Two-dimensional phononic crystal sensor for volumetric detection of hydrogen peroxide (H2O2) in liquids

Abstract

In this work, a novel design of a highly sensitive two-dimensional fluid/fluid phononic crystal sensor for sensing hydrogen peroxide (H 2 O 2 ) concentrations up to 75.5% in water is presented. The transmission spectra of the phononic crystal sensor is calculated based on the finite element method (FEM). The host matrix is made from mercury and the inclusions are filled with water. H 2 O 2 with different concentrations have been added in a cavity inside the phononic crystal design. Different resonant modes related to each H 2 O 2 concentration were localized in the center of the phononic band gap. It is predicted that the central frequency of this resonant mode changes as the concentration of the H 2 O 2 alters. The sensor showed high performance and quality factor versus a wide range of H 2 O 2 concentrations. The sensitivity reached up the value of 426 Hz for each 1% change in H 2 O 2 concentration. Also, we obtained a quality factor with the value of 1612 and a figure of merit with the value of 2488. Thereby this sensor can be used as a highly sensitive biosensor for hydrogenates, acidity and all components such as glucose and uric acid in the blood. Finally, obtained simulation results revealed that the proposed H 2 O 2 sensor can be considered as a competitive, prospective, flexible and commercial device for detecting and distinguishing H 2 O 2 concentrations with high efficiency. • A highly sensitive two-dimensional phononic crystal sensor is proposed to distinguish hydrogen peroxide -water mixtures. • The sensor structure from mercury as a host matrix and water inclusions. • The proposed sensor showed high performance and quality factor versus a wide range of hydrogen peroxide concentrations. • The sensor has a sensitivity of the value 426 Hz for each 1% change in H 2 O 2 concentration.