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Peer-reviewedCC BY 4.0Nanomaterials

Ultrahigh-Q Topological Mirror Heterostructure for High-Resolution Thermal Sensing in One-Dimensional Photonic Crystals

  • Mohamed Saleh M. Esmail1
  • Yassine Bouazzi2,3
  • Mabrouk Touahmia4
  • Zied Elleuch5
  • Sayed El. Soliman6,7
7 affiliations
  1. 1Basic Science Department, Faculty of Engineering, Misr University for Science and Technology, Giza 12588, Egypt
  2. 2Department of Industrial Engineering, College of Engineering, University of Ha’il, Ha’il 81481, Saudi Arabia
  3. 3Photovoltaic and Semiconductor Materials Laboratory, National Engineering School of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia
  4. 4Department of Civil Engineering, College of Engineering, University of Ha’il, Ha’il 81481, Saudi Arabia
  5. 5Computer Science Department, Applied College, University of Ha’il, Ha’il 81481, Saudi Arabia
  6. 6Faculty of Basic and Applied Sciences, Egypt-Japan University of Science and Technology, Alexandria 21934, Egypt
  7. 7Physics Department, Faculty of Science, Assiut University, Assiut 10587, Egypt
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Abstract

High-resolution optical thermal sensors are attracting increasing interest due to their potential for compact integration, electromagnetic immunity, and enhanced spectral precision. In this work, a topological mirror heterostructure based on a one-dimensional photonic crystal (1DPC) is proposed for thermal sensing applications. The structure incorporates alternating silicon/glycerin photonic layers with a glycerin defect cavity, combining the large thermo-optic response of glycerin with the strong field localization of topological edge states in a topological mirror configuration. Finite element method (FEM) simulations reveal the formation of ultranarrow resonant modes with near-unity transmission inside the photonic bandgap. The proposed topological mirror heterostructure achieves exceptional thermal sensing performance through ultranarrow resonant linewidths and strong optical confinement, resulting in ultrahigh quality factors and figures of merit. The optimized design exhibits a thermal sensitivity of −0.1177 nm/°C, a quality factor approaching 1.8 × 108, and a figure of merit of 1.53 × 104 °C−1. The proposed platform offers a promising approach to compact photonic thermal sensors that require high spectral resolution and enhanced sensing efficiency.

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Cite

BibTeXRIS
BibTeX
@article{esmail2026ultrahighq,
  title = {{Ultrahigh-Q Topological Mirror Heterostructure for High-Resolution Thermal Sensing in One-Dimensional Photonic Crystals}},
  author = {Mohamed Saleh M. Esmail and Yassine Bouazzi and Mabrouk Touahmia and Zied Elleuch and Sayed El. Soliman},
  journal = {Nanomaterials},
  year = {2026},
  month = oct,
  doi = {10.3390/nano16211399},
  url = {https://www.mdpi.com/2079-4991/16/21/1399},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Ultrahigh-Q Topological Mirror Heterostructure for High-Resolution Thermal Sensing in One-Dimensional Photonic Crystals
AU  - Mohamed Saleh M. Esmail
AU  - Yassine Bouazzi
AU  - Mabrouk Touahmia
AU  - Zied Elleuch
AU  - Sayed El. Soliman
PY  - 2026
DA  - 2026/10/31
JO  - Nanomaterials
DO  - 10.3390/nano16211399
UR  - https://www.mdpi.com/2079-4991/16/21/1399
AB  - High-resolution optical thermal sensors are attracting increasing interest due to their potential for compact integration, electromagnetic immunity, and enhanced spectral precision. In this work, a topological mirror heterostructure based on a one-dimensional photonic crystal (1DPC) is proposed for thermal sensing applications. The structure incorporates alternating silicon/glycerin photonic layers with a glycerin defect cavity, combining the large thermo-optic response of glycerin with the strong field localization of topological edge states in a topological mirror configuration. Finite element method (FEM) simulations reveal the formation of ultranarrow resonant modes with near-unity transmission inside the photonic bandgap. The proposed topological mirror heterostructure achieves exceptional thermal sensing performance through ultranarrow resonant linewidths and strong optical confinement, resulting in ultrahigh quality factors and figures of merit. The optimized design exhibits a thermal sensitivity of −0.1177 nm/°C, a quality factor approaching 1.8 × 108, and a figure of merit of 1.53 × 104 °C−1. The proposed platform offers a promising approach to compact photonic thermal sensors that require high spectral resolution and enhanced sensing efficiency.
SN  - 2079-4991
ER  -