mbnu FY2019 Annual Report 3.3.5
Figure 12: D. acidovorans response at several concentrations of AuCl3 monitored using QCM. (a) The microorganisms are then stressed with soluble gold (50 μM AuCl3), and both frequency and dissipation are monitored for more than 14h. The gold biomineralization and the subsequent gold nanonuggets production yield a progressive decrease in the resonant frequency of the gold coated quartz substrate due to the deposition of gold complexes on the QCM sensor. A decrease in the dissipation signal is also observed, which indicates a gradual stiffening of the material that is in contact with the QCM sensor surface. (b) Frequency response of the biofilm-covered QCM sensor surface at different concentrations of the soluble gold.
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).
