Scientists uncovered 'a connection or coupling between the ferroelectric state and the bending or flexing of the material.'
that can be controlled to act as a nanoscale switch or even a motor, according to a press release published on Monday.
Single-layer or 2D materials have physical, electrical, chemical, and optical properties, which make them useful in applications ranging from consumer electronics to medical and industrial technologies.“2D materials are very thin and very flexible,” Yakobson said. “In single-layer ferroelectrics, this produces an unexpected spontaneous, active bending behavior.”
“The novelty we found in this study is that there is a connection or coupling between the ferroelectric state and the bending or flexing of the material. This work combines the discovery or prediction of a fundamental property of a class of 2D materials with a practical application angle.”“The interesting thing is that the atoms are not identical,” explains Jun-Jie Zhang, a Rice postdoctoral research associate and lead author of the study.
“So instead of remaining flat, in ferroelectric state the material will bend,” Yakobson said. “If you switch the polarization – and you can switch it by applying electrical voltage – you can control the direction in which it will bend. This controllable behavior means you have an actuator.“An actuator is any device that translates a signal – in many cases an electrical signal, but it can be a different kind of signal – into mechanical displacement or, in other words, movement or work.
“When you drive your car, you have a lot of knobs and switches, and it makes everything really easy. You don’t have to crank open your car window anymore, you can just turn on a switch,” said the scientist
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