YAN LIANG, PHD / SCIENCE PHOTO LIBRARY YAN LIANG, PHD / SCIENCE PHOTO LIBRARY
2 of 3 The Si(111) 7Ã7 reconstruction was one of the most complicated surface structures. It took surface scientists over 25 years to solve its structure. It has been a test bed for many important surface imaging and analysis techniques, including scanning tunneling microscope (STM) and atomic force microscope (AFM). This animation helps the viewers to understand this surface structure.
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