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dc.contributor.authorLin, Ting-Chunzh_TW
dc.contributor.authorLi, Yan-Shengzh_TW
dc.contributor.authorChiang, Wei-Hungzh_TW
dc.contributor.authorPei, Zingwayzh_TW
dc.description.abstractIn this work, we developed a field effect transistor (FET) biosensor utilizing solution-processed graphene oxide nanoribbon (GONR) for methylene blue (MB) sensing. MB is a unique material; one of its crucial applications is as a marker in the detection of biomaterials. Therefore, a highly sensitive biosensor with a low detection limit that can be fabricated simply in a noncomplex detection scheme is desirable. GONR is made by unzipping multiwall carbon nanotubes, which can be mass-produced at low temperature. The GONR-FET biosensor demonstrated a sensitivity of 12.5μA/mM (determined according to the drain current difference caused by the MB concentration change). The Raman spectra indicate that the materials quality of the GONR and the domain size for the C=C sp2 bonding were both improved after MB detection. X-ray photoelectron spectroscopy revealed that the hydroxyl groups on the GONR were removed by the reductive MB. According to XPS and Raman, the positive charge is proposed to transfer from MB to GONR during sensing. This transfer causes charge in-neutrality in the GONR which is compensated by releasing •OH functional groups. With high sensitivity, a low detection limit, and a simple device structure, the GONR-FET sensor is suitable for sensing biomaterials.zh_TW
dc.relationBiosensors & bioelectronics, Volume 89, Issue Pt 1, Page(s) 511-517.zh_TW
dc.subjectField effect transistorzh_TW
dc.subjectGraphene oxide nanoribbonzh_TW
dc.subjectMethylene bluezh_TW
dc.subjectBiosensing Techniqueszh_TW
dc.subjectElectrochemical Techniqueszh_TW
dc.subjectEquipment Designzh_TW
dc.subjectMethylene Bluezh_TW
dc.subjectTransistors, Electroniczh_TW
dc.titleA high sensitivity field effect transistor biosensor for methylene blue detection utilize graphene oxide nanoribbonzh_TW
dc.typeJournal Articlezh_TW
Appears in Collections:光電工程研究所


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