Indexed by:
期刊论文
First Author:
Su, Meiying
Correspondence Author:
Wang, J (reprint author), Dalian Univ Technol, Sch Elect Sci & Technol, Dalian 116023, Peoples R China.
Co-author:
Wang, Jing,Du, Haiying,Yao, Pengjun,Zheng, Yangong,Li, Xiaogan
Date of Publication:
2012-01-03
Journal:
SENSORS AND ACTUATORS B-CHEMICAL
Included Journals:
SCIE、EI
Document Type:
J
Volume:
161
Issue:
1
Page Number:
1038-1045
ISSN No.:
0925-4005
Key Words:
Humidity sensor; Hetero-nanofibers; Electrospinning; Double jets
Abstract:
ZrO2:TiO2 hetero-nanofibers composite was synthesized via electrospinning with double jets based on positive and negative polarity electric fields. The hetero-nanofibers were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). ZrO2:TiO2 composite shows a netted hetero-nanofibers structure with interleaving of two different diameters nanofibers. Humidity sensors were fabricated based on ZrO2:TiO2 hetero-nanofibers. The impendence of the sensor changed four orders of magnitude from 10(5) to 10(1) k Omega in relative humidity (RH) range of 11 similar to 97% at 25 degrees C. The max humidity hysteresis was around 5% RH, and the response and recovery times were less than 5s and 20s. respectively. The properties of impendence vs. RH at different temperatures were discussed. Overall, the humidity sensor of ZrO2:Ti02 hetero-nanofibers exhibited good sensing characteristics. The humidity sensing mechanism was analyzed via dielectric loss and equivalent circuit. (C) 2011 Elsevier B.V. All rights reserved.
Translation or Not:
no
