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12 Current news of Drexel University

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Water-free way to make MXenes

Discovery could mean new uses for the promising nanomaterials

18-Mar-2020

Ten years after producing the first sample of the now widely studied family of nanomaterials, called MXenes, Drexel University researchers have discovered a different way to make the atom-thin material that presents a number of new opportunities for using it. The new discovery removes water from ...

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Taking an X-ray of an atomic bond

19-Dec-2019

Understanding the behavior of materials at their interfaces - where they connect to and interact with other materials - is central to engineering a variety of devices used to process, store and transfer information. Devices such as transistors, magnetic memory and lasers could all improve as ...

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A stabilizing influence enables lithium-sulfur battery evolution

Stable cathode and five-second fabrication technique could boost adoption of Li-S batteries

19-Oct-2018

In late July of 2008 a British solar plane set an unofficial flight-endurance record by remaining aloft for more than three days straight. Lithium-sulfur batteries emerged as one of the great technological advances that enabled the flight -powering the plane overnight with efficiency unmatched by ...

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A New Way to Atomically Thin Materials

Silicon secedes: titanium carbide flakes obtained by selective etching of titanium silicon carbide

06-Apr-2018

Metallic conductivity and hydrophilicity of MXenes have established them as electrodes in rechargeable batteries and supercapacitors, as well as other applications, including photothermal cancer therapy, electromagnetic shielding, water purification and gas sensing. In the journal Angewandte ...

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Safer batteries by adding diamonds

29-Aug-2017

While lithium-ion batteries, widely used in mobile devices from cell phones to laptops, have one of the longest lifespans of commercial batteries today, they also have been behind a number of recent meltdowns and fires due to short-circuiting in mobile devices. In hopes of preventing more of ...

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Conductive electrodes are key to fast-charging batteries

11-Jul-2017

Can you imagine fully charging your cell phone in just a few seconds? Researchers in Drexel University's College of Engineering can, and they took a big step toward making it a reality with their recent work unveiling of a new battery electrode design. The team, led by Yury Gogotsi, PhD , ...

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A recipe for concrete that can withstand road salt deterioration

22-May-2017

Road salt, used in copious helpings each winter to protect them from ice and preserve safe driving conditions, is slowly degrading the concrete they're made of. Engineers have known for some time that calcium chloride salt, commonly used as deicer, reacts with the calcium hydroxide in concrete to ...

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Tiny algae ideal for sniffing out nutrient pollution in water

28-Jun-2016

The key to effectively measuring damagingly high levels of nutrients in freshwater streams lies in the microscopic organisms living in them, according to a group of Drexel University scientists. A team largely made up of researchers from the Academy of Natural Sciences of Drexel University ...

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Making some of the world's most durable materials corrosion-resistant

27-May-2016

Borides are among the hardest and most heat-resistant substances on the planet, but their Achilles' Heel, like so many materials', is that they oxidize at high temperatures. Oxidation is the chemical reaction commonly known as corrosion or rusting -- it can signal the end for a material's ...

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A molecular light switch?...Just add water

17-Dec-2015

A bit of stray moisture during an experiment tipped off scientists about the strange behavior of a complex oxide material they were studying--shedding light on its potential for improving chemical sensors, computing and information storage. In the presence of a water molecule on its surface, the ...

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