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Stretched rubber offers simpler method for assembling nanowires
Date:2/28/2011

search has presented a number of other methods for assembling nanowires. But the new method offers a number of distinct advantages. "Our method is cost-effective," says Feng Xu, a Ph.D. student working on this project, "because it is so simple. It can also be used for nanowires synthesized by different methods or processed in different conditions, for instance, silver nanowires synthesized in solution and silicon nanowires synthesized by the vapor-liquid-solid method, as demonstrated in our work." In addition, the new method can be used in conjunction with previous methods to achieve even better nanowire assembly.

The use of a rubber substrate in this method facilitates broad research and manufacturing sectors. For example, a key element of research into stretchable nanoelectronics involves aligning nanowires on a stretchable rubber substrate. Similarly, rubber is also the material used as "stamps" in transfer printing a critical fabrication method used in manufacturing nanodevices on diverse substrates ranging from silicon to glass to plastic.

Zhu notes that the initial step of the method, when the nanowires are first deposited on stretched rubber, sometimes yields an inconsistent degree of nanowire alignment. The team is currently working to understand the fundamental interface mechanics -including adhesion and static friction -between nanowires and rubber substrates, which is expected to lead to a better control of the assembly process and hence a higher yield of the nanowire assembly.


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Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert

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