使用具有形状记忆效应的复合纳米镊子从DNA组装纳米结构
Assembling nanostructures from DNA using a composite nanotweezers with a shape memory effect
摘要：
本文展示了一种技术，用于制造包含悬浮DNA线的结构，并使用具有形状记忆效应的复合纳米镊子操纵它们。这种技术可能适用于拉伸纳米丝DNA样导电线，并测量其电导率，包括直接在电子显微镜室中的I-V特性，其中纳米镊子提供DNA尖端的双侧夹持，从而与DNA束形成稳定的纳米接触。作为1D纳米结构的一部分，这种接触在使用纳米线的操作期间比例如在扫描隧道显微镜中当纳米线被细针触摸时的传统测量更可靠。
英文摘要：
The article demonstrates a technique for fabricating a structure with the inclusion of suspended DNA threads and manipulating them using composite nanotweezers with shape memory effect. This technique could be suitable for stretching of nanothin DNA-like conductive threads and for measuring their electrical conductivity, including the I-V characteristic directly in the electron microscope chamber, where the nanotweezers provide a two-sided clamping of the DNA tip, giving a stable nanocontact to the DNA bundle. Such contact, as a part of 1D nanostructure, is more reliable during manipulations with nanothreads than traditional measurements when a nanothread is touched by a thin needle, for example, in a scanning tunnel microscope.
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