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Abstract
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Accurate detection of sucrose concentration is vital for assessing sugar content in fruits, vegetables,
and nuts. This article introduces an innovative method for sensing various sucrose concentrations
using an acoustically induced transparency system integrated by a solid mechanic phononic crystal
framework. The detector architecture is based on a two-dimensional phononic crystal that employs
poly methyl methacrylate as its foundational material, complemented by a regularly spaced array of
circular tungsten pillars. The layout features a linear waveguide linked to two coupled ring resonators,
with the upper resonator housing four columns filled with varying sucrose concentrations, thereby
enabling resonance frequencies that are specifically tailored to each concentration. Simulation
findings demonstrate a strong correlation between the shifts in transmission peak frequency and the
associated sound velocities and material densities. The sensor’s functionality is further confirmed
through coupled mode theory, representative an excellent alignment with the sensor’s presentation.
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