From a constructed perspective, there are two important types of atomic machines: atomic switches (or shuttles) and atomic motors. The above aberration amid the two systems is that a about-face influences a arrangement as a action of state, admitting a motor influences a arrangement as action of trajectory. A about-face (or shuttle) may arise to abide translational motion, but abiding a about-face to its aboriginal position undoes any automated aftereffect and liberates activity to the system. Furthermore, switches cannot use actinic activity to repetitively and progressively drive a arrangement abroad from calm area a motor can.
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