European Patent Office (EPO) published our patent EP3936476B1 — just before 55th FiDi (National Physicist’s Day)! Green method of PolyMethylMethaAcrylate (PMMA) removal from a Graphene surface by photoexposure was invented by Natalia Alexeeva and Irmantas Kašalynas. Read details about EP3936476 here: https://register.epo.org/application?number=EP21169747
European Patent Office (EPO) just published the patent for the method for fabrication of recessed electrical elements (EP3975224) by inventors Irmantas Kašalynas (head of our lab), Simonas Indrašiūnas, Pawel Prystawko, and Piotr Kruszewski. Two later inventors are our collaborators from Institute of High Pressure Physics at Polish
Academy of Sciences, Poland. The patent can be accessed here: https://register.epo.org/application?number=EP21183785
New principle and at the same time a new type of compact high-frequency radiation source operating at room temperature that can be placed on a semiconductor chip is suggested. It is broadband and can operate in the both GHz and THz frequency bands. Operation of the device relies on principles of the quantum optoelectronics (Esaki-Tsu nonlinearity of the quantum super-lattice), and employ drift-relaxation modes to amplify high-frequency radiation, which propagates in a semiconductor superlattice along its axis at a speed approximately 1000 times slower than the speed of light in a material. It can be realized in semiconductor superlattice with non-ohmic injection contacts of an appropriate design.
Patent No. LT2021567. At the time of writing this post some public access restrictions were implemented on this patent.