Self-assembled molecular layer
Self-assembled molecular layer(F14H20) forms nanoscale domains with intrinsic surface potential variations, making it an effective sample for evaluating KPFM sensitivity and contrast.
Among AM-, Sideband-, and Heterodyne KPFM modes, Heterodyne KPFM provides the highest signal-to-noise ratio and the most clearly resolved potential contrast across the molecular domains.
Scan Conditions
- System: FX200
- Scan Mode: KPFM
- Scan Size: 2 µm×2 µm
- Scan Rate: 1 Hz
- Pixels: All 512×512
- Cantilever: SPARK 70 Pt
(k=2 N/m, f=70 kHz)
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