Design and Optimization of ZnO Nanostructured SAW-Based Ethylene Gas Sensor with Modified Electrode Orientation

Abstract

Here the work approaches the detection of fruit maturity level. In addition, a gas sensor is proposed to obtain better sensitivity to know the level of ethylene gas released from matured fruit. Better sensitivity can be achieved by obtaining an enhanced active area, changing the intermediate layer thickness and the pitch value of the electrode. Hexagonal nanostructured zinc oxide is used as a sensing layer. Finally, frequency shift and a total displacement of the device are increased. The hexagonal structured ZnO nanorod-based surface acoustic wave gas sensor may be used to detect ethylene gas in fruit ripening sensor with enhanced sensitivity. This paper reports a simulation of Surface Acoustic Wave (SAW) wave propagation with respect to interdigitated transducer (IDT), piezoelectric material and sensing layers.

State-of-the-art non-destructive approaches for maturity index determination in fruits and vegetables: principles, applications, and future directions

“…For instance, Sarkar et al (2020) engineered a ZnO Nanostructured ethylene gas sensor, a critical indicator of fruit ripening. Their optimized sensor exhibited heightened sensitivity, promising significant benefits in ethylene gas detection during fruit ripening, thereby enhancing quality control and reducing food wastage.…”

An Electrochemical Amperometric Ethylene Sensor with Solid Polymer Electrolyte Based on Ionic Liquid

“…Ethylene sensors based on chemoresistive [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], optical (NDIR) [19][20][21][22], colorimetric [23][24][25], luminescence [26], fluorescence [27], piezoelectric [28][29][30], and electrochemical [31][32][33][34] principles have been developed. Each such principle has its own advantages and limitations, the comparison of which can be found in several review articles [35][36][37][38].…”