Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Publications 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Students 
 Summer Research 
 Student Application 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 PD Travel Request 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Monday, April 15, 2019
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Colloquium

Making Movies of Molecules - The Application of X-ray Lasers

Junko Yano
Lawrence Berkeley National Laboratory

Our group is studying the mechanisms of the catalytic reactions in both natural and inorganicsystems. Using various X-ray techniques as tools, we are studying how the catalysts do multielectron reactions, by following the reaction under functional conditions.

We have developed spectroscopy and diffraction techniques necessary to fully utilize thecapability of the X-ray Free Electron Laser facilities (XFELs) for a wide variety of metalloenzymes, and to study their chemistry under functional conditions. One of such methods is simultaneous data collection for X-ray crystallography and X-ray spectroscopy, to look at the overall structural changes of proteins and the chemical changes at metal catalytic sites. In parallel to the detection techniques, we have developed an efficient sample delivery method that involves deposition of droplets on a conveyor belt. This 'Droplet on Tape'(DOT) method, delivers a single drop of the crystal suspension or solution sample onto a tape, which then can be transported to the X ray intersection point with a variable delay in time. In the process, the sample is photochemically or chemically activated at various time delays to capture reaction intermediates with crystallography and spectroscopy.

The presentation will cover our group's recentresults of metalloenzyme research, in particular,for the study of the water oxidation reaction innatural photosynthesis, using X-ray crystallography and X-ray spectroscopy at LCLS(LINAC Coherent Light Source).

IMS is the sponsor of this colloquium.

Host: Michael Wall