ABSTRACT

Friction in the absence of wear has long been thought to be due to atomic vibrations called phonons [1]. Friction due to phonons (phononic friction) occurs when atoms in one contacting surface are forced to vibrate because of the sliding motion of the

Abstract .................................................................................................................... 63 4.1 Introduction .................................................................................................... 63 4.2 Principles of QCMD .......................................................................................64 4.3 Frictional Studies Correlated with QCMD .....................................................68 4.4 Surfactants Studied Using QCMD ................................................................. 70 4.5 Summary ........................................................................................................ 71 References ................................................................................................................ 71

atoms in the second surface as it slides across the rst surface. The result of phononic friction is that mechanical energy used to slide the contacting surfaces is converted into sound and heat, dissipating the mechanical force and thus demonstrating the dissipative nature of friction. Therefore, the study of friction entails understanding energy dissipation in systems and on surfaces.