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The ability to three-dimensionally pattern semiconducting electronic and optoelectronic materials could provide a transformative approach to creating active electronic devices without the need for a cleanroom or conventional microfabrication facilities. This could enable the generation of active electronics on-the-fly, using only source inks and a portable 3D printer to realize electronics anywhere, anytime, including directly […] |
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Presentation Abstract: Huge strides have made in the widespread adoption of autonomous and human-in-the-loop cyber-physical systems (CPS), partly fueled by dramatic improvements in learning-based techniques. An important aspect of such CPS applications is that they are safety-critical: any undesirable behavior by such systems can cause serious harm to human lives or property. The formal methods […]
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PENN GENETICS SPECIAL SEMINAR | David Sanders, PhD “A network-based blueprint for understanding condensates in health and disease” David W Sanders, PhD Postdoctoral Fellow Chemical and Biological Engineering Princeton University Zoom Link Contact Info: For more information, please contact Sadie Robinson at sarahjr@upenn.edu This is a joint seminar between the Departments of Genetics and Bioengineering |
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The invisibility cloak in Harry Potter and the dreams of invisibility as a superpower are no longer fiction. With the invention of metamaterials, they are theoretically and experimentally possible in real life. Metamaterials — materials that are engineered to have properties that are not found in naturally-occuring materials — allow us to overcome physical limitations. […]
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Many cryptographic protocols will be rendered insecure if sufficiently powerful quantum computers are built. While this remains at least a few decades away, there is another, more immediate, problem: many widely-used security analysis techniques rely on properties of classical information that do not hold in the quantum setting, rendering the security of many schemes unclear […] |
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This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. This week’s panelists will be in-person as well. PANEL DISCUSSION Please join us for a lively panel discussion featuring GRASP Faculty members including Dr. Nadia Figueroa, Dr. Dinesh Jayaraman, and Dr. Marc Miskin. This panel will be moderated by Penn Engineering SEAS […]
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Join P.E.S.T.L.E. for our Zoom Orientation session on Friday, February 3 at 4:00 pm! Please email us at pestle@seas.upenn.edu if you have any questions. |
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Solid/water interfacial phenomena are pervasive in both natural and built environments. Heat exchangers, membrane pores, and packed bed reactors are all examples of solid/water interfaces where interfacial phenomena and small-scale fluid physics can have outsized influences on process efficacy and sustainability. Even innocuous surfaces such as reactor walls are not inert and can actively interact […]
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This is an in-person only event with attendance in Raisler Lounge (Towne 225). The presenter will be in-person as well. ABSTRACT Many of us foresee of a future in which AR eyeglasses are worn all day, replacing of our current prescription eyewear. That future may not arrive for a while and predicting its benefits and […] |
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ABSTRACT: I'll present research on using large language models (LLMs) to build explainable classifiers. I will show off work from my PhD students and collaborators on several recent research directions: Image classification with explainable features (https://arxiv.org/abs/2211.11158) Text classification with explainable features (work in progress) The importance of faithfulness in explanations (https://arxiv.org/abs/2209.11326) (Time permitting) A […]
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This is a hybrid event with in-person attendance in Levine 307 and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT The ability of a system to correctly respond to a sudden adverse event is critical for high-level autonomy in complex, changing, or remote environments. By assuming continuing structural knowledge about […] |
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Despite impressive success in domains such as vision and language, machine learning is still far from reliable integration into many challenging real-world scenarios, such as healthcare, where the coverage of existing data and the ability to collect new, diverse data are limited. This talk focuses on mathematically formulating and addressing some of the challenges in […]
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Today’s hardware cannot keep secrets. Indeed, the past two decades have seen the discovery of a slew of attacks where an adversary exploits hardware features to leak software’s sensitive data. These attacks have shaken the foundations of computer security and caused a major disruption in the software industry. Fortunately, there has been a saving grace, namely the widespread adoption […]
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Metabolism supports the biosynthetic and energetic demand of all living creatures. Over decades, we have accumulated knowledge of how individual enzymes work in vitro, but we don’t have a good sense about how they work together in vivo. Thus, fundamental to our understanding of metabolic operation is the ability to measure metabolic activity in vivo. […] |
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This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT Intelligent action is critical in robotics, more so than much of AI where results are often mediated by humans in the loop. That said, robotics also needs to […]
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Computer simulations have become critical elements of the medical device design and regulatory approval process. Naturally, the predictability and therefore value of such simulations depends highly on their accuracy. Especially for the design of heart valve replacements and repair technologies computer simulations have become a critical tool. While much progress has been made in modeling […] |
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Spring 2023 Hybrid-Seminar Series Mondays 1.00-2.00 pm (EST) Towne 225 / Raisler Lounge “For Zoom link, please contact <manu@seas.upenn.edu>” |
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In the past half-century, partial differential equation (PDE)-based computational models have emerged as indispensable for science and engineering. However, remarkable gaps still exist between state-of-the-art simulations and reality, meaning that many simulations are ineffective in supporting decision-making or design under uncertainty for complex systems (e.g., Mars landing). To bridge the gap and fulfill challenging real-world […]
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Expressive cryptography, including Secure Multi-Party Computation (SMPC) and Fully Homomorphic Encryption (FHE), has the potential to enable transformative new applications, drawing significant interest from industry. Unfortunately, it is often slow and resource-intensive, making those applications difficult to realize. For example, SMPC enables multiple organizations (e.g., hospitals) to run joint computations on their data (e.g., for […] |
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Abstract: Machine learning algorithms are increasingly used in conjunction with optimization to guide decision making. A key challenge is aligning the machine learning loss with the decision-making loss. Existing solutions have limited flexibility and/or scale poorly to large datasets. We propose a principled decision-aware learning algorithm that uses a Taylor expansion of the optimal decision […]
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We will discuss methods of data lookup, with a focus on hash sets / tables, including motivation, properties, and variants. This will be in the context of a "CS 2" or data structures course. We will assume a basic familiarity with programming and comfort with implementing resizable lists; as well as knowledge of (but not […]
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Abstract: A fundamental question in nature is how the cellular processes are organized with sequential and spatial precision in a dynamic and densely packed environment. Evidence is now mounting that biomolecular condensation, a demixing process mediated by phase separation coupled with percolation, dictates the organization principles of cellular biochemistry. From the perspective of synthetic biology, […] |
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Divide-and-Conquer and incremental compilation strategies are widely used in software compilations. To enable these strategies for FPGAs, this dissertation presents an open-source framework called PRflow, which can speed up the compilation times by at most an order of magnitude. PRflow supports different optimization levels to make better trade-offs among compile-time, area, and performance. -O0 (PRflow_RISCV) […]
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Humans exhibit a strong tendency to associate with those similar to them. This tendency, termed homophily in the social sciences, impacts both the structure of society and its outcomes. In this talk, Nicole Immorlica discusses the mathematics of homophily. She first quantifies its theoretical implications for geographic segregation. We will see that even tolerant societies […]
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Cell adhesion molecules (CAMs) are ubiquitous in multicellular organisms and specify precise cellular interactions in processes as diverse as tissue development and immune cell trafficking. We have generated an array of synthetic CAMs by combining orthogonal extracellular interactions with native intracellular domains. Diverse homotypic or heterotypic extracellular binding domains specify the connectivity between cells, while […] |
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This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT The human body is capable of dexterous manipulation in many different environments. Some environments, however, are challenging to access because of distance, scale, and limitations of the body […] |
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Abstract: The recent discovery of the CRISPR genome editing systems has been revolutionizing both basic biological research and the treatment of human genetic disorders. However, there are remaining challenges in improving the precision and multiplexity of the current CRISPR systems for genome manipulation. In this seminar, I will overview our recent development of highly specific […] |
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Wind energy is poised to play a considerable role in the global transition to clean-energy technologies within the next few decades. Modern wind turbines, like aircraft and other aerodynamic structures, are typically designed with the assumption that the flows they encounter will be uniform and steady. However, atmospheric flows are highly unsteady, and systems operating […]
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Controlling many-body entanglement promises to yield both fundamental insights and practical advances. In particular, generating squeezed states for entanglement-enhanced metrology is an important near-term application of quantum systems. In past work, squeezing has been achieved in a clean, controlled setting using all-to-all Ising interactions between ultracold atoms in an optical cavity. By contrast, optically-addressable spin […]
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In the current digital and decentralized world, there is an imminent need for technologies that can provide a fast approach to compute on private data while guaranteeing secrecy. Secure Multiparty Computation (MPC) is one such cryptographic technology that provides an efficient approach to compute on private data. At a high level, MPC is a distributed […] |
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Launched in May 2021, the Future Leaders in Mechanobiology is a monthly seminar series featuring up-and-coming leaders in mechanobiology–PhD students and postdocs from a wide range of fields, backgrounds, and institutions. By providing an international stage to share one’s work and opportunities to interact with researchers at all career stages, we aim to create an inclusive and […]
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This is a hybrid event with in-person attendance in Levine 307 and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT Polarization is a fundamental property of light that describes the direction in which the electric field of light oscillates. Polarization, as an intrinsic property of light, provides an extra dimension […] |
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Achieving energy sustainability requires efforts from not only sourcing clean energy, but also storing and dispatching energy whenever and wherever needed, as well as being energy-efficient whenever possible. Two-dimensional (2D) materials hold great promises as mechanical reinforcement in high strength-to-weight ratio structural materials and as next-generation energy-efficient electronic materials, both of which contribute to less […]
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Over the last three decades, nanocrystalline alloys (polycrystals with grain sizes of less than 100 nm) have been shown to exhibit superior material properties, such as enhanced specific strength, hardness, wear resistance, radiation resistance, and magnetic properties. However, such structures are inherently thermodynamically unstable; a nanocrystalline configuration comes with a large volume fraction of high-energy […]
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My research focuses on the security, privacy, and transparency of technologies in societal and legal context. My talk will focus on three of my recent works in this space, relating to (1) preventing exploitation of stolen email data, (2) enhancing accountability in electronic surveillance, and (3) legal risks faced by security researchers. |
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This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT Deep learning has resulted in remarkable breakthroughs in fields such as speech recognition, computer vision, natural language processing, and protein structure prediction. Robotics has proved to be much […]
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Join the discussion on challenges and strategies in the recruitment of URM PhD students and supporting them in graduate study. Invited panelists will provide their perspectives at the graduate program, research center, and laboratory levels. Join in person or via Zoom. Please contact annjeong@seas.upenn.edu at least one day prior for Zoom link. |
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Spring 2023 Hybrid-Seminar Series Mondays 1.00-2.00 pm (EST) Towne 225 / Raisler Lounge “For Zoom link, please contact <manu@seas.upenn.edu>”
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Please save the date to join us for this annual distinguished lecture. The Joseph Bordogna Forum will foster conversation and debate regarding important issues at the nexus of technology and society. It will feature lectures and panel discussions on a wide range of contemporary issues that are central to engineering including diversity and inclusion, the […] |
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While lithium (Li) ion battery technology has had major successes, at the current rate of progress, it is unlikely to meet the mid-century global demands related to full de-carbonization and interruption of fossil fuel usage for transportation and energy generation. The replacement of currently used anodes by Li metal is one of the most promising […]
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Topological materials are solid-state compounds that have atypical charge carriers, often acting analogously to particles in high-energy physics. They are significant for both fundamental and applied science, with potential uses in spintronics, catalysis, and quantum information science. But despite the great promise of this field, the majority of known topological materials conform to the same […]
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Attention BE Master's Students! We want your thoughts on the job search! Sign up for this upcoming focus group to give us your opinion on industries of interest, employers & recruiting events. Register now: http://tinyurl.com/bdzz8cna. Contact Lauren Kemp with any questions: laurem@seas.upenn.edu |
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ABSTRACT: Electronic health records (EHRs) offer great promises in advancing clinical research and transforming learning health systems. However, complex, temporal EHRs are fraught with biases and present daunting analytical challenges that, if not addressed, can exacerbate health inequities. EHRs data, recorded at irregular time intervals with varying frequencies, are multi-modal and multi-scale including structured data […]
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This is a hybrid event with in-person attendance in Levine 307 and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT While it is tempting to view robotics as a nail that can be solved with the deep learning hammer, we have seen that deep-learning based perception and action pipelines for […]
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Abstract: Blood vessels constitute one of the most complex and most essential biological systems, sometimes referred to as a separate organ. Endothelial cells, lining blood vessels are also one of the most 'plastic' cell types, capable of a wide range of responses to external stimuli, conditioned on their internal states and micro-environment. Strikingly, many of […] |
6 events,
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Efficient learning for stochastic control and estimation remains a topic of high interest in a variety of disciplines and there are well-known advantages and disadvantages to both model-free and model-based learning. On one hand, it is becoming increasingly more feasible to rely entirely on model-free/data-driven methods for controlling complex stochastic systems, but a well-known issue […]
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The development of stronger and tougher materials serving under extreme conditions is a long-term goal of materials research that has been made even more urgent recently by our quests for space exploration and energy sustainability. Recently, the advent of alloys with increased complexity, e.g., multi-principal element alloys (MPEAs), additively manufactured (AM) alloys, and alloys with […]
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Rapidly growing renewable generations and peak loads pose a serious threat to the security and reliability of modern power and energy systems. A critical question is "how to accommodate a high penetration of renewable generation and deep electrification?". This talk focuses on two key challenges, i.e., unknown information and the scalability issue of coordinating large-scale […] |
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This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. This week's presenter will be in-person as well. ABSTRACT My long-term research goal is enable real robots to manipulate any kind of object such that they can perform many different tasks in a wide variety of application […] Creating thick electrodes with low porosity can dramatically increase the available energy in a single cell and decrease the number of electrode stacks needed in a full battery, which results in higher energy, lower cost, and easier to manufacture batteries. However, existing electrode architectures cannot simultaneously achieve thick electrodes with high active material volume fractions […] |
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