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Selective Vaporization of Superheated Nanodroplets for Rapid, Sensitive, Acoustic Biosensing.

Selective Vaporization of Superheated Nanodroplets for Rapid, Sensitive, Acoustic Biosensing.

Advanced healthcare materials (2015-06-19)

Rajarshi Chattaraj, Praveena Mohan, Jeremy D Besmer, Andrew P Goodwin

摘要

Superheated perfluorocarbon nano-droplets exhibit promise as sensitive acoustic biosensors. Aggregation of biotin-decorated lipid-shelled droplets by streptavidin greatly increases the yield of bubbles formed by ultrasound-induced vaporization. Streptavidin is sensed down to 1 × 10(-13) m, with differentiable signal appearing in as little as two minutes, using a scalable assay without washing, processing, or development steps.

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