Maria Moilanen

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The purpose of this paper was to investigate the effect of thermal cycling on the high-frequency behavior of ball grid array (BGA) interconnection structures. In order to characterize the applicability of RF measurements in predicting interconnection breakdown, a broadband BGA transition structure between a radio frequency printed wiring board (RF-PWB) and(More)
The purpose of this paper was to investigate the effect of thermal cycling on the high frequency behavior of a BGA transition structure. A broadband microwave BGA transition structure between a RF-PWB and a ceramic module was designed and fabricated. The stand-off height of the composite BGA solder joints was 500 mum. The BGA test modules mounted on the(More)
In this paper, the high-frequency behavior of ball grid array solder interconnections during thermal cycling tests (TCTs) was investigated. This interconnection type was used in ceramic antenna modules that were attached to printed wiring boards thermo-mechanically equivalent to commonly used FR-4 material. The tests were carried out in a TCT chamber(More)
1H and 13C NMR chemical shifts were determined from the NMR spectra of low concentration solutions of T-2 toxin, T-2 triol, HT-2 toxin, diacetoxyscirpenol, and neosolaniol. Isomerization of neosolaniol was observed to occur in chloroform solution. 1D and 2D 1H and 13C NMR techniques were used in order to determine the structure of the isomerization product,(More)
Gold nanoparticles (GNPs) are popular colloidal substrates in various sensor, imaging, and nanomedicine applications. In separation science, they have raised some interest as a support for sample preparation. Reasons for their popularity are their low cost, ability for size-controlled synthesis with well-defined narrow nanoparticle size distributions, as(More)
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