Engineering & Applied Science

Displaying 51 - 60 of 453
Penn Engineers Overcome a Hurdle in Growing a Revolutionary Optical Metamaterial
February 21, 2017
When John Crocker, a professor of chemical and biomolecular engineering in the University of Pennsylvania’s School of Engineering and Applied Science was a graduate student, his advisor gathered together everyone in his lab to “throw down the gauntlet” on a new challenge in the field.
Penn/Wistar Study Finds ‘Sweet Spot’ Where Tissue Stiffness Drives Cancer’s Spread
February 20, 2017
In order for cancer to spread, malignant cells must break away from a tumor and through the tough netting of extracellular matrix, or ECM, that surrounds it. To fit through the holes in this net, those cancerous cells must elongate into a torpedo-like shape. Researchers from the University of Pennsylvania and The Wistar Institute have now found that physical forces exerted between these cells from the ECM are enough to drive this shape change. Those forces converge on an optimal stiffness that allows cancer cells to spread.
Penn Researchers Work to Expand Access to Health Care Using Nanotechnology
February 17, 2017
Treatment for HIV has come a long way since the illness emerged as a serious global health problem in the 1980s. With constant monitoring and the right cocktail of medication, patients with HIV can now live long, healthy lives. But many individuals who are diagnosed with HIV don’t have access to the proper diagnostics and treatment.
Penn Researchers Are Among the First to Grow a Versatile Two-dimensional Material
February 7, 2017
University of Pennsylvania researchers are now among the first to produce a single, three-atom-thick layer of a unique two-dimensional material called tungsten ditelluride. Their findings have been published in 2-D Materials. Unlike other two-dimensional materials, scientists believe tungsten ditelluride has what are called topological electronic states. This means that it can have many different properties not just one. When one thinks about two-dimensional materials, graphene is probably the first that comes to mind.
Penn Engineers Demonstrate a ‘Hybrid Nanomanufacturing’ System
January 31, 2017
Nanoscale structures have properties that can’t be achieved in any other way, stemming from precise control over the structure’s composition and geometry. Unfortunately, simultaneously achieving high levels of control of both characteristics can be challenging. Bottom-up, self-assembly methods can carefully tailor the chemical makeup a nanoparticle, but are limited in their ability to control the shape or size of nanostructures build from these small components.
Penn Senior Lucy Chai Awarded Churchill Scholarship
January 27, 2017
University of Pennsylvania senior Lucy Chai of Acton, Mass., has received a Churchill Scholarship from the Winston Churchill Foundation.  She is among 15 recipients of the honor, awarded annually to American students to fund a year of master’s study in science, mathematics and engineering at the University of Cambridge’s Churchill College.  
Penn Researchers Shed Light on the Roundworm’s Curious Swimming Behavior
January 3, 2017
The round worm Caenorhabditis elegans, a nematode, is a puzzling creature.
Checking In With 2016 Penn President’s Engagement and Innovation Prize Winners
December 15, 2016
Nearly two years out from the first awarding of the University of Pennsylvania President’s Engagement Prizes, communities in the United States and around the world are beginning to reap the benefits.
Penn Engineers Calculate Interplay Between Cancer Cells and Environment
December 7, 2016
Interactions between an animal cell and its immediate environment, a fibrous network called the extracellular matrix, play a critical role in cell function, including growth and migration. But less understood is the mechanical force that governs those interactions.
Penn Engineers Contribute to New Understanding of Friction on Graphene
November 28, 2016
Graphene, a two-dimensional form of carbon in sheets just one atom in thick, has been the subject of widespread research, in large part because of its unique combination of strength, electrical conductivity and chemical stability. But, despite many years of study, some of graphene’s fundamental properties are still not well understood, including the way it behaves when something slides along its surface.