Scanning probe microscope with a reduced Q-factor
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United States of America Patent
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Feb 20, 2018
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N/A
app pub date -
Oct 5, 2015
filing date -
Oct 6, 2014
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Abstract
A scanning probe microscope is provided comprising a scanning probe (10), a holder (5) for holding a sample (SMP) in an environment free from liquid. A scanning arrangement (20) is provided therein for inducing a relative motion of the scanning probe (10) with respect to said sample (SMP) along a surface of the sample (SMP). A driver (30) generates a drive signal (Sd) to induce an oscillating motion of the scanning probe (10) relative to the surface of the sample to be scanned. A measuring unit (40) measure a deflection of the scanning probe (10), and provides a deflection signal (Sδ) indicative for said deflection. An amplitude detector (50) detects an amplitude of the oscillating motion as indicated by the deflection signal (Sδ) and provides an amplitude signal (Sa) indicative for the amplitude. The scanning probe (10) is at least partly arranged in a liquid (L) to dampen motion of said scanning probe, and therewith has a quality factor Q which is less than or equal than 5. The scanning probe (10) is accommodated in a casing (90) comprising said liquid (L), the scanning probe (10) comprising a flexible carrier (11), the flexible carrier having a movable part provided with a tip (12), which tip (12) extends through an opening (91) in said casing.
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