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Alshomrany AS, Aly AH, Mohamed BA, Alamri S, Mohamed D, Awasthi SK, Matar ZS, Amin AF, Hanafy H. Vitiligo detection capabilities of 1D photonic crystal biosensing design. Sci Rep 2025; 15:883. [PMID: 39762338 PMCID: PMC11704009 DOI: 10.1038/s41598-024-83421-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Accepted: 12/16/2024] [Indexed: 01/11/2025] Open
Abstract
This theoretical work focuses on the application of Tamm resonance-based biosensing using a one-dimensional photonic crystal for detecting skin vitiligo, a condition caused by the loss of pigment in the body. This biosensor utilizes the interaction of light with the photonic structure to identify the specific biomarkers associated with vitiligo. The proposed structure is composed of prism/Ag/skin-sample/(GaP/PS)N/glass. The MATLAB simulations are used to obtain numerical results pertaining to the work by using the transfer matrix method (TMM). The analysis of transmission spectra of the proposed structure shows its minute sensing ability of detecting skin vitiligo. The proposed sensor possesses a higher sensitivity of 1200 nm/RIU which is higher than the sensitivities of the sensor reported earlier. Moreover, the suggested biosensor possesses an extremely high-quality factor value of 40,650 with an exceptionally small full-width-half-maximum value of 0.04 nm.
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Affiliation(s)
- Ali S Alshomrany
- Department of Physics, College of Sciences, Umm Al-Qura University, Al Taif HWY, Mecca, 24381, Saudi Arabia
| | - Arafa H Aly
- Physics Department, Faculty of Sciences, TH-PPM Group, Beni-Suef University, Beni Suef, 62514, Egypt.
- Higher Technological Institute of Applied Sciences in Beni-Suef (HSI), Beni Suef, Egypt.
| | - B A Mohamed
- Physics Department, Faculty of Sciences, TH-PPM Group, Beni-Suef University, Beni Suef, 62514, Egypt
| | - S Alamri
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 62529, Saudi Arabia
- Center for Engineering and Technology Innovations, King Khalid University, Abha, 61421, Saudi Arabia
| | - D Mohamed
- Physics Department, Faculty of Sciences, TH-PPM Group, Beni-Suef University, Beni Suef, 62514, Egypt
| | - S K Awasthi
- Department of Physics and Material Science and Engineering, Jaypee Institute of Information Technology, Noida, 201304, U.P, India
| | - Zinab S Matar
- Physics Department, College of Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - A F Amin
- Faculty of Technology and Education, Beni-Suef University, Beni Suef, 62111, Egypt
| | - H Hanafy
- Physics Department, Faculty of Sciences, TH-PPM Group, Beni-Suef University, Beni Suef, 62514, Egypt
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Zhu P, Chen R, Yang X, Fan Y, Lian H, Wang ZY. Formation of photonic band gaps by direct destructive interference. OPTICS EXPRESS 2023; 31:43390-43400. [PMID: 38178433 DOI: 10.1364/oe.507977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 11/24/2023] [Indexed: 01/06/2024]
Abstract
We study a photonic band gap (PBG) material consisting of multiple waveguides. The multiconnected waveguides provide different paths for direct wave interference within the material. Using coaxial cables as waveguides, we are able to tune the PBG of the material. Using direct destructive interference between different paths of the waveguides, we experimentally observe a kind of PBG which is quite different from the traditional PBG that is caused by scattering in dielectrics with inhomogeneous refractive indices. Particularly, this newly observed PBG has an extremely strong wave attenuation, making electromagnetic (EM) waves in the PBG cannot even pass through one unit cell under certain conditions. We also systematically investigate the transmission of EM waves in our PBG materials and discuss the mechanism of band gap formation. Our results provide a new insight to develop new band gap materials for photons and phonons.
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