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Hd Phase-locked Loop Studies;

Stateoftheart HybriD 2.0 Control Electronics incorporates highspeed digital lockin amplifiers (LIA) and phase locked loop detector (PLL) for advanced oscillatory resonance modes Amplitude Modulation with Frequency Imaging (AMFI) and Frequency Modulation (FM) modes. They provide exceptional level of spatial resolution of challenging flat and soft samples (selfassembled molecular structures etc.) thanks to ultraprecise control of the tipsample interaction force. Additionally they allow mapping of its mechanical properties. The two images below show topography and probe resonant frequency distribution over lamellar arrangement of short alkane C36H74 on graphite with a spacing of 4.5 nm. One can also see a couple of adsorbates formed on the lamellar surface by disordered alkane chains which are rarely observed by the traditional AM mode.