WK4 - High-Speed Imaging

High-speed imaging with visible light is a well-established technique. However, in many cases, visible light has severe limitations due to reflection, refraction, and multiple scattering. Especially in optically dense systems, visible light lacks penetration ability as opposed to X-rays.

Synchrotron-based ultra-high-speed X-ray imaging is being developed at the APS, utilizing the unique parameters of this source. It is proving to be a unique and invaluable tool to image the internal structures of optically opaque systems with micrometer spatial resolution and sub-nanosecond temporal resolution. Currently, we can take X-ray edge-enhanced images of fuel jets with 100-ps exposure times, see the motion of the internal parts of a stainless steel fuel injector, and make X-ray movies of the pinch-off singularity water droplets, all at a rate of tens of thousands of frames per second.

The fundamental insights this technique can provide are not otherwise possible and are much needed in many research areas dealing with ultra-fast and transient phenomena. Examples include dynamics of multiphase flows; materials behavior under extreme conditions, such as impact or explosion; complex materials mechanics; self-propagating reactions in multi-component systems; and many other applications that are of major importance to transportation safety, national security, energy efficiency, emissions control, and development of new materials.

To promote the science that can be facilitated with the ultrafast technique at the APS, the goals of this one-day workshop are (1) to present the current capabilities this nascent technique, (2) to examine its applicability and explore its utility to existing unsolved scientific questions in a much broader community, and (3) to discuss new possibilities and identify directions for future developments.

Agenda

8:55 – 9:05	Welcome and Introductory Remarks Organizers

9:05 – 9:35	Current State of X-ray High-speed Imaging at the APS Kamel Fezzaa, Advanced Photon Source

9:35 – 10:15	Current Challenges and Potential Application of High-speed X-ray Imaging to the Investigation of Solidification and Crystallization Dynamics Ralph Napolitano, Iowa State University

10:15 – 10:35	Coffee break

10:35 – 11:15	Life and Death of a Drop: What We Can Learn about Dynamic Singularities? Sidney Nagel, University of Chicago

11:15 – 11:55	Gas-mediated Impact Dynamics on a Fine-grained Granular Bed John Royer, University of Chicago

11:55 – 1:20	Lunch

1:20 – 2:00	Correlating the Spray Primary Breakup Process for DI Automotive Injectors to Their Design Ming-Chia Lai, Wayne State University, Michigan

2:00 – 2:40	Study of Diesel Spray Primary Breakup Rolf Reitz, University of Wisconsin, Madison

2:40 – 3:20	Fracture and Friction at Microscopic and Macroscopic Scales Michael Marder, University of Texas, Austin

3:20 – 3:40	Coffee break

3:40 – 4:20	Investigation of Dynamic Failures in Metals using High-speed Photography and Infrared Thermograph Guruswami Ravichandran, California Institute of Technology

4:20-4:30	Discussion and Adjourn

U.S. Department of Energy Office of Science | Office of Basic Energy Sciences | UChicago Argonne LLC

Privacy & Security Notice | Contact Us | Site Map