FIELD: physics.
SUBSTANCE: method for controlled growth of quantum dots from colloidal gold in a composite AFM/STM system comprises growing quantum dots with a negative voltage applied between the cantilever needle of the composite AFM/STM and a conducting substrate, wherein during growth of the quantum dots, the method includes periodically switching polarity of the external voltage from negative to positive and detecting a single peak at the tunnelling current-voltage curve at a certain value of the applied voltage from a range of values of 1 to 5 V. Growth of quantum dots is complete when the single peak is observed at the same value of the applied voltage as for a control quantum dot of a given size.
EFFECT: providing precision control of the size of quantum dots.
3 dwg
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