Issue 3, 2021

Highly stable Pd/HNb3O8-based flexible humidity sensor for perdurable wireless wearable applications

Abstract

Real-time, daily health monitoring can provide large amounts of patient data, which may greatly improve the likelihood of diagnosing health conditions at an early stage. One potential sensor is a flexible humidity sensor to monitor moisture and humidity information such as dehydration. However, achieving a durable functional nanomaterial-based flexible humidity sensor remains a challenge due to partial desorption of water molecules during the recovery process, especially at high humidities. In this work, we demonstrate a highly stable resistive-type Pd/HNb3O8 humidity sensor, which exhibits a perdurable performance for over 100 h of cycle tests under a 90% relative humidity (RH) without significant performance degradation. One notable advantage of the Pd/HNb3O8 humidity sensor is its ability to regulate hydroniums due to the strong reducibility of H atoms dissociated on the Pd surface. This feature realizes a high stability even at a high humidity (99.9% RH). Using this superior performance, the Pd/HNb3O8 humidity sensor realizes wireless monitoring of the changes in the fingertip humidity of an adult under different physiological states, demonstrating a facile and reliable path for dehydration diagnosis.

Graphical abstract: Highly stable Pd/HNb3O8-based flexible humidity sensor for perdurable wireless wearable applications

Supplementary files

Article information

Article type
Communication
Submitted
12 10月 2020
Accepted
04 1月 2021
First published
07 1月 2021

Nanoscale Horiz., 2021,6, 260-270

Author version available

Highly stable Pd/HNb3O8-based flexible humidity sensor for perdurable wireless wearable applications

Y. Lu, K. Xu, M. Yang, S. Tang, T. Yang, Y. Fujita, S. Honda, T. Arie, S. Akita, Y. Chueh and K. Takei, Nanoscale Horiz., 2021, 6, 260 DOI: 10.1039/D0NH00594K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements