Beilstein Journal of Nanotechnology | 卷:10 |
Nitrous oxide as an effective AFM tip functionalization: a comparative study | |
Jack Hellerstedt1  Jaromír Kopeček1  Pingo Mutombo1  Bruno de la Torre2  Pavel Jelínek2  Taras Chutora2  Martin Švec2  | |
[1] Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic; | |
[2] Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic; | |
关键词: atomic force microscopy; Au(111); carbon monoxide; functionalization; high resolution; nitrous oxide; submolecular resolution; | |
DOI : 10.3762/bjnano.10.30 | |
来源: DOAJ |
【 摘 要 】
We investigate the possibility of functionalizing Au tips by N2O molecules deposited on a Au(111) surface and their further use for imaging with submolecular resolution. First, we characterize the adsorption of the N2O species on Au(111) by means of atomic force microscopy with CO-functionalized tips and density functional theory (DFT) simulations. Subsequently we devise a method of attaching a single N2O to a metal tip apex and benchmark its high-resolution imaging and spectroscopic capabilities using FePc molecules. Our results demonstrate the feasibility of high-resolution imaging. However, we find an inherent asymmetry of the N2O probe-particle adsorption on the tip apex, in contrast to a CO tip reference. These findings are consistent with DFT calculations of the N2O- and CO tip apexes.
【 授权许可】
Unknown