BEGIN:VCALENDAR VERSION:2.0 PRODID:-//ZContent.net//ZapCalLib 1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT SUMMARY:The interplay of disorder and coupling in carbon nanotube polariton cavities as observed with ultrafast 2D white-light spectroscopy LOCATION:Chemistry, A101 TZID:America/Denver DTSTART:20220224T160000 UID:2026-05-16-03-57-50@natsci.colostate.edu DTSTAMP:20260516T035750 Description:Abstract:  I will present results in which we have placed semi conducting carbon nanotube thin films in between two highly reflective mir rors to create excitonic polaritons. The intensity of light inside cavitie s like these are so strong that the excitons on different nanotubes become coupled to one another\, creating spatially delocalized wavefunctions. We have created a cavity made of carbon nanotubes in which we have purposely added energetic disorder by using two different bandgaps of nanotubes. We spatially separated the nanotubes by 200 nm\, and show that energy flows from one to the other\, which we model with Redfield theory.  I will disc uss how these ideas might be extended to control exciton transfer in light harvesting devices.\n\n \;\n\nBio:  Martin T. Zanni is the Meloche-B ascom Professor of Chemistry at the University of Wisconsin-Madison. He re ceived his PhD from the University of California-Berkeley\, working with D an Neumark\, and was an NIH Postdoctoral Fellow at the University of Penns ylvania with Robin Hochstrasser. He is one of the early pioneers of 2D IR spectroscopy and has made many technological innovations that has broadene d the capabilities and scope for a wide range of multidimensional spectros copies and microscopies. He utilizes these new techniques to study topics in biophysics\, chemical physics\, photovoltaics\, and surfaces. He founde d PhaseTech Spectroscopy Inc.\, which is the first company to commercializ e 2D IR and 2D Electronic spectroscopies. He has received many national an d international accolades for his research. Notably\, he was recently elec ted into the American Academy of Arts and Sciences\, and\, yet to be annou nced\, he is the 2022 recipient of the Lippincott Award from the OSA. 4:00 pm END:VEVENT END:VCALENDAR