Cotygodniowe seminaria

Najbliższe seminarium
  • 30.05.2023 15:30
    mgr Partycja Twardawa | IFUJ
    Efekty miesięcznej terapii dapagliflozyną w cukrzycy typu I: badanie nanomechanicznych własności erytrocytów / Effects of dapagliflozin therapy in type I diabetes mellitus: nanomechanical studies of erythrocyte properties
    Miejsce: B-1-02 (hybrid)

Przyszłe seminaria
  • 06.06.2023 15:30
    mgr Sara Seweryn | IFUJ
    Miejsce: B-1-02 (hybrid)
  • 20.06.2023 15:30
    mgr Agata Kubisiak | IFUJ
    Odpowiedź mechaniczna komórek nabłonka i śródbłonka płucnego na działanie różnych wariantów wirusa SARS-CoV-2
    Miejsce: B-1-02 (hybrid)

Przeszłe seminaria
  • 23.05.2023 15:30
    mgr Irena Padniuk (Izydorczyk) | IFUJ
    Wpływ powierzchni Au(111) na strukturę elektronową analogów acenów.
    Miejsce: B-1-02 (hybrid)
  • 16.05.2023 15:30
    mgr Daria Cegiełka | IFUJ
    Modyfikacja warstw N-heterocyklicznych karbenów za pomocą wiązki elektronów
    Miejsce: B-1-02 (hybrid)
  • 09.05.2023 15:30
    mgr Michał Czaja | IFUJ
    Zastosowanie nanospektroskopii w badaniu separacji faz lipidowych
    Miejsce: B-1-02 (hybrid)
  • 25.04.2023 15:30
    dr Michał Kański | IFUJ
    Wykorzystanie symulacji komputerowych do badania mechanizmu rozpylania przy pomocy klastrów wody
    Miejsce: B-1-02 (hybrid)
  • 18.04.2023 15:30
    mgr Lutosława Mikowska | IFUJ
    Magnetyczny Rezonas Jądrowy dla 129Xe w fazie skondensowanej
    Miejsce: B-1-02 (hybrid)
  • 28.03.2023 15:30
    Dr. Emiliano Cortes | Nanoinstitute Munich, University of Munich
    Artificial Materials for Sunlight-to-Hydrogen Conversion
    Miejsce: B-1-02/MSTeams

    Low-cost and large-scale hydrogen production is one of the most advanced routes to quickly solve our imminent energy collapse. Here, I will show one-step further in this direction by utilizing plasmonic materials. Plasmonic nanoparticles can drive chemical reactions powered by sunlight. These processes involve the excitation of surface plasmon resonances (SPR) and the subsequent energy transfer to adsorbed molecular species. Hybrid nanomaterials, combining plasmonic and catalytic components, have recently gained interest for their potential use in this sunlight-to-chemical energy conversion process. However, a deep understanding of the structure–performance that maximizes the use of the incoming energy (i.e. photons) remains elusive. In this talk, I will present our recent results aiming to optimize the antenna-reactor (plasmonic-catalytic) configuration for hydrogen production under sunlight illumination conditions. As such, I will introduce a new concept of 2D artificial reactors that utilizes all incoming photons and at the same time solve the long-standing problem of aggregation for catalysts in solution. I will also touch upon other very recent results from my group around these topics [1-8]. References 1. S Ezendam, et al., ACS Energy Letters, 7, 778-815 (2022) 2. E. Cortes, et al., Nat. Rev. Chem., 6, 259–274 (2022) 3. M. Herran, et al., Adv. Funct. Mat., 2203418 (2022) 4. E. Cortés, Nature, 614, 230-232 (2023) 5. E. Cortés, et al., Chem. Rev. 122, 19, 15082–15176 (2022) 6. L Hüttenhofer, et al., Adv. Energy Mat., 46, 11, 2102877 (2021) 7. A. Stefancu, et al., ACS Nano 17 (3), 3119–3127 (2023) 8. M. Herran, F. Schulz, E. Cortes, EP22186109 patent in process (2023)

  • 21.03.2023 15:30
    Dr. Ronen Berkovich | Ben-Gurion University of the Negev
    Single molecule force spectroscopy reveals history dependent kinetics (aging) in sequential unfolding of poly-proteins under tension
    Miejsce: B-1-02 (hybrid)

    Comprised from proteins arrayed in tandem, poly-proteins form a unique arrangement that enables their specific physiological function under mechanical loads through partial unfolding and extension (as in muscle, cellular signalling etc.). Probed with single molecule force spectroscopy (SMFS), sequential unfolding-times of N proteins within a poly-protein are considered as being independent of each other and identically distributed (iid). According to this assumption, the unfolding kinetics of a poly-protein made of N proteins, is equivalent to the unfolding kinetics of such N individual proteins. As such, they are expected to follow an exponential distribution, however, they are reported to display nonexponential distribution behavior. So far, various interpretations and statistical means to explain this deviation have been suggested, all sharing the iid underlying assumption. Here we demonstrate that the introduction of an external tension, as an unfolding agent, introduces correlations between the sequential events during the unfolding along the poly-protein. This observation confronts the iid assumption. With the use of continuous time random walk approach, we show that poly-protein unfolding exhibits anomalous subdiffusive transport, which alludes to aging. Put together with free-energy landscape reconstruction of the whole unfolding polyprotein, we provide physical explanation for this nontrivial behavior, according to which the elongating chain with each unfolding event intervenes with the unfolding probabilities, as the chain stiffness decreases. This scenario is further explored by investigating the sequential unfolding at decreasing forces. Using statistical order analysis, we demonstrate that even under the lowest load, the sequential unfolding cannot be considered as iid, in accord with the power law distribution. The free energy analysis revealed the contribution of the unfolded segments elasticity that scales with the force on the overall one-dimensional contour of the energy landscape, but more importantly, it discloses the hierarchy within the activation barriers during sequential unfolding that account for the observed nonexponentiality.

  • 28.02.2023 15:15
    mgr Sara Severyn | IFUJ
    W poszukiwaniu tratw lipidowych/In search of lipid rafts
    Miejsce: MSTeams (zdalne)
  • 21.02.2023 15:15
    Dr. Natalia Tovstyuk | Lviv Polytechnic National University
    Layer crystals, semiconductors and dielectrics. Their peculiarities and application.
    Miejsce: B-1-02 (hybrid)
  • 24.01.2023 15:15
    mgr Irena Izydorczyk | IFUJ
    Analogi acenów w skaningowej mikroskopii i spektroskopii tunelowej
    Miejsce: B-1-02 (hybrid)