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In this contribution, a method to select discrete wavelengths that allow an accurate estimation of the glucose concentration in a biosensing system based on metamaterials is presented. The sensing concept is adapted to the particular application of ophthalmic glucose sensing by covering the metamaterial with a glucose-sensitive hydrogel and the sensor readout is performed optically. Due to the fact...
We present a novel concept for ophthalmic glucose sensing using a biosensing system that consists of plasmonic dipole metamaterial covered by a layer of functionalized hydrogel. The metamaterial together with the hydrogel can be integrated into a contact lens. This optical sensor changes its properties such as reflectivity upon the ambient glucose concentration, which allows in situ measurements in...
Common solder reflow processes can no longer satisfy the actual requirements in advanced packaging. The packaging of 3D and optoelectronic components for instance is demanding a fluxless soldering method together with low thermal and mechanical stress to avoid damaging of the sensitive membranes or optical components (like lenses, etc.). Wafer level packaging and chip on flex applications (like LCD...
Summary form only given. 1st the Paper gives a short overview on the history and development of electroless NiAu as low cost bumping technology in industry. The applications in the first phase of production implementation of electroless Ni/Au were focused on wafers with Al-Pads and Ni/Au as UBM or bump material. The second phase of implementation is focusing on low k wafers with copper pad metallization,...
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