The skin of the person behaves similarly memristoru

The group of physicists of University of Oslo has found out that the skin of the person can similarly behave memristoru.
The author: Dmitry Safin

The group of physicists of University of Oslo has found out that the skin of the person can similarly behave memristoru.

Memristorami it is accepted to name passive elements which establish a parity between integrals on time at most a current proceeding through them, and pressure on them. The first working sample of such element has been received three years ago by employees of company NR on the basis of a thin film dioksida the titan.

It is known that memristory most advantageously simulate properties sinapsov: consecutive connection of two correctly picked up elements allows to model transfer of nervous impulses to an organism. In the future memristory can become a basis of so-called neuromorphic systems which are projected with the account of architecture of nervous system.



Looking through contemporary records of experiments, authors have found more simple example natural "memristivnosti". Corresponding characteristics as it has appeared, the usual skin has: the application of negative potential increases it elektroprovodnost, and the positive potential operates in the return image, raising resistance of a skin in the subsequent experiences. In other words, its electric properties depend from proceeding before currents.

Researchers consider as the reason of it action potovyh a time. Sweat contains ions with a positive electric charge (we will tell, sodium ions), and the potential application forces a liquid in cylindrical пóре to move upwards or downwards. In a case with negative potential the sweat possessing high conductivity, rises, gradually reducing resistance until пóра will not be filled. The positive potential, on the contrary, reduces a thickness of a layer of a liquid on walls пóры and elektroprovodnost skin.

Action of negative and positive potentials (illustration NewScientist).