img
A short footnote: Circuit design for faradaic impedimetric sensors and biosensors    
Yazarlar
 Zihni Onur UYGUN Zihni Onur UYGUN
Kafkas Üniversitesi, Türkiye
Hilmiye Deniz Ertuğrul Uygun
Dokuz Eylül Üniversitesi, Türkiye
Özet
Electrochemical impedance spectroscopy (EIS) is an electrochemical surface characterization technique and has been widely used in biosensor and chemical sensors, also provides label free detection. This technique is used as faradaic and non-faradaic measurement. The advantage of the sensitivity of faradaic impedance spectroscopy becomes useful and preferred technique. In this review we tried to answer these questions: how Nyquist plots are fitted in proper circuit and how a proper circuit element is chosen in fitting and impedance calculation steps. Nyquist plot can become very confusing to fit on a proper circuit modal and calculation of impedance (Z). Z is called in other word as electron transfer resistance (Ret), additionally electrolyte interface impedance (Rs), capacitance (C) and Warburg impedance (W) are the other elements. These all circuit elements must be constructed in a proper order to fit Nyquist plot into a good circuit model. Therefore it is very important to examine Nyquist plot for accurate calculation. © 2014 Elsevier B.V.
Anahtar Kelimeler
Impedance | Capacitance | Warburg impedance | Nyquist plot | Impedimetric biosensor | Circuit design
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı SENSORS AND ACTUATORS B-CHEMICAL
Dergi ISSN 0925-4005
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 10-2014
Cilt No 202
Sayı 1
Sayfalar 448 / 453
Doi Numarası 10.1016/j.snb.2014.05.029
Makale Linki http://dx.doi.org/10.1016/j.snb.2014.05.029