Abstract: The object of the invention is a print head for three-dimensional printing comprising an extrusion assembly (1) functionally coupled to a drive assembly (3), and a nozzle assembly (2), functionally coupled to the extrusion assembly (1), providing filament (10) transfer, wherein there is a cooling assembly (18) disposed between the extrusion assembly (1) and the drive assembly (2), containing a fluid cooling system, comprising an inlet (15), an outlet (17) and a system of cooling ducts (14) disposed inside the cooling assembly (18), distributing the cooling medium (11), providing maintenance of the preset temperature of the extrusion assembly (1) and the drive assembly (3). The object of the invention is also a print head assembly.

Abstract: The object of the invention is a print head for three-dimensional printing comprising an extrusion assembly (1) functionally coupled to a drive assembly (3), and a nozzle assembly (2), functionally coupled to the extrusion assembly (1), providing filament (10) transfer, wherein there is a cooling assembly (18) disposed between the extrusion assembly (1) and the drive assembly (2), containing a fluid cooling system, comprising an inlet (15), an outlet (17) and a system of cooling ducts (14) disposed inside the cooling assembly (18), distributing the cooling medium (11), providing maintenance of the preset temperature of the extrusion assembly (1) and the drive assembly (3). The object of the invention is also a print head assembly.

Abstract: Embodiments of the present invention provides a touch switch “touch to turn” for electronic devices. More specifically, it provides a touch interface including an active graphene element which is contained in a housing or on a working surface of an electronic device. The active graphene element includes at least one layer of graphene arranged on a polymer layer. This active graphene element is electrically connected to the electronic device in such a way that touching the active graphene element causes a change in the state of said electronic device, in particular, causing the electronic device to be turned ON or turned OFF. This disclosure further encompasses the use of such touch switches in electronic devices.

Abstract: A signal cable for transmitting the signal between a transmitter (5) and a receiver (6), wherein the first plug (1) is intended for connection to the signal transmitter (5), and the second plug (2) is intended for connection to the signal receiver (6), and is electrically connected by a connecting portion, wherein the connecting portion includes a graphene layer (4) disposed on a polymer layer, which graphene layer (4) provides an electrical connection between the first plug (1) and the second plug (2).

Abstract: The present invention is a signal cable for transmitting the signal between the transmitter and the receiver, providing an electrical connection by a connecting part, wherein said connecting portion comprises a layer of graphene disposed on a polymer layer, characterized in that it comprises two conductors, wherein each conductor includes a connecting portion arranged in a protective insulating layer (3) and the coupling portion takes the form of a tape, in which the graphene layer (1) is disposed between two polymer layers (2).

Abstract: The present invention is the security element for sensitive documents characterized in that it includes at least one graphene layer arranged on a polymer layer where the graphene layer is heterogeneous and forms a pattern characterized by different levels of absorption of electromagnetic radiation, especially infrared radiation, visible light radiation or ultraviolet light passing through the pattern at its various points.

Abstract: A tester is described for detecting a graphene security element in a secure document, such as a banknote, an identification card, etc. as well as a method for detection of that element. In the tester the light emitter, the reflective/transreflective element and the photodetector are arranged in the measuring slot in such a way that detection of the level of absorption and/or refraction of light passing through a graphene security element is possible and the measurement result when compared with the model provides a basis for generation of a message about the detection result, i.e. the confirmation of authenticity of a security document or information that the document is counterfeited. The tester can preferably be used in combination with a mobile device, such as a smartphone, which together form the measuring system.

Abstract: A graphene microphone preamplifier is a minimalist design working in class A with large quiescent current in a push-pull configuration, with automatic balancing of voltage imbalance.

Abstract: The present invention is an electronic circuit of a microprocessor of a proximity document, including the microprocessor, the transceiver antenna and the touch switch, characterized in that the switch includes an active graphene element, where the switch contacts are led to the surface of the document and so are electrically connected to the microprocessor and the antenna that touches them closes the circuit and allows communication between the microprocessor and the antenna, while in the opposite case the circuit is opened, and the communication between the microprocessor and the antenna is not possible. The invention further includes the proximity document containing such an electronic circuit.

Abstract: A tester is described for detecting a graphene security element in a secure document, such as a banknote, an identification card, etc. as well as a method for detection of that element. In the tester the light emitter, the reflective/transreflective element and the photodetector are arranged in the measuring slot in such a way that detection of the level of absorption and/or refraction of light passing through a graphene security element is possible and the measurement result when compared with the model provides a basis for generation of a message about the detection result, i.e. the confirmation of authenticity of a security document or information that the document is counterfeited. The tester can preferably be used in combination with a mobile device, such as a smartphone, which together form the measuring system.

Abstract: A graphene microphone preamplifier is a minimalist design working in class A with large quiescent current in a push-pull configuration, with automatic balancing of voltage imbalance.

Abstract: The present invention is a security feature against counterfeiting, in particular for high-value products, having a graphic code disposed on a graphene nanocomposite material layer, the graphene nanocomposite material layer having at least one layer of graphene (G-DG) disposed on an adhesive layer (P), preferably a polymer. The invention also includes a system and method for authenticating a product using such a feature.

Abstract: A tester is described for detecting a graphene security element in a secure document, such as a banknote, an identification card, etc. as well as a method for detection of that element. In the tester the light emitter, the reflective/transreflective element and the photodetector are arranged in the measuring slot in such a way that detection of the level of absorption and/or refraction of light passing through a graphene security element is possible and the measurement result when compared with the model provides a basis for generation of a message about the detection result, i.e. the confirmation of authenticity of a security document or information that the document is counterfeited. The tester can preferably be used in combination with a mobile device, such as a smartphone, which together form the measuring system.

Abstract: Embodiments of the present invention provide a capacitor that includes two electric cladding elements with at least one graphene layer. The two electric cladding elements are separated by a layer of electrically insulating polymer. The layer of electrically insulating polymer is in a form of a wound tape arranged in a housing, wherein each of the electric cladding elements is electrically connected to electrical connectors led through an external casing. The present invention also encompasses the use of such a capacitor as an important element of electronic circuitry in audio systems.

Abstract: The present invention is a security feature against counterfeiting security printing, in particular banknotes, having at least one graphene quantum dot (GQD) that has a graphene nanoparticle diameter ranging from 0.5 nm to 60 nm, and containing from 1 to 90 layers of graphene disposed in the flexible layer of graphene nanocomposite material, where the elastic layer of graphene nanocomposite material comprises at least one layer of graphene arranged on the adhesive layer. The invention also includes the use of the security feature according to the invention, and a method and system for verifying the authenticity of security printing.

Abstract: The present invention is a signal cable for transmitting the signal between the transmitter and the receiver, providing an electrical connection by a connecting part, wherein said connecting portion comprises a layer of graphene disposed on a polymer layer, characterised in that it comprises two conductors, wherein each conductor includes a connecting portion arranged in a protective insulating layer (3) and the coupling portion takes the form of a tape, in which the graphene layer (1) is disposed between two polymer layers (2).

Abstract: A system and process for the gasification of waste, particularly household waste, in an apparatus comprising a gasification system for waste treatment and gasifier.

Abstract: Embodiments of the present invention provide a condenser microphone with a movable lining and a fixed lining. The movable lining and the fixed lining are respectively connected to a power supply and an amplifier. The movable lining includes graphene (G), formed at least as one graphene layer, while the fixed pad is formed as a fixed plate.

Abstract: An electronic system of a hybrid amplifier is described, especially electroacoustic hybrid amplifier comprising a tube voltage amplifier, a tube isolating repeater, a power repeater, and a power repeater power supply, a voltage amplifier power supply, and an isolating repeater power supply.

Abstract: A security chip against counterfeiting, especially for banknotes and other documents (e.g. pre-numbered forms), enabling the verification of the authenticity of a document.