photostriction

photostriction

[‚fōd·ə′strik·shən]
(physics)
The changes in the dimensions of piezoelectric materials that also exhibit one of the photoelectric effects when they are illuminated by light.
References in periodicals archive ?
The underlying mechanism of photostriction remains unclear, adds Uchino, though he believes it arises from "some combination of photovoltaic and piezoelectric effects.