Welcome

 

About Our Group:

We design, build and exploit new types of instruments that provide qualitatively new pictures of how chemical reactions occur. By coupling mass-selective vibrational spectroscopy with cryogenic ion processing, we are able to study a wide variety of chemical phenomena, including small molecule activation, gas-liquid interfacial chemistry, and intracluster hydrogen bonding.

News

Congratulations to Hyun Wook Choi for getting one of the best poster awards at the Vibrational Spectroscopy GRC!
August 10, 2026
Hyun presented his excellent work on boron clusters from his work with Lai-Sheng. He was also a co-author of our poster (along with Erica, Anne McCoy, Yarra Hassan, and Abhi...
Chris Johnson, Sean Eddington, and Anne McCoy joined up with Hyun and Erica at the Vibrational Spectroscopy GRC in New Hampshire
August 10, 2026
Sean, Chris and Anne all gave invited talks and Hyun walked away with a best poster prize…quite a haul!
June 4, 2026
We were joined by visitors Burak Tufekci from Kit Bowen’s lab and Alexandra Tsoukala from Radboud University in The Netherlands, who both shared their work with back-to...

Selected Publications:

Autobiography of Mark A. Johnson


Microcanonical Kinetics of Water-Mediated Proton Transfer in 4ABAH+‧(H2O)n=4-6 Clusters (ABA = Aminobenzoic Acid): A Model System for Size-Dependent Relaxation to Ergodic Behavior


Microcanonical Kinetics of Water-Mediated, Long Range Proton Transfer in Microhydrated 4-Aminobenzoic Acid