LDRD Seminar: May 28, 2019
Three Argonne researchers will discuss their Laboratory-Directed Research and Development (LDRD) sponsored work at the LDRD Seminar Series presentation Tuesday, May 28, 2019, at 12:30 p.m. in Building 212, Room A157. All are welcome to attend.
Visit the LDRD website to view upcoming seminars.
“Imaging Matter at the Femtoscale” by Physicist Ian Cloet (PHY)
The strong interaction, which is described by a theory call quantum chromodynamics (QCD), is the least understood component of the Standard Model of particle physics. QCD describes how fundamental particles called quarks and gluons interact to form the vast bulk of all visible matter, e.g., protons, neutrons and nuclei. A mysterious feature of QCD, called confinement, is that the quarks and gluons can never be observed in isolation and are always bound inside strongly interacting particles called hadrons, where the pion, proton and neutron are the most important examples. Advances in theory have allowed us to define observables that provide 3-D images of the quarks and gluons bound inside hadrons and nuclei — in both coordinate and momentum space. These objects will soon be measured for the first time at, e.g., Jefferson Lab, and then with much greater detail at a future electron-ion collider. This talk will provide a snapshot of this physics, and illustrate how it will help answer some of the deepest questions in fundamental science: What is the origin of the mass of visible matter? How is the proton’s spin distributed between color-entangled quarks and gluons? How do nuclei emerge from the fundamental theory of the strong interaction (QCD)?
Ian Cloet is group leader of the Physics Theory Group at Argonne. He received his Ph.D. from The University of Adelaide (Australia) in 2007; and held postdoctoral positions at Argonne, University of Washington and The University of Adelaide. Ian became staff at Argonne in 2013. Ian’s research is in the field of hadron physics, with a focus on the quark and gluon tomography of hadrons and nuclei.
“Layered Nanosheet Co3O4 Catalysts for Low-Temperature Exhaust Applications,” by Engine Research Engineer Hee Je Seong (ES)
Aftertreatment technologies that remove harmful particulate and gaseous emissions from diesel- and gasoline-powered vehicles depend mostly on costly platinum group metals (PGMs). Since this cost accounts for over one-third of the total manufacturing cost, such as diesel particulate filters (DPFs) for instance, low- cost non-PGM catalysts can lead to a huge cost reduction. As a promising non-PGM catalysts, Co3O4 is shown to be active at oxidizing particulates, CO and hydrocarbons, which are major harmful emissions from engines. The presenter has invented a synthetic procedure that makes a unique morphology of Co3O4. This multilayered nanosheet Co3O4, which is chained with approximately 20-nm spherical nanoparticles, showed superior soot oxidation performance over typical Co3O4 synthesized by a conventional precipitation method. The material was investigated primarily for low-temperature DPF application. Not only does it have an excellent soot oxidation capability, but also shows good performance for CO and C3H8 oxidation from reactor tests.
Hee Je Seong, engine research engineer in the Energy Systems division, joined Argonne as a postdoctoral appointee, exploring fundamental physicochemical properties of engine particulates for better understanding soot formation/oxidation during the combustion process. Since 2014, he has been leading Argonne research on particulate emissions and diesel/gasoline particulate filter (D/GPF) applications for elucidating filtration and regeneration processes.
“Advancing Vehicle Functionality and Security Through Testbed Development and Analysis,” by Cyber Security Analyst Roland Varriale (SSS)
Vehicles, and their associated infrastructure, have come under scrutiny for utilizing insecure protocols and deprecated architectures compared to modern mobility solutions. In this talk, we will go over how we leverage the machine learning, cyber security and mobility subject matter expertise at Argonne to provide a holistic look at mobility security. Furthermore, we develop testbeds as a means of demonstrating and testing defensive techniques that may thwart traditional cyber attacks against these insecure components.
Roland Varriale has worked in various capacities from a business analyst to an intelligent transportation systems researcher and developer. He is interested in the application of security principles and protocols to VANETs and Intelligent Transportation Systems as well as personal device security on the “Internet of Things.” He currently participates on vehicle projects supported by the U.S. Department of Energy Vehicle Technologies Office, Department of Transportation’s Volpe Center and the National Motor Freight Traffic Association. His current work promotes securing vehicle to vehicle networks, namely through evaluating trust-based attacks, and testing the current implementations of vehicle charging infrastructure for vulnerabilities.