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All News tagged "nanotechnology"

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.
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
MXene film

Containing Our 'Electromagnetic Pollution'

If you’ve ever heard your engine rev through your radio while listening to an AM station in your car, or had your television make a buzzing sound when your cell phone is near it, then you’ve experienced electromagnetic interference. This phenomenon, caused by radio waves, can originate from anything that creates, carries or uses an electric current, including television and internet cables, and, of course cell phones and computers. A group of researchers at Drexel University and the Korea Institute of Science & Technology is working on cleaning up this electromagnetic pollution by containing the emissions with a thin coating of a nanomaterial called MXene.

salt

Adding Some Salt to the Recipe For Energy Storage Materials

A team of researchers from Drexel University, Huazhong University of Science and Technology (HUST) and Tsinghua University recently discovered a way to improve the recipe and make the resulting materials bigger and better and soaking up energy — the secret? Just add salt. 

polymer nanobrush

Drexel Materials Scientists Roll Out New Method For Making The Invisible Brushes That Repel Dirt

Drexel researchers have reported on a new method for producing the polymer "nanobrush" coating that is used to prevent ships from corroding, glasses from smudging and artificial joint replacements from locking up. The procedure, which involves growing two-dimensional sheets of polymer nano crystals, is more efficient and controllable than current methods — according to the researchers, it's like making a lawn by putting down sod, rather than planting grass and hoping it grows.  

carbon film supercapacitors

Research Reveals Carbon Films Can Give Microchips Energy Storage Capability

After more than half a decade of speculation, fabrication, modeling and testing, an international team of researchers led by Drexel University’s Yury Gogotsi, PhD, and Patrice Simon, PhD, of Paul Sabatier University in Toulouse, France, have confirmed that their process for making carbon films and micro-supercapacitors will allow microchips and their power sources to become one and the same.

Boron nitride aerogel

Drexel Materials Scientists Aid Australian Institution in Developing Super-Absorbent Material That Can Soak Up Oil Spills

In hopes of limiting the disastrous environmental effects of massive oil spills, Materials scientists from Drexel University and Deakin University, in Australia, have teamed up to manufacture and test a new material, called a boron nitride nanosheet, that can absorb up to 33 times its weight in oils and organic solvents—a trait that could make it an important technology for quickly mitigating these costly accidents. 
President Fry on a field that includes the Chinese and South Korean flags.

Drexel Delegation Off to China, Korea

President John A. Fry and a group of Drexel colleagues will make stops at academic partners in China and take part in a celebration of a new research and co-op partnership in Korea that gives students access to cutting-edge research and nanotechnology.
Drexel researchers have created layered MXene materials by using acid to etch a MAX phase block containing molybdenum.

Drexel Engineers' Recipe For 'Sandwiching' Atomic Layers Expands Possibilities For Making Materials That Store Energy

The scientists whose job it is to test the limits of what nature—specifically chemistry— will allow to exist, just set up shop on some new real estate on the Periodic Table. Using a method they invented for joining disparate elemental layers into a stable material with uniform, predictable properties, Drexel University researchers are testing an array of new combinations that may vastly expand the options available to create faster, smaller, more efficient energy storage, advanced electronics and wear-resistant materials. 
capacitive yarn

Holding Energy By The Threads

A Drexel doctorate student is leading the charge on researching conductive yarns that have the flexibility of a cotton T-shirt but the energy storage that would make the Energizer Bunny proud.