نتایج جستجو برای: electric potential histories

تعداد نتایج: 1214629  

2005
V. Kodali V. A. Rakov M. A. Uman K. J. Rambo G. H. Schnetzer J. Schoene J. Jerauld

Triggered-lightning properties, including dart-leader charge density, return-stroke propagation speed, dart-leader electric potential, dart-leader propagation speed, and dart-leader current, inferred from return-stroke current and very close electric field measurements, are presented. Although most of the estimates are based on relatively crude models, they are all generally in good agreement w...

Journal: :Physical review letters 2005
Chandramouli Subramaniam T Pradeep J Chakrabarti

We report the generation of a potential difference, of the order of tens of millivolts, induced by the flow of polar liquids over an assembly of gold nanoparticles. The device consisted of two conducting glass plates, one of which contained the gold nanoparticle multilayer assembly. The potential generated is in transverse direction to the flow and is dependent on the nature of the flowing liqu...

Journal: :Computer methods in biomechanics and biomedical engineering 2008
Barbara M Johnston Peter R Johnston David Kilpatrick

A recently presented solution method for the bidomain model (Johnston et al. 2006), which involves the application of direct current for studying electrical potential in a slab of cardiac tissue, is extended here to allow the use of an applied alternating current. The advantage of using AC current, in a four-electrode method for determining cardiac conductivities, is that instead of using 'clos...

Journal: :Journal of alternative and complementary medicine 2007
Andrew C Ahn Orjan G Martinsen

Acupuncture points are frequently described as having distinct electrical properties. These properties include increased conductance, reduced impedance and resistance, increased capacitance, and elevated electrical potential compared to adjacent nonacupuncture points. Commercial electrodiagnostic devices have used this assertion as a means to localize and analyze acupuncture points for diagnost...

2018
Elisa A Hemmig Clare Fitzgerald Christopher Maffeo Lisa Hecker Sarah E Ochmann Aleksei Aksimentiev Philip Tinnefeld Ulrich F Keyser

We explore the potential of DNA nanotechnology for developing novel optical voltage sensing nanodevices that convert a local change of electric potential into optical signals. As a proof-of-concept of the sensing mechanism, we assembled voltage responsive DNA origami structures labeled with a single pair of FRET dyes. The DNA structures were reversibly immobilized on a nanocapillary tip and und...

Journal: :Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering 1997
Y Yu G Tian Y Gai S Hu G Bai

To study the possibility of using acupoint electric potential as an index for evaluation of pilot's reaction to vestibular stimulation, electric potential was measured on both sides of left and right Neiguan points and Zusanli points in 80 pilots. Rotation chair was used as the method of stimulation. The results showed that changes of acupoint electric potentials were not significant (P >0.05) ...

Journal: :Nano letters 2009
Jiwoong Park Y H Ahn Carlos Ruiz-Vargas

Unlike in linear nanostructures, photocurrent generated in single-layer graphene (SLG) is expected to display two-dimensional characteristics. This allows the investigation of carrier dynamics, in relation to several spatially varying factors (such as the location of photocurrent generation and collection) and the overall electron band configuration of the SLG. In this letter, we use scanning p...

2015
Yingtao Yang

The theory of electrodynamic space-time relativity (TESTR) is the study of the transformation of time and space between two electrodynamic inertial frames of reference, which have both inertial velocity difference and electric potential difference. It is a fundamental space-time theory of theoretical physics based on the Einstein’s special theory of relativity (STR), the electric potential limi...

Journal: :Journal of neural engineering 2016
Thomas Flores Georges Goetz Xin Lei Daniel Palanker

OBJECTIVE High resolution visual prostheses require dense stimulating arrays with localized inputs of individual electrodes. We study the electric field produced by multielectrode arrays in electrolyte to determine an optimal configuration of return electrodes and activation sequence. APPROACH To determine the boundary conditions for computation of the electric field in electrolyte, we assess...

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