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Reusable thin film particle sensor

  • US 8,616,048 B2
  • Filed: 01/06/2011
  • Issued: 12/31/2013
  • Est. Priority Date: 02/02/2006
  • Status: Expired due to Fees
First Claim
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1. A microfluidic sensor, comprising:

  • a plurality of stacked thin film substantially planar layers forming a cassette providing structure defining a fluid path disposed inside said sensor, said path comprising;

    a first portion disposed parallel to, and within, said layers;

    a second portion provided by a tunnel passing through an interrogation layer, a constriction in said tunnel being sized to urge particles entrained in a carrier fluid into substantially single-file travel through a particle interrogation zone; and

    a third portion disposed parallel to, and within, said layers, said first portion and said third portion being disposed on opposite sides of said particle interrogation zone; and

    a waste reservoir associated with said fluid path and structured to receive a plurality of individual and serially interrogated fluid samples.

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