, Gulnara Aralbayeva, Zein Baimukhanov, Muratbek Baizhumanov, Edgars Elsts, Anatoli I. Popov   +9 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Possible NEB diffusion paths of oxygen ions in hafnium oxide bulk phase

Possible NEB diffusion paths of oxygen ions in hafnium oxide bulk ...
Zhang Chao (5471381)
core   +1 more source

Unraveling Alkali Ion Electron Donation for Enhancing Heterogeneous Catalytic Oxidation

Advanced Science
Alkali ions, widely employed as promoters, play crucial roles in heterogeneous catalysis. However, their electron donation mechanism remains poorly understood because alkali ions do not have transferable electrons as metallic alkalis do.
Jin Wang, Zhenghui Zhang, Xianqiu Song, Rong Wang, Ying Xin, Yexin Zhang, Zhaoliang Zhang   +6 more
doaj   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source