Hydrogen deppasivation lithography (HDL) carried out by a scanning tunneling microscope (STM) is used to make patterns of Si dimers on a hydrogen passivated silicon surface. In this paper we discuss a new STM mode of operation that is highly suitable for removing single H atoms from the surface. This is made possible by changes we have made to the STM feedback control system that allows the STM to remove hydrogen atoms without switching the operational mode from imaging to lithography. Employing this method can potentially reduce the chance of tip-sample crash and increase the lithography precision.
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