▎ 摘　　要

In this work, we shall demonstrate theoretically that, for certain energy ranges, the electron-transport properties of a bilayer-graphene-flake (BGF)-based system may be strongly modified by small variations of the interlayer spacing. On the other hand, the interlayer spacing variation may be yielded by a vibrational mode in the terahertz region. Thus, a BGF-based terahertz switch is proposed. Potential applications include terahertz pulse generators, digital electronics, and logic devices. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim