Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate
Reexamination Certificate
2011-08-09
2011-08-09
Koval, Melissa (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Determine fluid flow rate
C324S303000, C324S322000, C324S318000
Reexamination Certificate
active
07994783
ABSTRACT:
An integral microfluidic device includes an alkali vapor cell and microfluidic channel, which can be used to detect magnetism for nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). Small magnetic fields in the vicinity of the vapor cell can be measured by optically polarizing and probing the spin precession in the small magnetic field. This can then be used to detect the magnetic field of in encoded analyte in the adjacent microfluidic channel. The magnetism in the microfluidic channel can be modulated by applying an appropriate series of radio or audio frequency pulses upstream from the microfluidic chip (the remote detection modality) to yield a sensitive means of detecting NMR and MRI.
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Budker Dmitry
Kitching John
Knappe Svenja
Ledbetter Micah P.
Michalak David J.
Ernest Orlando Lawerence Berkeley
Fetzner Tiffany
Guzman Leonard T.
Koval Melissa
The Regents of the Univerisity of California
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