Reversible positioning of single molecules inside zero-mode waveguides.

Reversible positioning of single molecules inside zero-mode waveguides.
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DOI:
10.1021/nl503134x
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发表时间:
2014-10-08
期刊:
影响因子:
10.8
通讯作者:
Wanunu M
Wanunu M
中科院分区:
材料科学1区
文献类型:
--
作者:
Larkin J;Foquet M;Turner SW;Korlach J;Wanunu M

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我们已经开发了一种混合纳米孔/零模波导器件,用于单分子荧光和DNA测序应用。该设备是一种独立的固态膜,具有低于5 nm的纳米孔,可将单个生物分子可逆地传递到70 nm直径的波导底部进行询问。通过控制器件两端的电压实现快速和可逆的分子加载。使用该装置,我们证明了蛋白质和DNA的负载效率比基于扩散的分子负载高几个数量级。
We have developed a hybrid nanopore/zero-mode waveguide device for single-molecule fluorescence and DNA sequencing applications. The device is a freestanding solid-state membrane with sub-5 nm nanopores that reversibly delivers individual biomolecules to the base of 70 nm diameter waveguides for interrogation. Rapid and reversible molecular loading is achieved by controlling the voltage across the device. Using this device we demonstrate protein and DNA loading with efficiency that is orders of magnitude higher than diffusion-based molecular loading.
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