A method of forming a memory device. An elongate actuator is fast with the substrate at a fixed end. The opioid receptor agonist in accordance with the present invention is a promising remedy for drug dependence with little adverse effects which affects expression mechanism of a reward effect so as to inhibit development both psychic dependence and physical dependence. Using the light microscope, a first image is made with the sample in a first direction. The controller further determines vehicle longitudinal and lateral velocity and acceleration as a function of the inertial velocity vectors.