Uraiwan WaiwijitKata JaruwongrungseeNipa ChokesajjawateeJurairat PromjaiTanom LomasPornpimol SritongkhamAdisorn TuantranontThailand National Electronics and Computer Technology CenterThailand National Center for Genetic Engineering and BiotechnologyMahidol University2018-06-112018-06-112012-12-012012 IEEE International Conference on Electron Devices and Solid State Circuit, EDSSC 2012. (2012)2-s2.0-84875718064https://repository.li.mahidol.ac.th/handle/20.500.14594/14022This work demonstrated a QCM biosensor for the detection of Salmonella typhimurium using the specific DNA probe. A thiol DNA probe was immobilized onto quartz surface coated with gold through self-assembly via Au-S bonding formation. 6-mercapto-1-hexanol (MCH) was used as blocking reagent against non-specific DNA binding. Target DNA with 94 bp (single strand) was hybridized with its probe resulted in a decrease in the resonance frequency of the QCM biosensor. It was demonstrated that the QCM biosensor could recognize the target DNA sequence within 40-70 min. The frequency shift signal was distinguishable along with the increase of target concentration from 0.1 to 1.0 μM. © 2012 IEEE.Mahidol UniversityComputer ScienceEngineeringConference PaperSCOPUS10.1109/EDSSC.2012.6482844