TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.19.6 TI - Cold Fingers JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 19 IS - SP - 6 EP - PY - 2007/02/26/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.19.6 A1 - Sherwood, Jonathan ER -