Research of the influence of the macroscopic shape of the etching neck of the STM probe blank at its nanoscale topology

The problems of the influence of the macroscopic shape of the neck of the STM probe blank at producing the atomic nanoscale protrusion are observed with manufacturing the probes by chemical etching. The results of a two-stage modeling process (at macroscopic and atomic scale.) of the neck disruption the tungsten blanks with use of particle dynamics method are presented. It is shown that the most suitable for production the atomic STM resolution are the blanks of STM probes with a thin necks and asymmetrical shape.