Direct current conductance

Kilbride BE, Coleman JN, Foumet P, Cadek A, Hutzler S, Roth S, Blau WJ (2002). Experimental observation of scaling laws for alternating current and direct current conductivity in polymer-carbon nanotube composite thin films. J. Appl. Phys. 92 4024—4030. 

From the thermodielectric profiles shown in Figures 4.44 through 4.47, it is eveident that the present effect did not give rise to a peak. This can be clarified with the help of the relationship between the direct current conductivity, in the case of ionic transport, and temperature [15,114] ... 

Fig. 23, the polyeleetrolyte complexes exhibit relatively low dielectric constants (e ) and loss factors (c") which slowly decrease with increasing frequency except for the PAA-polyethyleneimine (PEI) system. Hence, the loss tangent (e"/c ) monotonously decreases with frequency. Moreover, even if polyelectrolyte complexes contain a certain amount of microsalt, is the direct current conductance low. This dielectric behavior has been ascribed to the polarizability of the electrolyte sorbed into isolated microscopic domains within the matrix of the polyelectrolyte complexes. 

Fig. 22 Schematic self-assembled transverse-witlzin-parallel aligned structure of PS-6-P4VP(TSA)i.o(PDP)i.o supramolecules and the direct-current conductivity as a fimction of temperature. Presented also is the isotropic conductivity of a nonaligned sample (4). In the aligned case (3) the conductivity is increased, probably due to fewer domain boimd-aries, and the nanoscale conductivity anisotropy is manifestly present [155]...

Dissado LA, Hill RM. Anomalous low-frequency dispersion near direct current conductivity in disordered low-dimensional materials. J Chem Soc Faraday Trans 2, 1984 80 291-319. 

Figure 21. Direct-current conductance of the loop versus square root of ac power solid line, Ai A2 = 1 1 dotted line, A Ai = 1 2. Change in the conductance is normalized with respect to static conductance oscillation amplitude.

Figure 1. Direct current conduction electromagnetic pump...

At low frequencies one obtains from the DF (e = Bi -f- i 2) practically, the direct current conductivity of the free charge carriers, because the equation... 

This function is completely different, however, if the particles aggregate or even form a continuous ( percolating ) network with the result that the system displays a limited degree of direct-current conductivity. The frequency dependence of conductivity then disappears completely and displays now a metallic function with... 

With decreasing temperature and with decreasing fill-factor, both the direct-current conductivity and the relaxation frequency grow smaller. For more than seven orders of magnitude the known conduction current relaxation relation [135] applies... 

In Equation 2.2, e"xp is the experimental loss factor value is direct current conductivity d and S are thickness and area of sample, respectively = 2nf(f is frequency) and is the permittivity of vacuum. As a general rule for polymers, is determined from fitting of the real component of the complex conductivity (a j. = where CTq and n are fitting parameters) measured in the low frequency range where a plateau is expected to appear. 

L. T. Yu, M. S. Borredon, M. Jozefowicz, G. Belorgey, and R. Buvet, Experimental Study of direct current conductivity of macromolecular compounds, J. Polym. Sci. Part C-Polym. Symp., 16, 2931 (1967). 

Chang, R.H., Wagner, J.B. Direct-current conductivity and iron tracer diffusion in hematite at high-temperatures. J. Am. Ceram. Soc. 55, 211 (1972)... 

Surface conductance n. The direct-current conductance (A/V) between two electrodes in contact with a specimen of sohd insulating material when the current is passing only through a thin film of moisture on the surface of the specimen. 

Khachatiyan K, Khachatryan G, Fiedorowicz M, Para A, Tomasik P (2013) Formation of nanometal particles in the dialdehyde starch matrix. Colloid Surf B 102 578-584 Kilbride BE, Coleman JN, Foumet P, Cadek M, Drury A, Blau WJ (2002) Experimental observation of scaling laws for alternating current and direct current conductivity in polymer-carbon nanotube composite thin films. J Appl Phys 92 4024—4030 Kim E, Jiang ZT, No K (2000) Measurement and calculation of optical band gap of chromium alumunium oxide films. Jpn J Appl Phys 39 4820-4825 Kim H-S, Huber KC (2008) Channels within soft wheat starch A- and B-type granules. J Cereal Sci 48 159-172... 

Thompson, E. L., Capehart, X W., Fuller, X J. et al. 2006. Investigation of low temperature proton transport in Nation using direct current conductivity and differential scanning calorimetry. /. Electrochem. Soc. 153 A2351-A2362. 

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