A practical and highly sensitive acoustic Michelson interferometer with a small form factor is introduced. It involves two different types of phononic crystals composed of steel rods in water acting as a medium for self-collimated waves and mirrors for the reference and sample beams, as well as a beam splitter formed by modified scatterers arranged diagonally. Finite-element method simulations are employed to demonstrate its operation around 200 kHz. Equifrequency contour analysis reveals self-collimation of ultrasonic waves between 190 and 210 kHz. Introduction of the beam splitter and mirror phononic crystals is not detrimental to self-collimation where outgoing waves from the two interferometer arms interfere such that the output intensity varies in a cosine squared manner. Consequently, maximum sensitivity is achieved when the movable mirror displacement is either zero or half of the interferometer phononic crystal period. On small intervals in these ranges, micrometer-scale displacement resolution is achievable, as the output intensity drops by 0.2% per micrometer. Thus, displacements smaller than a percent of the wavelength are easily resolvable. Nanoscale resolution can be obtained with a scaled down interferometer design. Moreover, application to liquid concentration sensing by considering ethanol–water binary mixture is demonstrated. A percent increase in weight fraction of ethanol up to 10% in the mixture leads to an intensity drop as high as 2%. Thus, significantly higher sensitivities compared to sensing schemes based on resonance frequency shift are attainable. The proposed approach can be adapted for surface acoustic waves in strain measurement or biosensing.

More from our Archive

• DOI: 10.1063/5.0152064 2023

  Two-dimensional 4<i>f</i> magnetic EuSn2X2 (X = P, As) monolayers: A first-principles study

  Yihang Bai, Yaxuan Wu, Chaobin Jia, Lipeng Hou, Bing Wang

• DOI: 10.3390/sym15071324 2023

  The Analysis of Bifurcation, Quasi-Periodic and Solitons Patterns to the New Form of the Generalized q-Deformed Sinh-Gordon Equation

  Syeda Sarwat Kazmi, Adil Jhangeer, Nauman Raza, Haifa I. Alrebdi, Abdel-Haleem Abdel-Aty, Hichem Eleuch

• DOI: 10.1063/5.0147450 2023

  Giant spin-splitting and tunable spin-momentum locked transport in room temperature collinear antiferromagnetic semimetallic CrO monolayer

  Xin Chen, Duo Wang, Linyang Li, Biplab Sanyal

• DOI: 10.3390/sym15071338 2023

  Nonlinear Dynamics of a Piecewise Modified ABC Fractional-Order Leukemia Model with Symmetric Numerical Simulations

  Hasib Khan, Jehad Alzabut, Wafa F. Alfwzan, Haseena Gulzar

• DOI: 10.1063/5.0147941 2023

  Acoustic metamaterial absorbers: The path to commercialization

  Min Yang, Ping Sheng

• DOI: 10.3390/sym15071433 2023

  Solitary Solutions for the Stochastic Fokas System Found in Monomode Optical Fibers

  Wael W. Mohammed, Farah M. Al-Askar, Clemente Cesarano

• DOI: 10.1063/5.0155310 2023

  Ohmic contacts in MXene/MoSi2N4 heterojunctions

  Xiang Zhang, Jun-Yue Zheng, Yu-Cui Xiang, Di Wu, Jing Fan, Yi-Yang Sun, Li-Juan Chen, Li-Yong Gan, Xiaoyuan Zhou

• DOI: 10.3390/sym15071405 2023

  I.V-CR-γ-Convex Functions and Their Application in Fractional Hermite–Hadamard Inequalities

  Miguel Vivas-Cortez, Sofia Ramzan, Muhammad Uzair Awan, Muhammad Zakria Javed, Awais Gul Khan, Muhammad Aslam Noor

• DOI: 10.22331/q-2023-07-12-1058 2023

  A scalable and fast artificial neural network syndrome decoder for surface codes

  Spiro Gicev, Lloyd C. L. Hollenberg, Muhammad Usman

• DOI: 10.3390/sym15071402 2023

  Islands in Generalized Dilaton Theories

  Jia Tian