Ambient flash sintering of reduced graphene oxide/zirconia composites:Role of reduced graphene oxide

Fabrication of graphene/ceramic composites commonly requires a high-temperature sintering step with long times as well as a vacuum or inert atmosphere,which not only results in property degradation but also significant equipment complexity and manufacturing costs.In this work,the ambient flash sintering behavior of reduced graphene oxide/3 mol% yttria-stabilized ZrO₂(rGO/3 YSZ) composites utilizing rGO as both a composite component and a conductive additive is reported.When the sintering condition is carefully optimized,a dense and conductive composite can be achieved at room temperature and in the air within 20 s.The role of the rGO in the FS of the rGO/3 YSZ composites is elucidated,especially with the assistance of a separate investigation on the thermal runaway behavior of the rGO.The work suggests a promising fabrication route for rGO/ceramic composites where the vacuum and furnace are not needed,which is of interest in terms of simplifying the fabrication equipment for energy and cost savings.     

石墨烯纳米间隙电极对的制备研究进展

石墨烯的高晶体质量、高电导率、单层结构以及与有机半导体的良好兼容性使其成为纳米器件和分子器件的理想电极材料,纳米间隙电极对是构筑纳米器件的基础,发展了两种制备石墨烯纳米间隙电极对的方法——纳米线和金丝交替掩膜法以及原子力针尖裁剪法,其过程简单,制备的石墨烯间隙为100～200 nm.石墨烯纳米间隙电极对是制备纳米器件、...     

石墨烯中的等离子体光学效应及光器件应用

介绍了石墨烯光子学在等离子体激元光学和光电器件领域的最新进展,主要是石墨烯光子学在硅平台上实现光路选择和放大等光通信方面应用,及由此设计的宽带偏振器、宽带调制器和宽带光电探测器等光学元器件。