Related Experiment Video
Updated: Feb 5, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
Published on: June 1, 2012
Hierarchical Self-Assembled SnS2 Nanoflower/Zn2SnO4 Hollow Sphere Nanohybrid for Humidity-Sensing Applications
Dongzhi Zhang1,2, Xiaoqi Zong1, Zhenling Wu1
1College of Information and Control Engineering , China University of Petroleum (East China) , Qingdao 266580 , China.
Abstract:
At present, humidity sensors have promising prospects in disease monitoring, family life, environmental protection, and so on. Flexible humidity sensor is more and more popular because of its flexibility and portability. In our work, a flexible humidity sensor based on a tin disulfide (SnS2) nanoflower and a zinc stannate (Zn2SnO4) hollow sphere film was fabricated though layer-by-layer self-assembly technique. The humidity performance showed that the SnS2/Zn2SnO4 hybrid film sensor was ultrasensitive to humidity at room temperature. The test results demonstrated superior response, fast response/recovery behavior, and excellent repeatability. Moreover, compared to the single SnS2 and single Zn2SnO4 nanomaterials, the SnS2/Zn2SnO4 hybrid film sensor exhibited great improvement in humidity sensing. In addition, complex impedance spectroscopy was adopted to further explore the sensing mechanisms of the SnS2/Zn2SnO4 hybrid to various humidities. Human respiration, palm sweat, urine, and water droplets were delicately detected by the SnS2/Zn2SnO4 humidity sensor, indicating its great potential in multifarious application fields.
More Related Videos
Related Concept Videos
Thin-Walled Hollow Shafts
The Sense of Self: Reflected Self-Appraisal and Social Comparison
Introduction to Special Senses
Electric Field of a Non Uniformly Charged Sphere
Consider a non-uniformly charged sphere, for which the density of charge depends only on the distance from a point in space and not on the direction. Such a sphere has a spherically symmetrical charge distribution. Here, the electric...
Tactile and Chemical Senses
Protein Complex Assembly
Many viruses self-assemble into a fully functional unit using the infected host cell to...

