Electrons play many roles in solid materials. When they are weakly bound and able to travel—i.e., mobile—they can enable ...

What color is moonlight typically, and what other colors can moonlight look like from our perspective on Earth?

Unmanned aerial vehicles (UAVs) have been widely applied for their high mobility and low cost, and the visible light communication (VLC) aided UAV can combine the flexibility of UAV and the high ...