TY - JOUR
T1 - Energetics of a forced thermal ratchet
AU - Kamegawa, Hideki
AU - Hondou, Tsuyoshi
AU - Takagi, Fumiko
PY - 1998
Y1 - 1998
N2 - We formulate energetics of the forced thermal ratchet [M. O. Magnasco, Phys. Rev. Lett. 71, 1477 (1993)] and evaluate its efficiency of energy transformation. We show that the presence of thermal fluctuation cannot increase the efficiency of the energy transformation in the original system of Magnasco, which is contrary to his claim that “There is a region of the operating regime where the efficiency is optimized at finite temperatures.” We also discuss the maximum efficiency of the forced thermal ratchet.
AB - We formulate energetics of the forced thermal ratchet [M. O. Magnasco, Phys. Rev. Lett. 71, 1477 (1993)] and evaluate its efficiency of energy transformation. We show that the presence of thermal fluctuation cannot increase the efficiency of the energy transformation in the original system of Magnasco, which is contrary to his claim that “There is a region of the operating regime where the efficiency is optimized at finite temperatures.” We also discuss the maximum efficiency of the forced thermal ratchet.
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U2 - 10.1103/PhysRevLett.80.5251
DO - 10.1103/PhysRevLett.80.5251
M3 - Article
AN - SCOPUS:3843150509
SN - 0031-9007
VL - 80
SP - 5251
EP - 5254
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
ER -