Nitrous oxide as an effective AFM tip functionalization: a comparative study

Beilstein Journal of Nanotechnology

卷:10

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