摘要:
A scanning tunnel microscope comprising: a SEM stage (23) provided in a specimen chamber (3) of a SEM and having a mechanism (60-64) for moving in a two dimensional manner along a surface perpendicular to an electron beam (34); a specimen stage (25) provided on the SEM stage and provided with a mechanism (26-28) for holding a specimen (33) so that a surface of the specimen makes an angle of 45° with the electron beam and for moving the specimen in a two dimensional manner along the specimen surface; an STM scanning mechanism (41-57) provided on the SEM stage and provided with a probe (41) held perpendicularly to the specimen surface, an approaching mechanism (44-54) for making the probe approach to a position at a desired distance from the specimen surface, and a probe fine movement mechanism (53-56) for making the probe scan along the specimen surface; and a display unit (D1, D2) for displaying an image by the SEM together with an image of the probe on the basis of signal obtained from a secondary electron detector (4) provided in a specimen chamber (3) and for displaying an image by the STM on the basis of signals from said prove fine movement mechanism.
摘要:
A specimen is scanned with an electron beam so as to generate a signal characteristic of the specimen to thereby produce an image thereof on the basis of the generated signal. A memory (102) is provided for storing operating conditions of a scanning electron microscope (107) which are associated with identification information for specifying the specimen. The identification information is designated so that at least one operating condition corresponding to the designated identification information is read out from the memory (102), and the read out operating condition is automatically set so that the scanning electron microscope (107) is operated under the set operating condition.
摘要:
A scanned image to be observed or to be recorded is formed by N two-dimensional scanning cycles of an irradiating charged particle or light beam. In order to adjust the averaged irradiation intensity of the sample, the irradiating beam can be blanked during some of the N cycles.
摘要:
A scanning microscope, such as a scanning electron microscope, has an energy beam (1) which is caused to scan on a sample (4). A detector (6) detects the interaction of the beam (1) with the sample (4) and generates sample image signals which are used to generate a display image (20) of the scanned part of the sample (4). The sample image signals may be stored in an image memory (14) and a part of those sample image signals read to generate the display image. This permits an effective magnification to be achieved without scanning the sample with scanning lines which are too close. Alternatively, or in addition, the beam (1) may be cut intermittently during the scanning, at least for magnifications above a predetermined limit. Where scanning is in a series of frames, each of a series of scanning lines, such cutting may change the interval between frames, the interval between lines, or may cause intermittent cutting within a line. All these reduce the duration of the beam (1) on the sample (4), so reducing the risk of excessive charge build-up.
摘要:
A scanning microscope, such as a scanning electron microscope, has an energy beam (1) which is caused to scan on a sample (4). A detector (6) detects the interaction of the beam (1) with the sample (4) and generates sample image signals which are used to generate a display image (20) of the scanned part of the sample (4). The sample image signals may be stored in an image memory (14) and a part of those sample image signals read to generate the display image. This permits an effective magnification to be achieved without scanning the sample with scanning lines which are too close. Alternatively, or in addition, the beam (1) may be cut intermittently during the scanning, at least for magnifications above a predetermined limit. Where scanning is in a series of frames, each of a series of scanning lines, such cutting may change the interval between frames, the interval between lines, or may cause intermittent cutting within a line. All these reduce the duration of the beam (1) on the sample (4), so reducing the risk of excessive charge build-up.