Near-field infrared microscopy of nanometer-sized nickel clusters inside single-walled carbon nanotubes

0519133 - ÚFCH JH 2020 RIV GB eng J - Článek v odborném periodiku
Németh, G. - Datz, D. - Pekker, A. - Saito, T. - Domanov, O. - Shiozawa, Hidetsugu - Lenk, S. - Pécz, B. - Koppa, P. - Kamaras, K.
Near-field infrared microscopy of nanometer-sized nickel clusters inside single-walled carbon nanotubes.
RSC Advances. Roč. 9, č. 59 (2019), s. 34120-34124. E-ISSN 2046-2069
Institucionální podpora: RVO:61388955
Klíčová slova: nanowires * constants * nickel nanoclusters
Obor OECD: Physical chemistry
Impakt faktor: 3.119, rok: 2019
Způsob publikování: Open access
https://pubs.rsc.org/en/content/articlepdf/2019/ra/c9ra07089c

Nickel nanoclusters grown inside single-walled carbon nanotubes (SWCNT) were studied by infrared scattering-type scanning near-field optical microscopy (s-SNOM). The metal clusters give high local contrast enhancement in near-field phase maps caused by the excitation of free charge carriers. The experimental results are supported by calculations using the finite dipole model, approximating the clusters with elliptical nanoparticles. Compared to magnetic force microscopy, s-SNOM appears much more sensitive to detect metal clusters inside carbon nanotubes. We estimate that these clusters contain fewer than approximate to 700 Ni atoms.
Trvalý link: http://hdl.handle.net/11104/0304155