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Study Findings from University of Houston Broaden Understanding of Nanosheets (Anomalous piezoelectricity in two-dimensional graphene nitride...

August 15, 2014

Study Findings from University of Houston Broaden Understanding of Nanosheets (Anomalous piezoelectricity in two-dimensional graphene nitride nanosheets)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Nanosheets have been published. According to news reporting out of Houston, Texas, by NewsRx editors, research stated, "Piezoelectricity is a unique property of materials that permits the conversion of mechanical stimuli into electrical and vice versa. On the basis of crystal symmetry considerations, pristine carbon nitride (C3N4) in its various forms is non-piezoelectric."

Our news journalists obtained a quote from the research from the University of Houston, "Here we find clear evidence via piezoresponse force microscopy and quantum mechanical calculations that both atomically thin and layered graphitic carbon nitride, or graphene nitride, nanosheets exhibit anomalous piezoelectricity. Insights from ab inito calculations indicate that the emergence of piezoelectricity in this material is due to the fact that a stable phase of graphene nitride nanosheet is riddled with regularly spaced triangular holes. These non-centrosymmetric pores, and the universal presence of flexoelectricity in all dielectrics, lead to the manifestation of the apparent and experimentally verified piezoelectric response."

According to the news editors, the research concluded: "Quantitatively, an e(11) piezo-electric coefficient of 0.758 Cm-2 is predicted for C3N4 superlattice, significantly larger than that of the commonly compared alpha-quartz."

For more information on this research see: Anomalous piezoelectricity in two-dimensional graphene nitride nanosheets. Nature Communications, 2014;5():1-7. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group -; Nature Communications -

Our news journalists report that additional information may be obtained by contacting M. Zelisko, University of Houston, Dept. of Phys, Houston, TX 77204, United States. Additional authors for this research include Y. Hanlumyuang, S.B. Yang, Y.M. Liu, C.H. Lei, J.Y. Li, P.M. Ajayan and P. Sharma (see also Nanosheets).

Keywords for this news article include: Texas, Houston, Nanosheets, United States, Nanotechnology, Emerging Technologies, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Science Letter

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