Silicon Plasmonic Sensor for Biological Detection
| dc.contributor.author | Bushra, Fabbiha | |
| dc.contributor.author | Siddiqui, Muslima | |
| dc.contributor.author | Nisa, Sanzida Tasnim | |
| dc.date.accessioned | 2026-07-01T10:01:35Z | |
| dc.date.issued | 2025-10-25 | |
| dc.description | Supervised by Dr. Rakibul Hasan Sagor, Professor, Department of Electrical and Electronic Engineering (EEE) Islamic University of Technology (IUT) Board Bazar, Gazipur, Bangladesh This thesis is submitted in partial fulfillment of the requirement for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2025 | |
| dc.description.abstract | The thesis presents a groundbreaking advancement in photonic biosensing through the development of a CMOS-compatible plasmonic sensor that utilizes n-doped silicon as a high-performance alternative to conventional noble metals. By fundamentally reimagining both the material platform and structural design, this research overcomes the critical limitations of traditional surface plasmon resonance systems, including high optical losses, poor stability and fabrication incompatibility. Through systematic design evolution and rigorous finite element method optimization, we have created an innovative waveguide-coupled resonator architecture featuring embedded multi-ring nanostructures and strategically positioned dielectric pillars. This sophisticated design achieves exceptional performance metrics, demonstrating a sensitivity of 1270 nm/RIU and a figure of merit of 22.3 that competes favorably with noble metal-based sensors while offering superior integration capabilities. The sensor demonstrates precise identification of blood components, clear differentiation of intracellular biomolecules and reliable distinction between various tissue types. This research establishes a transformative foundation for next-generation point-of-care diagnostics, offering a commercially viable pathway toward scalable, cost-effective biosensing solutions. By bridging the critical gap between laboratory performance and real-world clinical implementation, this work paves the way for integrated lab-on-chip systems that combine high sensitivity with manufacturability, potentially revolutionizing personalized medicine, environmental monitoring and biomedical research. | |
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| dc.identifier.uri | https://repository.iutoic-dhaka.edu/handle/123456789/2654 | |
| dc.language.iso | en | |
| dc.publisher | Department of Electrical and Electronic Engineering (EEE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh | |
| dc.title | Silicon Plasmonic Sensor for Biological Detection | |
| dc.type | Thesis |
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