ABSTRACT
When considering applications at small scale, adhesion cannot be ignored. For example, capillary adhesion is important in micromanufacturing [1] or in assembly of small components [2]. Contrary to marco-world ruled by gravity, small scale applications are governed by surface forces. Indeed, when size diminishes and the objects are scaled down, surface forces become more important and the major opposing force to picking up and releasing micro-and nanocomponents becomes the force of adhesion [3]. The force needed to separate two objects is also known as pull-off force. Adhesion can also prevent structures like RF-MEMS or any high aspect ratio structures from normal functioning [4].
