Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gmbh

Leibniz-Institut Fur Neue Materialien Gemeinnutzige Gmbh

Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gesellschaft MIT Beschraenkter Haftung

Neo Technology, Inc.

Sectag Gmbh

Sectago Gmbh

Peter Rogin

Michael Veith

Peter William De Oliveira

Markus Koch

Frank Seils

Peter William Oliveira

Hechun Lin

Douglas Espin

Thomas Müller

Christian Wühr

Marcus Geerkens

Michael Gros

Martin Amlung

Nina Müller

Peter W Oliveira

Christian Wuehr

A process for producing doped nanoparticles, in particular for N-doped nanoparticles, includes a hydrothermal process using an organic nitrogen-containing compound or a mineral acid having at least one nitrogen atom. In particular, the photocatalytically active particles produced are characterized by a particularly high activity even in visible light.

Production of doped nanoparticles, and use of same

A security device includes a plurality of diffractive surface elements arranged on a carrier element. A surface covered by the diffractive surface elements on the carrier element can occupy at least a partial region of the carrier element. Each individual diffractive surface element can have a three-dimensional surface structure. A portion of the plurality of the diffractive surface elements can form a first surface element group including the portion of the plurality of diffractive surface elements, and an orientation of the diffractive surface elements in the first surface element group can be matched to each other wherein together they make a single first image point of an associated first symbol to be represented visible to an observer under particular observation conditions.

Security device

A security device includes a plurality of diffractive surface elements arranged on a carrier element. Each individual diffractive surface element can have a three-dimensional surface structure. A portion of the plurality of the diffractive surface elements can form a first surface element group. An orientation of the diffractive surface elements in the first surface element group can be matched to each other wherein they make a first point of an associated symbol to be represented visible. A plurality of additional surface element groups each can make a respective additional point of the symbol to be represented visible. The symbol can include a sum of all points represented by the first surface element group and the plurality of additional surface element groups. A movement of the symbol can be perceived by the continuous change in an angle of incidence of the light or an observation angle.

Magnetic composite particles can be used as proppants and allow for deliberate heating by applying an alternating magnetic field.

Magnetic composite particles

Optical elements, in particular for holographic applications, have a gradient structure formed by a refractive index gradient and include one or more organic polymers and at least one ionic liquid.

Optical elements with gradient structure

The invention relates to a method for producing structured optical materials. It also relates to a device for producing structured optical materials, and to use of the method. In order to create a novel, continuous method for the production of structured optical materials, which is more economical than the known production method, it is proposed within the scope of the invention that optical material be applied to a carrier, a carrier or protective film be laminated onto the optical material, the resulting laminate be exposed to light and thereby structured, and subsequently a delamination of at least one of the films be performed.

Device for producing structured optical materials

Growing community of inventors

Saarbrücken, Germany

Peter Rogin