ResearchThe overarching goal of our research is to develop and apply state-of-the-art analytical instrumentation and innovative materials to solve emerging and most pressing issues in environmental safety and public health. Driven by this goal, my group mainly focuses on the following projects.
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Develop nanoprobes for biological and environmental imaging This project explores advanced applications of surface-enhanced Raman spectroscopy (SERS) in imaging acidity (pH) and reactive chemical species in microenvironments, such as cancer cells and aerosol droplets. We are also interested in mapping the location and behavior of inorganic and organic contaminants in microsystems and interfaces.
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Detect chemicals of emerging concerns in natural and built environmentsEnvironmental sensing is essential for assessing environmental risk, reducing pollution, controlling disease, and minimizing the negative impacts of human activities. This project aims to develop innovative sensors to serve the pressing needs of environmental sensing. Specifically, we are interested in the detection of emerging contaminants (e.g., microplastics, mycotoxins, and cyanotoxins) in natural and built environments.
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Identify and quantify pathogens in indoor and outdoor environmentsPathogens, including virus, bacteria and fungi, are usually difficult to see by naked eyes, but their impacts can be devastating and have been seen both regionally and globally (e.g., COVID-19). This project aims to track these tiny but impactful pathogens onin indoor and outdoor surfaces by using our expertise/skills on analytical chemistry. The overall goal is to provide advanced knowledge and innovative analytical tools that are essential to understanding and addressing global public threats, including COVID-19 and antimicrobial resistant pathogens.
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