Patent ID: 6913982

Claim:
A method of fabricating a probe of a scanning prove microscope having a field-effect transistor channel, the method comprising: forming a tip by etching a single crystalline semiconductor substrate along the (100) plane, such that one end of the V-shaped groove to be a tip has a first angle and the (111) plane is exposed at the sloping sides of the V-shaped groove; forming a source region and a drain region by doping the sloping sides of the V-shaped groove with a first type of impurities; etching only a center portion of the V-shaped groove at which the sloping sides having the source and drain regions doped with the first type of impurities meet to have a second angle greater than the first angle, and to remove the first type of impurities such that a channel doped with a second type of impurities is formed at the center portion of the V-shaped groove.