Biosensing

Taking charge of biomolecules

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The combination of two scanning probe microscopy techniques has led to a label-free method of detecting charged molecules at the nanoscale and offers a general approach to biosensing with improved resolution, sensitivity and speed.

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Figure 1: Kelvin probe force microscopy with DNA arrays.

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Correspondence to Albena Ivanisevic.

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Kinsella, J., Ivanisevic, A. Taking charge of biomolecules. Nature Nanotech 2, 596–597 (2007) doi:10.1038/nnano.2007.313

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