Seminaria

Dnia 2025-06-03 o godzinie 13:15 w Sali 2011 Wydziału Fizyki UwB, dr hab. Bartłomiej Graczykowski, prof. UAM, z Wydziału Fizyki UAM wygłosi wykład pt:

„Mechanical and thermal engineering of functional nanomembranes”

Serdecznie zapraszamy

Andrzej Maziewski

Jerzy Przeszowski

„ Mechanical and thermal engineering of functional nanomembranes”

Dr hab. Bartłomiej Graczykowski, Prof. UAM

Faculty of Physics and Astronomy, Adam Mickiewicz University in Poznan

Abstract: Continuous miniaturization of electronics, increasing computing power and data transmission speed, an alternative to silicon-based electronics, and obtaining new sources of clean energy are among the most vital challenges in physics, chemistry, and material engineering. The search for new materials, structures, and composites that can meet these requirements has contributed to the spectacular development of nanoscience and nanotechnology in the last two decades. What is essential, the search for new nanomaterials with application potential is often a compromise between excellent properties and incurred energy and environmental costs. In this talk, I will present the results of experimental research focused on such topics as (i) nature-inspired membranes for ultra-fast light-to-motion conversion^1–3, (ii) silicon thermal diode⁴, (iii) elastic size effect in MoSe2⁵, (iv) GHz signal filtering in 2D Phononic Crystals⁶ and (v) mechanical reinforcement of colloidal crystals by a cold soldering process based on polymer plasticization using supercritical fluids^7,8.

References:

1. Vasileiadis, T. et al. Fast Light-Driven Motion of Polydopamine Nanomembranes. Nano Lett. 22, 578–585 (2022).

2. Krysztofik, A. et al. Fast Photoactuation and Environmental Response of Humidity-Sensitive pDAP-Silicon Nanocantilevers. Advanced Materials 36, 2403114 (2024).

3. Krysztofik, A. et al. Multi-responsive poly-catecholamine nanomembranes. Nanoscale (2024) doi:10.1039/D4NR01050G.

4. Kasprzak, M. et al. High-temperature silicon thermal diode and switch. Nano Energy 78, 105261 (2020).

5. Babacic, V. et al. Thickness-Dependent Elastic Softening of Few-Layer Free-Standing MoSe2. Advanced Materials 33, 2008614 (2021).

6. Graczykowski, B., Vogel, N., Bley, K., Butt, H.-J. & Fytas, G. Multiband Hypersound Filtering in Two-Dimensional Colloidal Crystals: Adhesion, Resonances, and Periodicity. Nano Lett. acs.nanolett.9b05101 (2020) doi:10.1021/acs.nanolett.9b05101.

7. Varghese, J. et al. Size-dependent nanoscale soldering of polystyrene colloidal crystals by supercritical fluids. Journal of Colloid and Interface Science 633, 314–322 (2023).

8. Babacic, V. et al. Mechanical reinforcement of polymer colloidal crystals by supercritical fluids. Journal of Colloid and Interface Science 579, 786–793 (2020).