Figure 3.

In situ STM images of surface structure transitions on the InAs WL by applying voltage at the particular sites (substrate temperature: 430°C). Whitecircles indicate hole structures, using it as markers for confirming the same position. a Before, b and c during applying voltages, d dot structures were appeared as indicated by whitearrows, and e these dots were collapsed

Toujyou and Tsukamoto Nanoscale Research Letters 2010 5:1930-1934   doi:10.1007/s11671-010-9802-z