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Tribology and ultrasonic hysteresis at local scales

机译:局部尺度的摩擦学和超声滞后

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Local adhesion hysteresis (AH) is difficult to measure using an AFM due to complications introduced by compliant cantilevers as they snap-in and snap-out to/from a sample surface. But, at ultrasonic frequencies well above the cantilever mechanical resonance, the effective stiffness can increase enormously. Therefore, ultrasonically vibrating a sample in contact with an AFM tip can probe the hysteretic cycle of tip-sample in- and out-interactions [Jpn. J. Appl. Phys. 32 (1993) 22; Acoust. Imag. (1996)] allowing AH to be investigated by measuring ultrasonic hysteresis (UH). For the first time UH is compared here with lateral force microscopy (LFM) data. The same kind of experiments is also implemented for a nanoindenter based setup. Thus, the micro- (nanoindenter) and nano- (AFM) scales are investigated. UH and friction of both length scales are found to be linearly related for surfaces differing widely in elasticity and adhesion. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 19]
机译:由于顺应性悬臂卡扣到样品表面或从样品表面拉出,因此使用AFM难以测量局部粘附滞后(AH)。但是,在超声频率远高于悬臂机械共振的情况下,有效刚度会大大提高。因此,超声振动与AFM针尖接触的样品可以探测针尖-样品内相互作用和外相互作用的滞后循环[Jpn。Chem。,2006,5,3]。 J.应用物理32(1993)22; co想像(1996)]允许通过测量超声磁滞(UH)来研究AH。这里首次将UH与侧向力显微镜(LFM)数据进行比较。对于基于纳米压头的设置,也实施了相同类型的实验。因此,研究了微米(纳米压痕)和纳米(AFM)刻度。对于弹性和粘附力差异很大的表面,两个长度刻度的UH和摩擦均呈线性关系。 (C)2003 Elsevier Science B.V.保留所有权利。 [参考:19]

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