The electric moment contribution to the piezoelectricity of PVDF

1994 ◽  
Vol 1 (4) ◽  
pp. 553-562 ◽  
Author(s):  
F. Schaffner ◽  
B.J. Jungnickel
Keyword(s):  
Electric Moment

scholarly journals The estimation of electric moment in solution by the temperature coefficient method. Part I.—Experimental method and the electric moments of some benzyl compounds

1933 ◽  
Vol 142 (846) ◽  
pp. 173-197 ◽  
Keyword(s):  
Single Molecule ◽  
Polar Solvent ◽  
Fundamental Equation ◽  
Absolute Temperature ◽  
Electric Moment ◽  
Avogadro’S Number ◽  
Boltzmann Gas ◽  
Different Temperatures ◽  
The Moment ◽  
Coefficient Method

The theory of the estimation of the electric moment of molecules dissolved in a non-polar solvent is now well known. The fundamental equation is P 2∞ = 4 π /3 N (α 0 + μ 2 /3 k T) (1) in which the symbols have the following significance: P 2∞ the total polarizability of the solute per grain molecule at infinite dilution, N Avogadro’s number, α 0 the moment induced in a single molecule by unit electric field, k the Boltzmann gas constant, T the absolute temperature, and μ the permanent electric moment of the molecule. This equation is of the form P 2∞ = A + B/T, (2) where A = 4 π /3 Nα 0 and B = 4 π /9 . N μ 2 / k , from which it follows that if A and B are constant, i. e ., independent of temperature, then each may be evaluated from a series of measurements of P 2∞ at different temperatures or alternatively B (and hence μ ) may be obtained from one value of P 2∞ at one temperature, provided that A can be obtained by some independent method.

scholarly journals Modelling, characterization and quality analysis of heated oil using electric moment and chemical properties

2018 ◽  
Vol 56 (2) ◽  
pp. 571-579
Author(s):  
S. Rubalya Valantina ◽  
S. Uma ◽  
B. G. Jeya Prakash ◽  
D. R. Phebee Angeline ◽  
A. Alfred Maxwell ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Quality Analysis ◽  
Electric Moment ◽  
Heated Oil ◽  
And Chemical Properties

The Electric Moment of theΣ+1toO+Transition in the Continuum ofCl2

1936 ◽  
Vol 50 (4) ◽  
pp. 380-380 ◽  
Author(s):  
G. E. Gibson ◽  
O. K. Rice
Keyword(s):  
Electric Moment ◽  
The Continuum

scholarly journals The dielectric coefficients of gases.— Part I. The rare gases and hydrogen

1931 ◽  
Vol 132 (820) ◽  
pp. 569-585 ◽  
Keyword(s):  
Great Difficulty ◽  
Relative Accuracy ◽  
Rare Gases ◽  
Electric Moment ◽  
Different Temperatures ◽  
The Absolute

The heterodyne beat method affords a means of measuring the dielectric coefficients of gases with a relative accuracy exceeding that of any of the older determinations, and in consequence it has been employed by a number of observers during recent years. The published results, however, in many cases, refer mainly to the method, and measurements are restricted to one or two gases apparently selected at random. Such determinations when made at different temperatures suffice to determine the electric moment, but owing to the great difficulty of measuring the absolute values, the figures for the dielectric coefficients themselves obtained by different observers cannot be co-ordinated.

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