Results 51 to 60 of about 207,760 (313)

Effects of geomagnetic activity on the mesospheric electric fields [PDF]

open access: yesAnnales Geophysicae, 1998
The results of three series of rocket measurements of mesospheric electric fields carried out under different geomagnetic conditions at polar and high middle latitudes are analysed.
A. M. Zadorozhny, A. A. Tyutin
doaj   +1 more source

Functionalized Silicon Electrodes Toward Electrostatic Catalysis

open access: yesFrontiers in Chemistry, 2021
Oriented external electric fields are now emerging as “smart effectors” of chemical changes. The key challenges in experimentally studying electrostatic catalysis are (i) controlling the orientation of fields along the reaction axis and (ii) finely ...
Long Zhang   +4 more
doaj   +1 more source

The influence of frequency of AC component on space charge behaviours in polyethylene under combined AC and DC electric fields [PDF]

open access: yes, 2014
Combined ac and dc voltages may occur in high voltage power transmission system, which bring challenges to the dielectric materials. Generally speaking, space charge is well recognised under high voltage dc conditions but has received little attention ...
C. Zhou   +3 more
core   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

On the profile of intense high-altitude auroral electric fields at magnetospheric boundaries [PDF]

open access: yesAnnales Geophysicae, 2006
The profile of intense high-altitude electric fields on auroral field lines has been studied using Cluster data. A total of 41 events with mapped electric field magnitudes in the range between 0.5–1 V/m were examined, 27 of which were co-located
T. Johansson   +7 more
doaj   +1 more source

The Discrepancy Between Simulation and Observation of Electric Fields in Collisionless Shocks

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Recent time series observations of electric fields within collisionless shocks have shown that the fluctuating, electrostatic fields can be in excess of one hundred times that of the quasi-static electric fields.
Lynn B. Wilson   +2 more
doaj   +1 more source

An examination of inter-hemispheric conjugacy in a subauroral polarization stream [PDF]

open access: yes, 2012
During geomagnetically disturbed conditions the midlatitude ionosphere is subject to intense poleward directed electric fields in the dusk-midnight sector.
Clausen, L.B.N.   +13 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields

open access: yesFrontiers in Physics
A three-dimensional, regional simulation is used to investigate ionospheric plasma density irregularities associated with Equatorial Spread F. This simulation is first driven with background electric fields derived from ISR observations.
Aaron Kirchman   +2 more
doaj   +1 more source

CHAPTER 4. Recent Advances in Designed Local Electric Fields

open access: yes, 2021
Remote designed local electric fields (D-LEFs) are emerging as a practical strategy for the manipulation of chemical reactivity. This chapter surveys the historical use of D-LEFs, and explores the theory and practical use of Brønsted acids and bases ...
M. L. Coote   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy