This NMR machine was especially build for demo purposes. However it
is also used to help students to learn the basic principles of NMR
Using this machine one can image a finger, therefor the name 'finger'
This machine uses a 'portable' permanent magnet of 60 kg. This has a
of 0.3 T and a homogeneity of 10E-5 for 1 DSV, which is 'just' enough
The 0.3 T permanent magnet with the insert for the imaging of a finger
Using a home built gradient driver linear gradients in 2 and 3D can be made up to 3000 Hz/mm with a rise time in the order of 0.5 ms. For the NMR a home-built receiver/transmitter is used. All data-acquisition is done using the PhyDAS system which is operated under real time operating system Vx-Works.
An overview of the electronics of the finger NMR
This system is communicating with a PC system which is used for interfacing with the NMR and visualization of the data.
The NMR is operated using a PC which uses Lab-Windows.
An example of a finger. The bone with bonemarrow can clearly be recognized
An image of a piece of candy bar. The soft filling can clearly be
: NMR receiver/transmitter
Jaap Feijen : Permanent magnet/ gradient driver/NMR insert
Joris van der Sande : NMR software
Ginny ter Plegt : Permanent magnet
Workshop : Mechanical components