Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Nadratun Chowdhury (Fed)

Nadrat Chowdhury is an NIST-NRC Postdoctoral Researcher in the Complex Microbial Systems Group. She is mentored by Sam Forry. She obtained her PhD at Duke University in Environmental Engineering, where she studied the behavior of antibiotic resistance genes in the natural environment by employing techniques in microbial culture, molecular biology and particle physics.

At NIST, Nadrat’s research consists of developing methods to obtain quantitative measurements of horizontal gene transfer in microbial populations. She is also working to standardize platforms for rapid and high throughput testing of microbial culture using droplet technology and microfluidics.


Chowdhury, N. and Wiesner, M. (2021). "Persistence and Environmental Relevance of Extracellular Antibiotic Resistance Genes: Regulation by Nanoparticle Association." Environmental Engineering Science 38(12): 1129-1139.

Chowdhury, N.; Cox, A.; Wiesner, M. Nanoparticles as vectors for antibiotic resistance: the association of silica nanoparticles with environmentally relevant extracellular antibiotic resistance genes. Science of the Total Environment 2021.

Young, M.; Chowdhury, N.; Garver, E.; Evans, P.; Popat, S.; Rittmann, B.; Torres, C. Understanding the Impact of Operational Conditions on Performance of Microbial Peroxide Producing Cells. Journal of Power Sources 2017.


Report from the 2022 NIST Rapid Microbial Testing Methods (RMTM) Workshop

Stephanie Servetas, Nancy Lin, Nadratun Chowdhury, Scott Jackson, Jason Kralj, Sheng Lin-Gibson, Melody Sanders, Tara Eskandari
Safety and quality of advanced therapies, including cellular, gene, and tissue-engineered medical products, is paramount for success of these products
Created December 21, 2021, Updated August 6, 2023