Imaging Local Electric Field Distribution by Plasmonic Impedance Microscopy

Yixian Wang, Xiaonan Shan, Shaopeng Wang, Nongjian Tao, Pierre Yves Blanchard, Keke Hu, Michael V. Mirkin

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


We report on imaging of local electric field on an electrode surface with plasmonic electrochemical impedance microscopy (P-EIM). The local electric field is created by putting an electrode inside a micropipet positioned over the electrode and applying a voltage between the two electrodes. We show that the distribution of the surface charge as well as the local electric field at the electrode surface can be imaged with P-EIM. The spatial distribution and the dependence of the local charge density and electric field on the distance between the micropipet and the surface are measured, and the results are compared with the finite element calculations. The work also demonstrates the possibility of integrating plasmonic imaging with scanning ion conductance microscopy (SICM) and other scanning probe microscopies.

Original languageEnglish (US)
Pages (from-to)1547-1552
Number of pages6
JournalAnalytical Chemistry
Issue number3
StatePublished - Feb 2 2016

ASJC Scopus subject areas

  • Analytical Chemistry


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