Fabrication and Manipulation of Ciliary Microrobots with Non-reciprocal Magnetic Actuation

• DOI: 10.1038/srep30713
• Publication Date: 2016-07-29T09:47:25Z
• Authors: Sangwon Kim; Seungmin Lee; Jeonghun Lee; Bradley J. Nelson; Li Zhang; Hongsoo Choi
• Keywords: FOS: Mechanical engineering; ARTIFICIAL BACTERIAL FLAGELLA; NANOSWIMMERS; 530; Article; Electrical and electronic engineering; Mechanical engineering; FORCE; 620; LIFE; PROPULSION; MOTORS; Electrical and electronic engineering; Mechanical engineering; HELICAL MICROMACHINES; MICROSWIMMERS

Abstract Magnetically actuated ciliary microrobots were designed, fabricated and manipulated to mimic cilia-based microorganisms such as paramecia. Full three-dimensional (3D) microrobot structures using 3D laser lithography form a polymer base structure. A nickel/titanium bilayer was sputtered onto the cilia part of ensure magnetic actuation biocompatibility. The by an electromagnetic coil system, which generated stepping field actuate with non-reciprocal motion. beating motion produced net propulsive force, resulting in movement microrobot. forces on individual calculated various input parameters including strength, cilium length, applied angle, actual etc. translational velocity measured experimentally. position orientation precisely controlled targeted particle transportation demonstrated