Dual-Mode Optical Gas Sensor: Integrating MIR and UV absorption with photoluminescence for gas detection of biomedical interest

• Grant number: 25/01390-4
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: April 30, 2025
• End date: April 29, 2026
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Danilo Manzani
• Grantee: Francis Dayan Rivas Garcia
• Supervisor: Boris Mizaikoff
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Ulm University, Germany
• Associated to the scholarship: 23/07987-7 - Development of an optical platform based on photoluminescent films on glass and commercial optical fibers for potential application in gas sensing of biomedical interest, BP.DR

Abstract

This proposal aims to design and evaluate a dual-mode optical gas sensor based on a dual-channel integrated hollow waveguide (iHWG) system for detecting volatile organic compounds (VOCs) relevant to medical diagnostics. The sensor will combine direct absorption in the mid-infrared (MIR) region or UV in one channel, with indirect photoluminescence detection in the second channel from iHWG, utilizing functionalized glass substrates coated with lanthanide complexes and double halide perovskites. The proposal includes the synthesis of photoluminescent material and functionalization onto glass substrate, the fabrication of dual channel iHWGs, and performance evaluation using VOCs such as acetone and limonene. The platform's performance will be assessed in terms of detection limits, quantification limits, selectivity, and specificity. This innovative sensor aims to improve the specificity and selectivity of advanced sensing technologies, with potential applications in healthcare diagnostics.