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Method for producing a heatable and refrigerable element for a system handling small quantities of liquid, and an element manufactured by the method

  • US 5,311,896 A
  • Filed: 10/07/1991
  • Issued: 05/17/1994
  • Est. Priority Date: 04/10/1989
  • Status: Expired due to Fees
First Claim
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1. A method for making an element that controls the flow of small amounts of liquid, said element having an inside liquid space and flow channels extending from said space, the method comprising the steps of:

  • providing a mould having an external shape that corresponds to the inside shape of said element;

    depositing metallic materials having predetermined thermal conductivities over all exterior surfaces of the mould to form a shell having a plurality of locations wherein said shell has a predetermined high thermal conductivity and the areas of said shell that are adjacent to said locations are of a predetermined lower thermal conductivity;

    extracting said mould from said shell so that said shell defines a liquid space and a plurality of flow channels extending from said liquid space; and

    connecting said locations of said shell to a refrigerator and a heater to enable controlled cooling and heating of a liquid within said element at said locations.

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