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The scanners of the DualScope DS 95 series are available in a number of different variants. The DS 95-50 scanner has a standard scan range of 50 µm x 50 µm x 5 µm, and the DS 95-200 scanner has a standard scan range of 200 µm x 200 µm x 15 µm. The DS 95-50 scanner can also be delivered with a larger Z scan range of 15 µm. The AFM scanners work in AC and DC mode (contact and non-contact mode) as well as support the measurement of the lateral torsion of the cantilever (Lateral Force mode). Irrespective of the scan range, all scanners have atomic resolution in the Z direction.
In the DS95 scanners, the laser unit is moved with the scanner during scanning, i.e. the laser point will not move at the back of the cantilever during scanning. Thus disturbances in the reflection layer on the cantilever do not influence the AFM image.
All scanners have a built-in linearization sensor in order to eliminate the influence of hysteresis in the Z piezo. Thereby, large differences in the height of the sample surface will be measured correctly, even if the scanner has only been calibrated with small differences in height, and vice versa. To allow measurements also in liquids, the scanner is equipped with a rubber membrane at the bottom, protecting the electronics from moisture entering the housing. So these scanners can also work in liquids such as water or alcohol.
The built-in optics in these scanners is similar to that of a 95 mm microscope objective. In contradistinction to the DualScope DS 45-40 model, the focal plane is independent of the cantilever position and lies app. 1 mm below the scanner front. Thus it is especially easy to find a certain position on the sample surface.
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