Events from the AJ Clark School of Engineering http://eng.umd.edu/events/ Tue, 27 Aug 2019 13:55:34 EDT http://eng.umd.edu/images/clark_logo_4email.gif http://eng.umd.edu/events/ Wednesday, September 18, 2019 2:00 PM, 2108 Chem/Nuc Building , Speaker: Chris Zangmeister, Materials Measurement Lab, NIST Title: The Challenge of Quantification of Aerosol Optical Properties in the Terrestrial Atmosphere Abstract: The scattering and absorption of light by suspended nanoparticles (aerosol) affects the energy balance of the Earth’s atmosphere. High uncertainty exists in the magnitude of heat trapped, but it is currently estimated that the most absorbing class of atmospheric aerosol, black carbon, exceeds that trapped by methane. Quantifying the extent of heating is highly challenging due to variability in the chemical, physical, spatial, temporal and lifetime of aerosols; all of which can affect the quantification of the optical properties (absorption and scattering).  This talk will focus on NIST’s role in the development of instrumentation and methods (i.e. metrology) used to quantify aerosol optical properties. We apply these methods to well-characterized aerosol under controlled conditions to better understand the parameters that influence these properties. Finally, the development of aerosolizable nanomaterials that can be used to calibrate aerosol instrumentation, harmonize measurements, and standardize methods across multiple laboratories will be presented.  Bio: Chris Zangmeister received his B.S in chemistry from Humboldt State University in 1996. He received his Ph.D. in physical chemistry at the University of Arizona (Jeanne E. Pemberton advisor) in 2001 where he studied surface chemistry of atmospherically relevant surfaces. He joined NIST as a National Research Council Postdoctoral Fellow working on the electronic structure of single molecule films used in the storage and transfer of charge across interfaces. In 2011 he became the program leader for aerosol measurements in the Materials Measurement Laboratory at NIST. Since that time, he has worked on methods to classify aerosolized nanoparticles, quantify their optical properties and ways to harmonize methods within the aerosol community. http://aces.umd.edu/events/index.php?mode=4&id=14508 http://aces.umd.edu/events/index.php?mode=4&id=14508 Friday, September 06, 2019 3:00 PM, 1146 AV Williams Bldg, Speaker: Dr. Lars Berglund, Professor/Division Head, Royal Institute of Technology, Sweden Title: Cellulosic Nanomaterials: Processing and Structural Control  Abstract: Cellulosic materials are of increasing interest due to their potential in eco-friendly materials, but also due to research progress in the nanocellulose area. Long slender cellulose nanofibrils, or shorter, rod-like cellulose nanocrystals are studied for basic understanding and for use in new cellulosic nanomaterials such as films, membranes, polymer matrix nanocomposites, coatings, adhesives, aerogels, foams, inorganic/organic hybrids and novel types of functional materials, including applications in organic electronics and photonics. Nanocellulose materials are already used in industry, but nano-structural characteristics are not fully controlled and used. The reason is the difficulty to realize controlled nanoscale component assembly under the demands of industrial scale processing. In order to address these challenges, better characterization methods are needed. New processing concepts, in particular in the context of polymer nanocomposites, are also needed where structural control can be exercised. Interface problems need to be addressed, in particular in the context of moist environments, where properties of cellulosic materials are sensitive to changes in external conditions. Specific challenges with cellulosic materials are presented with the objective to analyze possibilities to obtain true nano-structural control. Although plant-based nanocellulose “particles” can be chemically heterogeneous, and the size distribution can be wide, there is a need for underpinning research in support of technical developments in eco-friendly and functional cellulose materials. http://aces.umd.edu/events/index.php?mode=4&id=14502 http://aces.umd.edu/events/index.php?mode=4&id=14502 Thursday, September 19, 2019 9:00 PM, 1101 A. James Clark Hall, Speaker Donna Strickland| Department of Physics & Astronomy, University of Waterloo Title From Nonlinear Optics to High- Intensity Laser Physics Abstract The laser increased the intensity of light that can be generated by orders of magnitude and thus brought about nonlinear optical interactions with matter. Chirped pulse amplification, also known as CPA, changed the intensity level by a few more orders of magnitude and helped usher in a new type of laser-matter interaction that is referred to as high-intensity laser physics. In this talk, I will discuss the differences between nonlinear optics and high-intensity laser physics. The development of CPA and why short, intense laser pulses can cut transparent material will also be included. I will also discuss future applications. Biography Dr. Donna Strickland is one of the recipients of the Nobel Prize in Physics 2018 for co-inventing Chirped Pulse Amplification with Dr. Gérard Mourou, her PhD supervisor at the time of the discovery. She earned her PhD in optics from the University of Rochester and her B. Eng. from McMaster University. Dr. Strickland was a research associate at the National Research Council Canada, a physicist at Lawrence Livermore National Laboratory and a member of technical staff at Princeton University. In 1997, she joined the University of Waterloo, where her ultrafast laser group develops high-intensity laser systems for nonlinear optics investigations. She is a recipient of a Sloan Research Fellowship, a Premier’s Research Excellence Award and a Cottrell Scholar Award. She served as the president of the Optical Society (OSA) in 2013 and is an OSA Fellow and an SPIE Fellow. For more information, please visit: https://ireap.umd.edu/paintbranch   http://aces.umd.edu/events/index.php?mode=4&id=14475 http://aces.umd.edu/events/index.php?mode=4&id=14475 Friday, September 20, 2019 6:00 PM, 2108 Chem/Nuc Engineering Building, Speaker: Karen Swider-Lyons, Ph.D., Head of Alternative Energy Section in Chemistry Division, and Director of Laboratory for Autonomous Systems Research, U.S. Naval Research Laboratory Title: The Importance of Materials Porosity in Fuel Cell Performance at High Power and Use of Hydrogen Fuel Cells in Unmanned Air Vehicles Abstract:  Hydrogen fuel cells generate electricity directly from the electrochemical conversion of hydrogen and the oxygen and air to water. The appeal of hydrogen fuel cells is that they can offer longer endurance than batteries, because of the combination of the high efficiency electrochemical reactions with the high energy of hydrogen. They are now used commercially as the power source for forklifts and engines in the next generation of electric automobiles and trucks.  Efficient electrocatalysis is often associated with a high performance fuel cell, but operation at high power is more based on the management of the product water of the electrochemical reaction must be ejected effectively from the fuel cell to allow for the ingress of new reactants. Dr. Swider-Lyons' talk will show how high power is affected by materials porosity in the fuel cell electrodes. She will also talk about how high specific power and efficiency in hydrogen fuel cells is important to the next generation of unmanned air vehicles. Bio: Dr. Swider-Lyons is the head of the Alternative Energy Section in the Chemistry Division at the U.S. Naval Research Laboratory, and has recently taken a joint appointment as the Director of NRL’s Laboratory for Autonomous Systems Research (LASR). Her career has been focused on energy materials for batteries and fuel cells and how to integrate them into autonomous systems. She works with a diverse team of researchers and engineers to understand the impact of science on real world applications. Dr. Swider-Lyons has published more than 87 papers in refereed journals and 16 patents, and now leads the Electrochemical Society committee for polymer electrolyte fuel cells and electrolyzers. She earned her Ph.D. in 1992 in Materials Science and Engineering at the University of Pennsylvania, and holds a B.S. in Chemistry from Haverford College (1987).  http://aces.umd.edu/events/index.php?mode=4&id=14408 http://aces.umd.edu/events/index.php?mode=4&id=14408 Wednesday, October 02, 2019 2:00 PM, 2108 Chem/Nuc Building , Speaker: Raymond Schaak, Professor of Materials Chemistry, Pennsylvania State University Title: A Designer's Toolkit for Contructing Complex Nanoparticle Libraries Abstract:  Multi-component nanoparticles offer unique opportunities to combine different properties in a single construct, enabling both multi-functionality and the emergence of new synergistic functions. Synthesizing such multi-component nanoparticles requires simultaneous control over size, shape, composition, and structure, as well as interfaces and spatial arrangements. We have been developing two complementary strategies for synthesizing multi-component nanoparticles. The first approach involves heterogeneous seeded growth, where interfaces and asymmetry are introduced by sequentially growing new nanoparticles off of the surfaces of existing nanoparticles. Complex hybrid nanoparticles of a growing number of materials, configurations, and morphologies can now be synthesized. The second approach involves sequential partial cation exchange reactions, where interfaces and asymmetry are introduced by compositional modifications that are made within an existing nanoparticle. A growing library of complex heterostructured metal sulfide nanoparticles can now be rationally designed and then readily synthesized. Bio: Dr. Raymond Schaak is the DuPont Professor of Materials Chemistry in the Chemistry Department at Penn State University.  Dr. Schaak also has a Courtesy appointment in the Chemical Engineering Department at Penn State and is part of the Penn State Materials Research Institute.  Dr. Schaak received a B.S. degree in chemistry from Lebanon Valley College in 1998.  In 2001, he received a Ph.D. in materials chemistry from Penn State University under the direction of Professor Thomas Mallouk, where he demonstrated the concept of solid-state retrosynthesis for the stepwise and predictable topotactic synthesis of bulk and nanostructured perovskite oxide materials.  From 2001–2003, he was a postdoctoral research associate with Professor Robert Cava at Princeton University, where he worked on the synthesis and physical property characterization of metal carbide, boride, phosphide, oxide, and alloy superconductors.  In 2003, Dr. Schaak began his independent career as an Assistant Professor in the Department of Chemistry at Texas A&M University.  In 2007, he moved to Penn State University as an Associate Professor of Chemistry and was promoted to Professor in 2011.  Dr. Schaak was appointed as the DuPont Professor of Materials Chemistry in 2013.  His research group focuses on developing new chemical strategies for the synthesis of nanoscale solid-state materials and applying these materials to problems at the forefront of modern materials research.  Dr. Schaak has received several prestigious awards, including an NSF Graduate Research Fellowship (1999), an NSF CAREER Award (2006), a Beckman Young Investigator Award (2006), a DuPont Young Professor Grant (2006), a Sloan Research Fellowship (2007), a Camille Dreyfus Teacher Scholar Award (2007), a Research Corporation Scialog Award for Solar Energy Conversion (2010), the National Fresenius Award (2011), the Penn State Faculty Scholar Medal in the Physical Sciences (2012), and the ACS Inorganic Nanoscience Award (2016).  In 2017, Dr. Schaak was elected as a Fellow of the American Association for the Advancement of Science (AAAS). Dr. Schaak served as Awards Committee co-chair of the American Chemical Society’s Division of Inorganic Chemistry (ACS DIC) from 2007–2011 and as chair of the ACS DIC Nanoscience subdivision in 2013.  Dr. Schaak serves on the Cottrell Scholar Selection Committee of the Research Corporation for Science Advancement, is a member of the Editorial Advisory Board of Journal of Solid State Chemistry, and is an Associate Editor of ACS Nano. http://aces.umd.edu/events/index.php?mode=4&id=14507 http://aces.umd.edu/events/index.php?mode=4&id=14507 Friday, October 18, 2019 6:00 PM, Kay Boardrooms, Kim Engineering Building (first floor), UMD, Speaker: Dr. Arumugam Manthiram, Director of Materials Science and Engineering Program, University of Texas Title: Electrical Energy Storage: Near-term and Long-term Perspectives Abstract: Rapid increase in global energy use and growing environmental concerns have prompted the development of clean, sustainable, alternative energy technologies. Renewable energy sources like solar and wind are a promising solution, but electrical energy storage (EES) is critical to efficiently utilize electricity produced from renewable sources as they are intermittent. EES is also the only viable near-term option for electrification of the transportation sector. Rechargeable batteries are prime candidates for EES, but their widespread adoption for electric vehicles and grid electricity storage requires optimization of cost, cycle life, safety, energy density, power density, and environmental impact, all of which are directly linked to severe materials challenges. Lithium-ion batteries have aided the revolution in portable electronics for more than two decades, but the necessity of large batteries for electric vehicles and grid storage prompts the development of next-generation of low-cost battery chemistries. After providing a brief account of the current status, this presentation will focus on the development of advanced materials and new battery chemistries for near-term and long-term battery technologies. Particularly, the challenges and approaches of transitioning from the current insertion-compound electrodes in lithium-ion batteries to new conversion-reaction electrodes with multi-electron transfer to increase the energy density and lower the cost will be presented. Specifically, lithium-based batteries based on low-cobalt oxide and sulfur cathodes and interdigitated alloy anodes will be presented. The challenges of bulk and surface instability and chemical crossover during charge-discharge cycling, advanced characterization methodologies to develop an in-depth understanding, and approaches to overcome the challenges will be presented. Bio: Arumugam Manthiram is currently the Cockrell Family Regents Chair in Engineering and Director of the Texas Materials Institute and the Materials Science and Engineering Program at the University of Texas at Austin (UT-Austin). He received his Ph.D. degree in chemistry from the Indian Institute of Technology Madras in 1981. After working as a postdoctoral researcher at the University of Oxford and at UT-Austin with Professor John Goodenough, he became a faculty member in the Department of Mechanical Engineering at UT-Austin in 1991. Dr. Manthiram’s research is focused on clean energy technologies: rechargeable batteries, fuel cells, and supercapacitors. He has authored more than 760 journal articles with 55,000 citations and an h-index of 117. He directs a large research group with about 30 graduate students and postdoctoral fellows. He has provided research training to more than 200 students and postdoctoral fellows, including the graduation of 58 Ph.D. students and 26 M.S. students. He is the Regional (USA) Editor of Solid State Ionics, Co-Editor of Ceramics in Modern Technologies, and an Associate Editor of Energy and Environmental Materials. Dr. Manthiram is a Fellow of six professional societies: Materials Research Society, Electrochemical Society, American Ceramic Society, Royal Society of Chemistry, American Association for the Advancement of Science, and World Academy of Materials and Manufacturing Engineering. He received the university-wide (one per year) Outstanding Graduate Teaching Award in 2012, the Battery Division Research Award from the Electrochemical Society in 2014, the Distinguished Alumnus Award of the Indian Institute of Technology Madras in 2015, the Billy and Claude R. Hocott Distinguished Centennial Engineering Research Award in 2016, and the Da Vinci Award in 2017. He is a Web of Science Highly Cited Researcher in 2017 and 2018. http://aces.umd.edu/events/index.php?mode=4&id=14417 http://aces.umd.edu/events/index.php?mode=4&id=14417 Wednesday, October 23, 2019 2:00 PM, 2108 Chem/Nuc Building, Speaker: Daeyeon Lee, Professor of Chemical & Biomolecular Engineering, UPenn Title:Towards Scalable Manufacturing of Nanocomposite Films and Membranes Using Capillarity Abstract: In this talk, Dr. Lee will describe new approaches for scalable manufacturing of nanocomposites by harnessing capillary interactions between nanoparticles and fluids. In the first part of this talk, he will describe his work on generating nanocomposite films with extremely high loadings of nanoparticles using capillary rise infiltration (CaRI).  In CaRI, composites are formed by thermally annealing a bilayer of polymer and nanoparticle, which induces imbibition of polymer into the interstices of the nanoparticle packing. He will share current understanding of the transport phenomena involved in CaRI. In particular, the effect of physical confinement and nanoparticle-polymer interactions on the dynamics of polymers will be discussed. In the second part, Lee will describe recent efforts in creating bicontinuous interfacially jammed emulsions (BIJELs), which are a new class of soft materials with potential applications in reactive separation, membrane separation and catalysis. Lee's group has developed a new method to enable continuous generation of bijels using solvent-transfer-induced phase separation (STRIPS). They've developed a new method to enable continuous generation of bijel microparticles, fibers and membranes using solvent-transfer-induced phase separation (STRIPS). A new in situ technique to characterize the mechanical properties of these STRIPS bijel fiber as well as the application of bijels in ultrafiltration and biphasic reactive separation will be discussed. Bio: Daeyeon Lee is Professor in Department of Chemical and Biomolecular Engineering at the University of Pennsylvania. He received his BS in Chemical Engineering at Seoul National University and PhD in Chemical Engineering at Massachusetts Institute of Technology. His research focuses on developing deep understanding of the interactions between soft materials near or at interfaces and extending the obtained knowledge to direct the assembly of macroscopic structures that have designed properties and functionality. He has won numerous awards including the 2010 Victor K. LaMer Award, NSF CAREER Award, 2013 3M Nontenured Faculty Award, 2013 AIChE NSEF Young Investigator Award, 2014 Unilever Award for Young Investigator in Colloid and Surface Science and 2017 Soft Matter Lectureship Award. http://aces.umd.edu/events/index.php?mode=4&id=14506 http://aces.umd.edu/events/index.php?mode=4&id=14506 Friday, October 25, 2019 6:00 PM, Kay Boardrooms, Kim Engineering Building (first floor), UMD, Speaker: Nancy Dudney, Corporate Fellow and Group Leader, OakRidge National Laboratory Title: Material Science Investigations to Advance Li-ion and Li Metal Batteries Abstract: Materials scientists are making important contributions to research and development efforts focused on advancing electrochemical energy storage technology.  Lithium-ion batteries have improved greatly in recent years, but there is continued motivation to increase the specific and volumetric energy density, reduce cost, provide for rapid recharge, and the ensure safety of current and next generation batteries.  Solid-state batteries may be one technology leading beyond current Li-ion designs.  Several examples from the ORNL team programs will be presented, illustrating where studies of mechanical properties, fracture, diffusion and creep, and physical vapor synthesis of battery materials has contributed to new materials and architectures for rechargeable batteries.  Acknowledgements: Research has been supported by the US Department of Energy’s:  > Basic Energy Sciences (BES), Office of Science;  > the Advanced Battery Materials Research Program of Vehicles Technologies (BMR-VT), Office of Energy Efficiency and Renewable Energy; and  > the Advanced Research Projects Agency for Energy (ARPA-E).  http://aces.umd.edu/events/index.php?mode=4&id=14505 http://aces.umd.edu/events/index.php?mode=4&id=14505 Friday, November 08, 2019 6:00 PM, 2108 Chem/Nuc bldg, Speaker: Christopher Li, MSE Professor @ Drexel Univeristy, PA Title: Shape-Symmetry Incommensurate Polymer Crystals Abstract:  Crystallization is ubiquitous in nature and semicrystalline polymers are of crucial importance in our daily life. Because of their long chain nature, polymers crystallize via a complex pathway, leading to profound metastable states and morphologies.  This talk will focus on polymer crystals whose shape is incommensurate with three-dimensional translational symmetry. Examples are helix, hollow tubes and spheres. Not only can this shape-symmetry incommensurateness arise from the intrinsic characteristics of the crystal such as unbalanced chain folding and/or local stress, it also can be imparted by nanoscale confinement. Both cases will be discussed, and emphasis will be given to the formation mechanism, associated properties and possible applications of these unique polymer single crystals. Bio: Dr. Li is a Professor in the Department of Materials Science and Engineering at Drexel University. He received his B.S. degree in Polymer Chemistry from the University of Science and Technology of China in 1995 and his Ph.D. in Polymer Science from the University of Akron in 1999. His research interests center on the structure and morphology of polymers and soft materials. He is a Fellow of the American Physical Society and the North American Thermal Analysis Society.   http://aces.umd.edu/events/index.php?mode=4&id=14500 http://aces.umd.edu/events/index.php?mode=4&id=14500 Thursday, August 29, 2019 11:30 PM, Prince Frederick Hall 1105 & 1111, Meet representatives from Northrop Grumman, learn more about building a better resume, interview dos and don'ts, and how to impress future employers. This event is in a rotating workshop format.  http://aces.umd.edu/events/index.php?mode=4&id=14546 http://aces.umd.edu/events/index.php?mode=4&id=14546