Gallia–ZnO nanohybrid sensors with dramatically higher sensitivity to ethanol in presence of CO, methane and VOCs

Sensitive Ratiometric Fluorescent Metal-Organic Framework Sensor for Calcium Signaling in Human Blood Ionic Concentration Media

“…Whereas, the required time for releasing up to 90% from a specific target is expressed as the recovery time . In fact, a pseudochemical adsorption on fluorophore receptors of the sensor is significantly useful for sensory applications. , …”

“…The response and recovery times of TMU-5S as a sensor probe are 5 and 40 s, respectively. In the case of an acceptable sensing behavior, the response time to a special analyte is often much faster compared to the recovery time from the identical target, indicating an effective interaction between the fluorophores of the sensor probe and the target. , Therefore, the effective interaction between TMU-5S and the calcium ion is reapproved. Moreover, the short and fast response time of 5 s creates a high potential for performing fast detection in chemical- and physiological-sensing applications.…”

“…45 In fact, a pseudochemical adsorption on fluorophore receptors of the sensor is significantly useful for sensory applications. 46,47 The response and recovery times of TMU-5S as a sensor probe are 5 and 40 s, respectively. In the case of an acceptable sensing behavior, the response time to a special analyte is often much faster compared to the recovery time from the identical target, indicating an effective interaction between the fluorophores of the sensor probe and the target.…”

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

“…The proposed reactions with acetone and ethanol that lead to a sensing signal are resumed in Equations 2–4 [30–31] and Eq. 2 [32], respectively. A schematic representation of the sensing mechanism between the acetone and the RGO–ZnO structure is shown in Fig.…”

Room temperature ethanol sensor with sub-ppm detection limit: Improving the optical response by using mesoporous silica foam

“…1) we can conclude that the principles, technical solutions, the materials used, the operating temperature ranges and concentration levels are fairly diversified. The most commonly used sensor materials are SnO 2 [1][2][3], ZnO [4][5][6][7], SiO 2 [8], In 2 O 3 [9] TiO2 [10], Fe 2 O 3 [11,12] and other nanostructures [13][14][15][16], composites [17][18][19][20][21][22][23][24][25] or coatings [26,27]. The measurement principle is mainly based on the resistive method, but also capacitive [8,15], optical [2,[26][27][28], quartz crystal microbalance (QCM) [26,28] and piezo (self-powering device) [7,21,22] applications can be found.…”