摘要:
A method of observing reaction intermediaries during a chemical reaction and comprising detecting an electrical signal output from an ion sensitive field effect transistor exposed to said reaction, and monitoring the detected electrical signal to discriminate discrete fluctuations in the electrical signal, the discrete fluctuations indicating reaction intermediaries occurring during a chemical reaction.
摘要:
Use of a pH sensor comprising an ion-sensitive field effect transistor (ISFET) to perform real time detection/quantification of nucleic acid amplification, e.g. polymerase chain reaction (PCR) nucleic acid amplification, based on detection of protons released during the primer extension phase.
摘要:
A method of observing reaction intermediaries during a chemical reaction and comprising detecting an electrical signal output from an ion sensitive field effect transistor exposed to said reaction, and monitoring the detected electrical signal to discriminate discrete fluctuations in the electrical signal, the discrete fluctuations indicating reaction intermediaries occurring during a chemical reaction.
摘要:
Use of a pH sensor comprising an ion-sensitive field effect transistor (ISFET) to perform real time detection/quantification of nucleic acid amplification, e.g. polymerase chain reaction (PCR) nucleic acid amplification, based on detection of protons released during the primer extension phase.
摘要:
A method of observing reaction intermediaries during a chemical reaction and comprising detecting an electrical signal output from an ion sensitive field effect transistor exposed to said reaction, and monitoring the detected electrical signal to discriminate discrete fluctuations in the electrical signal, the discrete fluctuations indicating reaction intermediaries occurring during a chemical reaction.
摘要:
A sensing apparatus comprising an ion sensitive field effect transistor arranged to generate an electrical output signal in response to localized fluctuations of ionic charge at or adjacent the surface of the transistor, and means for detecting the electrical output signal from the ion sensitive field effect transistor, the localized fluctuations of ionic charge indicating events occurring during a chemical reaction.
摘要:
A sensing apparatus comprising an ion sensitive field effect transistor arranged to generate an electrical output signal in response to localized fluctuations of ionic charge at or adjacent the surface of the transistor, and means for detecting the electrical output signal from the ion sensitive field effect transistor, the localized fluctuations of ionic charge indicating events occurring during a chemical reaction.
摘要:
A method of optically outputting information (e.g. digital data) from a semiconductor device, the method comprising: providing a semiconductor device having a semiconducting p-n junction, the p-n junction having a region of reduced free charge carrier density; applying an electrical signal to modulate the extent of the said region, the electrical signal being representative of the information to be outputted; arranging incident light to pass through at least part of the said region, such that the light is at least partially absorbed in dependence upon the modulated extent of the said region, thereby producing intensity-modulated output light; and detecting the intensity of the output light and thereby determining the outputted information. Also provided is an electro-optical assembly, a package module for mounting a semiconductor device on a printed circuit board, and an integrated circuit chip.
摘要:
An amplifier stage suitable for current conveyors and current mode feedback operational amplifiers has low input resistance and operates at low power. The amplifier stage comprises a buffer having inverting and non-inverting inputs and a pair of current outputs, and a pair of multiple output current mirrors which operate in conjunction with the buffer to generate an output current at a high gain node in response to an input signal applied to the buffer inputs. Each multiple output current mirror has a low impedance current input for receiving current signals generated by the buffer and multiple high impedance current outputs for providing current feedback to the inverting input of the buffer and output current to the high gain node of the amplifier stage. The magnitudes of the feedback and output currents are determined by the resistances of current scaling resistors associated with the low impedance current input and each of the high impedance current outputs.
摘要:
A sensor system comprising a substrate and integrated onto the substrate an array (7) of sensor elements (1), each sensor element comprising one or more inductors (3), one or more electrochemical sensors (4), and one or more optical sensors (2). The system further comprising a controller configured in use to separately address each of the sensor elements (1) to drive the respective inductors and receive outputs of the respective sensors.