Results 81 to 90 of about 68,824 (293)

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

A Modified Impedance-Frequency Converter for Inexpensive Inductive and Resistive Sensor Applications

Sensors, 2019
In this paper an exceptionally simple transducer is presented that is developed for experimental and custom-made sensors with inductive or resistive impedance output.
Michał Nowicki
doaj   +1 more source

Apparatus measures very small thrusts [PDF]

, 1964
Measurement of very small thrusts of an ion engine are made by mounting the engine on a platform supported by leaf springs which are loaded to have a zero spring constant.

core   +1 more source

Influence of normal and radial contributions of local current density on local electrochemical impedance spectroscopy. [PDF]

, 2012
A new tri-electrode probe is presented and applied to local electrochemical impedance spectroscopy (LEIS) measurements. As opposed to two-probe systems, the three-probe one allows measurement not only of normal, but also of radial contributions of local ...
Annergren, B. Tribollet, Bard, Baril, Bayet, Bayet, Blanc, Cachet, Dehri, Demaille, Eckhard, Eckhard, Franklin, Frateur, Frateur, Gabrielli, Gabrielli, Galicia, H.G. De Melo, Huang, Huang, Huang, Huang, Isaacs, J.V. Ferrari, Jaffe, Jorcin, Jorcin, Lacroix, Laforge, Lillard, Liu, Lohrengel, M. Keddam, M.E. Orazem, Martin, Michel, N. Pébère, Newman, Orazem, Philippe, Sanchez, Simoes, Smyrl, Souto, Souto, V. Vivier, Vuillemin, Wu, Zou   +49 more
core   +4 more sources

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Oral Dosed Organo‐Silica Nanoparticles Restore Glucose Homeostasis and β‐Cell Function in Diabetes Rats

Advanced Functional Materials, EarlyView.
An oral nanoplatform, MOP@T@D, which can maintain glucose homeostasis and restore islet β cells in diabetic rats is developed. It achieves efficient intestinal absorption and liver‐targeted delivery. The nanoparticle disintegrates only in response to hyperglycemia to release insulin on demand and provides antioxidant protection through selenoprotein ...
Chenxiao Chu, Mingli Wei, Che Bian, Xiaoshuang Bi, Yaxin Deng, Peifu Xiao, Jiansong Zhao, Yuying Wang, Haibing He, Jingxin Gou, Tian Yin, Xing Tang, Li Yang, Hongbo Zhang, Yu Zhang   +14 more
wiley   +1 more source

Energy harvesting from electric and magnetic fields in substations for powering autonomous sensors [PDF]

, 2011
This poster presentation looks at energy harvesting from electric and magnetic fields in substations for powering autonomous ...
Judd, Martin, Roscoe, Nina, Zhu, Minan
core  

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

Advanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken, K. Ashoke Raman, Alexander Bauer, Violeta Karyofylli, Eva Jodat, André Karl, Rüdiger‐A. Eichel   +6 more
wiley   +1 more source

Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness

Micromachines
Inductive contact force sensors, known for their high precision and anti-interference capabilities, hold significant potential applications in fields such as wearable and medical monitoring devices. Most of the current research on inductive contact force
Haozhe Zhang, Junwen Zhu, Yujia Yang, Qiang Liu, Wei Xiong, Xing Yang   +5 more
doaj   +1 more source

Inductive Magnetic Nanoparticle Sensor Based on Microfluidic Chip Oil Detection Technology

Micromachines, 2020
The wear debris in hydraulic oil or lubricating oil has a wealth of equipment operating information, which is an important basis for large mechanical equipment detection and fault diagnosis.
Chenzhao Bai, Hongpeng Zhang, Lin Zeng, Xupeng Zhao, Laihao Ma   +4 more
doaj   +1 more source