Professional career

since 2019
Post-doctoral researcher
Biofilm Centre – Aquatic Microbiology, University Duisburg-Essen, Working group of Prof. Dr. Rainer U. Meckenstock

2016-2019
PhD student
Institute of Inorganic Chemistry, University Duisburg-Essen, Working group of Prof. Dr. Matthias Epple

2010-2016
Student assistant
Institute of Inorganic Chemistry, University Duisburg-Essen, Working group of Prof. Dr. Matthias Epple

Education

2016-2019
PhD student
Institute of Inorganic Chemistry, University Duisburg-Essen, Working group of Prof. Dr. Matthias Epple
PhD thesis: „Wet-chemical synthesis of mono- and bimetallic nanoparticles of group VIII to XI metals and their detailed characterisation“

2011-2016
M. Sc. Chemistry
Institute of Inorganic Chemistry, University Duisburg-Essen, Working group of Prof. Dr. Matthias Epple
Master thesis: „Synthese und Charakterisierung von mono- und bimetallischer Nanopartikel ausgewählter Platinmetalle“
Immersion thesis: „Synthese und Charakterisierung von Platin-Nanopartikeln“

2007-2010
B. Sc. Chemistry
Institute of Inorganic Chemistry, University Duisburg-Essen, Working group of Prof. Dr. Matthias Epple
Bachelor thesis: „Elementaranalytische Bestimmung der Funktionalisierung von Gold-Nanopartikeln“

2006-2007
Study of Chemistry and Physics for lectureship, University Duisburg-Essen

2006
Higher education entrance qualification, Comprehensive school Hattingen

Visits abroad

09/2017
Research stay (DAAD scholarship)
Anna University, Working group of Prof. Dr. S. Narayana Kalkura, Chennai (Tamil Nadu, India)
„Synthesis and characterization of monometallic and core-shell nanostructures of the platinum metals“ (Oral presentation)

06/2014
Research stay (DAAD scholarship)
Columbia University New York, Working group of Prof. Dr. Simon J.L. Billinge, New York (United states of America)

09/2012
Research stay (DAAD scholarship); National Research Tomsk Polytechnic University, Working group of Prof. Dr. Yury P. Sharkeev, Tomsk (Russia)
„Synthesis and characterization of gold nanoparticles“ (Oral presentation)

Publications

M. Breisch, K. Loza, K. Pappert, A. Rostek, C. Rurainsky, K. Tschulik, M. Heggen, M. Epple, J. C. Tiller, T. A.  Schildhauer, M.  Köller, C. Sengstock, Enhanced dissolution of silver nanoparticles in a physical mixture with platinum nanoparticles based on the sacrificial anode effect, Nanotechnol. 2020, 31, 055703s (doi: 10.1088/1361-6528/ab4e48)

A. Rostek, K. Loza, M. Heggen, M. Epple, X-ray powder diffraction to analyse bimetallic core-shell nanoparticles (gold and palladium; 7-8 nm), RSC Adv. 2019, 9, 26628–26636 (doi: 10.1039/c9ra05117a)

M. Breisch, V. Grasmik, K. Loza, K. Pappert, A. Rostek, N. Ziegler, A. Ludwig, M. Heggen, M. Epple, J.C. Tiller, T.A.  Schildhauer, M. Köller, C. Sengstock, Bimetallic silver-platinum nanoparticles with combined osteo-promotive and antimicrobial activity, Nanotechnology 2019, 30, 305101 (doi: 10.1088/1361-6528/ab172b)

P.R.A.F. Garcia, K. Loza, S. Daumann, V. Grasmik, K. Pappert, A. Rostek, J. Helmlinger, O. Prymak, M. Epple, C.L.P. Oliveira, Combining small-angle X-ray scattering and X-ray powder diffraction to investigate size, shape, and crystallinity of silver, gold, and alloyed silver-gold nanoparticles, Braz. J. Phys. 2019, 49, 183-190 (doi: 10.1007/s13538-019-00642-z)

A. Rostek, M. Breisch, K. Pappert, K. Loza, M. Heggen, M. Köller, C. Sengstock, M. Epple, Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4-8 nm diameter, Beilstein J. Nanotechnol. 2018, 9, 2763-2774 (doi: 10.3762/bjnano.9.258)

A. Rostek, M. Breisch, K. Loza, P.R.A.F. Garcia, C.L.P. Oliveira, O. Prymak, M. Heggen, M. Köller, C. Sengstock, M. Epple, Wet-chemical synthesis of Pd-Au core-shell nanoparticles (8 nm): From nanostructure to biological properties, ChemistrySelect 2018, 3, 4994-5001 (doi: 10.1002/slct.201800638)

I. Schremmer, A. Brik, D.G. Weber, N. Rosenkranz, A. Rostek, K. Loza, T. Brüning, M. Epple, J. Bünger, G.A. Westphal, Chemotaxis, cytokine and chemokine release of NR8383 macrophages after exposure to amorphous silica, crystalline quartz, barium sulfate and titanium dioxide, Toxicol. Lett. 2016, 263, 68-75 (doi: 10.1016/j.toxlet.2016.08.014)

G.A. Westphal, I. Schremmer, A. Rostek, K. Loza, N. Rosenkranz, T. Brüning, M. Epple, J. Bünger, Particle-induced cell migration assay (PICMA): A new in vitro assay for inflammatory particle effects based on permanent cell lines, Toxicol. In Vitro 2015, 29, 997-1005 (doi: 10.1016./j.tiv.2015.04.005)

O. Prymak, S. Ristig, W. Meyer-Zaika, A. Rostek, L. Ruiz, J.M. Gonzalez-Calbet, M. Vallet-Regi, M. Epple, X-ray powder diffraction as a tool to investigate the ultrastructure of nanoparticles, Russ. Phys. J. 2014, 56, 1111-1115 (doi: 10.1007/s11182-014-0149-2)

A. Rostek, D. Mahl, M. Epple, Chemical composition of surface-functionalized gold nanoparticles, J. Nanopart. Res. 2011, 13, 4809-4814 (doi: 10.1007/s11051-011-0456-2)

Conferences, poster contributions, and oral presentations

25.11. – 30.11.2018       2018 MRS Fall Meeting and Exhibit, Boston (United States of America)
A. Rostek, M. Breisch, K. Loza, V. Grasmik, K. Pappert, M. Heggen, M. Köller, C. Sengstock, M. Epple: “Mono- and bimetallic nanoparticles of noble metals – The influence of the composition and nanostructure on biological effects” (oral presentation)

05.03. – 08.03.2018       26th Annual Meeting of the German Crystallographic Society (DGK), Essen (Germany)
A. Rostek, K. Loza, O. Prymak, P.R.A.F. Garcia, C.L.P. Oliveira, M. Heggen, M. Epple: “In-situ small-angle X-ray scattering (SAXS) and powder X-ray diffraction (PXRD): Complementary tools to investigate the structural behaviour and the composition of mono- and bimetallic nanoparticles” (oral presentation/poster contribution)

09.11. – 11.11.2017       Jahrestagung der Deutschen Gesellschaft für Biomaterialien, Würzburg (Germany)
A. Rostek, I. Föhring, K. Loza, A. Brik, D.G. Weber, C. Sengstock, M. Köller, T. Brüning, G. Johnen, G.A. Westphal, J. Bünger, M. Epple: “The particle-induced cell migration assay (PICMA): An in vitro tool to assess the effect of inflammatory particles” (poster contribution)

03.03. – 05.03.2014       Abschlusskolloquium des Schwerpunktprogramms “Biological Response to Nanoscale Particles” (SPP1313), Fulda (Germany)
S. Ristig, J. Helmlinger, K. Loza, A. Rostek, B. Schütze, M. Epple: “Possibilities in Synthesis and Functionalization of Inorganic Nanoparticles: Silver and Silver Chloride Nanoparticles“ (poster contribution)
B. Schütze, J. Helmlinger, K. Loza, S. Ristig, A. Rostek, M. Epple: “Possibilities in Synthesis and Functionalization of Metallic and Bimetallic Nanoparticles: Gold and Silver-Gold alloyed Nanoparticles“ (poster contribution)
A. Rostek, J. Helmlinger, K. Loza, S. Ristig, B. Schütze, M. Epple: “Survey on Analysis Tools for the Characterization of Inorganic Nanoparticles: Chemical Composition and Ligand Shell“ (poster contribution)
J. Helmlinger, K. Loza, S. Ristig, A. Rostek, B. Schütze, M. Epple: “Survey on Analysis Tools for the Characterization of Inorganic Nanoparticles: Size and Morphologie“ (poster contribution)
K. Loza, J. Helmlinger, S. Ristig, A. Rostek, B. Schütze, M. Epple, C. Sengstock, M. Köller: “Biological Action of Inorganic Nanoparticles“ (poster contribution)
A. Rostek, J. Helmlinger, K. Loza, S. Ristig, B. Schütze, M. Epple, C. Sengstock, M. Köller: “Inorganic Nanoparticles (Ag, AgCl, Au and Ag-Au alloys): Synthesis, Characterization and Cell Biological Studies“ (oral presentation)

08.09. – 12.09.2013       25th European Symposium on Biomaterials, Madrid (Spain)
A. Rostek, M. Malissek, S. Langolf, L. Treuel, C. Schmuck, M. Epple: “The influence of surface-functionalized gold nanoparticles on the enzymatic activity and structure of trypsine” (poster contribution)

01.11. – 03.11.2012       Jahrestagung der Deutschen Gesellschaft für Biomaterialien, Hamburg (Germany)
A. Rostek, J. Diendorf, S. Ristig, C. Greulich, M. Köller, M. Epple: “Silber-, Gold- und Silber-Gold-Nanopartikel: Vergleichende zellbiologische Untersuchungen” (poster contribution)

11.09. – 15.09.2011       International Conference on Biological Response to Nanoscale Particles, Essen (Germany)
A. Rostek, D. Mahl, M. Epple: “Chemical composition of surface-functionalized gold nanoparticles” (poster contribution)