BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UCLA - ECPv5.14.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:UCLA
X-ORIGINAL-URL:https://www.chemistry.ucla.edu
X-WR-CALDESC:Events for UCLA
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20240310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20241103T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240226T160000
DTEND;TZID=America/Los_Angeles:20240226T170000
DTSTAMP:20260614T195214
CREATED:20231219T222018Z
LAST-MODIFIED:20231220T010327Z
UID:31875-1708963200-1708966800@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: Matthew Sheldon
DESCRIPTION:Prof. Matthew Sheldon Flyer \nTalk Title: Plasmonic Platforms for Polaritonic Chemistry \nAbstract: We are developing experimental platforms to probe vibrational strong coupling (VSC) between molecules and resonant infrared (IR) nanophotonic architectures\, in order to understand how this coupling can fundamentally control chemical reactivity\, as well as enable new classes of light-matter interaction. This method of altering the potential energy surface of a chemical process via coherent\, electromagnetic perturbation of vibrating bonds has also been termed “polaritonic chemistry”. We employ a combined experimental strategy leveraging expertise in (1) the design of IR “metasurfaces” composed of plasmonic metal substrates that provide tailorable VSC to molecules within their optical near-field; and (2) multiple continuous wave (CW) spectroscopic techniques that enable analysis of several non-equilibrium\, dynamic electronic effects in the metal substrate. Taken together\, these tools allow studies into new regimes of spectral bandwidth (e.g. simultaneous multi-mode coupling)\, coupling strength\, and time domains (e.g. studies of long lived and steady-state phenomena) that have been inaccessible using conventional optical cavities and time-resolved spectroscopies performed to date. Vibrational strong coupling is fundamentally interesting because it is a coherent interaction between radiation and molecular motion. The direct manipulation of a molecular process using externally controlled forcefields to obtain a desired outcome\, i.e. “coherent control” or “quantum control”\, has been a long-standing goal connected to the central aims of chemical science. Thus\, this presentation will discuss the limits of chemical analysis and chemical control at interfaces leveraging a framework based on coherent interactions between controllable features of the engineered surface geometry and the molecular systems under study. \n 
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-matthew-sheldon/
LOCATION:Collaboratory Yoo Seminar & Conference Hall YH4222 
CATEGORIES:Physical,Physical Chemistry Seminar
END:VEVENT
END:VCALENDAR