Title :
Impedance spectroscopy of water confined in porous dielectric matrixes
Author :
Korolev, F.A. ; Kytin, V.G. ; Koslov, S.N.
Author_Institution :
Fac. of Phys., Lomonosov (M.V.) Moscow State Univ., Russia
Abstract :
Impedance of the system "porous alumina-water" have been investigated in the temperature range from -10 °C to +15 °C. Electric equivalent circuit of the investigated structure has been determined. Features of the impedance of nanoporous alumina with adsorbed water related to the phase transition water-ice have been revealed. Water crystallization temperature decrease has been found in the pores with diameters 20 ÷ 25 nm.
Keywords :
adsorption; alumina; crystallisation; dielectric materials; electric impedance; equivalent circuits; nanoporous materials; water; -10 to 15 degC; Al2O3; crystallization; electric equivalent circuit; impedance spectroscopy; nanoporous alumina; porous alumina-water system; porous dielectric matrixes; water-ice phase transition; Aluminum; Crystallization; Dielectrics; Electric resistance; Electrochemical impedance spectroscopy; Equivalent circuits; Frequency; Physics; Temperature distribution; Water;
Conference_Titel :
Dielectric Liquids, 2005. ICDL 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8954-9
DOI :
10.1109/ICDL.2005.1490121
