A source of white light and a way to generate white light

Patent number: 414821/PL229151

Creators: Łukasz Marciniak, WiesławStrek, Dariusz Hreniak, Robert Tomala, Bartłomiej Cichy, Yuriy Gerasymchuk

The subject of the invention is a white light source composed of a vacuum glass chamber containing an optically active element, an electromagnetic radiation generator of IR radiation provided with a laser IR diode, a power supply, a focusing lens and optionally a reflector characterized in that the optically active element placed in the vacuum chamber is thin-film graphene matrix up to 3mm thick. The object of the invention is also a method of generating white light by means of said white light source.

Link to patent:
View patent in Google Patents

Link to Nature Magazine:
Article #1      Article #2

Stable graphene-silica composites and the method of their preparation

Patent number: 422455

Creators: Wiesław Strek, Dariusz Hreniak, Anna Łukowiak, Anna Wedzynska, Yuriy Gerasymchuk

The subject of the invention is a stable graphene-silica composite based on expanded graphite oxide and silica or silica xerogel, characterized in that it is a system consisting of flakes of graphene and silica, where each graphene flake is less than 2 μm. The subject of the invention is also a method of obtaining these composites.

Link to patent:
View patent

The method of producing an expanded graphene structure intercalated with nanoparticles of metal in the form of a powder or foam

Patent number: 422453

Creators: Wiesław Stek, Dariusz Hreniak, Anna Łukowiak, Anna Wedzynska, Yuriy Gerasymchuk

The subject of the invention is a method of producing an expanded graphene structure intercalated with metal particles, where Brodie oxidised graphite is used as the substrate, which is reacted with a colloidal solution of nanometric metal particles or with a metal salt solution, where the metal ions are subjected to reduction under mild conditions, a partially reduced particle bed intercalated with graphite oxide metal nanoparticles is further heat-treated to form the final product in powder or foam form. Preferably, the nanosized inclusions of metallic particles include iron, cobalt, nickel, silver or gold.

Link to patent:
View patent

Lighting device and a way to generate white light with high power

Patent number: 423185

Creators: Wiesław Strek, Robert Tomala, Mikołaj Łukaszewicz

The object of the invention is to provide a lighting device comprising a suitably prepared graphene matrix and a structure to prevent the effects of possible plasma phenomena after the matrix is excited.