Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry

Ali, Zahraa; Doğan Güzel, Fatma; Ucar, Ahmet; Ghorbanpoor, Hamed; Didarian, Reza

doi:10.55730/1300-0527.3532

Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry

Ahmet Ucar, (Ankara Yıldırım Beyazıt Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü, Ankara Türkiye)

Zahraa Ali, (Ankara Yıldırım Beyazıt Üniversite, Mühendislik ve Doğa Bilimleri Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümü, Ankara, Türkiye)

Hamed GHORBANPOOR, (Eskişehir Osmangazi Üniversitesi, Mühendislik ve Mimarlık Fakültesi, Biyomedikal Mühendisliği Bölümü, Eskişehir, Türkiye)

Reza DİDARİAN, (Ankara Yıldırım Beyazıt Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Biyomedikal Mühendisliği Bölümü, Ankara, Türkiye)

Fatma DOĞAN GÜZEL (Ankara Yıldırım Beyazıt Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Biyomedikal Mühendisliği Bölümü, Ankara, Türkiye)

Turkish Journal of Chemistry

15 0

Yıl: 2023 Cilt: 47 Sayı: 1 Sayfa Aralığı: 232 - 241 Metin Dili: İngilizce DOI: 10.55730/1300-0527.3532 İndeks Tarihi: 13-03-2023

Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry

Öz:

Microfluidic systems have attracted significant interest in recent years as they are extensively employed in lab-on-chip and organ-on-chip research. Their combination with electrochemical platforms offers many advantages, promising a high potential for sensing applications, still the microfluidic-channel integration onto electrodes might induce challenges related to changes in signal-to- noise ratios and mass transport conditions. In this study, we investigated the effect of microfluidic channel integration in redox behavior of thermally deposited gold thin film microelectrodes by voltammetric (CV and SWV) electrochemical measurements. Using different dimensions of PDMS microfluidic channels (i.e. widths of 50, 100, 250, and 500 μm) and a constant electrode dimension (200 μm), we analyzed the relationship between altered electroactive area and electrochemical response against target redox molecules. The increases in electroactive area which were determined by the microfluidic channel sizes were in well-correlation with the obtained CV and SWV redox currents as expected. There was no significant decrease in signal-to-noise ratio in microchannel-integrated electrodes. AFM and SEM characterization demonstrated that thermally deposited thin film electrodes had significantly lower (approximately 25 fold) surface roughness in comparison to commercial screen-printed electrodes. Additionally, we have observed a clear microelectrode-to- macroelectrode transition, from hemispherical to linear (planar) diffusion in other terms, with the increasing channel size.

Anahtar Kelime: Microfluidics lab-on-chip gold microelectrode macroelectrode redox electrochemistry sensing cyclic voltammetry

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Ucar A, Ali Z, Ghorbanpoor H, Didarian R, Doğan Güzel F (2023). Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. , 232 - 241. 10.55730/1300-0527.3532
Chicago	Ucar Ahmet,Ali Zahraa,Ghorbanpoor Hamed,Didarian Reza,Doğan Güzel Fatma Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. (2023): 232 - 241. 10.55730/1300-0527.3532
MLA	Ucar Ahmet,Ali Zahraa,Ghorbanpoor Hamed,Didarian Reza,Doğan Güzel Fatma Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. , 2023, ss.232 - 241. 10.55730/1300-0527.3532
AMA	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. . 2023; 232 - 241. 10.55730/1300-0527.3532
Vancouver	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. . 2023; 232 - 241. 10.55730/1300-0527.3532
IEEE	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F "Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry." , ss.232 - 241, 2023. 10.55730/1300-0527.3532
ISNAD	Ucar, Ahmet vd. "Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry". (2023), 232-241. https://doi.org/10.55730/1300-0527.3532

APA	Ucar A, Ali Z, Ghorbanpoor H, Didarian R, Doğan Güzel F (2023). Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. Turkish Journal of Chemistry, 47(1), 232 - 241. 10.55730/1300-0527.3532
Chicago	Ucar Ahmet,Ali Zahraa,Ghorbanpoor Hamed,Didarian Reza,Doğan Güzel Fatma Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. Turkish Journal of Chemistry 47, no.1 (2023): 232 - 241. 10.55730/1300-0527.3532
MLA	Ucar Ahmet,Ali Zahraa,Ghorbanpoor Hamed,Didarian Reza,Doğan Güzel Fatma Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. Turkish Journal of Chemistry, vol.47, no.1, 2023, ss.232 - 241. 10.55730/1300-0527.3532
AMA	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. Turkish Journal of Chemistry. 2023; 47(1): 232 - 241. 10.55730/1300-0527.3532
Vancouver	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry. Turkish Journal of Chemistry. 2023; 47(1): 232 - 241. 10.55730/1300-0527.3532
IEEE	Ucar A,Ali Z,Ghorbanpoor H,Didarian R,Doğan Güzel F "Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry." Turkish Journal of Chemistry, 47, ss.232 - 241, 2023. 10.55730/1300-0527.3532
ISNAD	Ucar, Ahmet vd. "Effect of microfluidic channel integration onto gold microelectrode on its redox electrochemistry". Turkish Journal of Chemistry 47/1 (2023), 232-241. https://doi.org/10.55730/1300-0527.3532