(1)Development of infrared laser-induced fluorescence spectroscopy (IR-LIF) techniques with single-photon sensitivity;
(2)Applications of ultra-sensitive IR-LIF spectroscopy in surface molecular reaction dynamics.
[1] Jascha A. Lau, Li Chen, Arnab Choudhury, Dirk Schwarzer, Varun B. Verma, Alec M. Wodtke, “Transporting and concentrating vibrational energy to promote isomerization.” Nature 2021 2021 589 (7842)
[2] Li Chen, Jascha A. Lau, Dirk Schwarzer, J？rg Meyer, Varun B. Verma, Alec M. Wodtke, "The Sommerfeld ground-wave limit for a molecule adsorbed at a surface." Science 2019, 363(6423): 158-161.
[3] Li Chen, Dirk Schwarzer, Varun B. Verma, Martin J. Stevens, Francesco Marsili, Richard P. Mirin, Sae Woo Nam and Alec M. Wodtke, "Mid-infrared Laser-Induced Fluorescence with Nanosecond Time Resolution Using a Superconducting Nanowire Single-Photon Detector: New Technology for Molecular Science." Accounts Chem Res 2017, 50 (6), 1400-1409.
[4] Lau, J. A., Arnab Choudhury, Li Chen, Dirk Schwarzer, Varun Verma, Alec.M. Wodtke. "Observation of an isomerizing double-well quantum system in the condensed phase." Science 2020 367(6474): 175-178.
[5] Li Chen, Dirk Schwarzer, Jascha A. Lau, Varun B. Verma, Martin J. Stevens, Francesco Marsili, Richard P. Mirin, Sae Woo Nam and Alec M. Wodtke, "Ultra-sensitive mid-infrared emission spectrometer with sub-ns temporal resolution. " Opt Express 2018 , 26 (12), 14859-14868. (OSA Spotlight)
[6] Li Chen, H. Ueta, R. Bisson, R. D. Beck, Vibrationally bond-selected chemisorption of methane isotopologues on Pt(111) studied by reflection absorption infrared spectroscopy. Faraday Discuss 2012 157, 285-295.
Li Chen, H. Ueta, R. Bisson, R. D. Beck, Quantum state-resolved gas/surface reaction dynamics probed by reflection absorption infrared spectroscopy. Review of Scientific Instruments 2013 84, 053902 1-9. (Editor's picks)
