Abstract: A method for manufacturing a biological field-effect transistor (BioFET) is disclosed. In some implementations, the method may include preparing a carbonaceous dispersion by adding a three-dimensional (3D) graphene into a solvent; depositing the carbonaceous dispersion onto a p-type silicon wafer; spin-coating a positive photoresist over the carbonaceous dispersion; forming source and drain terminals on the p-type silicon wafer, the source and drain terminals in contact with the 3D graphene of the carbonaceous dispersion; removing residual photoresist from the carbonaceous dispersion by placing the p-type silicon wafer in 1-methyl-2-pyrrolidone (NMP); and biofunctionalizing the carbonaceous dispersion with a molecular recognition element configured to alter one or more electrical properties of the Bio-FET in response to exposure of the molecular recognition element to the analyte.

Abstract: A biological field-effect transistor (BioFET) includes source and drain regions formed in a substrate, an insulating layer disposed on a surface of the substrate, a gate disposed on the insulating layer and extending between the source and drain regions, a well region containing an electrolyte solution configured to retain an analyte, a three-dimensional (3D) graphene layer forming a channel region in the substrate, and a passivation layer. The graphene layer is biofunctionalized with a molecular recognition element configured to alter one or more electrical properties of the 3D graphene layer in response to exposure of the molecular recognition element to the analyte. The passivation layer is configured to prevent the electrolyte solution from contacting the source and drain. In some aspects, the 3D graphene layer is produced from carbon-containing inks. In other aspects, the 3D graphene layer includes a convoluted 3D structure configured to prevent graphene restacking.

Abstract: Methods for detecting analytes using a biological field-effect transistor (BioFET) are disclosed. In some implementations, the method includes exposing a three-dimensional (3D) graphene layer biofunctionalized with a biological recognition element to a target analyte, providing a well region containing an electrolyte solution configured to retain the target analyte, allowing the target analyte to disperse throughout the electrolyte solution and bind with the biological recognition element, detecting a change in electrical properties of the 3D graphene layer in response to the target analyte binding with the biological recognition element, determining a presence of the target analyte based on the change in electrical properties, and outputting an indication of the determined presence of the target analyte. In some aspects, the 3D graphene layer may operate as a channel for the BioFET.

Abstract: A method for manufacturing a biological field-effect transistor (BioFET) is disclosed. In some implementations, the method may include preparing a carbonaceous dispersion by adding a three-dimensional (3D) graphene into a solvent; depositing the carbonaceous dispersion onto a p-type silicon wafer; spin-coating a positive photoresist over the carbonaceous dispersion; forming source and drain terminals on the p-type silicon wafer, the source and drain terminals in contact with the 3D graphene of the carbonaceous dispersion; removing residual photoresist from the carbonaceous dispersion by placing the p-type silicon wafer in 1-methyl-2-pyrrolidone (NMP); and biofunctionalizing the carbonaceous dispersion with a molecular recognition element configured to alter one or more electrical properties of the Bio-FET in response to exposure of the molecular recognition element to the analyte.

Abstract: A modular multi-accessory foregrip configured to mount on a rail on a weapon. The modular foregrip includes a grip assembly and a tang or center shaft. The grip assembly configured to be removably coupled with the tang. In some embodiments, the modular foregrip having a power supply disposed in the tang. In some embodiments, the grip assembly comprising two or more component grips, each with a different accessory. In some embodiments, one of the grips has a switch to control power in an accessory in that grip and a second switch to control power to an accessory in another grip.

Abstract: A laser sighting device for a firearm and a method for mounting a laser sighting device on a firearm. A laser sighting device for a firearm comprises a holder adapted to attach to the handgrip of the firearm such that the firearm may be held in a firing position by the handgrip with the device installed thereon, the holder including a first compartment for receiving a laser and holding the laser so as to propagate a beam of light substantially in the muzzle direction of the firearm, and a second compartment for receiving a battery to power the laser, a switch for activation of the laser by the user's hand holding the handgrip in firing position, and an electrical circuit disposed within the holder for interconnecting a laser disposed in the first compartment, a battery disposed in the second compartment and the switch.

Abstract: A laser sighting device for a firearm and a method for mounting a laser sighting device on a firearm. A laser sighting device for a firearm comprises a holder adapted to attach to the handgrip of the firearm such that the firearm may be held in a firing position by the handgrip with the device installed thereon, the holder including a first compartment for receiving a laser and holding the laser so as to propagate a beam of light substantially in the muzzle direction of the firearm, and a second compartment for receiving a battery to power the laser, a switch for activation of the laser by the user's hand holding the handgrip in firing position, and an electrical circuit disposed within the holder for interconnecting a laser disposed in the first compartment, a battery disposed in the second compartment and the switch.

Abstract: A compact laser aiming assembly for a firearm. A laser module having a front and a back is adapted to be rotatably seated in a socket having a window therein. The front of the module has a bearing with a convex, curved front surface and a window therein, and the laser module is adapted to support a laser in back of the bearing so that when the front of the bearing is seated in the socket, a beam of light emitted from the laser propagates through the window in the front of the laser module and through the window in the socket. A socket, having a front and a back and a window therein, is also provided. The back has a concave surface formed therein, the bearing of the laser module being seated in the socket, and the socket further has an adjustment mechanism coupled to the socket and the laser module for rotating the laser module in the socket so as to aim the beam of light.

Abstract: A laser sighting device for a firearm and a method for mounting a laser sighting device on a firearm. A laser sighting device for a firearm comprises a holder adapted to attach to the handgrip of the firearm such that the firearm may be held in a firing position by the handgrip with the device installed thereon, the holder including a first compartment for receiving a laser and holding the laser so as to propagate a beam of light substantially in the muzzle direction of the firearm, and a second compartment for receiving a battery to power the laser, a switch for activation of the laser by the user's hand holding the handgrip in firing position, and an electrical circuit disposed within the holder for interconnecting a laser disposed in the first compartment, a battery disposed in the second compartment and the switch.

Abstract: A laser sighting device for a firearm and a method for mounting a laser sighting device on a firearm. A laser sighting device for a firearm comprises a holder adapted to attach to the handgrip of the firearm such that the firearm may be held in a firing position by the handgrip with the device installed thereon, the holder including a first compartment for receiving a laser and holding the laser so as to propagate a beam of light substantially in the muzzle direction of the firearm, and a second compartment for receiving a battery to power the laser, a switch for activation of the laser by the user's hand holding the handgrip in firing position, and an electrical circuit disposed within the holder for interconnecting a laser disposed in the first compartment, a battery disposed in the second compartment and the switch.

Abstract: A compact laser aiming assembly for a firearm. A laser module having a front and a back is adapted to be rotatably seated in a socket having a window therein. The front of the module has a bearing with a convex, curved front surface and a window therein, and the laser module is adapted to support a laser in back of the bearing so that when the front of the bearing is seated in the socket, a beam of light emitted from the laser propagates through the window in the front of the laser module and through the window in the socket. A socket, having a front and a back and a window therein, is also provided. The back has a concave surface formed therein, the bearing of the laser module being seated in the socket, and the socket further has an adjustment mechanism coupled to the socket and the laser module for rotating the laser module in the socket so as to aim the beam of light.

Abstract: A system for actuating an accessory mounted on a weapon with the sighting light beam generated by a laser sighting device. A light probe, adapted to be mounted on the weapon proximate the optical pathway of a sighting beam of light generated by a laser sighting device, is provided for detecting the sighting beam and producing in response thereto an electrical detection signal. An actuation circuit, adapted to be mounted on the weapon, is provided for receiving the detection signal and, in response thereto, actuating an electrical accessory mounted on the weapon. An ambient light sensor is provided for receiving ambient light and producing an electrical reference signal. The actuation circuit includes a comparator for comparing the detection signal to the ambient light signal and actuating a flashlight or other accessory when the detection signal passes the reference signal by a predetermined amount. The system inhibits the accessory when the ambient light passes a predetermined intensity.

Abstract: A system for actuating an accessory mounted on a weapon with the sighting light beam generated by a laser sighting device. A light probe, adapted to be mounted on the weapon proximate the optical pathway of a sighting beam of light generated by a laser sighting device, is provided for detecting the sighting beam and producing in response thereto an electrical detection signal. An actuation circuit, adapted to be mounted on the weapon, is provided for receiving the detection signal and, in response thereto, actuating an electrical accessory mounted on the weapon. An ambient light sensor is provided for receiving ambient light and producing an electrical reference signal. The actuation circuit includes a comparator for comparing the detection signal to the ambient light signal and actuating a flashlight or other accessory when said detection signal passes said reference signal by a predetermined amount. The system inhibits the accessory when the ambient light passes a predetermined intensity.

Abstract: A system for actuating an accessory mounted on a weapon with the sighting light beam generated by a laser sighting device. A light probe, adapted to be mounted on the weapon proximate the optical pathway of a sighting beam of light generated by a laser sighting device, is provided for detecting the sighting beam and producing in response thereto an electrical detection signal. An actuation circuit, adapted to be mounted on the weapon, is provided for receiving the detection signal and, in response thereto, actuating an electrical accessory mounted on the weapon. An ambient light sensor is provided for receiving ambient light and producing an electrical reference signal. The actuation circuit includes a comparator for comparing the detection signal to the ambient light signal and actuating a flashlight or other accessory when said detection signal passes said reference signal by a predetermined amount. The system inhibits the accessory when the ambient light passes a predetermined intensity.

Abstract: A system for actuating an accessory mounted on a weapon with the sighting light beam generated by a laser sighting device. A light probe, adapted to be mounted on the weapon proximate the optical pathway of a sighting beam of light generated by a laser sighting device, is provided for detecting the sighting beam and producing in response thereto an electrical detection signal. An actuation circuit, adapted to be mounted on the weapon, is provided for receiving the detection signal and, in response thereto, actuating an electrical accessory mounted on the weapon. An ambient light sensor is provided for receiving ambient light and producing an electrical reference signal. The actuation circuit includes a comparator for comparing the detection signal to the ambient light signal and actuating a flashlight or other accessory when said detection signal passes said reference signal by a predetermined amount. The system inhibits the accessory when the ambient light passes a predetermined intensity.