TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.11.28 TI - Ratchets Learn to Embrace Logic JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 11 IS - SP - 28 EP - PY - 2003/06/20/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.11.28 A1 - Minkel, JR ER -