AVS 61st International Symposium & Exhibition
    Fundamentals & Biological, Energy and Environmental Applications of Quartz Crystal Microbalance Focus Topic Thursday Sessions
       Session QC+AS+BI+MN-ThP

Paper QC+AS+BI+MN-ThP1
In Situ Toxic Nano-Material Sensing Method Using DNA Immobilized Quartz Crystal Microbalance

Thursday, November 13, 2014, 6:00 pm, Room Hall D

Session: Fundamentals & Biological, Energy and Environmental Applications of Quartz Crystal Microbalance Poster Session
Presenter: Kuewhan Jang, Korea University, Republic of Korea
Authors: K. Jang, Korea University, Republic of Korea
S. Lee, Korea University, Republic of Korea
J. You, Korea University, Republic of Korea
C. Park, Korea University, Republic of Korea
J. Park, Korea University, Republic of Korea
S. Na, Korea University, Republic of Korea
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Nano-material has grown from scientific interest to commercial products and there are more than 1600 nano-material products on the market. Among those nano-materials, single-walled carbon nanotube (SWNT) and silver ion have been shown great interest due to their extraordinary properties. Since SWNT and silver ion production capacity increases each year, its contamination to the environment water system will increase in the form of industrial waste. Moreover, toxicity assessment of those materials is required for human health and environmental issue since the toxicity of those materials has been reported. In this study, we propose the in-situ detection of SWNT and silver ion. The detection mechanism is based on the measurement of the resonance frequency shift arisen from the binding on the DNA immobilized quartz crystal microbalance. We are able to detect SWNT and silver ion less than an hour with the detection limit of 100 ng/ml of SWNT and 100 pM of silver ion, respectively. Moreover, the DNA immobilized quartz crystal microbalance enables the detection in real tap water. This work shows the potential of DNA immobilized quartz crystal microbalance as the in-situ toxic nano-material screening tool.