Results 91 to 100 of about 40,881 (309)

Characteristics and Microbial Activity of Shewanella and Escherichia coli under a Direct-Current Electric Field

International Journal of Electrochemical Science, 2019
The effects of a direct-current electric field on cell viability and physicochemical properties of exoelectrogens and non-exoelectrogens, e.g., Shewanella and Escherichia coli, were studied.
Chen Dou, Yiyang Liu, Di Yin, Yang Jiao, Jiali Xu, Guangtuan Huang, Lehua Zhang   +6 more
doaj   +1 more source

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

Research on the design method of high isolation and low parasitic parameters for medium-voltage SiC MOSFET driver power supply using wireless power transfer

Wireless Power Transfer
For medium-voltage SiC devices, there is a mutual restraint between the isolation capability and the coupling capacitance of the isolated gate drive power supply. It is the major bottleneck for structural compactness and insulation reliability.
Kai Xiao, Qian Chen, Zhihong Cai, Runmin Zheng, Fengjuan Zhang, Qing Zheng, Hao Feng   +6 more
doaj   +1 more source

Impact of Moisture Sorbed from Air by Activated Carbon Electrodeson their Capacitancein Aqueous Electrolyte of Supercapacitor

Фізика і хімія твердого тіла, 2016
Impact of moistures or bedfromair by porous carbon electrodes after vacuum dry in gon their specific capacitance in aqueous 1.0 M Na2SO4 solution was studied. It was shown by cyclicvoltammetry and impedances pectroscopy that electrodes lose more than 20 %
D. G. Gromadskyi
doaj   +1 more source

GIANT CAPACITANCE OSCILLATIONS RELATED TO THE QUANTUM CAPACITANCE IN GAAS ALAS SUPERLATTICES

, 1994
We have observed periodic current and capacitance oscillations with increasing bias on doped GaAs/AlAs superlattices at a temperature of 77 K. The maximum of the observed capacitance is larger than usual geometric capacitances in superlattices, being ...
ZHANG YH, LI YX, YANG XP, ZHANG YH CHINESE ACAD SCIINST SEMICONDNATL LAB SUPERLATTICES & MICROSTRUCTBEIJING 100083PEOPLES R CHINA, JIANG DH, ZHANG PH   +5 more
core  

Pulsed Digital Oscillators for Electrostatic MEMS

, 2012
This paper introduces a new actuation scheme for implementing Pulsed Digital Oscillators (PDOs) for electrostatic MEMS resonators. In this scheme, the capacitance of the device is biased with a voltage and it is periodically sampled. Short pulses of zero
Pons Nin, Joan, Blokhina, Elena, Madrenas, J., Gorreta, Sergi, Gorreta Mariné, Sergio, Domínguez Pumar, Manuel, O'Connell, Diarmuid, Feely, Orla, Dominguez, Manuel, Jiménez Serres, Vicente, Ruiz Fernández, Daniel, Madrenas Boadas, Jordi, Fernandez, D., O\u27Connell, Diarmuid, O'Connell, D., Jimenez, V.   +15 more
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Critical review of converter topologies for switched reluctance motor drives [PDF]

, 2007
This paper represents an overall literature review of SRM convenient drive circuit topologies with the proposal of a new topology utilizing switched capacitance circuit.
Elwakil, ES, Darwish, MK
core  

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Capacitance-voltage characteristics and electrostatic field distribution in CdTe/Si heterojunctions: temperature dependence and theoretical modeling

Materials Research Express
This study investigates the temperature-dependent capacitance–voltage (C-V) characteristics and electrostatic field distribution in cadmium telluride/silicon (CdTe/Si) heterojunctions to optimize their performance for solar and semiconductor applications.
Ibrokhim B Sapaev, Sadulla O Sadullaev
doaj   +1 more source