摘要:
The present invention provides a device for the detection of a peroxide-based explosive, in particular, triacetone triperoxide (TATP), which is based on a molecular controlled semiconductor resistor (MOCSER) and composed of at least one insulating or semi-insulating layer, at least one conducting semiconductor layer, two conducting pads and a layer of multifunctional organic molecules capable of adsorbing molecules of the peroxide-based explosive. The invention further provides an array of semiconductor devices for the selective detection of a peroxide-based explosive, as well as a method for the selective detection of vapors of a peroxide-based explosive in a gaseous mixture using this array.
摘要:
A device for the detection of a peroxide-based explosive, in particular, triacetone triperoxide (TATP), which is based on a molecular controlled semiconductor resistor (MOCSER) and composed of at least one insulating or semi-insulating layer, at least one conducting semiconductor layer, two conducting pads and a layer of multifunctional organic molecules capable of adsorbing molecules of said peroxide-based explosive. Further is provided an array of semiconductor devices for the selective detection of a peroxide-based explosive, as well as a method for the selective detection of vapors of a peroxide-based explosive in a gaseous mixture using said array. The multifunctional organic molecules are from the group of cyclodextrins, thiols or alkylphosphonates with RPO(OH) 2 wherein R is an aliphatic hydrocarbyl with C6-C22.
摘要:
The invention provides a semiconductor device for the detection of an active site-containing protein or a ligand thereof in a solution, said device comprising at least one insulating or semi-insulating layer; at least one conducting semiconductor layer, two conducting pads on top of the upper layer making electrical contact with said at least one conducting semiconductor layer, such that electrical current can flow between them at a finite distance from the surface of the device; a protective molecular layer fabricated on top of said upper layer and protecting said layer from corrosion; and said ligand or active site-containing protein linked to said protective molecular layer. Exposure of said ligand or active site-containing protein to a solution containing said active site-containing protein or ligand, respectively, causes a current change through the device when a constant electric potential is applied between the two conducting pads. The semiconductor device can be seen as a molecularly controlled semiconductor resistor (MOCSER) protein sensor based on doped and undoped GaAs stack structure. The GaAs is protected against etching in aqueous environments by the protective molecular layer.
摘要:
The invention provides a semiconductor device for the detection of an active site-containing protein or a ligand thereof in a solution, said device comprising at least one insulating or semi-insulating layer; at least one conducting semiconductor layer, two conducting pads on top of the upper layer making electrical contact with said at least one conducting semi-conductor layer, such that electrical current can flow between them at a finite distance from the surface of the device; a protective molecular layer fabricated on top of said upper layer and protecting said layer from corrosion; and said ligand or active site-containing protein linked to said protective molecular layer. Exposure of said ligand or active site-containing protein to a solution containing said active site-containing protein or ligand, respectively, causes a current change through the device when a constant electric potential is applied between the two conducting pads. The semi-conductor device can be seen as a molecularly controlled semiconductor resistor (MOCSER) protein sensor based on doped and undoped GaAs stack structure. The GaAs is protected against etching in aqueous environments by the protective molecular layer.
摘要:
A device and method are presented for implementing one or more logic functions. The device comprises one or more basic blocks, each comprising a predetermined number of charged particle inputs, at least one interaction zone defining a function space, and at least one charged particle output at a certain distance from the interaction zone. The logic function is a result of an affected interaction between the charged particles.
摘要:
An electronic device is presented which is configured to operate as at least one logic gate. The device comprises an electrodes arrangement of one or more basic units, the basic unit being configured to define at least one vacuum space for free charged particles' propagation and comprising an input assembly for supplying an input signal, and a floating electrode assembly accommodated proximal said input assembly and serving for reading an output signal therefrom, the floating electrode arrangement being configured to define at least one source of the free charged particles and at least one target toward which the charged particles are directed and is chargeable and dischargeable in response to the input signal thereby creating the output of the basic unit.
摘要:
A device and method are presented for use in measuring photon energy. The device comprises at least one pixel unit (10) including a Photocathode (12) that emits electrons in response to absorbed photons; an Anode (14); and a control unit (19) operable for controlling an electric current from the Photocathode (12) to the Anode (14) so as to selectively prevent electrons' arrival to the Anode (14) to thereby scan a spectrum of photon energies incident on the Photocathode (12).
摘要:
An analog real-time signal processing device and method are presented. The device is configured to perform electrical signal processing. The device comprises an electronic circuit including at least one basic unit of electrodes, the basic unit being configured to be sensitive to an external field, such as input photon flux, indicative of a first input signal to cause emission of charged particles and configured to define at least one electrical input for a second input signal and one electrical output, thereby providing the electrical output in the form of an approximation of a product of the first and second input signals.
摘要:
An electrons' emission device is presented. The device comprises an electrodes' arrangement including at least one Cathode electrode and at least one Anode electrode, the Cathode and Anode electrodes being arranged in a spaced-apart relationship; the device being configured to expose said at least one Cathode electrode to exciting illumination to thereby cause electrons' emission from said Cathode electrode, the device being operable as a photoemission switching device.
摘要:
An analog real-time signal processing device and method are presented. The device is configured to perform electrical signal processing. The device comprises an electronic circuit including at least one basic unit of electrodes, the basic unit being configured to be sensitive to an external field, such as input photon flux, indicative of a first input signal to cause emission of charged particles and configured to define at least one electrical input for a second input signal and one electrical output, thereby providing the electrical output in the form of an approximation of a product of the first and second input signals.