Magnetic

When first responders are tending to accident victims with lacerations, one of their primary goals is to control the bleeding. It may someday be possible for them to do so more effectively than ever, by injecting patients with a magnetic fluid.

A number of groups have already developed so-called "electronic skin," which adds electronic functionality to a user's natural skin. A new magnetic take on the technology, however, does away with the need for integrated electronics and power sources.

Out of all the cool-looking forms that robots can take, a cube seems like a pretty boring choice. But MIT’s cute little cube bots can roll and tumble around, recognize each other, and stack themselves into whatever shape is needed.

With a few exceptions, robots aren't known for having a soft touch – that may be about to change, however, thanks to a new shock-absorbing gripper.

Compasses point north – that’s a pretty constant fact of life. But it hasn’t always been the case, as the north and south poles flip on a semi-regularly basis. Exactly how long this process takes has been up for debate, and now a new study suggests it happens far more slowly than previously thought.

A team from Stanford has shown that graphene arranged in a specific way can generate a magnetic field. That’s surprising enough, but it turns out this particular form of magnetism has previously only been theorized.

The closest thing we have to magnetic liquids are ferrofluids. But now, Berkeley Lab has managed to create the first permanently magnetic liquids, which could open up new avenues for electronics and robotics.

MRI is a great tool for diagnosing disease, but it can be costly and cumbersome. Now, engineers at Boston University have developed a new device, small enough for a patient to wear inside the machine, that could boost the signal and provide higher-resolution images at lower magnetic strengths.

​While shape-memory materials do have some interesting applications, many of them require the application of heat in order to change shape – and that could cause problems, in environments such as the human body. A new material, however, relies instead on a magnetically-responsive liquid.

​While many mountain bikers don't like the idea of having their feet mechanically fastened to clipless pedals, they do see the advantages of such a setup. Austria's magped set out to reach a compromise, with its magnetic platform pedals – I recently got to try a set out.

Magnetoreception, or the ability to sense the Earth’s magnetic field, pops up throughout the animal kingdom, but it’s generally thought to be something humans missed out on. But new research has found changes in human brain wave activity that seems to be in response to a changing magnetic field.

When you imagine robots, you probably aren’t picturing stretchy meshes that can float on water, but that’s exactly what researchers have developed. These soft structures are 3D printed and embedded with magnetic particles that let them stretch and compress to pick up and move small objects.