Helmholtz Coils with Integrated Channels for NMR Spectroscopy[EPFL]

mt7344

ABSTRACT
4 w! e4 U3 _/ \A new technology for the microfabrication of Helmholtz
2 Y! J( q. X% V& H, B$ Gmicrocoils with integrated SU-8 channels for NMR
+ T% `& U; H) c9 {spectroscopy is presented.
These Helmholtz microcoils demonstrate superior NMR
6 _4 q% e( ?4 u$ Mperformance regarding spin excitation uniformity compared
to planar microcoils. The improved spin excitation
uniformity opens the way to advanced chemical analysis
using complex RF-pulse sequences.
9 n+ v/ Q! w8 OThe fabricated Helmholtz coils have Q-factor greater than
20 due to electroplated coil turns and vias, which connect the
- b6 P3 {, Y1 e3 S2 m% g* Nupper and lower turns. The laminated SU-8 microchannel
technology allows the implementation of further fluidic
( M. X: r4 r0 s( y5 {1 l3 u9 Mfunctions. Analyzing living cells, mechanical filters can be
7 D6 h% J% ?0 W7 U9 _integrated for sample concentration and enhanced detection.
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[ 本帖最後由 mt7344 於 2007-6-7 10:15 PM 編輯 ]