Science Daily  April 8, 2019 Previously proposed designs for negative capacitors worked on a temporary, transient basis. An international team of researchers (France, Russia, USA Argonne National Laboratory) created a permanent static negative capacitor which works as a steady-state, reversible device. The prime component of the negative capacitor involves a filling made of a ferroelectric material. By splitting a nanoparticle into two equal ferroelectric domains of opposite polarization, separated by a boundary called a domain wall, they were able to minimize the effect of the total depolarizing electric field. They showed that the ferroelectric nanodot capacitor hosts a stable two-domain […]