Porous Zero-Mode Waveguides for Picogram-Level DNA Capture.

Porous Zero-Mode Waveguides for Picogram-Level DNA Capture.
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DOI:
10.1021/acs.nanolett.8b04170
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发表时间:
2019-02-13
期刊:
影响因子:
10.8
通讯作者:
Wanunu, Meni
Wanunu, Meni
中科院分区:
材料科学1区
文献类型:
--
作者:
Jadhav, Vivek;Hoogerheide, David P.;Korlach, Jonas;Wanunu, Meni

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We have recently shown that nanopore zero-mode waveguides are effective tools for capturing picogram levels of long DNA fragments for single-molecule DNA sequencing. Despite these key advantages, the manufacturing of large arrays is not practical due to the need for serial nanopore fabrication. To overcome this challenge, we have developed an approach for the wafer-scale fabrication of waveguide arrays on low-cost porous membranes, which are deposited using molecular-layer deposition. The membrane at each waveguide base contains a network of serpentine pores that allows for efficient electrophoretic DNA capture at picogram levels while eliminating the need for prohibitive serial pore milling. Here, we show that the loading efficiency of these porous waveguides is up to 2 orders of magnitude greater than their nanopore predecessors. This new device facilitates the scaling-up of the process, greatly reducing the cost and effort of manufacturing. Furthermore, the porous zero-mode waveguides can be used for applications that benefit from low-input single-molecule real-time sequencing.
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