Highly stable Pd/HNb3O8-based flexible humidity sensor for perdurable wireless wearable applications.
Nanoscale Horiz
; 6(3): 260-270, 2021 03 01.
Article
em En
| MEDLINE
| ID: mdl-33470262
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Água
/
Nanoestruturas
/
Dispositivos Eletrônicos Vestíveis
/
Umidade
Limite:
Adult
/
Humans
Idioma:
En
Revista:
Nanoscale Horiz
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Japão