学术报告:Games that scientists play with carbon and phosphorus nanostructures

2015/06/15 | 【 【打印】【关闭】 | 访问次数:

报告题目:Games that scientists play with carbon and phosphorus nanostructures

报 告 人:David Tomanek(Michigan State University)

报告时间: 2015年6月19日(星期五)下午2:00-3:30

报告地点:嘉定园区办公楼316房间

报告人研究方向:

•Nanowires

•Carbon nanotubes

•Simulation of fullerene collisions

•Simulation of C60 melting

•Simulation of ferrofluids

 

报告摘要:

Graphene monolayers, have sparked off unprecedented interest due to their unique electronic structure, but will unlikely replace silicon electronics due to a vanishing fundamental band gap. To still realize the promise of 2D semiconductor electronics, scientists are turning to other layered materials with a nonzero band gap. In this respect, layered structures of group V elements are rapidly attracting interest. Few-layer phosphorus dubbed phosphorene combines high carrier mobility with an unprecedented tunability of the band gap [1-3]. Multiple allotropes of phosphorene, illustrated in Figure 1, may be synthesized by CVD and coexist within a monolayer with virtually no energy penalty to form grain boundaries [3]. Similar to graphene, phosphorene may form fullerenes and nanotubes [4]. There are countless possibilities to tile a phosphorene monolayer with different allotropes, providing the possibility of complex electronic structure patterning [5]. Similar intriguing electronic properties as found in phosphorene are postulated also for arsenene, a monolayer of gray arsenic. Computer simulations are a welcome means to gain microscopic insight into the physical properties and possible ways to synthesize these structures, as a guide to experimental efforts.

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