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    • Stable electrochemical measurements of platinum screen-printed electrodes modified with vertical ZnO nanorods for bacterial detection
    Authors: Dang Thi Thanh Le;  Advisor: -;  Co-Author: Nguyen Thi Hong Phuc; Matteo Tonezzer; Vu Quang Khue; Tran Quang Huy; Nguyen Duc Hoa;  Nguyen Van Hieu (-)

    The study is aimed at investigating the stability of electrochemical and biosensing properties of ZnO nanorod-based platinum screen-printed electrodes (SPEs) applied for detection of bacterial pathogens. The platinum SPEs were designed and patterned according to standard photolithography and lift-off process on a silicon wafer. ZnO nanorods (NRs) were grown on the platinum working electrode by the hydrothermal method, whereas Salmonella polyclonal antibodies were selected and immobilized onto ZnO NR surface via a crosslinking process. Morphological and structural characteristics of ZnO NRs were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The results showed that the ZnO NRs were grown vertically on platinum ...