ArticleScientific reports2025
Coupling between topological edge state and defect mode-based biosensor using phononic crystal.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Impact of defects and asymmetry on the acoustic transmission of serial resonators.Scientific reports · 2026Article
- Novel Helmholtz resonators parallel to lateral closed resonators for sensing applications.Scientific reports · 2025Article
- Tunable sensing properties of a Helmholtz resonator array featuring a central defect cell with four lateral ducts.Scientific reports · 2025Article
- Design of a parallel Helmholtz resonator structure as a hazardous greenhouse gases sensor using the transfer matrix method.Scientific reports · 2025Article
- Acoustic metasurface constructed by periodic parallel Helmholtz resonators for gas sensing applications.Scientific reports · 2025Article
- Performance analysis of Thue Morse acoustic resonators for noise reduction.Scientific reports · 2025Article
- Tunability of acoustic band gaps using Thue Morse quasiperiodic lateral resonators.Scientific reports · 2025Article
- Localized modes and acoustic band gaps using different quasi-periodic structures based on closed and open resonators.Scientific reports · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
A wealth of details regarding an individual's state of health, like a person's respiratory and metabolic functioning, can be studied by analyzing the volatile molecules and atoms in human exhaled breath. Besides, the salinity of seawater is a crucial factor in understanding its characteristics because any variation in the salinity of seawater represents the variations in the hydrological, biological, and chemical distributions. In this paper, a symmetrical one-dimensional phononic structure is theoretically designed using two symmetrical crystals separated with a defective cavity. This structure has been designed to excite a topological edge state coupled with defect mode. The coupled mode achieves high sensitivity to NaCl concentration in an aqueous solution, seven times higher than the defective one. By ranging the NaCl concentration from 0 to 21%, the average sensitivity is 467 and 3160 Hz/% for defect mode and coupled modes, respectively. The bandwidth of the coupled mode of 170 Hz is much narrower than that of the defect mode of 671 Hz for detecting salinity. For detecting the increase in [Formula: see text] concentration in dry exhaled breath by ranging the [Formula: see text] concentration from 0 ppm to 100 ppm, the average sensitivity is [Formula: see text] Hz/ppm for coupled mode. As a result of these enhancements in the sensitivity and bandwidth of the coupled mode, the coupled mode is recommended to be used in different biosensing applications.
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