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Nanoscale wetting of viruses by ionic liquids

Alonso, José M. and Ondarçuhu, Thierry and Parrens, Coralie and Górzny, Marcin and Bittner, Alexander M. Nanoscale wetting of viruses by ionic liquids. (2019) Journal of Molecular Liquids, 276. 667-674. ISSN 0167-7322

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Official URL: https://doi.org/10.1016/j.molliq.2018.12.022

Abstract

One of the most important effects of water on earth is that surfaces in air adsorb small amounts ofwater, usually in the form of a thin film. Real surfaces, especially the rather soft biomolecular surfaces, are covered by highly curved micro- and nanostructures, which induce more complex wetting geometries, such as films, droplets, and filaments. This effect, though ubiquitous, has not yet been investigated on the nanoscale. We have approached the situation by combining a soft proteinous surface, made up from very resilient tubular plant viruses, with ionic liquids. Their low vapor pressure allowed us to observe nanoscale wetting patterns at very high spatial resolution with AFM (atomic force microscopy), SEM (scanning electron microscopy) and STEM (scanning transmission electronmicroscopy).We found droplets, filaments and layers,withmeniscus diameters down to below10 nm. All geometries are comparablewith results obtained on the microscale, and with standard macroscale wetting models.

Item Type:Article
HAL Id:hal-02048304
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > CIC nanoGUNE Consolider (SPAIN)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > IKERBASQUE (SPAIN)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Aperam (LUXEMBOURG)
Other partners > i+Med (SPAIN)
Laboratory name:
Funders:
Ministerio de Economía y Empresa - MINECO (SPAIN) - FEI Company (THE NETHERLANDS) - Basque Government
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Deposited On:25 Feb 2019 13:41

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