A schematic of the STM unit with the definitions of , , and directions; (a) structure of the inertial slider; (b) a side view of the STM unit; (c) driving signal; (d) electrode connections.
A schematic of the inertial slider control circuit.
Block diagram of the feedback control. AVC: absolute value circuit, Log: log amplifier, Driv.Sig: driving signal, : feedback voltage, : tunneling current.
raw-data image of HOPG taken in air, constant height mode, 100 mV bias (sample positive).
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