Ulrike Wallrabe

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We present a completely revised generation of a modular micro-NMR detector, featuring an active sample volume of ∼ 100 nL, and an improvement of 87% in probe efficiency. The detector is capable of rapidly screening different samples using exchangeable, application-specific, MEMS-fabricated, microfluidic sample containers. In contrast to our previous design,(More)
We present a rapid prototyping and a cost effective fabrication process on batch fabricated wafer-level micro inductive components with polymer magnetic composite (PMC) cores. The new PMC cores provide a possibility to bridge the gap between the non-magnetic and magnetic core inductive devices in terms of both the operating frequency and electrical(More)
This article describes the development and testing of the first automatically microfabricated probes to be used in conjunction with the magic angle coil spinning (MACS) NMR technique. NMR spectroscopy is a versatile technique for a large range of applications, but its intrinsically low sensitivity poses significant difficulties in analyzing mass- and(More)
A high NMR detection sensitivity is indispensable when dealing with mass and volume-limited samples, or whenever a high spatial resolution is required. The use of miniaturised RF coils is a proven way to increase sensitivity , but may be impractical and is not applicable to every experimental situation. We present the use of magnetic lenses, denoted as Lenz(More)
In the published paper [1], there are two errors in Table 5, both of which correspond to the reported results of a paper authored by Macrelli et al. in 2014 [48]. The correct value of the inductance per DC resistance of this paper is 73256 nH/Ω, and the correct value of the core volume is 4.32 mm 3. Therefore, Table 5 should read as follows: Table 5. Survey(More)
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