Nuclear magnetic resonance in microfluidic environments using inductively coupled radiofrequency resonators
Nuclear magnetic resonance in microfluidic environments using inductively coupled radiofrequency resonators
Inductively coupled radiofrequency resonators can provide NMR signals from small samples wirelessly and with high sensitivity. We explore the achievable sensitivity depending on the resonator’s Q-factor and its cross-inductance to the NMR probe. Even for small resonators with modest Q, the sensitivity can be close to that of directly (impedance) coupled microcoils. Sensitivity and excitation power inside inductively coupled solenoids were monitored experimentally by microimaging. The flow velocity profile inside a capillary of 200 µm diameter was measured with a resolution and sensitivity that rivals recent work based on directly coupled microcoils.
inductive coupling, microresonator, sensitivity
132-136
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Monazami, Reza
9d39fbf8-6b78-4cf9-8648-2eaddbbc2453
May 2009
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Monazami, Reza
9d39fbf8-6b78-4cf9-8648-2eaddbbc2453
Utz, Marcel and Monazami, Reza
(2009)
Nuclear magnetic resonance in microfluidic environments using inductively coupled radiofrequency resonators.
Journal of Magnetic Resonance, 198 (1), .
(doi:10.1016/j.jmr.2009.01.028).
Abstract
Inductively coupled radiofrequency resonators can provide NMR signals from small samples wirelessly and with high sensitivity. We explore the achievable sensitivity depending on the resonator’s Q-factor and its cross-inductance to the NMR probe. Even for small resonators with modest Q, the sensitivity can be close to that of directly (impedance) coupled microcoils. Sensitivity and excitation power inside inductively coupled solenoids were monitored experimentally by microimaging. The flow velocity profile inside a capillary of 200 µm diameter was measured with a resolution and sensitivity that rivals recent work based on directly coupled microcoils.
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e-pub ahead of print date: 30 January 2009
Published date: May 2009
Keywords:
inductive coupling, microresonator, sensitivity
Organisations:
Magnetic Resonance
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Local EPrints ID: 354146
URI: http://eprints.soton.ac.uk/id/eprint/354146
PURE UUID: 977d00f8-2f19-48f8-9c6d-7d63b197f250
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Date deposited: 03 Jul 2013 11:33
Last modified: 15 Mar 2024 03:44
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Author:
Reza Monazami
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