摘要:
The invention relates to a circuit arrangement, a sensor array and a biosensor array. The circuit arrangement comprises a substrate, a sensor element configured on a surface area of the substrate with a physical parameter which can be coupled to a substance to be analyzed; The type of coupling comprises a resistive component and a calibrating device embodied in or on the substrate and arranged in such a way that a modification of the value of the physical parameter of the sensor element can be at least partially compensated therewith. Preferably, the sensor element of the circuit arrangement is provided with an electrically conductive sensor electrode which can be coupled to the substance to be analyzed. The sensor element can also comprise a measuring transistor with a gate connection which is coupled to the electrically conductive sensor electrode.
摘要:
The invention relates to a device for measuring the activity of neuronal networks using a structured semiconductor substrate comprising a plurality of sensor elements which respectively have at least one electroconductive detection electrode (E) arranged on the surface of the semiconductor substrate for the detection of neuronal signals of the neuronal network. Said sensor elements are arranged in such a way that electrical sensor output signals can be emitted by means of respective sensor outputs (SA) of the sensor elements, according to the detected neuronal signals. The semiconductor substrate also comprises a plurality of amplifying elements (V; TKV) which respectively comprise at least one amplifier input and at least one amplifier output (VA). An amplifying element (V; TKV) is associated with each sensor element, the amplifier input of the amplifying element being electrically connected to the sensor output (SA) of the respective sensor element, and the amplified sensor output signal can be emitted by means of the amplifier output (VA) as an amplifier output signal. Said semiconductor substrate further comprises at least one activity evaluation device comprising at least one evaluation input and at least one evaluation output, the evaluation input (digital out; analog out) being electrically connected to at least one of the amplifier outputs (VA). The activity evaluation device is arranged in such a way that, according to the amplifier output signal, it generates an activity signal which is a measure for the activity of the neuronal network, and emits the same by means of the evaluation output.
摘要:
The invention relates to a device, especially for patch-clamping vesicles and/or for dispensing small, defined liquid amounts onto surfaces. The device is characterized in that in a substrate (2) at least one pipette in the form of a through hole (8) with a predetermined diameter is produced, a rim (16) of the through hole (8) protruding from a neighboring surface (4) of the substrate (2) by a predetermined length. The invention further relates to a method for producing the device, comprising the following steps: producing at least one hole (8), forming at least one modified surface layer (12) on at least the inner surfaces of the hole (8), selectively removing the substrate (2), the modified surface layer (12) not being substantially affected so that it protrudes from a surface (4) of the substrate and forms a protruding rim (16), and finishing the hole (8) as a through hole in a suitable process step.
摘要:
The invention relates to a biochip for capacitive stimulation and/or detection of biological tissue (14), having a carrier structure (10), at least one stimulation and/or sensor device that is arranged in or on the carrier structure (10), at least one dielectric layer (12), one of the surfaces of said layer being arranged in the stimulation and/or sensor device while the opposite surface of said layer forms a stimulation and/or sensor surface for capacitive stimulation and/or detection of biological tissue (14), wherein the dielectric layer (12) contains TiO2.
摘要:
The invention relates to a fluorescence biosensor chip and to a fluorescence biosensor chip arrangement. Said fluorescence biosensor chip comprises a substrate, at least one detection device which is arranged in or on the substrate and is used to detect electromagnetic radiation, an optical filter layer which is arranged on the substrate, and an immobilisation layer which is arranged on the optical filter layer and is used to immobilise trap molecules. Said detection device, optical filter layer and immobilisation layer are integrated into the fluorescence biosensor chip. The inventive fluorescence biosensor chip arrangement comprises a fluorescence biosensor chip and an electromagnetic source of radiation.
摘要:
According to the invention, a plurality of cumulative current flows fulfilling a pre-determined selection criterion can be determined from detected cumulative current flows. At least one cumulative current flow fulfilling a pre-determined second selection criterion can be selected from the determined cumulative current flows, as a cumulative current flow representing a sensor signal. The sensor element to which a sensor signal is applied is determined from the selected cumulative current flow.
摘要:
The invention relates to a circuit arrangement, a sensor array and a biosensor array. The circuit arrangement comprises a substrate, a sensor element configured on a surface area of the substrate with a physical parameter which can be coupled to a substance to be analyzed; The type of coupling comprises a resistive component and a calibrating device embodied in or on the substrate and arranged in such a way that a modification of the value of the physical parameter of the sensor element can be at least partially compensated therewith. Preferably, the sensor element of the circuit arrangement is provided with an electrically conductive sensor electrode which can be coupled to the substance to be analyzed. The sensor element can also comprise a measuring transistor with a gate connection which is coupled to the electrically conductive sensor electrode.
摘要:
The invention relates to a device, especially for patch-clamping vesicles and/or for dispensing small, defined liquid amounts onto surfaces. The device is characterized in that in a substrate (2) at least one pipette in the form of a through hole (8) with a predetermined diameter is produced, a rim (16) of the through hole (8) protruding from a neighboring surface (4) of the substrate (2) by a predetermined length. The invention further relates to a method for producing the device, comprising the following steps: producing at least one hole (8), forming at least one modified surface layer (12) on at least the inner surfaces of the hole (8), selectively removing the substrate (2), the modified surface layer (12) not being substantially affected so that it protrudes from a surface (4) of the substrate and forms a protruding rim (16), and finishing the hole (8) as a through hole in a suitable process step.