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Designing air-entrapment interfaces for near-ideal pressure sensors

Nature Materials volume 22, pages 1290–1291 (2023)Cite this article

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Pressure sensing is challenging in liquid environments, where typical solid-state sensors do not perform well. A sensor with solid–liquid–liquid–gas multiphasic interfaces — its design inspired by the lotus leaf, and in which a trapped air layer modulates capacitance changes with pressure — is shown to achieve near-ideal pressure sensing and is well suited to liquid environments.

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Fig. 1: Non-wetting phenomenon on the surface of the lotus leaf and the aero-elastic pressure sensor it has inspired.

References

  1. Bourdon, M. E. A description of a new metallic manometer, and other instruments for measuring pressures and temperatures. J. Frankl. Inst. 53, 102–104 (1852). This paper reports the first documented solid-state pressure sensor.

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This is a summary of: Cheng, W. et al. Frictionless multiphasic interface for near-ideal aero-elastic pressure sensing. Nat. Mater. https://doi.org/10.1038/s41563-023-01628-8 (2023).

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Designing air-entrapment interfaces for near-ideal pressure sensors. Nat. Mater. 22, 1290–1291 (2023). https://doi.org/10.1038/s41563-023-01640-y

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