TY - JOUR
T1 - Appling plasmonics based electrochemical microscopy to thin-layer electrochemistry
AU - Chao, Yen Chun
AU - Shan, Xiaonan
AU - Tao, Nongjian
N1 - Funding Information:
We thank CNSF (# 2137008 and # 2137902 ) and Gordon and Betty Moore Foundation for financial support.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/15
Y1 - 2016/11/15
N2 - Plasmonics based electrochemical microscopy (PECM) has been introduced to image local electrochemical reactions optically. The algorithm used to convert the plasmonic signal to current, however, is not applicable to thin-layer electrochemistry, which is important for microfluidic detection and biosensing applications. Here we introduce a PECM algorithm for both semi-infinite and thin-layer electrochemical geometries. The new algorithm expresses plasmonic signal as local concentration of redox species on the electrode surface, which, together with the diffusion and Nernst equations, determines the current. We validate the algorithm experimentally by fabricating a thin-layer electrochemical cell, consisting of two-parallel electrodes separated with various distances.
AB - Plasmonics based electrochemical microscopy (PECM) has been introduced to image local electrochemical reactions optically. The algorithm used to convert the plasmonic signal to current, however, is not applicable to thin-layer electrochemistry, which is important for microfluidic detection and biosensing applications. Here we introduce a PECM algorithm for both semi-infinite and thin-layer electrochemical geometries. The new algorithm expresses plasmonic signal as local concentration of redox species on the electrode surface, which, together with the diffusion and Nernst equations, determines the current. We validate the algorithm experimentally by fabricating a thin-layer electrochemical cell, consisting of two-parallel electrodes separated with various distances.
KW - Electrochemical imaging
KW - Plasmonic based electrochemical microscopy (PECM)
KW - Surface plasmon
KW - Thin layer electrochemistry
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U2 - 10.1016/j.jelechem.2016.07.029
DO - 10.1016/j.jelechem.2016.07.029
M3 - Article
AN - SCOPUS:84995592279
SN - 1572-6657
VL - 781
SP - 161
EP - 165
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
ER -