City University of Hong Kong

Li-ion batteries need complex cooling systems. Yet, the human body, which generates enough heat to boil over 100 cups of tea daily, is literally just chillin’. The secret? Our skin’s ability to sweat. Scientists may have given batteries this ability.

Flying robots do have advantages over their ground-going counterparts, but they're not very energy-efficient. A new bot addresses that tradeoff by using a wing-assisted mechanism to hop instead of walking or flying in the traditional sense.

The Disney-esque hues on bluespotted ribbontail rays come from a unique arrangement of nanostructures, say researchers. The findings, along with those gleaned from studying blue sharks, could help lead to new chemical-free color techniques.

It might look hilarious in motion, but this remarkable aerial drone extends its battery life from a few minutes up to a full hour by bouncing around on a springy pogo tail. That incredible efficiency makes it attractive for a wide range of missions.

Scientists have demonstrated a new ultra-white ceramic material that drastically cools buildings, with record-high sunlight and heat reflectivity. The beetle-inspired material gets its ability from its nanostructure and should be easy to mass produce.

When fighting cancer, chemotherapy is still a bit of a blunt instrument. By combining it with soundwaves, however, researchers have found a way to turn it into more of a scalpel than a club, sparing damage to nearby tissue and the body as a whole.

A novel platinum-enhanced, light-activated compound kills cancer cells in a unique way without requiring oxygen, overcoming a limitation with existing light-based cancer therapies. It paves the way for the next generation of anti-cancer drugs.

While we've seen multiple attempts to produce real-world odors in VR environments, many have involved cumbersome wearable devices. Chinese scientists have developed a much more streamlined system, which is applied to the skin below the user's nose.

Last year we heard about an "electronic skin" developed at City University of Hong Kong, which delivers tactile sensations to wearers. The university has now gone one better, with an e-skin that both senses and reproduces users' touches.

While technology is making strides in absorbing our eyes and ears in virtual worlds, it’s harder to engage senses like touch. Engineers have now developed WeTac, a thin, wearable electronic "skin" that provides tactile feedback to users in VR and AR.

City University of Hong Kong researchers have accidentally discovered a first-of-its-kind high-entropy alloy that retains its stiffness, and actually becomes springier, instead of softening at high temperature. No other known metals behave this way.

As if the ray fishes weren't unusual enough already, it turns out that their sperm is also unique. Scientists have now created a robot inspired by those sperm, which may someday lead to smaller descendants that swim within the human body.