Almawgani Abdulkarem H M, Fathy Hamza Makhlouf, Elsayed Hussein A, Ali Ghassan Ahmed, Irfan Muhammad, Mehaney Ahmed
Electrical Engineering Department, College of Engineering, Najran University Najran Kingdom of Saudi Arabia.
Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62512 Egypt
RSC Adv. 2023 Apr 17;13(18):11967-11981. doi: 10.1039/d3ra01155k.
The resonant acoustic band gap materials have introduced an innovative generation of sensing technology. Based on the local resonant transmitted peaks, this study aims to comprehensively investigate the use of periodic and quasi-periodic one-dimension (1D) layered phononic crystals (PnCs) as a highly sensitive biosensor for the detection and monitoring of sodium iodide (NaI) solution. Meanwhile, a defect layer is introduced defect layer inside the phononic crystal designs to be filled with NaI solution. The proposed biosensor is developed based on the periodic PnCs structure and quasi-periodic PnCs structure. The numerical findings demonstrated that the quasi-periodic PnCs structure provided a wide phononic band gap and a large sensitivity compared to the periodic one. Moreover, many resonance peaks through the transmission spectra are introduced for the quasi-periodic design. The results also show that the resonant peak frequency changes effectively with varying NaI solution concentrations in the third sequence of the quasi-periodic PnCs structure. The sensor can differentiate between concentrations ranging from 0 to 35% with a 5% step, which is extremely satisfying for precise detection and can contribute to a variety of issues in medical applications. Additionally, the sensor provided excellent performance for all the concentrations of the NaI solution. For instance, the sensor has a sensitivity of 959 MHz, a quality factor of 6947, a very low damping factor of 7.19 × 10, and a figure of merit of 323.529.
共振声学带隙材料引入了一代创新的传感技术。基于局部共振传输峰，本研究旨在全面研究周期性和准周期性一维（1D）层状声子晶体（PnCs）作为检测和监测碘化钠（NaI）溶液的高灵敏度生物传感器的应用。同时，在声子晶体设计中引入缺陷层，使其填充NaI溶液。所提出的生物传感器是基于周期性PnCs结构和准周期性PnCs结构开发的。数值结果表明，与周期性结构相比，准周期性PnCs结构提供了更宽的声子带隙和更高的灵敏度。此外，准周期性设计在传输光谱中引入了许多共振峰。结果还表明，在准周期性PnCs结构的第三序列中，共振峰频率随NaI溶液浓度的变化而有效变化。该传感器能够以5%的步长区分0至35%的浓度范围，这对于精确检测非常令人满意，并且有助于解决医学应用中的各种问题。此外，该传感器对所有浓度的NaI溶液都具有优异的性能。例如，该传感器的灵敏度为959 MHz，品质因数为6947，阻尼因子非常低，为7.19×10，品质因数为323.529。
