Repurposing traditional China Xuan paper for versatile humidity sensing.

ABSTRACT: Xuan paper (also known as Chinese rice paper), traditionally used for calligraphy and painting, has rarely been explored as a functional material. In this study, Xuan paper is repurposed for the first time as a humidity-sensitive material, exhibiting state-of-the-art sensitivity over a wide humidity range. A humidity sensor with a thickness below 0.09 mm and a mass below 0.012 g was fabricated using only Xuan paper, sodium chloride (NaCl) aqueous solution, and conductive carbon ink through a simple three-step process. Characterization of the sensor shows that NaCl crystals are combined with sparse cellulose fibers, facilitating moisture absorption and forming an electrochemical sensing system. To investigate the electrochemical properties of the sensor, electrochemical impedance spectrosco

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12827349 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature