Fabrication and electrorotation of novel epoxy based micromotor working in uniform DC electric field Rita A. Bauer 1 , Lóránd Kelemen 2 , Masami Nakano 3 , Atsushi Totsuka 3 and Miklós Zrínyi 1,4 1 Department of Biophysics and Radiation Biology, Semmelweis University H-1089 Budapest, Nagyvarad ter 4., Hungary 2 Biological Research Centre, Hungarian Academy of Sciences H-6726 Szeged, Temesvári krt. 62., Hungary 3 Intelligent Fluid Control Systems Laboratory, Institute of Fluid Science, Tohoku University 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan 4 MTA-SE Molecular Biophysics Research Group, Department of Biophysics and Radiation Biology, Semmelweis University, H-1089 Budapest, Nagyvarad ter 4., Hungary E-mail of corresponding author: mikloszrinyi@gmail.com Abstract. We have presented the first direct observation of electric field induced rotation of epoxy based polymer rotors. Polymer disks, hollow cylinders and gears were prepared in few micrometer dimensions as rotors. Electrorotation of these sub-millimeter sized tools was studied under uniform DC electric field. The effects of shape, size and thickness were investigated. The novel epoxy based micro devices show intensive spinning in uniform DC electric field. The rotational speed of micron-sized polymer rotors can be conveniently tuned in wide range (between 300 – 3000 rpm) by the electric field intensity, opening new perspectives for their use in several MEMS applications. Page 1 of 9 CONFIDENTIAL - AUTHOR SUBMITTED MANUSCRIPT SMS-101882 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60