Mass-sensitive chemical preconcentrator

Patent · Mon Jan 29 23:00:00 EST 2007

OSTI ID:902918

Manginell, Ronald P ^[1]; Adkins, Douglas R ^[1]; Lewis, Patrick R ^[1]

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1. Albuquerque, NM

A microfabricated mass-sensitive chemical preconcentrator actively measures the mass of a sample on an acoustic microbalance during the collection process. The microbalance comprises a chemically sensitive interface for collecting the sample thereon and an acoustic-based physical transducer that provides an electrical output that is proportional to the mass of the collected sample. The acoustic microbalance preferably comprises a pivot plate resonator. A resistive heating element can be disposed on the chemically sensitive interface to rapidly heat and release the collected sample for further analysis. Therefore, the mass-sensitive chemical preconcentrator can optimize the sample collection time prior to release to enable the rapid and accurate analysis of analytes by a microanalytical system.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM
• Sponsoring Organization: United States Department of Energy
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): 7,168,298
• Application Number: 10/903,329
• OSTI ID: 902918
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY