Method of preparation miniaturized sensors on basis of fluids an

Details Method of preparation miniaturized sensors on basis of fluids an Method of preparation miniaturized sensors on basis of fluids an

1992-08-10

1994-03-15

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

G01N 2726

Patent

active

052943240

ABSTRACT:
A miniaturized sensor element comprises a capillary having first and second ends with a channel therebetween. One of the ends is closed while the other is open. Near the closed end, the capillary material which softens when heated, is heated and gas is supplied to the open end. This expands a chamber near the closed end which can be shaped and sized by moving the point of heating and varying the gas supply into the channel. The initially closed end is then opened and the channel inverted. The initially open end is then closed and again the capillary is heated and gas is supplied to form and shape a second chamber in the channel. After this, the closed end of the channel is again opened and both now open ends are smoothed to complete the capillary for use as part of a miniaturized sensor element.

REFERENCES:
patent: 4260467 (1981-04-01), Smith et al.
patent: 4846955 (1989-07-01), Osteryoung et al.
patent: 4939410 (1990-07-01), Nagy et al.
Production Program-Laboratorni Pristroje, Praha, 1986.
European Search Report, Dated Mar. 11, 1993 in European Application ET91 10 1283.

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