时间：12月5日下午3：00

地点：实验室一楼会议室

报告人：但亚平 教授 (上海交通大学)

题目：Self-Assembly of Macromolecules for Single Atoms Control

Self-Assembly of Macromolecules for Single Atoms Control

Yaping Dan, PhD

UM-SJTU Joint Institute, Shanghai Jiao Tong University

Researchers at IBM first demonstrated the manipulation of xenon atoms at nickel substrate by using scanning tunneling microscope (STM) in 1995. In recent years, this technology was applied to control single dopant atoms at the surface of silicon substrates, forming transistors and quantum computing circuits. However, the technology does not fit for mass production of single atom devices and circuits. In this talk, I propose to control single dopant atoms at large scale by self-assembly of macromolecules. Each of the synthesized macromolecules carries only one phosphorus atom. The molecules are immobilized on the patterned silicon surface by forming covalent bonds with silicon. The molecule-carried phosphorus dopants are thermally driven into the silicon substrate and electrically activated by rapid thermal annealing. Low temperature Hall measurements and deep level transient spectroscopy are employed to investigate the electronic properties of doped substrates. The realization of single dopant atoms at large scale is still in progress.

Bio

Dr. Yaping Dan is currently a tenure-track associate professor at UM-SJTU Joint Institute, Shanghai Jiao Tong University. He received the Bachelor from Xi’an Jiaotong University, Master’s degree from Tsinghua University and PhD degree from the University of Pennsylvania. He joined the UM-SJTU Joint Institute as a faculty member in 2012 after finishing his postdoctoral research at Harvard University. He won the “1000 Young Scholars” award and Shanghai “Pujiang Talent Program” Award.

编辑时间：2016-12-01 15:50:46