Hae won Park
Won Park Research Scientist, Personal Robotics Group, MIT Media Lab
Lithographic nanofabrication is often limited to successive fabrication of two-dimensional (2D) layers. We present a strategy for the direct assembly of 3D nanomaterials consisting of metals, semiconductors, and biomolecules arranged in virtually any 3D geometry. We used hydrogels as scaffolds for volumetric deposition of materials at defined points in space. We then optically patterned these scaffolds in three dimensions, attached one or more functional materials, and then shrank and dehydrated them in a controlled way to achieve nanoscale feature sizes in a solid substrate. We demonstrate that our process, Implosion Fabrication (ImpFab), can directly write highly conductive, 3D silver nanostructures within an acrylic scaffold via volumetric silver deposition. Using ImpFab, we achieve resolutions in the tens of nanometers and complex, non–self-supporting 3D geometries of interest for optical metamaterials.
Decarbonizing hard-to-abate sectors is critical to achieve climate change goals given the unique and often fossil fuel-based manufacturing processes. For developed and emerging economies, evaluating power and heavy industry sectors are pertinent given the immense growth expected in the upcoming decades. This presentation will focus on cost and emission models that have been developed and evaluated using the Sesame platform. Specifically, case studies for Hydrogen, Iron and Steel, and Power will be presented demonstrating the impact of technology options, supply chain choices and regional differences. In addition to the plant-level analysis, a system view will be taken to estimate emissions and energy consumption for the entire fleet. By comparing the various technology routes on a cost and emission basis, potential decarbonization strategies, marginal abatement cost, and sensitivities to fuel and other operational costs will be analyzed. The sectoral analysis indicates the immense increase in energy consumption and corresponding infrastructure support for industrial decarbonization. A combination of resource efficiency and technology improvements will be important for reducing emissions from a business-as-usual operation. Overall, the analysis indicates the role of system analysis in evaluating plant-level and system level changes in legacy sectors that are expanding and will be transitioning from traditional production methods. This study is timely as the global community sets climate goals and must consider hard-to-abate sectors, during the energy transition. Using system analysis provides insight to future plant-level and sectoral-level emission and cost challenges.
Ronald Spangler Program Director, MIT Corporate Relations Emre Gençer Research Scientist, MIT Energy Initiative Jacquelyn Pless Fred Kayne (1960) Career Development Professor of Entrepreneurship Assistant Professor, Technological Innovation, Entrepreneurship, and Strategic Management, MIT Sloan School of Management
There are three major complexities facing those who manage last-mile distribution: increasing density in megacities, increasing fragmentation of urban demand, and ever-increasing customer expectations. How can technology and data improve last-mile logistics? What unique challenges do managers face? How can you understand shifting consumer expectations and the evolution of omni-channel retail and delivery in city environments? Join Matthias Winkenbach to explore how companies can reach customers on their own terms, where they live, work, shop, or play, anywhere on the globe.