Results 61 to 70 of about 254,598 (203)

Ac conductivity and dielectric properties of CuFe1−xCrxO2 : Mg delafossite [PDF]

open access: yes, 2011
The electrical and dielectric properties of CuFe(1−x)Cr(x)O(2) (0 ≤ x ≤ 1) powders, doped with 3% of Mg and prepared by solid-state reaction, were studied by broadband dielectric spectroscopy in the temperature range from −100 to 150 °C.
A Barnabé   +7 more
core   +3 more sources

Conductivity and power factor enhancement of n-type semiconducting polymers using sodium silica gel dopant

open access: yesAPL Materials, 2017
This work demonstrates the use of sodium silica gel (Na-SG) particles as a reducing agent for n-type conjugated polymers to improve the conductivity and thermoelectric properties.
Deepa Madan   +4 more
doaj   +1 more source

Effect of Residence Time of Graphitisation on Thermal Conductivity of Molded Graphite

open access: yesIndonesian Journal of Chemistry, 2010
The effect of residence time of graphitisation on thermal conductivity of molded graphite has been examined. The examination has been conducted by varying residence time of graphitisation of molded carbon with petroleum coke as raw material and coal tar ...
Pedy Artsanti   +2 more
doaj   +1 more source

The Vertical Distribution of Electrical Conductivity in the Upper Atmosphere

open access: yesJournal of geomagnetism and geoelectricity, 1953
Using available materials of recent rocket measurements, a calculation is made to obtain the atmospheric and ionospheric models of the upper atmosphere between 60km and 400km. On the basis of these models the vertical distribution of electrical conductivity and its height-integrated values for three ionospheric regions F, E and D are obtained.
openaire   +2 more sources

Preliminary Studies about Synthesis and Electrical Properties of Ruthenium Doped Lanthanum Strontium Titanate as a Potential Anode of Solid Oxide Fuel Cells [PDF]

open access: yes
The lanthanum strontium titanate (LST) is one of the most representative alternative anode materials. Although it shows low catalytic properties, the disadvantage could be improved by doping of ruthenium which is widely used as catalyst under steam ...
Chung, JS   +4 more
core   +1 more source

Layer-by-layer polypyrrole coated graphite oxide and graphene nanosheets as catalyst support materials for fuel cells [PDF]

open access: yes, 2013
For the production of advanced types of catalyst support materials, the distinguished properties of graphene nanosheets were combined with the structural properties of conducting polypyrrole by the incorporation of graphene nanosheets into a polymer ...
Alkan Gursel, Selmiye   +4 more
core   +2 more sources

Conductivity at Low Humidity of Materials Derived from Ferroxane Particles

open access: yesInternational Journal of Electrochemistry, 2012
Carboxylic-acid-stabilised γ-FeOOH particles (ferroxanes) are synthesized using a precipitation from aqueous solution, and a following reaction with acetic acid.
Alberto Lapina   +2 more
doaj   +1 more source

Remote sensing of cloud base charge [PDF]

open access: yes, 2017
Layer clouds are abundant in the Earth's atmosphere. Such clouds do not become sufficiently strongly charged to generate lightning, but they show weak charging along the upper and lower cloud boundaries where there is a conductivity transition.
Aplin, Karen   +2 more
core   +2 more sources

DC-conductivity of a suspension of insulating particles with internal rotation

open access: yes, 2009
We analyse the consequences of Quincke rotation on the conductivity of a suspension. Quincke rotation refers to the spontaneous rotation of insulating particles dispersed in a slightly conducting liquid and subject to a high DC electric field: above a ...
E. Lemaire   +11 more
core   +3 more sources

INFLUENCE OF PREPARATION CONDITIONS ON THE ELECTRICAL CONDUCTIVITY OF GaN THIN FILMS

open access: yesЕлектроніка та інформаційні технології
Background. Gallium nitride (GaN) is a promising material for the developing of LEDs, lasers, ultraviolet detectors, and high-frequency transistors.
Oleh Bordun   +5 more
doaj   +1 more source

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