Ceramic-based humidity sensitive material with liquid polymeric delivery vehicle

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United States of America

PATENT NO 12110407
SERIAL NO

18059088

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Abstract

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A humidity sensitive material includes a lanthanum-doped barium titanate (BaTiO3) co-doped with an alkali hydroxide. A polymeric liquid binder is used as a vehicle to deliver the humidity sensitive material to a substrate or electrode via a 3D-printing process. The humidity sensitive material is highly sensitive to changes in humidity and exhibits rapid and large changes in capacitance and impedance for just a relatively small change in humidity. The humidity sensitive material exhibits significantly large changes in impedance and capacitance over the entire 10-90% RH range. As a result of the high sensitivity of the humidity sensitive material, the log-linear response is significantly easier to calibrate in humidity sensing devices that use the humidity sensitive material.

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Patent OwnerAddress
UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA300 E STREET SW WASHINGTON DC 20546

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rolin, Terry D Elkmont, US 10 22
Sherrard, Cameroun Grace Huntsville, US 1 0
Small, Ian Kent Centennial, US 1 0

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