Fangwei Si

Fangwei Si is the Cooper-Siegel Assistant Professor of Physics in the Department of Physics at Carnegie Mellon University. His research focuses on Biological Physics Experiment, with an emphasis on understanding the physiological and biophysical principles governing bacterial cells and their interactions. His work explores how cellular components and structures influence bacterial fitness, adaptation, and interactions with bacteriophages. Si's research integrates experimental and theoretical approaches to uncover fundamental biological laws. He holds a Ph.D. from Johns Hopkins University and a B.S. from Peking University. His research is supported by a profile page at https://www.cmu.edu/physics/people/faculty/si.html, and he can be contacted at fsi@cmu.edu.

Fangwei Si's research focuses on cell biophysics, quantitative biology, microbial physiology, and microbiology. His work explores fundamental mechanisms underlying bacterial cell size control, homeostasis, and the role of mechanical forces in shaping bacterial morphology. Si investigates how cellular processes such as initiation mass, volume regulation, and membrane tension influence bacterial growth and division. His studies also examine the impact of antibiotics on bacterial physiology and the use of advanced imaging techniques for single-cell analysis. By integrating computational models with experimental data, Si contributes to understanding stochasticity in bacterial cell cycles and adaptation to fluctuating environments.