Inducing Nonlocal Reactions with a Local Probe
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- 作者：Jennifer M. MacLeod ; Josh Lipton-Duffin ; Chaoying Fu ; Federico Rosei
- 刊名：ACS Nano
- 出版年：2009
- 出版时间：November 24, 2009
- 年：2009
- 卷：3
- 期：11
- 页码：3347-3351
- 全文大小：372K
- 年卷期：0
- ISSN：1936-086X
文摘
The scanning tunneling microscope (STM) has evolved continually since its invention, as scientists have expanded its use to encompass atomic-scale manipulation, momentum-resolved electronic characterization, localized chemical reactions (bond breaking and bond making) in adsorbed molecules, and even chain reactions at surfaces. This burgeoning field has recently expanded to include the use of the STM to inject hot electrons into substrate surface states; the injected electrons can travel laterally and induce changes in chemical structure in molecules located up to 100 nm from the STM tip. We describe several key demonstrations of this phenomenon, including one appearing in this issue of ACS Nano by Chen et al. Possible applications for this technique are also discussed, including characterizing the dispersion of molecule−substrate interface states and the controlled patterning of molecular overlayers.