@article{oai:kyutech.repo.nii.ac.jp:00006769, author = {Zhang, Dejian and Nagayama, Gyoko and 長山, 暁子}, issue = {50}, journal = {Langmuir}, month = {Nov}, note = {Wettability on nano/microstructured surfaces is gaining remarkable interest for a wide range of applications; however, little is known about the effective wetting area of the solid–liquid interface. In this study, the effect of wettability on electrochemical impedance was experimentally investigated to obtain a better understanding of the effective wetting area. We demonstrate that the water contact angle decreases significantly at hydrophilic surfaces with denser nano/microstructures. Based on the analysis of equivalent electrical circuits, we found that the electrochemical impedance decreases with reducing the water contact angle, showing a dependence on the effective wetting area, i.e., the real solid–liquid contact area. Also, the charge transfer resistance at low frequency was found to be the dominant parameter to estimate the effective wetting area at the solid–liquid interface.}, pages = {16508--16513}, title = {Effective Wetting Area Based on Electrochemical Impedance Analysis: Hydrophilic Structured Surface}, volume = {35}, year = {2019}, yomi = {ナガヤマ, ギョウコ} }