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      The Organizing Committee of the NanoTech Poland 2024 - 14th International Conference, 05th-07th June 2024, has a great pleasure to invite you to attend this scientific event and to enjoy the community of professionals in the field of nanoscience and nanotechnology

    • Meeting of the LaSensA project members


      On October 24 and 25, 2023, in Poznań, members of the consortium of the National Science Center research project "M-ERA.NET" carried out in the NanoBioMedical Centre under the supervision of prof. UAM Mikołaj Lewandowski gathered to discuss the project's progress and to outline plans for future research.

    • Demonstration of chemical experiments and a lecture entitled „Between mathematics and chemistry. Interdisciplinarity in exact sciences”


      On May 29, 2023, employees of the NanoBioMedical Centre, Dr. Patryk Florczak and Dr. Eng. Roksana Markiewicz together with the staff from the Zespół Szkół im. Adama Mickiewicza in Objezierze presented a demonstration of chemical experiments and a lecture entitled „Between mathematics and chemistry. Interdisciplinarity in exact sciences”.

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Highlighted Publications

Advanced Materials Interfaces, 2021, doi.org/10.1002/admi.202002172
Z. Miłosz, D. Wilgocka‐Ślęzak, E. Madej, N. Spiridis, S. Jurga, F. Stobiecki, M. Lewandowski

Graphene Blocks Oxidative Segregation of Iron Dissolved in Platinum: A Model Study

Iron–platinum (Fe–Pt) compounds are well known for their interesting magnetic and electrocatalytic properties. However, iron segregation and iron oxides formation under oxidative conditions may influence the characteristics of Fe–Pt systems. Several approaches are used to protect the Fe–Pt compounds from oxidation, the most promising of which involves covering the material with a protective graphitic layer. By performing model‐type ultrahigh vacuum (UHV) studies, it is shown that a layer of epitaxial graphene (Gr) grown on a [111]‐oriented single‐crystal platinum substrate with thermally dissolved iron (Fe–Pt(111) surface alloy) effectively blocks iron segregation and iron oxides formation under oxidative conditions, while still allowing for the adsorption of oxygen atoms underneath the carbon layer. The oxidation is monitored in real time and at the micrometer scale using low energy electron microscopy (LEEM) and local diffraction (μLEED). Notably, a similar result is obtained for a poorly ordered Gr‐like carbon layer grown directly on a Fe–Pt(111) substrate. The findings are rationalized in terms of a locally lowered partial oxygen pressure and inhibited iron oxide growth in a confined space between the carbon layer and the metal support.
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XRAY diffraction 23.11.2018

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