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Drexel University

One of the prototype ulcer-healing patches

Venous ulcers are nasty things, often found on the lower extremities of elderly or inactive people. They occur when high blood pressure causes the skin adjacent to the affected veins to break down, leaving open wounds that take months or even years to heal. Standard treatments include compression bandages, infection control and standard wound dressings, although these approaches don’t work in all cases. Now, however, scientists are getting good results using band-aid-like patches that emit ultrasound into the ulcers.  Read More

A researcher manipulates DRC-HUBO's arms to demonstrate its compliant joints

The DARPA Robotics Challenge (DRC) has scheduled its first physical trial for late December, leaving competing teams less than six months to finish building and programming their robots. In case you're just tuning in, the DRC is a gauntlet of daunting tasks designed to test robots that may someday stand in for people as first responders. DARPA has just revealed the completed ATLAS humanoid, but there's still a half dozen others that remain somewhat mysterious. Now, Team DRC-HUBO is spilling the beans on its own humanoid robot.  Read More

Robotic arms and hands on an adjustable gantry designed to simulate a UAV’s movements

UAVs have proven very successful as surveillance, intelligence-gathering and mapping craft, but their ability to interact with the ground has been largely confined to launching missiles. Now, Drexel University in Philadelphia, Pennsylvania is planning to endow them with arms and hands to allow them to work on such tasks as repairing infrastructure and disaster recovery while hovering near the ground.  Read More

Drexel University research combining the best features of batteries and supercapacitors co...

Researchers at Drexel University are developing an electrochemical flow capacitor (EFC) that combines the storage capabilities of batteries with the much longer cycle life and power output of supercapacitors. The team's goal is to improve the stability of the energy grid and ease the integration of renewable energy sources.  Read More

Dr. Hicks' mirror (top) as compared to a regular flat driver's side mirror

While there are already various anti-blind-spot automobile mirrors on the market, these all tend to incorporate a very curved surface that drastically distorts the appearance of objects seen in them – given that drivers use their mirrors to avoid getting in accidents, it’s kind of important that those mirrors show the surrounding traffic as it really is. That’s why Dr. Andrew Hicks, a mathematics professor at Philadelphia’s Drexel University, has created a side mirror that eliminates the blind spot, while causing almost no distortion.  Read More

Three-dimensional printing is being used to create precise robotic models of dinosaurs (Im...

Although it may seem that we know a great deal about dinosaurs, a lot of the knowledge is actually based on assumptions rather than hard facts. Often, scientists have to resort to guesswork. Some hypotheses can only be tested by manipulating a skeleton model, but that's quite a challenge if the bones you want to study belonged to an enormous animal. Also, size is not the only issue. Dinosaur fossils tend to be fragile, unique and valuable. That's why the researchers at Drexel University, who want to build precise robotic models of dinosaurs, decided to use 3D printing technology.  Read More

A plasma torch eliminates bacteria from raw chicken

Judging by the number of folks who fall prey to food-borne illness each year, food safety is serious business, especially when you consider that pathogens such as Campylobacter and Salmonella contaminate over 70 percent of the raw chicken meat tested. Now, recent research from a food safety team at Pennsylvania's Drexel University offers proof-of-concept for what may one day be a common approach to preventing food-borne illness from raw poultry and meat products - the use of high-energy, low temperature plasma to eliminate unwanted bacteria while leaving the food basically unchanged.  Read More

Harsha Agashe, a Ph.D. student in Contreras-Vidal's lab at UMD wears the Brain Cap, a non-...

Researchers at the University of Maryland (UMD) continue to advance the development of their “brain cap” technology that allows users to turn their thoughts into motion. The team has already had success in using EEG brain signals captured from the cap’s 64 electrodes attached to users’ scalps to reconstruct 3D hand movements and to control a computer cursor with their thoughts, and now the team has successfully reconstructed the complex 3D-movements of the ankle, knee and hip joints during treadmill walking. The aim is to provide a non-invasive technology that can return motor function to victims of paralysis, injury or stroke.  Read More

Drexel University's Dr. Yury Gogotsi (right) and colleagues have developed an ultrahigh-po...

Supercapacitors, also called electric double layer capacitors (EDLCs) or ultracapacitors, are electrochemical capacitors that have an unusually high energy density when compared to common capacitors. They bridge the gap between batteries, which offer high energy densities but are slow, and “conventional” electrolytic capacitors, which are fast but have low energy densities. An international team of researchers are reporting the development of a mirco-supercapacitor with remarkable properties that has the potential to power mobile electronics, wireless sensor networks, biomedical implants, RFID tags and embedded microsensors, among other devices.  Read More

The non-reversing mirror.
 Photo Credit: Andrew Hicks

You could be forgiven for thinking Andrew Hicks is obsessed with his own reflection, but it’s the mirror itself which attracts the interest of this mathematician from Drexel University, Philadelphia. Hicks has used computer algorithms to generate a mirror that produces a mirror image that isn’t a mirror image, making it possible to read reflected text normally.  Read More

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