期刊
APPLIED PHYSICS LETTERS
卷 101, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4749280
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资金
- National Science Foundation [DMR-1063632]
- Oregon Nanoscience and Microtechnologies Institute
- National Research Foundation of Korea [NRF-2011-220-D00052]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1063632] Funding Source: National Science Foundation
We investigate electron transport properties in large-area, single-layer graphene embedded in dielectric media, using free-space terahertz (THz) imaging and time-domain spectroscopy. Sandwiched between a thin polymethyl methacrylate (PMMA) layer and a Si substrate, graphene layers of different growth recipes exhibit distinctive spatial inhomogeneity of sheet conductivity. The non-contacting, non-destructive THz probe reveals that the PMMA layer induces a small, yet noticeable reduction in conductivity. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4749280]
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