This paper deals with electrostatically actuated Carbon NanoTubes (CNT) cantilevers for bio-sensing applications. There are three kinds of forces acting on the CNT cantilever: electrostatic, elastostatic, and van der Waals. The van der Waals forces are significant for values of 50 nm or lower of the gap between the CNT and the ground plate. As both forces electrostatic and van der Waals are nonlinear, and the CNT electrostatic actuation is given by AC voltage, the CNT dynamics is nonlinear parametric. The method of multiple scales is used to investigate the system under soft excitations and/or weakly nonlinearities. The frequency-amplitude and frequency-phase behavior are found in the case of primary resonance. The CNT bio-sensor is to be used for mass detection applications.
展开▼
机译：本文涉及用于生物传感应用的静电致动碳纳米管（CNT）悬臂。 CNT悬臂上有三种力量：静电，弹性型和van der Waals。 VAN DAR WAALS力对于CNT和地板之间的间隙的50nm或更低的值具有重要意义。由于静电和范德瓦尔斯都是非线性的，并且CNT静电致动由AC电压给出，CNT动力学是非线性参数。多种尺度的方法用于研究软激发和/或弱非线性的系统。在初级谐振的情况下发现频率幅度和频率相行为。 CNT生物传感器用于质量检测应用。
展开▼
