Volumetric 3D display allows a wide range of applications in air traffic control, medical imaging, automotive and aerospace design, visualisation in weather or defence monitoring. Previous work in this area has examined the use of upconversion in low-phonon-energy fluoride glasses and single crystals as the imaging chamber material. However, these glasses and crystals are difficult to produce at a sufficient size and quality. We will report on our examination of a range of low-phonon-energy glasses. This study identified tellurite glass as a promising candidate with high fluorescence efficiency for display and up-scalability of the imaging chamber size.
The motivation for the work reported is portable NMR spectroscopy of liquids and solids with higher sensitivity than
inductive detection and without the need for tuned elements specific to the frequency of each isotope observed. The
fabrication and assembly of a BOOMERANG force-detected nuclear magnetic resonance (NMR) spectrometer is
reported. The design is optimal for samples of ~ 50 micron diameter and realizes tolerances of ~1 micron in the Si and
ferromagnetic parts. Optical lithography, electrodeposition, reactive ion etching, and release of the moving part by
solution etching are key methods used. Resistance to delamination of the ferromagnetic material was achieved by Cr/Au
deposition prior to electrodeposition of 85/15 Co:Ni.
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