专利名称：Method and apparatus for heating and
controlling the temperature of ultra smallvolumes
发明人：Frederick Sachs,Anthony Auerbach,Richard G.
McGarrigle,James E. Neil
申请号：US06/858386申请日：19860501公开号：US04695709A公开日：19870922
摘要：The present invention relates to an apparatus for the controlled heating of anultra small volume. The invention provides a means of heating, measuring, and controllingthe temperature in such ultra small volume. The present apparatus includes a heat-sensor portion comprised of an electrical resistance. Heat is generated in the heat-sensor portion by a flow of electrical current through such electrical resistance. Thetemperature in the heat-sensor portion is determined by measuring the electricalresistance of the circuit that includes the heat- sensor element. The apparatus iscomprised of a thin-walled microcapillary tube filled internally with an electricallyconductive material and coated externally with a dissimilar electrically conductivematerial. The external electrically conductive coating on the microcapillary tube issuitable a noble metal such as gold. The external metal coating preferably has a metallicovercoat to improve conductivity, and more preferably has a further overcoat, or outsidelayer, of a nonconductive material. Along the tip portion of the microcapillary tube thetwo dissimilar conductive materials (internal and external) meet to form a juncture of
electrical resistance. This juncture is the heat- sensor portion serving both as the heatingelement and as the temperature sensor. The electrically conductive material inside themicrocapillary tube and the electrically conductive coating on the outside of themicrocapillary tube are connected to an electrical source as part of an electrical circuit.
申请人：THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
代理人：Donald C. Studley,Michael L. Dunn
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