Scanning optical microscopy with an electrogenerated chemiluminescent light source at a nanometer tip.

نویسندگان

  • Y Zu
  • Z Ding
  • J Zhou
  • Y Lee
  • A J Bard
چکیده

Electrogenerated chemiluminescence at electrodes with effective diameters down to 155 nm was used as a stable light source for near-field scanning optical microscopy imaging of an interdigitated array and a submicrometer size test substrate. Light was generated in a thin (approximately 500 microm) layer of an aqueous solution of 15 mM Ru(bpy)3(2+) and 100 mM tri-n-propylamine in a pH 7.5 buffer. The resolution obtained was compared to that found with a micrometer size electrode. The shear force from the tip attached to a quartz tuning fork was used to monitor and control the tip-to-substrate separation within the near field regime.

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عنوان ژورنال:
  • Analytical chemistry

دوره 73 10  شماره 

صفحات  -

تاریخ انتشار 2001