Various systems configured to reduce distortion of a resist during a
metrology process are provided. The systems include an electron beam
metrology tool configured to measure one or more characteristics of one
or more resist features formed on a specimen. The electron beam metrology
tool may be configured as a scanning electron microscope. The resist may
be designed for exposure at a wavelength of about 193 nm. One system
includes a cooling subsystem configured to alter a temperature of the
specimen during measurements by the tool such that the resist feature(s)
are not substantially distorted during the measurements. Another system
includes a drying subsystem that is configured to reduce moisture
proximate the specimen during measurements by the electron beam metrology
tool such that the resist feature(s) are not substantially distorted
during the measurements. An additional system may include both the
cooling subsystem and the drying subsystem.