公开(公告)号：WO1996017693A1

公开(公告)日：1996-06-13

申请号：PCT/US1995015605

申请日：1995-12-08

Applicant: SENOVA CORPORATION

Inventor： SENOVA CORPORATION ,  BAO, Quingcheng ,  SORENSEN, Ian ,  GLAUNSINGER, William

IPC: B05D05/12

CPC classification number: G01M3/045 ,  C23C8/10 ,  C23C26/00 ,  G01N27/12 ,  G01N33/0052

Abstract: A thin film device having a selectively passivated surface (16) is provided. An embodiment of the device is particularly suited to detection of chemical constituents by selective adsorption, where the selectively passivated surface (16) is inert to the chemical constituent being detected. A method of fabrication of the device is also provided in which the selective passivation is achieved by selectively applying the metallic adhesive (14) to the substrate (12). The migration of the metallic adhesive (14) through the thin film layer (16) is essentially normal to the surface of the substrate (12), thereby limiting the passivation of the thin film layer (16) to the surface areas directly overlying the metallic adhesive (14).

Abstract translation: 提供了具有选择性钝化表面（16）的薄膜装置。 该装置的一个实施方案特别适用于通过选择性吸附来检测化学成分，其中选择性钝化的表面（16）对被检测的化学成分是惰性的。 还提供了一种制造该器件的方法，其中通过选择性地将金属粘合剂（14）施加到基底（12）来实现选择性钝化。 金属粘合剂（14）穿过薄膜层（16）的迁移基本上垂直于基底（12）的表面，由此限制薄膜层（16）的钝化直接覆盖金属 粘合剂（14）。

公开(公告)号：WO1996019724A1

公开(公告)日：1996-06-27

申请号：PCT/US1995016230

申请日：1995-12-21

Applicant: SENOVA CORPORATION

Inventor： SENOVA CORPORATION ,  BAO, Quingcheng ,  SORENSEN, Ian ,  GLAUNSINGER, William ,  RICKER, Richard, B. ,  ARCHBOLD, Damian

IPC: G01N27/04

CPC classification number: G01N27/12

Abstract: A method and apparatus for rapidly and continuously restoring the sensing capacity of thin film sensing elements includes passing a sufficient electrical current through the sensing element to remove from the element selected components from a fluid sample in contact with the sensing element that have an affinity for and are adsorbed and accumulated onto the surface of the sensing element. The passing of current through the sensing element can be accomplished either by applying a constant voltage across the sensing element or by forcing a constant current through the sensing element. The restoration technique removes the components from the sensing element by a combination of resistive heating of the element and electron bombardment of the components on the surface of the element. Moreover, to prevent possible rupture of the sensing element due to electromigration, the current may be alternated in a first direction and then in a second and opposite direction through the sensing element in sequential runs of equal predetermined time intervals.

Abstract translation: 用于快速且连续地恢复薄膜感测元件的感测能力的方法和装置包括使足够的电流通过感测元件以从与感测元件接触的流体样品中的元件选择的元件移除，所述流体样品与感测元件具有亲和性， 被吸附并积聚在感测元件的表面上。 通过感测元件的电流通过可以通过在感测元件上施加恒定电压或者通过迫使恒定电流通过感测元件来实现。 恢复技术通过元件的电阻加热和元件表面上的部件的电子轰击的组合从感测元件中去除组件。 此外，为了防止由于电迁移而导致的感测元件可能的破裂，电流可以在相同的预定时间间隔的连续运行中沿着第一方向，然后在相反的方向上交替通过感测元件。