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4 article(s) from Sadowski, Wojciech

Tailoring Ag–Pt nanoalloys through solid-state dewetting: structural and optical insights

Marcin Łapiński,
Piotr Okoczuk,
Blaž Grobiša,
Ewa Pawlikowska,
Amelia Rozwadowska,
Wojciech Sadowski and
Barbara Kościelska

Beilstein J. Nanotechnol. 2026, 17, 748–759, doi:10.3762/bjnano.17.52

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Figure 1: AFM image and profile of the as-deposited 4 nm Ag and 4 nm Pt bilayer.

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Figure 2: a) SEM image of nanostructures obtained by annealing at 650 °C for 15 min. 4 nm Ag and 4 nm Pt bila...

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Figure 3: SEM images of nanostructures obtained by annealing of 5 nm Ag and 5 nm Pt bilayer for 15 min. at: a...

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Figure 4: SEM pictures of nanostructures and calculated island diameter distribution resulting from annealing...

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Figure 5: XPS survey and the high resolution spectra of Pt 4f, Ag 3d and Ag, and 3d Ag Auger line regions of ...

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Figure 6: Transmittance spectra of Ag–Pt nanostructures formed by annealing at 650 °C for 15 min, bilayers wi...

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Figure 7: a) Transmittance spectra of Ag–Pt nanostructures formed by annealing at 650 °C for 15 min, bilayers...

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Figure 8: HR-TEM image of a cross-section of a nanoisland obtained by annealing at 650 °C for 15 min, bilayer...

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Figure 9: Detailed EDS analysis of the cross-section of the nanoisland obtained by annealing at 650 °C for 15...

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Figure 10: a) Schematic illustration of the fabrication process of alloy nanostructures. b) Comparison of the ...

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Full Research Paper

Published 10 Jun 2026

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Plasmon-enhanced photoluminescence from TiO₂ and TeO₂ thin films doped by Eu³⁺ for optoelectronic applications

Marcin Łapiński,
Jakub Czubek,
Katarzyna Drozdowska,
Anna Synak,
Wojciech Sadowski and
Barbara Kościelska

Beilstein J. Nanotechnol. 2021, 12, 1271–1278, doi:10.3762/bjnano.12.94

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Figure 1: Schematic view of the prepared structures.

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Figure 2: (a) SEM image of gold plasmonic platform, (b) HRTEM image of the cross section of a single gold nan...

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Figure 3: Transmittance spectrum of a gold plasmonic platform.

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Figure 4: XPS spectra of Ti2p and Eu4d spectra of TiO₂:Eu luminescent film.

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Figure 5: UV–vis spectra of a TiO₂:Eu film and TiO₂:Eu films deposited on the plasmonic platform without a di...

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Figure 6: Excitation and emission spectra of a TiO₂:Eu film and TiO₂:Eu films deposited on the plasmonic plat...

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Figure 7: XPS spectra of Te 3d and Eu 4d regions of the TeO₂:Eu luminescent layer.

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Figure 8: Depth profile of the chemical composition of TeO₂:Eu thin film.

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Figure 9: UV–vis spectra of a TeO₂:Eu film and TeO₂:Eu films deposited on the plasmonic platform without a di...

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Figure 10: Excitation and emission spectra of TeO:Eu-based structures.

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Figure 11: Comparision of the maxmimum of ecxitation and emission peaks for TiO₂:Eu and TeO₂:Eu thin films, an...

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Figure 12: UV–vis spectra of a TeO₂:Eu film and TeO₂:Eu films deposited on a plasmonic platform with dielectri...

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Figure 13: Excitation and emission spectra of a TeO₂:Eu film and TeO₂:Eu films deposited on a plasmonic platfo...

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Full Research Paper

Published 22 Nov 2021

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Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions

Robert Kozioł,
Marcin Łapiński,
Paweł Syty,
Damian Koszelow,
Wojciech Sadowski,
Józef E. Sienkiewicz and
Barbara Kościelska

Beilstein J. Nanotechnol. 2020, 11, 494–507, doi:10.3762/bjnano.11.40

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Figure 1: Side view of a part of the simulation setup, illustrating the shape of the Ag nanoparticles, modell...

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Figure 2: Top view of the simulation setup.

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Figure 3: SEM images of the films after annealing at 250 °C for 15 min. Initial film thickness was: (a) 1 nm,...

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Figure 4: SEM images of the films after annealing at 550 °C for 15 min. Initial film thickness was: (a) 1 nm,...

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Figure 5: The dependence of the island diameter on the thickness of the initial film, calculated for Ag films...

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Figure 6: SEM images of a 2.8 nm thick film, annealed at a constant temperature of 550 °C for different perio...

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Figure 7: SEM images of a 2.8 nm thick film, annealed for a constant time 15 min at different temperatures: (...

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Figure 8: (a) HRTEM image of a cross section of a nanoisland formed from a 3 nm thick film, annealed at 550 °...

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Figure 9: Absorbance of nanostructures formed from thin films with different thickness, annealed at (a) 250 °...

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Figure 10: Calculated scattering efficiencies (absorption, scattering and extinction) in air obtained from Mie...

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Figure 11: Absorbance of nanostructures formed from 2.8 nm thick films (a) annealed at 100, 200, 300, 400, 500...

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Figure 12: (a) Ag 3d and (b) Ag 4d XPS spectra of bulk Ag and Ag nanostructures grown after annealing of 2 nm ...

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Figure 13: a) Calculated intensity distribution of the electromagnetic field integrated on the plane where nan...

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Figure 14: Calculated amplitudes of the components of the electromagnetic field in the plane where the nanopar...

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Figure 15: Calculated amplitudes of the components of the electromagnetic field as a function of the time, at ...

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Figure 16: Calculated absorbance log(Φ_i/Φ_t), where Φ_i and Φ_t are incident and transmitted flux, respectively, ...

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Figure 17: Positions of a) the first and b) the second absorbance maxima (corresponding to the quadrupole and ...

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Full Research Paper

Published 25 Mar 2020

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Au–Si plasmonic platforms: synthesis, structure and FDTD simulations

Anna Gapska,
Marcin Łapiński,
Paweł Syty,
Wojciech Sadowski,
Józef E. Sienkiewicz and
Barbara Kościelska

Beilstein J. Nanotechnol. 2018, 9, 2599–2608, doi:10.3762/bjnano.9.241

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Figure 1: Scheme of the formation of the gold nanoislands.

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Figure 2: SEM images of 2.8 nm Au films on a Si(111) substrate: a) as prepared, annealed at b) 150 °C, c) 200...

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Figure 3: SEM images of 2.8 nm Au films on a Si(111) substrate annealed at a) 450 °C, b) 550 °C, c) 600 °C fo...

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Figure 4: SEM images of Au films of different thicknesses on a Si(111) substrate annealed at 550 °C for 15 mi...

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Figure 5: a) Number of nanoparticles and b) average diameter of nanoparticles as function of the Au film thic...

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Figure 6: Left: AFM image of a 2.8 nm Au film on a Si(111) substrate annealed at 550 °C for 15 min; right: cr...

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Figure 7: XRD result of a 2.8 nm Au film annealed at 550 °C for 15 min and an as-prepared 2.8 nm Au film on S...

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Figure 8: XPS (Au region) results for the 2.8 nm Au thin film on a Si(111) substrate annealed at 550 °C for 1...

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Figure 9: XPS result (Si region) for the 2.8 nm Au film on a Si(111) substrate annealed at 550 °C for 15 min.

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Figure 10: Absorbance spectra recorded for a 2.8 nm Au film on a Si(111) substrate annealed at 550 °C for 15 m...

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Figure 11: SEM image of the gold nanoislands on the silicon substrate (sample 2.8 nm Au film on Si(111) substr...

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Figure 12: Setup for the FDTD and FDTD/DFT simulations. Left: view from the bottom, zx-plane; yellow rectangle...

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Figure 13: Calculated intensity distribution of the electromagnetic field with unpolarized incident light of a...

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Figure 14: Calculated amplitudes of the components of the electromagnetic field with unpolarized incident ligh...

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Figure 15: Calculated absorbance (as log(I_o/I_r), where I_o is an incident flux, and I_r – reflected flux), as th...

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Full Research Paper

Published 28 Sep 2018

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Tailoring Ag–Pt nanoalloys through solid-state dewetting: structural and optical insights

Plasmon-enhanced photoluminescence from TiO2 and TeO2 thin films doped by Eu3+ for optoelectronic applications

Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions

Au–Si plasmonic platforms: synthesis, structure and FDTD simulations

Plasmon-enhanced photoluminescence from TiO₂ and TeO₂ thin films doped by Eu³⁺ for optoelectronic applications