Results 31 to 40 of about 438,791 (295)

Four-point probe measurements using current probes with voltage feedback to measure electric potentials

, 2017
We present a four-point probe resistance measurement technique which uses four equivalent current measuring units, resulting in minimal hardware requirements and corresponding sources of noise.
Cherepanov, V., Cuma, D., Korte, S., Lüpke, F., Voigtländer, B.   +4 more
core   +1 more source

Standardization of surface potential measurements of graphene domains [PDF]

, 2013
We compare the three most commonly used scanning probe techniques to obtain a reliable value of the work function in graphene domains of different thickness.
Kazakova, Olga, Panchal, Vishal, Pearce, Ruth, Tzalenchuk, Alexander, Yakimova, Rositza   +4 more
core   +2 more sources

A Novel Analog Front End with Voltage-Dependent Input Impedance and Bandpass Amplification for Capacitive Biopotential Measurements

Sensors, 2020
This paper proposes a novel analogue front end (AFE) that has three features: voltage-dependent input impedance, bandpass amplification, and stray capacitance reduction.
Hajime Nakamura, Yuichiro Sakajiri, Hiroshi Ishigami, Akinori Ueno   +3 more
doaj   +1 more source

Structural optimization and simulation of piezoelectric- piezoresistive coupled MEMS steady-state electric field sensor

Frontiers in Energy Research, 2023
: In view of the problems of large volume, high energy consumption and difficult maintenance of electric field measurement sensors in existing power systems, non-contact miniature electric field sensors have become a hot topic in current research.
Guote Liu, Yuanhao Ye, Bing Luo, Yu Gu, Weijia Zheng, Sijun Chen   +5 more
doaj   +1 more source

Measurement induced quantum-classical transition

, 2002
A model of an electrical point contact coupled to a mechanical system (oscillator) is studied to simulate the dephasing effect of measurement on a quantum system. The problem is solved at zero temperature under conditions of strong non-equilibrium in the
A. N. Korotkov, A. N. Korotkov, A. O. Caldeira, A. O. Caldeira, A. Shnirman, D. Mozyrsky, E. Joos, G. Johansson, H. Park, I. Martin, K. Mohring, M. Namiki, M. P. Blencowe, N. F. Schwabe, S. A. Gurvitz, S. A. Gurvitz, T. Bhattacharya, W. H. Zurek   +17 more
core   +1 more source

Suns-V$_\textrm{OC}$ characteristics of high performance kesterite solar cells

, 2014
Low open circuit voltage ($V_{OC}$) has been recognized as the number one problem in the current generation of Cu$_{2}$ZnSn(Se,S)$_{4}$ (CZTSSe) solar cells. We report high light intensity and low temperature Suns-$V_{OC}$ measurement in high performance
Gokmen, Tayfun, Gunawan, Oki, Mitzi, David B.   +2 more
core   +1 more source

Research and Implementation of an Improved Non-Contact Online Voltage Monitoring Method

Sensors
High-precision non-contact online voltage monitoring has attracted considerable attention due to its improved safety. Based upon existing research works and validation of non-contact voltage measurement techniques, an enhanced approach for online voltage
Meiying Liao, Jianping Xu, Wei Ni, Zijian Liu   +3 more
doaj   +1 more source

Charging induced asymmetry in molecular conductors

, 2004
We investigate the origin of asymmetry in various measured current-voltage (I-V) characteristics of molecules with no inherent spatial asymmetry, with particular focus on a recent break junction measurement.
A. Aviram, A. W. Ghosh, C. Kergueris, E. G. Emberly, E. Polizzi, F. Zahid, F. Zahid, J. N. Murell, M. Paulsson, S. Datta, S. Datta   +10 more
core   +1 more source

Adjustment and Measurement of Contact Angle with Electrowetting on a Quartz-Crystal Microbalance

Inventions, 2018
Electrowetting-on-dielectric (EWOD) has been widely exploited as an actuating force to manipulate liquids by surface tension and modulation of the contact angle on a microscale.
Jing-Wei Lin, Da-Shin Wang, Shih-Kang Fan   +2 more
doaj   +1 more source

Charge tunneling in fractional edge channels

, 2010
We explain recent experimental observations on effective charge of edge states tunneling through a quantum point contact in the weak backscattering regime.
A. Braggio, D. Ferraro, M. Sassetti, N. Magnoli, S. Das Sarma, T. Martin   +5 more
core   +1 more source