Direct observation of a widely tunable bandgap in bilayer graphene

  title={Direct observation of a widely tunable bandgap in bilayer graphene},
  author={Yuanbo Zhang and Tsung-Ta Tang and Çaǧlar Girit and Zhao Hao and Michael C. Martin and Alex Zettl and Michael F. Crommie and Y R Shen and Feng Wang},
The electronic bandgap is an intrinsic property of semiconductors and insulators that largely determines their transport and optical properties. As such, it has a central role in modern device physics and technology and governs the operation of semiconductor devices such as p–n junctions, transistors, photodiodes and lasers. A tunable bandgap would be highly desirable because it would allow great flexibility in design and optimization of such devices, in particular if it could be tuned by… 

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