Bubbles enable volumetric negative compressibility in metastable elastocapillary systems.

Autor: Caprini D; Center for Life Nano- & Neuro-Science, Istituto Italiano di Tecnologia, Viale Regina Elena 291, Rome, Italy., Battista F; Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Via Eudossiana 18, Rome, Italy., Zajdel P; A. Chełkowski Institute of Physics, University of Silesia, ul 75 Pułku Piechoty 1, Chorzów, Poland., Di Muccio G; Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Via Eudossiana 18, Rome, Italy., Guardiani C; Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Via Eudossiana 18, Rome, Italy., Trump B; Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, USA., Carter M; Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, USA., Yakovenko AA; X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, USA., Amayuelas E; Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, Vitoria-Gasteiz, Spain., Bartolomé L; Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, Vitoria-Gasteiz, Spain., Meloni S; Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Luigi Borsari 46, Ferrara, Italy. simone.meloni@unife.it., Grosu Y; Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, Vitoria-Gasteiz, Spain. ygrosu@cicenergigune.com.; Institute of Chemistry, University of Silesia, Katowice, Poland. ygrosu@cicenergigune.com., Casciola CM; Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Via Eudossiana 18, Rome, Italy. carlomassimo.casciola@uniroma1.it., Giacomello A; Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Via Eudossiana 18, Rome, Italy. alberto.giacomello@uniroma1.it.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Jun 13; Vol. 15 (1), pp. 5076. Date of Electronic Publication: 2024 Jun 13.
DOI: 10.1038/s41467-024-49136-w
Abstrakt: Although coveted in applications, few materials expand when subject to compression or contract under decompression, i.e., exhibit negative compressibility. A key step to achieve such counterintuitive behaviour is the destabilisations of (meta)stable equilibria of the constituents. Here, we propose a simple strategy to obtain negative compressibility exploiting capillary forces both to precompress the elastic material and to release such precompression by a threshold phenomenon - the reversible formation of a bubble in a hydrophobic flexible cavity. We demonstrate that the solid part of such metastable elastocapillary systems displays negative compressibility across different scales: hydrophobic microporous materials, proteins, and millimetre-sized laminae. This concept is applicable to fields such as porous materials, biomolecules, sensors and may be easily extended to create unexpected material susceptibilities.
(© 2024. The Author(s).)
Databáze: MEDLINE
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