We have developed microprocesses to make carbon-nanotube probes for a scann
ing probe microscope, The processes contain electric-field induced transpor
tation, welding and fixation by electron-beam carbon deposition and are per
formed in a scanning electron microscope equipped with two individual manip
ulable stages. Using the nanotube probes produced, a fine structure of heli
cal and twinned deoxyribonucleic acid and an abrupt height transition with
high fidelity in a 4.7 GB digital versatile disk are imaged with tapping-mo
de atomic force microscopy in air. (C) 2000 American Vacuum Society. [S0734
-211X(00)02502-6].