Revealing the Presence of Mobile Molecules on the Surface
| Autor: | Grazyna Antczak, Konrad Boom, Karina Morgenstern |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Surface (mathematics)
Imagination Physics Chemical substance media_common.quotation_subject Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Noise (electronics) 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention General Energy law Chemical physics Potential energy surface Molecule Physical and Theoretical Chemistry Scanning tunneling microscope 0210 nano-technology Science technology and society media_common |
| Zdroj: | The Journal of Physical Chemistry C. 121:542-549 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.6b11246 |
| Popis: | Mobile molecules crossing freely underneath the scanning tip of a scanning tunneling microscope create a uniform diffusive noise, making the identification of single molecules on the surface a challenge. We demonstrate the possibility of detecting mobile molecules on a surface by scanning tunneling microscopy and reveal how the diffusive noise is created. Additionally, we show that a molecule caught in the tip–sample junction allows us to explore the potential energy surface of the system. Finally, voltage pulses disturb the mobile molecules, causing the loss of that ability. They also allow the creation of islands on the surface. Most of the investigations were done for Co- and Cu-phthalocyanine (Pc) on Ag(100). However, the concept is limited to neither Pc molecules nor Ag(100), as shown for a different organic molecule, astraphloxin, on Cu(111). |
| Databáze: | OpenAIRE |
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