%0 Journal Article %A Liu, Shenghua %A Fu, Ying %A Xiong, Can %A Liu, Zhike %A Zheng, Lei %A Yan, Feng %D 2018 %T Detection of Bisphenol A Using DNA-Functionalized Graphene Field Effect Transistors Integrated in Microfluidic Systems %U https://acs.figshare.com/articles/journal_contribution/Detection_of_Bisphenol_A_Using_DNA-Functionalized_Graphene_Field_Effect_Transistors_Integrated_in_Microfluidic_Systems/6738842 %R 10.1021/acsami.8b04260.s001 %2 https://ndownloader.figshare.com/files/12288872 %K label-free BPA sensors %K DNA-functionalized solution-gated graphene transistors %K detection limit %K DNA-Functionalized Graphene Field Effect Transistors Integrated %K Microfluidic Systems Bisphenol %K double-stranded DNA %K devices change monotonically %K microfluidic systems %K recycling detections %K BPA detections %K graphene surface %K channel currents %K food safety %K double-stranded DNA molecules %X Bisphenol A (BPA) detection has attracted much attention recently for its importance to food safety and environment. The DNA-functionalized solution-gated graphene transistors are integrated in microfluidic systems and used for recycling detections of BPA for the first time. In the presence of BPA, both single- and double-stranded DNA molecules are detached and released from the graphene surface in aqueous solutions, leading to the change of device electrical performance. The channel currents of the devices change monotonically with the concentration of BPA. Moreover, the devices modified with double-stranded DNA are more sensitive to BPA and show the detection limit down to 10 ng/mL. The highly sensitive label-free BPA sensors are expected to be used for convenient BPA detections in many applications. %I ACS Publications