High-sensitivity microliter blood pressure sensors based on patterned micro-nanostructure arrays.

Yu, Nianzuo; Liu, Yongshun; Ji, Bai; Wang, Shuli; Chen, Yunyun; Sun, Tianmeng; Zhang, Junhu; Yang, Bai · Lab Chip · 2020

basic_science · Level V

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Abstract

Herein we present a micro-nanostructure integrated liquid pressure sensor, which features an ultra-high sensitivity of 16.71 mbar<sup>-1</sup>, a low-pressure regime of 2 mbar, a trace sample volume of less than 1.3 μL and a visible display element. The measurable pressure ranges of the sensors include not only from micro-scale fluids to bulk liquids but also from hydraulic pressures to blood pressures, opening a window for liquid pressure sensing in lab-on-chip platforms, point-of-care diagnostics, and even robotics.

Medical subject headings