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    • 5. 发明授权
    • System for measuring the concentration of chemical substances
    • 用于测量化学物质浓度的系统
    • US4397714A
    • 1983-08-09
    • US159994
    • 1980-06-16
    • Jiri JanataRobert J. HuberRosemary L. Smith
    • Jiri JanataRobert J. HuberRosemary L. Smith
    • G01N27/414G01N27/26
    • G01N27/4148
    • A solid state chemically sensitive integrated circuit includes three field-effect transistors (FETs) fabricated on a single semiconductor substrate. The gate of a first FET is overlaid with a chemically sensitive element that is adapted to create an electrochemical potential at the gate when exposed to selected chemical substances. This gate is also electrically connected to the source of a second FET and the drain of a third FET. The second and third FETs are used as switches to selectively connect the gate of the first FET to ground, to an external reference potential, or to isolate it from all external signals. In the latter case, only the interaction between the chemically sensitive element and external chemical substances may affect the first FET's operation thus allowing the first FET, when so isolated, to provide a measure of the chemical properties of the substance to which its chemically sensitive element is exposed. The presence of the second and third FETs allows the first FET to be protected from static shock during routine handling and when the device is not in use. They also allow the performance of the first FET to be fully characterized by permitting a controlled gate voltage to be applied to the first FET.
    • 固体化学敏感集成电路包括制造在单个半导体衬底上的三个场效应晶体管(FET)。 第一FET的栅极覆盖有化学敏感元件,其适于在暴露于选定的化学物质时在栅极处产生电化学电位。 该栅极也电连接到第二FET的源极和第三FET的漏极。 第二和第三FET用作选择性地将第一FET的栅极接地,连接到外部参考电位或将其与所有外部信号隔离的开关。 在后一种情况下,只有化学敏感元件与外部化学物质之间的相互作用可能会影响第一FET的操作,从而允许第一FET在这样隔离时提供其化学敏感元件的化学性质的量度 被暴露。 第二和第三FET的存在允许在常规处理期间以及当器件不使用时,保护第一FET免受静电冲击。 它们还允许通过允许将受控的栅极电压施加到第一FET来完全表征第一FET的性能。
    • 6. 发明授权
    • Nonvolatile SNOS memory cell with induced capacitor
    • 具有感应电容器的非易失性SNOS存储单元
    • US5020030A
    • 1991-05-28
    • US265409
    • 1988-10-31
    • Robert J. Huber
    • Robert J. Huber
    • G11C14/00H01L27/108H01L27/115H01L29/792
    • H01L27/115G11C14/00H01L27/108H01L29/792
    • A silicon substrate with a drain area formed therein is used for the base of the device. A first polysilicon gate is disposed above the substrate with a layer of gate oxide therebetween. Adjacent to the first gate and contiguous to the same plane is a second polysilicon gate. The second gate and the substrate are separated by a layer of tunnel oxide and silicon nitride. The silicon nitride being used to store a charge. The state of the device is determined by the presence of a capacitance in the substrate generated by the charge on the silicon nitride. This device may function as a nonvolatile memory or a dynamic random access memory with the capability of capturing its DRAM state.
    • 其中形成有漏极区的硅衬底用于器件的基底。 第一多晶硅栅极设置在衬底上方,其间具有一层栅极氧化物。 与第一个栅极相邻并且与相同的平面邻接的是第二个多晶硅栅极。 第二栅极和衬底被隧道氧化物层和氮化硅层隔开。 用于存储电荷的氮化硅。 器件的状态由在氮化硅上的电荷产生的衬底中的电容的存在来确定。 该装置可以用作具有捕获其DRAM状态的能力的非易失性存储器或动态随机存取存储器。
    • 7. 发明授权
    • Chemical selective sensors utilizing admittance modulated membranes
    • 采用导纳调制膜的化学选择传感器
    • US4776944A
    • 1988-10-11
    • US92159
    • 1987-09-01
    • Jiri JanataRobert J. HuberMichael Thompson
    • Jiri JanataRobert J. HuberMichael Thompson
    • G01N27/414G01N27/30
    • G01N27/4035
    • A chemical selective sensor system utilizes admittance modulated to detect the presence of chemicals or chemical species in a fluid. The sensor system includes a film or membrane adapted to pass ions when selected chemicals which are to be detected are present at the membrane surface. The membrane is attached to a hydrophilic layer of material which, in turn, is attached to a transformed layer which is deposited on a base substrate. When the selected chamicals are present in the fluid, the membrane interacts with the chemicals to allow ions, also in the fluid, to permeate the membrane. This ion current in the membrane is transformed or converted by the transformer layer to an electronic current which is measured by an electrical circuit coupled to the transformer layer of material. An alternating current source is coupled at one terminal to the transformer layer and to the measuring circuit, and at another terminal to a circuit return electrode.
    • 化学选择性传感器系统利用调制的导纳来检测流体中化学物质或化学物质的存在。 传感器系统包括当要检测的选定化学物质存在于膜表面时适于通过离子的膜或膜。 膜附着到亲水层材料上,该亲水层又连接到沉积在基底基底上的转化层。 当所选择的腔室存在于流体中时,膜与化学物质相互作用以允许离子(也在流体中)渗透到膜中。 膜中的离子电流被变压器层转换或转换成电流,该电流由耦合到材料的变压器层的电路测量。 交流电源在一个端子处耦合到变压器层和测量电路,并且在另一端子耦合到电路返回电极。