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Detection of low abundance biomolecules is challenging for biosensors that rely on surface chemical reactions. For surface reaction based biosensors, it require to take hours or even days for biomolecules of diffusivities in the order of 10−10−11 m2/s to reach the surface of the sensors by Brownian motion. In addition, often times the repelling Coulomb interactions between the molecules and the probes...
Enzyme‐directed assembly in vivo: A targeting strategy is demonstrated, which leads to an active accumulation of nanoparticles by virtue of an assembly event specific to endogenous, enzymatic biochemical signals associated with tumor tissue. The viability of this approach is examined through a proof‐of‐concept study showing enzyme‐directed particle targeting and accumulation in human xenograft tumors...
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