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Kevin D. Welsher

Robert R. & Katherine B. Penn Associate Professor
Chemistry
Box 90348, Durham, NC 27708
2213 French Science Center, Durham, NC 27705

Current Appointments & Affiliations


Robert R. & Katherine B. Penn Associate Professor · 2023 - Present Chemistry, Trinity College of Arts & Sciences
Associate Professor of Chemistry · 2023 - Present Chemistry, Trinity College of Arts & Sciences
Director of Graduate Studies in Chemistry · 2023 - Present Chemistry, Trinity College of Arts & Sciences

In the News


Published February 16, 2023
Two Trinity Faculty Named 2023 Sloan Research Fellows
Published November 10, 2022
Watch a Virus in the Moments Right Before it Attacks
Published June 22, 2017
3D Virus Cam Catches Germs Red-Handed

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Recent Publications


Super-Resolving Particle Diffusion Heterogeneity in Porous Hydrogels via High-Speed 3D Active-Feedback Single-Particle Tracking Microscopy.

Journal Article Small (Weinheim an der Bergstrasse, Germany) · October 2025 Nanoparticle diffusion in 3D porous structures is critical to understanding natural and synthetic systems but remains underexplored due to limitations in traditional microscopy methods. Here, 3D Single-Molecule Active-feedback Real-time Tracking (3D-SMART) ... Full text Cite

Hour-Long, Kilohertz Sampling Rate Three-Dimensional Single-Virus Tracking in Live Cells Enabled by StayGold Fluorescent Protein Fusions.

Journal Article The journal of physical chemistry. B · June 2024 A viral infection process covers a large range of spatiotemporal scales. Tracking the viral infection process with fluorescent labels over long durations while maintaining a fast sampling rate requires bright and highly photostable labels. StayGold is a re ... Full text Cite

Active-Feedback 3D Single-Molecule Tracking Using a Fast-Responding Galvo Scanning Mirror.

Journal Article The journal of physical chemistry. A · August 2023 Real-time three-dimensional single-particle tracking (RT-3D-SPT) allows continuous detection of individual freely diffusing objects with high spatiotemporal precision by applying closed-loop active feedback in an optical microscope. However, the current tr ... Full text Cite
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Recent Grants


Pharmacological Sciences Training Program

Inst. Training Prgm or CMEPreceptor · Awarded by National Institutes of Health · 2025 - 2030

Sloan Research Fellowship

ResearchPrincipal Investigator · Awarded by Alfred P. Sloan Foundation · 2023 - 2027

Unraveling the Viral Infection Pathway with Virus-locked Observation

ResearchPrincipal Investigator · Awarded by National Institute of General Medical Sciences · 2017 - 2027

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Education, Training & Certifications


Stanford University · 2010 Ph.D.
Emory University · 2005 B.Sc.