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Dielectric relaxation in synthetic melanin
Author(s) -
Osak Władysław,
Tkacz Katarzyna,
Sławiński Janusz,
Czternastek Halina
Publication year - 1989
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360281104
Subject(s) - chemistry , dielectric , relaxation (psychology) , polarization (electrochemistry) , melanin , electrode , current (fluid) , condensed matter physics , thermodynamics , analytical chemistry (journal) , optoelectronics , organic chemistry , materials science , physics , psychology , social psychology , biochemistry
The charging and discharging currents were investigated in a synthetic melanin sample. The presence of long‐lasting dielectric relaxation was established. The steady state was reached after a long time, from 10 3 to 10 5 s, which depends both on temperature and voltage. The temperature dependence of polarization was of an activation character ( E α = 0.67 eV). The kind of electrode material did not influence the current curves.