A measuring method is presented that allows the determination of the electric charge transferred during a metal-polymer contact in the presence of an external or internal field, the latter being produced by the charges that are transferred to the polymer. The polymer is used in the form of grains of about 1 mm diameter which oscillate in an electric field between two metal electrodes. Each time the grains collide with these electrodes a transfer of electric charge takes place which causes a change in the mobility of the grains. This change in mobility shows a pronounced dependence on the work-function of the metal electrode, when the electric field produced by the charges deposited on the polymer grains is properly taken into account.
The induction probe method is used to study the surface potential of TGS and LATGS crystals. The influence of L-alanine doping on the magnitude and decay of surface potential for LATGS crystal is found. The samples without internal bias field show nearly the same initial value and decay rate of surface potential for opposite electrode potentials. The opposite electrode potentials applied to the sample with internal bias field give different rate of surface potential decay. These changes of decay rate are related to domain structure rearrangement.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.