Humidity sensing characteristics of Sn doped Zinc oxide based quartz crystal microbalance sensors

High performance and moisture stable humidity sensors based on polyvinylidene fluoride nanofibers by improving electric conductivity

“…According to previous research, response and recovery times can be attributed to the aggregation of water molecules, which can restrict the mobility of these molecules from the polymer chains . However, ZnO nanoparticles can easily diffuse water molecules , which results in the fast response and recovery of the sensors.…”

“…Thus, humidity sensors should be high performing, such as having great linearity, high sensitivity, excellent stability, and fast response time. To improve these important characteristics, many studies have been performed with new materials such as metal oxides , ceramics , carbon materials , and polymer composites . In addition, several approaches have been reported that possess structural advantages, such as mesoporous materials and nanofibers , which have a huge advantage of large surface area.…”

“…It is known that zinc oxide (ZnO) can be easily grown in different morphologies to have a structural advantage, and it has chemically active defect sites (i.e., oxygen vacancies) that enable high sensitivity in which they are used . Moreover, in terms of their good wettability and ability to mass transfer, ZnO nanostructures show promising properties for sensor applications .…”

Effect of Microstructure of ZnO Nanorod Film on Humidity Sensing

“…Humidity sensing has been a subject of research for many years because of its great importance in industrial, agricultural, and human environments. Several sensing principles have been applied in humidity sensing, such as resistive, capacitive, acoustic, piezoelectric, optical, gravitational, and others . Especially, the resistive‐type sensing is the most impressive and popular due to its simplicity and low cost.…”

A novel ultra-high frequency humidity sensor based on a magnetostatic spin wave oscillator

“…Many of the aforementioned devices have also been applied as air humidity sensors [13][14][15][16][17][18][19][20], and have been combined with different sensitive materials, such as porous ceramics [21,22], semiconductor materials [23,24] and polymers [25,26] in order to obtain a large response to changes in humidity. In general, the sensitive materials used to detect humidity are hygroscopic, which means that they attract and hold water molecules from the surrounding environment.…”