Nanoscale Footprints of Self-Running Gallium Droplets on GaAs SurfaceReportar como inadecuado




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In this work, the nanoscale footprints of self-driven liquid gallium droplet movement on a GaAs 001 surface will be presented and analyzed. The nanoscale footprints of a primary droplet trail and ordered secondary droplets along primary droplet trails are observed on the GaAs surface. A well ordered nanoterrace from the trail is left behind by a running droplet. In addition, collision events between two running droplets are investigated. The exposed fresh surface after a collision demonstrates a superior evaporation property. Based on the observation of droplet evolution at different stages as well as nanoscale footprints, a schematic diagram of droplet evolution is outlined in an attempt to understand the phenomenon of stick-slip droplet motion on the GaAs surface. The present study adds another piece of work to obtain the physical picture of a stick-slip self-driven mechanism in nanoscale, bridging nano and micro systems.



Autor: Jiang Wu, Zhiming M. Wang , Alvason Z. Li, Mourad Benamara, Shibin Li, Gregory J. Salamo

Fuente: http://plos.srce.hr/



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