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Graphene-enhanced plasmonic nanohole arrays for environmental sensing in aqueous samples

Genslein, Christa ; Hausler, Peter ; Kirchner, Eva-Maria ; Bierl, Rudolf ; Baeumner, Antje J ; Hirsch, Thomas


The label-free nature of surface plasmon resonance techniques ( SPR) enables a fast, specific, and sensitive analysis of molecular interactions. However, detection of highly diluted concentrations and small molecules is still challenging. It is shown here that in contrast to continuous gold films, gold nanohole arrays can significantly improve the performance of SPR devices in angle-dependent ...


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