A cantilever that consists of two active layers: piezoelectric and metal.
bioherm
bioherm
noun
(geology) A mass of rock constructed from the remains of marine organisms such as coral or algae
(geology) A massive, unlayered, mound-shape body in discordant relationship to the surrounding layered facies which drape over it; thus either a reef or a bank (after Asquith, 1979, p.73).