基于催化纳米马达的化学传感：基于运动的痕量银检测
Chemical sensing based on catalytic nanomotors: motion-based detection of trace silver.
作者信息
Kagan Daniel, Calvo-Marzal Percy, Balasubramanian Shankar, Sattayasamitsathit Sirilak, Manesh Kalayil Manian, Flechsig Gerd-Uwe, Wang Joseph
机构信息
Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, USA.
出版信息
J Am Chem Soc. 2009 Sep 2;131(34):12082-3. doi: 10.1021/ja905142q.
Abstract
A motion-based chemical sensing involving fuel-driven nanomotors is demonstrated. The new protocol relies on the use of an optical microscope for tracking changes in the speed of nanowire motors in the presence of the target analyte. Selective and sensitive measurements of trace silver ions are illustrated based on the dramatic and specific acceleration of bimetal nanowire motors in the presence of silver. Such nanomotor-based measurements would lead to a wide range of novel and powerful chemical and biological sensing protocols.
摘要
展示了一种基于运动的化学传感，该传感涉及燃料驱动的纳米马达。新方案依赖于使用光学显微镜来跟踪在存在目标分析物的情况下纳米线马达速度的变化。基于双金属纳米线马达在银存在下显著且特定的加速，说明了对痕量银离子的选择性和灵敏测量。这种基于纳米马达的测量将导致一系列新颖且强大的化学和生物传感方案。
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