A ChemFET is a chemically-sensitive field-effect transistor, that is a field-effect transistor used as a sensor for measuring chemical concentrations in solution. [1] When the target analyte concentration changes, the current through the transistor will change accordingly. [2] Here, the analyte solution separates the source and gate electrodes. [3]

2002年11月7日 · Chemically sensitive field-effect transistors (ChemFETs), among the smallest chemical sensors available to-date, are attractive for use in integrated systems.

2023年4月13日 · This work focuses on the fabrication and characterization of ChemFET (Chemical Field-Effect Transistor) gas nanosensor arrays based on single nanowire (SNW). The fabrication processes include micro and nanofabrication techniques enabled by a combination of ultraviolet (UV) and e-beam lithography to build the ChemFET structure.

2024年11月10日 · Inspired by these anion-selective interactions, we tested the performance of Cu(TA) 2 nanoparticles as chemical field effect transistor (ChemFET) anion sensors. Rather than size-based selectivity, the detection limits of the devices exhibit a Hofmeister trend, with the greatest sensitivity towards anions perchlorate, iodide, and nitrate.

2022年10月27日 · History, failures, successes and potential of Chemically Sensitive Field Effect Transistors (CHEMFET) are presented, based on fifty years of Author's personal experience working in this field. This article is divided into operation of devices in …

使用场效应晶体管检出气体、离子、分子、水分等化学成分的传感器。 当场效应化学传感器与外界化学物质接触时，在场效应晶体管的绝缘层与溶液（或气体）的界面形成双电层。 这种双电层所产生的电场能够引起半导体表面导电性能的变化，因此可用于检测化学物质的量。 chemical sensor using field effect transistor. 氢敏场效应晶体管. 用具有催化活性的金属，如钯 (Pd)等，作为金属-氧化物-半导体场效应晶体管的 栅极 金属，可制成一种新型氢敏器件钯栅金属-氧化物-半导体场 …

2023年7月1日 · Compared to above mentioned modalities, chemical sensors viz. chemiresistive and chemically-sensitive field-effect transistor (Chem-FET) rely on the change of electrical properties upon exposure to analytes, offering the advantages of being cost-effective, versatile, low power consumption and easy to operate.

FET (ISFET) are two important examples of ChemFET transducers. In the Pd gate FET transducer the aluminum gate electrode is replaced by a Pd gate. Molecular hydrogen (measurand), in the air or by itself, is absorbed at the Pd surface, where it undergoes a catalytic dissociation into atomic hydrogen (Ha).

2021年3月17日 · ChemFET 是包含气体选择性涂层或在其晶体管栅极和被分析物之间具有一系列涂层的化学场效应晶体管（图 11 ）。 这种化学组件使该器件具有与选定的化学品种相关联的调节源 - 漏导电性的控制输入。

Chemically-sensitive field effect transistors (CHEMFETS), modified with, for example, an ionophore embedde in an organic membrane, or with a biological receptor, are reviewed.