| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Graczykowski, Bartlomiej
Adam Mickiewicz University in Poznań
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Size-dependent nanoscale soldering of polystyrene colloidal crystals by supercritical fluidscitations
- 2023Control of Intermolecular Interactions toward the Production of Free-Standing Interfacial Polydopamine Filmscitations
- 2022Optomechanical Hot-Spots in Metallic Nanorod–Polymer Nanocompositescitations
- 2022Optomechanical Hot-Spots in Metallic Nanorod–Polymer Nanocompositescitations
- 2021Study of nanostructured ultra-refractory Tantalum-Hafnium-Carbide electrodes with wide electrochemical stability windowcitations
- 2021Direct visualization and characterization of interfacially adsorbed polymer atop nanoparticles and within nanocompositescitations
- 2020Ultrathin polydopamine films with phospholipid nanodiscs containing a glycophorin a domaincitations
- 2020Frequency-domain study of nonthermal gigahertz phonons reveals Fano coupling to charge carrierscitations
- 2020Thermal conductivity and air-mediated losses in periodic porous silicon membranes at high temperatures
- 2020Ultrathin Polydopamine Films with Phospholipid Nanodiscs Containing a Glycophorin A Domaincitations
- 2018Well-defined metal-polymer nanocomposites : the interplay of structure, thermoplasmonics, and elastic mechanical propertiescitations
- 2016Thermal conductivity of MoS2 polycrystalline nanomembranes
Places of action
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article
Size-dependent nanoscale soldering of polystyrene colloidal crystals by supercritical fluids
Abstract
HypothesisPolymer particles self-assembled into colloidal crystals have exciting applications in photonics, phononics, templates for nanolithography, and coatings. Cold soldering utilizing polymer plasticization by supercritical fluids enables a novel, low-cost, low-effort, chemical-free means for uniform mechanical strengthening of fragile polymer colloidal crystals at moderate temperatures. Here, we aim to elucidate the role of particle size and gas-specific response for the most efficient soldering, exploring the full potential of this method.ExperimentsWe investigate the elastic properties of polystyrene colloidal crystals made of nanoparticles with different diameters (143 to 830 nm) upon treatment with supercritical Ar and He at room temperature. By employing Brillouin light scattering, we quantify the effect of nanoparticle size on the strengthening of interparticle contacts, evaluating the permanent change in the effective elastic modulus upon cold soldering.FindingsThe relative change in the effective elastic modulus reveals nonmonotonic dependence on the particle size with the most efficient soldering for mid-sized nanoparticles (about 610 nm diameter). We attribute this behavior to the crucial role of intrinsic fabrication impurities, which reduces the nanoparticles’ free surface exposed to plasticization by supercritical fluids. Supercritical Ar, a good solvent for polystyrene, enabled effective soldering of nanoparticles, whereas high-pressure He treatment is entirely reversible.