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|John Vohs Receives Heilmeier Research Award|
|John M. Vohs, Carl V. S. Patterson Professor in the Department of Chemical and Biomolecular Engineering, has been named the recipient of the 2013-14 George H. Heilmeier Faculty Award for Excellence in Research for "major impact in the fields of surface science and catalysis, especially the surface science of metal oxides." The Heilmeier Award honors a Penn Engineering faculty member whose work is scientifically meritorious and has high technological impact and visibility.|
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|Penn Engineers Grow Liquid Crystal 'Flowers' That Can Be Used as Lenses|
A team of material scientists, chemical engineers and physicists has made another advance in their effort to use liquid crystals as a medium for assembling structures. In earlier studies, the team produced patterns of "defects," useful disruptions in the repeating patterns found in liquid crystals. The new study adds a more complex pattern out of an even simpler template: a three-dimensional array in the shape of a flower.
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|Penn Engineers Show Nuclear Stiffness Keeps Stem Cells and Cancer Cells in Place|
Adult stem cells and cancer cells have many things in common, including an ability to migrate through tiny gaps in tissue. Now, Penn Engineers have shown that cell migration through micron-size pores is regulated by lamin-A, a nuclear protein that is very similar to the fibrous ones that make up hair. They have also shown that a cellís ability to survive the mechanical stress of migration depends on proteins called "heat shock factors."
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|The Motion of the Medium Matters for Self-assembling Particles|
By attaching short sequences of single-stranded DNA to nanoscale building blocks, researchers can design structures that can effectively build themselves. Now, a Penn Engineering team has made a discovery with implications for all such self-assembled structures: fluid dynamics play a crucial role in the kind and quality of the structures that can be made.