4.8 Article

Contactless NMR Spectroscopy on a Chip

Journal

ANALYTICAL CHEMISTRY
Volume 84, Issue 8, Pages 3696-3702

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ac300204z

Keywords

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Funding

  1. U.S. National Science Foundation [CHE-0809795]
  2. National Institute of Health [5R01EB011591]
  3. Excellence Initiative of the German Federal and State Governments

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Inductively coupled planar resonators offer convenient integration of high-resolution NMR spectroscopy with microfluidic lab-on-a-chip devices. Planar spiral resonators are fabricated lithographically either by gold electroplating or by etching Cu laminated with polyimide. Their performance is characterized by NMR imaging as well as spectroscopy. A single-scan limit of detection LODt = 0.95 nmol S-1/2 was obtained from sample volumes around 1 mu L. The sensitivity of this approach is similar to that obtained by microstripline and microslot probes.

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