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All News tagged "materials science"

MXene spray antenna

Drexel's Spray-On Antennas Could Be the Tech Connector of the Future

A group of researchers from the College of Engineering recently reported a method for spraying invisibly thin antennas, made from a type of two-dimensional, metallic material called MXene, that perform as well as those being used in mobile devices, wireless routers and portable transducers. 


ferroelectric domain wall material

Once a Performance Barrier, This Material Quirk Could Strengthen Our Telecommunication Connections

Researchers who study and manipulate the behavior of materials at the atomic level have discovered a way to make a thin material that enhances the flow of microwave energy. The advance, which could improve telecommunications, sheds new light on structural traits, generally viewed as static and a hindrance, that, when made to be dynamic, are actually key to the material’s special ability.
crystalsome

Drexel's Polymer Pill Proves it Can Deliver

Selecting the right packaging to get precious cargo from point A to point B can be a daunting task at the post office. For some time, scientists have wrestled with a similar set of questions when packaging medicine for delivery in the bloodstream: How much packing will keep it safe? Is it the right packing material? Is it too big? Is it too heavy? Researchers from Drexel University have developed a new type of container that seems to be the perfect fit for making the delivery.
MXene soft assembly

A Soft Solution to the Hard Problem of Energy Storage

Recently published research from Drexel University and the University of Pennsylvania, shows a new technique for manipulating two-dimensional materials that allows them to be shaped into films of a practically usable thickness, while maintaining the properties that make them exceptional candidates for use in supercapacitor electrodes. 

 
  Back row, left to right: Dean Cohen, Amy Gottsegen, Kelly Weissberger (Associate Director, CSD), Ashleigh Jugan, Nicholas Barber, Vincent O’Leary, Provost Blake, Riki McDaniel, Ian Nichols, Caitlin Walczyk, Sam Buczek, Meredith Wooten (Director, CSD), Dean Van Bockstaele, Martha Meiers (Program Coordinator, CSD). Front row, left to right: Caitlin Cooper, Ana Monastero, Jacob Baron, Dylan O’Donoghue, Marina D’souza, Gabrielle Salib, Emily Coyle (Fellowships Advisor, CSD). Photo credit Jordan Stein.

Meet the Drexel Dragons up for the Biggest Awards This Year

Drexel University’s Center for Scholar Development recently hosted an event to recognize the hard work and initiative taken by those students who applied for major fellowships this year.
smoke detector

A High(er)-Definition Nose — Drexel's MXene Material Could Improve Sensors That Sniff

Sensors that sniff out chemicals in the air to warn us about everything from fires to carbon monoxide to drunk drivers to explosive devices hidden in luggage have improved so much that they can even detect diseases on a person’s breath. Researchers from Drexel University and the Korea Advanced Institute of Science and Technology have made a discovery that could make our best “chemical noses” even more sensitive.
hydrogen fuel

'Chemical Net' Could Be Key to Capturing Pure Hydrogen

Hydrogen is one of the most abundant elements on Earth and an exceptionally clean fuel source. While it is making its way into the fuel cells of electric cars, busses and heavy equipment, its widespread use is hampered by the expensive gas-separation process required to produce pure hydrogen. But that process could soon become more efficient and cost-effective thanks to a discovery by an international team of researchers, led in the U.S. by Drexel University. The group has uncovered exceptionally efficient gas separation properties in a nanomaterial called MXene that could be incorporated into the membranes used to purify hydrogen.
direct detection electron-loss spectroscopy

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

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.
packed subway

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

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. 

lithium dendrites

Recipe for Safer Batteries — Just Add Diamonds

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 these hazardous malfunctions researchers at Drexel University have developed a recipe that can turn electrolyte solution — a key component of most batteries — into a safeguard against the chemical process that leads to battery-related disasters. 
battery charging

Entering the Fast Lane — MXene Electrodes Push Charging Rate Limits in Energy Storage

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 in the journal Nature Energy
Katie Van Aken

A Drexel University PhD Reflects on Five Years in the Lab and on the Board

Katie Van Aken, vice president of the Graduate Student Association, turned her dissertation defense into a celebration earlier this month, and she’s currently preparing to speak at the biggest one of all for students — commencement.