Sample pre-concentration is crucial to achieve high sensitivity and low detection limits in lab-on-a-chip devices. Here, we present a system in which self-propelled catalytic micromotors are biofunctionalized and trapped acting as an alternative concentrating mechanism. This system requires no external energy source, which facilitates integration and miniaturization.
L. Restrepo-Pérez, L. Soler, C. Martínez-Cisneros, S. Sánchez and O. G. Schmidt, Lab Chip, 2014, 14, 2914 DOI: 10.1039/C4LC00439F
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