Servomechanism for locking scanning tunneling microscope tip over surface nanostructures

K. J. Ito, Y. Uehara, S. Ushioda, K. Ito

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Measurement of the light emission spectrum from a scanning tunneling microscope (STM) requires a long exposure time due to its extremely low intensity, and thermal drift of the tip during the exposure time limits the spatial resolution. To improve the resolution, a computer controlled servomechanism that locks the STM tip over a target position has been developed. We have measured the light emission spectra from individual nanometer scale structures on an evaporated Au film with and without this mechanism, and demonstrated the effectiveness of the servomechanism.

Original languageEnglish
Pages (from-to)420-423
Number of pages4
JournalReview of Scientific Instruments
Issue number2 I
Publication statusPublished - 2000 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation


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