Contact electrification and the triboelectric effect are complex processes for mechanical-to-electrical energy conversion, particularly highly deformable polymers. While generating relatively low power density, contact can occur at contact-separation interface between nearly any two polymer surfaces. This ubiquitousness of surfaces enables to be an important phenomenon understand conversion har...

The most physiological type of cell cycle arrest - namely, contact inhibition in dense culture - is the least densely studied. Despite cell cycle arrest, confluent cells do not become senescent. We recently described that mTOR (target of rapamycin) is inactive in contact-inhibited cells. Therefore, conversion from reversible arrest to senescence (geroconversion) is suppressed. I this Perspectiv...