Researchers propose method to increase charge of supercapacitors

Nanowerk  December 1, 2021 For ionic liquids, not only are the charge and size of each ion important, but so too are such characteristics as dipole moment on a cation and static polarizability which determines the particle’s ability to get an induced dipole moment in the external electrical field. An international team of researchers (Russia, Germany) analysed how differential capacitance behaves depending on the voltage given the growing permanent dipole moment and static polarizability of cations for ionic liquids and electrolyte solutions. In both cases, the growth of polarizability or permanent dipole moment of cations leads to considerable growth of […]

Cracking open strong field quantum electrodynamics

Phys.org  September 28, 2021 After theoretical and computer modeling studies an international team of researchers (France, USA – Lawrence Livermore National Laboratory) proposed a scheme to explore regimes of strong-field quantum electrodynamics (SF QED) otherwise unattainable with the currently available laser technology. The scheme relies on relativistic plasma mirrors curved by radiation pressure to boost the intensity of petawatt-class laser pulses by Doppler effect and focus them to extreme field intensities. They showed that very clear SF QED signatures could be observed by placing a secondary target where the boosted beam is focused. This may finally crack the elusive physics […]