TY - JOUR
T1 - Thermally Driven Elastic Micromachines
AU - Hosaka, Yuto
AU - Yasuda, Kento
AU - Sou, Isamu
AU - Okamoto, Ryuichi
AU - Komura, Shigeyuki
N1 - Funding Information:
Acknowledgments S.K. and R.O. acknowledge support from a Grant-in-Aid for Scientific Research on Innovative Areas “Fluctuation and Structure” (Grant No. 25103010) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and from a Grant-in-Aid for Scientific Research (C) (Grant No. 15K05250) from the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2017 The Physical Society of Japan.
PY - 2017/11/15
Y1 - 2017/11/15
N2 - We discuss the directional motion of an elastic three-sphere micromachine in which the spheres are in equilibrium with independent heat baths having different temperatures. Even in the absence of prescribed motion of springs, such a micromachine can gain net motion purely because of thermal fluctuations. A relation connecting the average velocity and the temperatures of the spheres is analytically obtained. This velocity can also be expressed in terms of the average heat flows in the steady state. Our model suggests a new mechanism for the locomotion of micromachines in nonequilibrium biological systems.
AB - We discuss the directional motion of an elastic three-sphere micromachine in which the spheres are in equilibrium with independent heat baths having different temperatures. Even in the absence of prescribed motion of springs, such a micromachine can gain net motion purely because of thermal fluctuations. A relation connecting the average velocity and the temperatures of the spheres is analytically obtained. This velocity can also be expressed in terms of the average heat flows in the steady state. Our model suggests a new mechanism for the locomotion of micromachines in nonequilibrium biological systems.
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U2 - 10.7566/JPSJ.86.113801
DO - 10.7566/JPSJ.86.113801
M3 - Article
AN - SCOPUS:85035816825
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 11
M1 - 113801
ER -