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September

    • To build their freestanding, solid-state supercapacitor, Drexel researchers electrospin a mat of carbon nanofibers and coat them with an ion-rich gel. This eliminates the need for a flammable electrolyte solution, which has been the cause of dangerous leaks and meltdowns in the batteries of mobile devices.

      Drexel Researchers Make a Carbon Nanofiber Supercapacitor (Without The Flammable Ingredients)

      September 26, 2017

      A group of Drexel University researchers have created a fabric-like material electrode that could help make energy storage devices — batteries and supercapacitors — faster and less susceptible to leaks or disastrous meltdowns. Their design for a new supercapacitor, which looks something like a furry sponge infused with gelatin, offers a unique alternative to the flammable electrolyte solution that is a common component in these devices.

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    • Researchers in professor Mitra Taheri's Dynamic Characterization Group are combining a new direct detection camera with electron-loss spectroscopy to get a detailed look at composition and structure of materials.

      New Microscope Technology Gives Drexel Researchers a Detailed Look at Structure and Composition of Materials

      September 21, 2017

      At their core, electron microscopes work a lot like a movie projectors. A high-powered beam passes through a material and it projects something — usually something we really want to see — onto a screen on the other side. With most electron microscopes, however, capturing data is like trying to project a movie onto a dirty screen that is too small to see the whole projection. But a new camera technology, developed by researchers at Drexel University, is enabling the microscopes to present a clearer, more complete and detailed look at their featured presentation.

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    • Photo of crowded train car.

      Just Squeeze In — Drexel Researchers Discover When Spaces Are Tight, Nature Loosens Its Laws

      September 18, 2017

      It turns out that when they’re in a hurry and space is limited, ions, like people, will find a way to cram in — even if that means defying nature’s norms. Recently published research from an international team of scientists, including Drexel University’s Yury Gogotsi, PhD, shows that the charged particles will actually forgo their “opposites attract” behavior, called Coulombic ordering, when confined in the tiny pores of a nanomaterial. This discovery could be a pivotal development for energy storage, water treatment and alternative energy production technologies, which all involve ions packing into nanoporous materials.

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    • Snow melting on road.

      Wax On, Melt Off

      September 15, 2017

      In a paper recently published in journal “Cement and Concrete Composites” researchers, led by Yaghoob Farnam, PhD, an assistant professor in Drexel’s College of Engineering, explain how substances like paraffin oil — known as “phase change materials” in chemistry — can be used in concrete to store energy and release it as heat when a road needs a melt-off.

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    • Aerial view of flooded town

      Media Watch: Could Design Decisions Plaguing Houston Also Cause Persistent Flooding in Parts of Philly?

      September 12, 2017

      Could Philadelphia one day experience catastrophic flooding like Houston’s? Franco Montalto, PhD, a professor in Drexel’s College of Engineering who studies how cities can be better designed to withstand environmental challenges, including those associated with climate change and flooding — suggests that while Philadelphia’s development patterns and climate is very different from that of Houston’s, it has been luck, more than planning, that has kept the city from experiencing a compound flood – one that involves coastal surges and intense precipitation – in recent years.

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