But until now, the current could only be turned on or off. Researchers at Bell Labs have added the equivalent of a volume knob. Flexible film turns heat to power Tiny machines need sources of power. Many of the environments they're intended to work in, like vehicles and the human body, generate heat. A flexible film aims to let these machines fuel up on this thermal energy.
Natural force drives molecular ratchet Charged particles either attract or repel each other.
Make a track out of alternating charges and you have the beginnings of a molecular-scale railroad. All rights reserved.