eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2017-12-15 5 6 307 311 10.12691/ajme-5-6-15 AJME20175615 article Michal Kelemen michal.kelemen@tuke.sk 1 Ivan Virgala 1 Tatiana Kelemenová 2 Ľubica Miková 2 Tomáš Lipták 2 Darina Hroncová 2 Department of Mechatronics, Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic Department of Biomedical Engineering and Measurement, Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic Paper deals with miniature actuators. First part of paper shows the problems related to scalling effect. Next part of paper shows the some results from experimental measurement of piezoelectric actuator. http://pubs.sciepub.com/ajme/5/6/15/ajme-5-6-15.pdf actuator scale effect force displacement