New nanoparticles for environmental molecular detection – UROP Symposium

New nanoparticles for environmental molecular detection

Zeina Jebara

Zeina Jebara photo

Research Mentor(s): Young Geun Park
Research Mentor School/College/Department: Mechanical Engineering
Presentation Date: 08/03/2022
Presentation Type: Poster
Poster Number: 48
Session: Session II: 1:30 – 2:20pm
Room: League Ballroom
Authors: Zeina Jebara and Young Park (ygpark@umich.edu)*

Abstract

Due to their stability, perfluorinated alkyl compounds (PFAS), which are used in our daily lives, have been discovered to be harmful and to significantly contaminate soil, water, and air resources. Although prompt and accurate on-site monitoring is essential, PFAS detection still relies on a time-consuming, demanding laboratory-based technique because of the chemical stability, which makes creating a detection modality difficult. Here, we provide a novel, highly sensitive, and quick PFAS detection technique using gold nanoparticles. We found that the optical characteristics and interaction with PFAS of the gold nanoparticle varied based on its aspect ratio. We thoroughly examined the wavelength of spectra as a function of the surrounding surroundings based on this property. We were able to convincingly show that this novel spectroscopic analysis of PFAS leads in extremely specific molecular identification as well. This work will provide a new paradigm for on-site molecular analysis because of the nanoparticle’s sensitivity and selectivity.

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