ABSTRACT
Richard Feynman anticipated the idea of micromachines in his 1959 talk, “There’s plenty of room at the bottom” (Feynman 1960). Feynman suggested as a possible micromachine a micromechanical “surgeon,” which could be swallowed and operate inside a faulty blood vessel. At the end of his talk
9.1 Introduction .......................................................................................................................... 277 9.1.1 Micromachines ......................................................................................................... 277 9.1.2 Drive Mechanisms for Micromachines .................................................................... 278 9.1.3 Phase Singular Fields and Orbital Angular Momentum .......................................... 278 9.1.4 Symmetry and Optically Driven Micromachines .................................................... 279 9.1.5 Experimental Setup .................................................................................................. 281
9.2 Microrotors Driven by Spin Angular Momentum ................................................................ 283 9.2.1 Design and Microfabrication of Form Birefringent “Holey” Microspheres............. 283 9.2.2 Rotation in Optical Tweezers ....................................................................................285 9.2.3 Functionalization with Biomolecules .......................................................................288
