Innovative photonic architectures for bio-sample detection through refractive index sensing

Title : Innovative photonic architectures for bio-sample detection through refractive index sensing

Abstract:

This presentation delves into the transformative advancements in photonic technology and its potential to replace traditional electronic devices by exploiting photonic properties through engineered structures. The discussion centers on various photonic crystal (PhC) configurations, including 1D, 2D, and photonic crystal fiber (PCF) structures, and their innovative applications in biosensing.

Key highlights include the design and optimization of PhC-based sensors for detecting diverse bio-analytes such as cancer cells, blood components, hormones, enzymes, and viruses. The integration of advanced materials like graphene, Ge2_22?Sb2_22?Te5_55?, and other 2D materials will be showcased for their significant contributions to enhancing sensor performance. Computational techniques, including the Transfer Matrix Method (TMM) and Plane Wave Expansion (PWE), alongside simulations in COMSOL Multiphysics, are employed to analyze spectral characteristics, electric field distribution, and optimize sensing parameters.

Additionally, the presentation will highlight novel micro-structured PCFs with elliptical air holes and surface plasmon resonance (SPR) sensors incorporating 2D materials and phase-change materials like Ge₂?Sb₂?Te₅??. These configurations demonstrate exceptional sensitivity, resolution, and performance metrics, addressing key challenges in photonic technology such as sensitivity, accuracy, and fabrication feasibility.

The session will emphasize the wide-ranging impact of these photonic advancements, particularly in medical diagnostics, by enabling early disease detection with high precision. This research exemplifies how photonic technology is redefining biosensing applications, paving the way for next-generation devices that integrate seamlessly into healthcare and other critical sectors.

Biography:

Puspa Devi Pukhrambam earned her B.Tech. in Electronics and Communication Engineering from NERIST, Arunachal Pradesh, in 2010, and her M.S. and Ph.D. in Electronic and Computer Engineering from NTUST, Taiwan. She served as a postdoctoral researcher at NTUST from February 2017 to June 2018 and has been an Assistant Professor in the Department of Electronics and Communication Engineering at National Institute of Technology Silchar since June 2018. Her research focuses on semiconductor and optoelectronic devices, optical communication, photonic biosensors. She has published over 40 SCI (E) journal articles and presented more than 20 papers at international conferences.