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CPE 2.218

United States

September 2016

ChE Special Communications Seminar – “A New Frontier for Communicating Science: Social Media” by Sarah Mojarad

09/27/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

ABSTRACT:  Technological advances have, and will in the future, enable opportunities for individual scientists to communicate in new and more effective ways. Scientist must take advantage of these technologies and communicate! To encourage young scientists to communicate their work, I created a new course at Caltech called “Social Media for Scientists.” I will describe this course, where students from multiple scientific disciplines are exposed to important issues involving social media. Through a deeper understanding of social media concepts, students are able…

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October 2016

The Truskett Group presents: “Spontaneous formation of virus-like structures in soft anisotropic colloids” by Willem Kegel

10/04/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Tom Truskett ABSTRACT:  In this talk I will present recent progress in the creation and structure formation of several kinds of ‘patchy’ colloids with various shapes and interactions between them. I will focus on recent experimental findings using colloids with soft (‘floppy’) layers and broken symmetry. The soft layers deform at short distance between the particles, giving rise to directional bonds that in turn lead to low-dimensional structures such as bubbles, sheets and shells. We developed a simple computational model that…

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ChE Seminar – “Squishy Bubble Dynamics In Porous Media” by Lisa Biswal, Rice University

10/18/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Keith Johnston ABSTRACT: The use of foam in enhanced oil recovery (EOR) applications is being considered for gas mobility control to ensure pore-trapped oil can be effectively displaced. In fractured reservoirs, gas tends to channel only through the highly permeability regions, bypassing the less permeable porous matrix, where most of the residual oil remains.  Because of the unique transport problems presented by the large permeability contrast between fractures and adjacent porous media, we aim to understand the mechanism by…

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Seminar – “Recent Developments in Downstream Bioprocessing: Multimodal Chromatography, Affinity Precipitation and Integrated Bioprocessing” by Steven Cramer, Rensselaer Polytechnic Institute

10/27/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Tom Truskett ABSTRACT: This presentation will focus on recent developments in our lab in three areas of downstream bioprocessing; multimodal chromatography, affinity precipitation and integrated bioprocessing. Fundamental studies into the nature of selectivity in multimodal chromatography will first be presented. This work will include chromatographic studies with various protein and multimodal ligand libraries, all-atom explicit Molecular Dynamics (MD) simulations and a range of biophysical studies to shed insight into the underlying nature of selectivity in these important new classes…

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November 2016

ChE Seminar – “The Digital Future of Process Operations ” by Larry Megan, Praxair

11/10/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Michael Baldea ABSTRACT:  While automation has been a significant part of the process industries for the last 40 years, the current explosion in low cost sensors, communications, cloud computing and other advances is leading the next generation of safety, reliability and efficiency improvements. This talk will provide our perspective on today's leading digital applications in process equipment, plant operations and supply chains. Furthermore, it will discuss future applications, needs, and the engineering skills required, and hopefully inspire others creativity…

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ChE Seminar – “Hybrid biological and catalytic processes to produce chemicals and materials from biomass” by Gregg Beckham, NREL

11/22/2016 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Lydia Contreras ABSTRACT: Biomass conversion to fuels, chemicals, and materials has the potential to offset significant amounts of petroleum and represent a more sustainable approach to manufacture everyday products. To that end, our group focuses on developing integrated processes from sugars and lignin in biomass to products through the combination of biological and chemo-catalytic processes. This talk will review two recent developments focused on the production of PAN-based carbon fibers from sugar-derived building blocks and the conversion of lignin…

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January 2017

Seminar – “Perovskite and Germanium Semiconductors: New Optical Materials for Energy Conversion Devices” by Javier Vela, Iowa State University

01/17/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Delia Milliron ABSTRACT: Organometallic halide perovskites have quickly become one of the most interesting semiconductors for photovoltaics, with solar cells made of these materials reaching power conversion efficiencies of over 22%. We were among the first to synthesize colloidal CH3NH3PbX3 (X = I, Br) nanocrystals with different morphologies (dots, rods, wires, sheets), and showed that CH3NH3PbI3 nanostructures monitored at the single particle level show shape-correlated PL emission across whole particles, with little photobleaching observed and very few off periods.…

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ChE Seminar – “First principles studies of heterogeneous (electro)catalysis: incorporating structural complexity into catalyst reactivity and screening studies” by Jeff Greeley (Purdue University)

01/24/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Gyeong Hwang ABSTRACT: Advances in the theoretical understanding of interfacial catalysis have, over the past decade, enabled use periodic Density Functional Theory studies for screening of a surprisingly large ensemble of heterogeneous catalytic reactions at both gas/solid and liquid/solid interfaces.  A significant challenge that has recently emerged in the field, however, is to extend these analyses to more structurally and mechanistically complex catalytic structures that cannot be described by traditional, idealized surface models.  Successfully addressing this challenge, in turn,…

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ChE Seminar – “Repurposing the translation apparatus for synthetic biology” by Michael Jewett

01/31/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Lydia Contreras ABSTRACT:  Imagine a world in which we could adapt biology to manufacture any therapeutic, material, or chemical from renewable resources, both quickly and on demand. Industrial biotechnology is one of the most attractive approaches for addressing this need, particularly when large-scale chemical synthesis is untenable. Unfortunately, current approaches to engineering organisms remain costly and slow. This is because cells themselves impose limitations on biobased product synthesis. It is difficult to balance intracellular fluxes to optimally satisfy a…

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February 2017

ChE Seminar – “The Future of Solar Energy” by Robert Armstrong (Director, MIT Energy Initiative)

02/07/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Tom Edgar ABSTRACT: Solar energy holds the best potential for meeting humanity’s future long-term energy needs while cutting greenhouse gas emissions – but to realize this potential will require increased emphasis on developing lower-cost technologies and more effective deployment policy. This talk presents results of a comprehensive study on The Future of Solar Energy by the MIT Energy Initiative (MITEI), which is part of a series of multidisciplinary reports that examine the role various energy sources could play in…

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Pirkey Lectureship Seminar – “Mesoporous silica nanoparticle supported lipid bilayers (protocells) for individual cell targeting and CRISPR delivery” by Jeff Brinker

02/21/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Dr. John Ekerdt ABSTRACT: Mesoporous silica nanoparticle-supported lipid bilayers (protocells) are an emerging class of nanocarriers that synergistically combine the advantages of mesoporous silica nanoparticles (MSNs), including tunable size, shape, and pore characteristics that facilitate high loading capacities, with the advantages of liposomes such as enhanced circulation, ease of synthesis, biocompatibility, flexible formulations, and capacity for targeting. Protocell assembly occurs upon fusion of the liposome to the surface of the MSN, resulting in encapsulation of the MSN core within…

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March 2017

ChE Seminar – “Eliminating Needless Chlorine in Industry – The Direct Synthesis of H2O2 and ‘Green'” by David Flaherty

03/07/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: C. Buddie Mullins ABSTRACT: H­2O2 is an environmentally-benign and selective oxidant useful for epoxidations and bleaching, yet, its use is limited because the anthraquinone oxidation process is viable only at very large scales. Currently, many oxidation processes use chlorine-based oxidants (Cl2, HOCl) at a global rate of 63·109 kg Cl yr-1. Within the United States roughly 60% of chlorine is used as an oxidant in processes where chlorine does not appear in the final products (e.g., production of propylene…

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ChE Seminar – “The oxidative evolution of organic carbon in the atmosphere” by Jesse Kroll

03/28/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Lea Hildebrandt Ruiz ABSTRACT: Organic species in the Earth’s atmosphere play a central role in many processes important to human health, ecosystem health, and global climate: they can serve as pollutants, they influence atmospheric oxidant levels, and their oxidation products include secondary pollutants such as ozone and secondary organic aerosol. However our ability to predict these effects is limited by the immense complexity of this chemical system, which results from not only the large number of species emitted into…

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April 2017

ChE Seminar – Dr. Chinedum Osuji (Associate Professor of Chemical & Environmental Engineering, Yale University)

04/11/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States + Google Map

Host: Dr. Venkat Ganesan ABSTRACT: Self-assembly of block copolymers and small molecule mesogens gives rise to a rich phase behavior as a function of temperature, composition, and other relevant parameters. The ability to precisely control their chemical functionality combined with the readily tunable characteristic length scales (~1-100 nm) of their self-assembled mesophases position these systems as a versatile and attractive class of materials for compelling applications ranging from membranes for size and chemo-selective transport, to lithography. As a result there…

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May 2017

ChE Seminar – “Macromolecular Therapeutics and Delivery Agents” by James Hedrick

05/02/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Grant Willson ABSTRACT: The targeting and controlled release of therapeutic agents or probe molecules to specific organs and specific cells in the body is one of the major challenges in developing more effective therapies.  Central to this goal are the many materials challenges associated with the encapsulation, transport and release of such agents at a specific time and place in the exceedingly complicated and dynamic environment of living organisms. Living organisms have evolved a variety of interfaces and barriers…

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October 2017

“Getting Published” – a panel hosted by Dr. Delia Milliron

10/03/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

You are invited to "Getting Published," a panel hosted by Dr. Delia Milliron on Tuesday, October 3 at 3:30pm in CPE 2.218. This panel discussion aims to provide insight on the process of publishing in peer reviewed journals, from selecting a journal through the review process and ultimately how to help your published article have the most impact. The panelists will be UT ChE faculty members who currently serve as editors of journals across areas related to chemical engineering. The panel…

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ChE Seminar – “Engineering Next-Generation T Cells for Cancer Immunotherapy” by Dr. Yvonne Chen (University of California, Los Angeles)

10/17/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Dr. Lydia Contreras ABSTRACT The adoptive transfer of T cells expressing chimeric antigen receptors (CARs) has demonstrated clinical efficacy in the treatment of advanced cancers, with anti-CD19 CAR-T cells achieving up to 90% complete remission among patients with relapsed B-cell malignancies. However, challenges such as antigen escape and immunosuppression limit the long-term efficacy of adoptive T-cell therapy. Here, I will discuss the development of next-generation T cells that can target multiple cancer antigens and resist immunosuppression, thereby increasing the…

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ChE Seminar – “Single Polymer Dynamics of Architecturally Complex Materials: Entangled Solutions, Combs, and Bottlebrush Polymers” by Dr. Charles Schroeder (University of Illinois at Urbana–Champaign)

10/24/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: by Dr. Thomas Truskett ABSTRACT In this talk, I will discuss recent work from my group that effectively extends the field of single polymer dynamics to new materials, including polymers with complex topologies including rings, combs, and bottlebrush polymers. In the first part of the talk, polymer dynamics in semi-dilute unentangled and entangled DNA solutions are studied in extensional flow using single molecule techniques. Semi-dilute polymer solutions are commonly encountered in printing applications for organic electronics, yet despite recent…

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November 2017

ChE Seminar – “Studying how particles evolve in the atmosphere by trapping them in an outdoor cage” by Dr. Don Collins (Texas A&M University)

11/28/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Drs. Lea Hildebrandt Ruiz and David Allen ABSTRACT I will present results from the first field use of a pair of portable chambers we developed to study processing and growth of aerosol particles as they are exposed to gas phase composition and solar intensity that mirror that just outside.  The chambers were located in a clearing within a state forest just north of Houston during a pair of experiments that together spanned the period from June, 2015 to October, 2016.  I…

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December 2017

ChE Pirkey Seminar – “Eco-efficient downstream processing of biofuels by process intensification” by Dr. Tony Kiss (University of Manchester, UK)

12/05/2017 @ 3:30 pm - 4:30 pm
CPE 2.218 United States

Host: Dr. Michael Baldea; Pirkey Endowed Lectureship ABSTRACT The need for greater sustainability for the production of fuels and chemicals has spurred significant research to substitute fossil fuel sources by renewable sources in industry. However, most research in biorefineries has focused on the conversion (e.g. thermo-chemical, biological, chemical) or pre-treatment parts, whereas the real cost of biorefineries is in the downstream processing that accounts for 60-80% of the total cost of production. The critical issue of costly separations can be addressed by…

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