以硅为材质制成有助于生物传感器发展的弹性结构

生物谷

根据一份最新的研究报告指出，科学家利用纳米操作的技术，成功的发展出单一晶格的半导体 (single-crystalline semiconductor) ，而据初步的测试，这种新一代的材质，不但具有极佳的几何延展性，还可能可以发展成生物传感器，成为人造肌肉以及组织的一部份。

这个由美国阿冈国家实验室 (Argonne National Laboratory)能源部与伊利诺大学香槟分校 (University of Illinois at Urbana Champaign)科学家所共同合作的研究计划，主要的目标就是想发展出能够涂抹在弯曲表面，类似塑料基质上具有传导能力的弹性电极 (Flexible electronics) ，研究人员认为，如果能够突破这类传导介质的限制，发展出具有弹性，又可以任意弯曲的微线圈，那么对于生物兼容性设备的发展，应该会有很大的帮助。

结果研究人员以硅 (silicon)为材质，发展出像缎带般，类似手风琴可弯曲的弹性微传导材质，并且将这个研究成果发表在最新一期材料化学期刊 (Journal of Materials Chemistry)上。参与的科学家下一个目标，就是如何的把这种微传导材质，整合到人造肌肉，甚至是人造器官内，成为未来生物性传感器的目标。

(资料来源 : biocompare)

原始出处: http://news.biocompare.com/newsstory.asp?id=176963

部分英文原文：

J. Mater. Chem., 2007, 17, 832 - 840, DOI: 10.1039/b614793c

Structural forms of single crystal semiconductor nanoribbons for high-performance stretchable electronics

Yugang Sun and John A. Rogers

This feature article reviews some concepts for forming single-crystalline semiconductor nanoribbons in stretchable geometrical configurations with emphasis on the materials and surface chemistries used in their fabrication and the mechanics of their response to applied strains. As implemented with ribbons that have periodic or aperiodic sinusoidal wavy or buckled shapes and are surface chemically bonded to elastomeric poly(dimethylsiloxane) (PDMS) supports, these concepts enable levels of mechanical stretchability (and compressibility) that exceed, by orders of magnitude, the intrinsic fracture strains in the ribbon materials themselves. These results, in combination with active functional device elements that can be formed on the surfaces of these wavy or buckled ribbons, represent a class of potentially valuable building blocks for stretchable electronics, with application possibilities in personal or structural health monitors, sensory skins, spherically curved focal plane arrays and other systems that cannot be achieved easily with other approaches.