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We developed a novel lab-on-a-chip device for immunoassays that use paramagnetic bead as the solid carrier of biomolecules. The device combines interdigitated electrodes (IDEs), as the biomolecule detection element, with an array of patterned soft magnetic materials (e.g. NiFe stripes or pads), as the bead manipulation element. The purpose of magnetic bead manipulation is to provide sample preconcentration...
A new liquid flow cell design for in situ ellipsometric measurements on transparent multilayer samples using variable angle spectroscopic ellipsometry is presented. In this cell, films made on transparent substrates are in direct contact with liquid solution. Ellipsometry measurements are made through the transparent substrate, that is, from the back-side relative to the incident light so that films...
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