We are excited to announce the candidates for 2026 Executive Committee of the Orlando Local Section of the American Chemical Society. Voting is expected to open on November 8^th, 2025 and will close on November 15^th, 2025. You will receive an email with instructions on how to cast your votes electronically.

Dr. Pavithra Pathirathna
Candidate for Chair-Elect

Dr. Pavithra Pathirathna is an Associate Professor in the Department of Chemistry and Chemical Engineering at the Florida Institute of Technology. She completed her undergraduate studies at the University of Kelaniya, Sri Lanka, and earned her Ph.D. in Chemistry under the mentorship of Dr. Parastoo Hashemi at Wayne State University, Michigan. She then conducted her postdoctoral research with Dr. Shigeru Amemiya at the University of Pittsburgh. Dr. Pathirathna’s interdisciplinary and translational research focuses on developing and optimizing electrochemical sensors for the analysis of biologically and environmentally significant metals and neurotransmitters, with applications in point-of-care diagnostics. Her research has been supported by the Naval Research Laboratory and the National Science Foundation. Among her distinctions are the Outstanding Educator at a Research Institution Award from the American Chemical Society (ACS) and the Educator of the Year Award from United Bridge Inc. In addition to her academic and research roles, she has led STEM clubs at Palm Bay Middle School and Pineapple Cove Classical Academy, promoting hands-on science education for young learners. Dr. Pathirathna served as Secretary of the ACS Orlando Section (2021–2024) and currently serves as a reviewer for several scientific journals and funding agencies. Her commitment to advancing chemical education, research, and community engagement continues to reflect the mission and values of the ACS.

Dr. Meghan McGreal
Candidate for Secretary

Meghan McGreal is an Assistant Professor of Chemistry at Stetson University in DeLand. She earned her undergraduate degree at the University of North Carolina at Asheville, and her master’s and doctorate degrees from the University of Minnesota – Twin Cities. She is a computational chemist with a research focus on metalloenzyme catalysis and biomimetic modifications to the active sites of these enzymes.
Dr. McGreal is the faculty adviser to the Stetson University ACS Student Chapter and is a founding member of the Stetson Inclusive Pedagogy Faculty Cohort. Dr. McGreal is very passionate about undergraduate chemistry education, as well as providing connections and outreach opportunities for the public to experience chemistry. With the newly formed ACS student chapter, she has been very involved in outreach, performing experiments with children at many events such as the Downtown DeLand Monsters on Main Street Halloween Event and the Orlando Science Center National Chemistry Week event with the local section. 
Dr. McGreal has been a member of the ACS since she was an undergraduate student as well as secretary for the local section for the past year. She also served as volunteer coordinator for SERMACS/SWRM 2025 here in Orlando. She very much appreciates the opportunity to connect with other chemists at conferences and events with the Orlando local section and is excited to continue developing these connections with other chemists in the area, to get more involved, and to start getting others at Stetson more involved in the local section.

Dr. Van Quach
Candidate for Treasurer

Van Quach has proudly served as Treasurer of the Orlando Section of the American Chemical Society since 2019. He is also a Professor of Chemistry at Seminole State College, where he has been inspiring students since 2010. Dr. Quach earned his Bachelor of Science in Chemistry from the University of Florida in 1999. After taking time to travel and explore, he continued his academic journey at Florida State University, where his doctoral research focused on the theoretical and fundamental processes involved in chemical separations—specifically, the temperature dependence of phase ratios in liquid chromatography systems. He completed his Ph.D. in 2009 and spent two years teaching at FSU before returning to Central Florida to join Seminole State College. Outside the classroom, Dr. Quach enjoys experimenting in the kitchen, getting lost in a good book, and savoring a well-crafted glass of wine.

Dr. Nicole Lapeyrouse
Candidate for Councilor

Nicole Lapeyrouse is an associate lecturer at the University of Central Florida (UCF). She performed her undergraduate studies at Florida International University and her graduate work at UCF. At UCF, her research focuses on chemistry education. Dr. Lapeyrouse’s current research has three main focuses with the overall goal of increasing student retention in STEM. This includes investigating student’ perception of teaching practices and their experience with unique multimedia. In addition, her research group looks at identifying factors that impact students’ STEM identity. Some of her prestigious distinctions include Excellence in Undergraduate Teaching, Affordable Instructional Materials High-Impact Individual Award Recipient for the use of Open Education Resources, and Undergraduate Research Mentor of the Year.

Dr. Denisia Popolan-Vaida
Candidate for Councilor

Dr. Denisia Popolan-Vaida is an Associate Professor in the Department of Chemistry at the University of Central Florida and an active member of the Orlando Section of the American Chemical Society (ACS). She served as Chair of the section in 2022 and has coordinated the National Chemistry Week (NCW) events since 2021. In recognition of her outstanding outreach efforts, Dr. Popolan-Vaida was honored by the ACS as the 2024 Outreach Volunteer of the Year. Additionally, one of the NCW events she organized received the 2023 ChemLuminary Award for Outstanding Community Involvement in National Chemistry Week. Dr. Popolan-Vaida research focuses on combustion and atmospheric chemistry, contributing to a deeper understanding of chemical processes relevant to energy and the environment. Prior to joining UCF, she earned her Ph.D. in Physical Chemistry from the University of Ulm, Germany, and completed postdoctoral research at the University of California, Berkeley and Lawrence Berkeley National Laboratory. Dr. Popolan-Vaida is the co-author of over 35 peer-reviewed scientific publications and has received several notable awards, including the Feodor Lynen Research Fellowship, DAAD Scholarship (German Academic Exchange Program), Erasmus Scholarship, and the EMSPS Scholarship (European Mobility Scheme for Physics Students). In June 2022, she was awarded the DOE Early Career Research Award.