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National Repository of Grey Literature 11 records found  previous11 - 11  jump to record: Search took 0.01 seconds. 
Fabrication of the STM tips - static and dynamic etching method
 Jonner, Jakub ; Spousta, Jiří (referee) ; Kostelník, Petr (advisor)
This bachelor thesis deals with the static and dynamic method of electrochemical etching way of fabrication tips for Scanning Tunneling Microscope (STM). This thesis describes basic principles of the mentioned methods and the construction solutions of the etching apparatuses. An extensive set of measurements was performed in order to obtain the main goal of the thesis – to determine the influence of various etching parameters on the process and final product. In case of static method, we used various concentrations of KOH solution, depths of plunge of the wolfram wire in to the etching solution and setpoints of the etching voltage. In case of dynamic method, we used also various concentrations of KOH solution and different settings of the etching solution flow rate and setpoints of the etching voltage. The ideal configuration of the etching parameters is presented at the end of the thesis as well with the comparison of the etching results from both of the eching methods.
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