Mitsui Toshiyuki, Stein Derek, Kim Young-Rok, Hoogerheide David, Golovchenko J A
Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2006 Jan 27;96(3):036102. doi: 10.1103/PhysRevLett.96.036102. Epub 2006 Jan 23.
We demonstrate the formation of nanoscale volcano-like structures induced by ion-beam irradiation of nanoscale pores in freestanding silicon nitride membranes. Accreted matter is delivered to the volcanoes from micrometer distances along the surface. Volcano formation accompanies nanopore shrinking and depends on geometrical factors and the presence of a conducting layer on the membrane's back surface. We argue that surface electric fields play an important role in accounting for the experimental observations.
我们展示了通过对独立氮化硅膜中的纳米级孔隙进行离子束辐照而诱导形成的纳米级火山状结构。堆积物质沿着表面从微米级距离输送到火山处。火山的形成伴随着纳米孔的收缩，并且取决于几何因素以及膜背面导电层的存在。我们认为表面电场在解释实验观察结果方面起着重要作用。
