کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144422 | 1462062 | 2016 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A low-cost flexible pH sensor array for wound assessment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The pH level in a chronic wound bed is a key indicative parameter for assessment of the healing progress. Due to fragility and inability to measure multiple wound regions simultaneously, commercial glass microelectrodes are not well-suited for spatial mapping of the wound pH. To address this issue, we present an inexpensive flexible array of pH sensors fabricated on a polymer-coated commercial paper (palette paper). Each sensor consists of two screen-printed electrodes, an Ag/AgCl reference electrode and a carbon electrode coated with a conductive proton-selective polymeric (polyaniline, PANI) membrane. Laser-machining is used to create a self-aligned passivation layer with access holes that is bonded over the sensing and reference electrodes by lamination technology. Characterization of the pH sensors reveal a linear (r2Â =Â 0.9734) relationship between the output voltage and pH in the 4-10Â pH range with an average sensitivity of â50Â mV/pH. The sensors feature a rise and fall time of 12 and 36Â s for a pH swing of 8-6-8. The sensor biocompatibility is confirmed with human kertinocyte cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 229, 28 June 2016, Pages 609-617
Journal: Sensors and Actuators B: Chemical - Volume 229, 28 June 2016, Pages 609-617
نویسندگان
Rahim Rahimi, Manuel Ochoa, Tejasvi Parupudi, Xin Zhao, Iman K. Yazdi, Mehmet R. Dokmeci, Ali Tamayol, Ali Khademhosseini, Babak Ziaie,