Date & Time: 
Fri, 04/29/2022 - 2:00pm
Speaker: 
Chenhui Zhu
Job title: 
Staff Scientist
Affiliation: 
Advanced Light Source, Lawrence Berkeley National Laboratory
Location: 
ZOOM: Register to be invited
 
Abstract: 

Big scientific user facilities play an important role in many scientific fields. I will give an overview of the x-ray scattering capabilities at the Advanced Light Source (LBNL), which is a DOE synchrotron user facility, with a focus on the small- and wide-angle scattering beamline (SAXS/WAXS), resonant soft x-ray scattering (RSOXS) and tender x-ray scattering. Applications of transmission and grazing incidence geometries will be briefly introduced, followed by examples of high throughput capabilities and in situ sample environments in the areas of organic and perovskite solar cells. Novel contrast mechanisms such as the spectroscopic contrast and bond orientation contrast - enabled by operating x-ray scattering at elemental absorption edges - will be illustrated in polymers and helical liquid crystal phases. In the last part of my talk, I will briefly discuss future directions of our scattering program, including the ongoing DOE-funded ALS-upgrade project, tender coherent scattering endstation to be built and the new SAXS/WAXS program post the ALS-U.

Chenhui Zhu
Biography: 

Dr. Chenhui Zhu is a career Staff Scientist at the Advanced Light Source (ALS) in the Lawrence Berkeley National Laboratory (LBNL). His research interests include developing novel X-ray scattering and imaging techniques for in-situ characterizations of functional materials such as organic photovoltaics, perovskite solar cells, liquid crystals, polymers, nanoparticle self-assembly. He has published more than 100 papers in journals including Phys. Rev. Lett., Nano Lett., Science, PNAS, JACS. And he has been invited to speak at leading institutions such as Diamond Light Source in UK, Max IV in Sweden, Oak Ridge National Laboratory, Stanford Linear Accelerator Center as well as being invited to present at premier conferences such as Gordon Research Conference. Furthermore, he has chaired sessions at the APS annual March meetings, served as reviewer for 20+ journals and many programs at DOE national labs, and co-organized 10+ scientific workshops in the areas of X-ray science and materials science. He is currently a co-chair of the complex materials interface thrust area and a member of the Science Council at the ALS.

Seminar ID: 
202204291400
Department:

Materials Science and Engineering