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Ion specificity and related Hofmeister effects, ubiquitous in aqueous systems, can have spectacular consequences in hydrated clays, where ion-specific nanoscale surface forces can determine large scale cohesive, swelling and shrinkage…

Soft Condensed Matter · Physics 2022-12-02 Francis Dragulet , Abhay Goyal , Katerina Ioannidou , Roland J. -M. Pellenq , Emanuela Del Gado

We characterize the role of electrostatic fluctuations on the charge selectivity of cylindrical nanopores confining electrolyte mixtures. To this end, we develop an extended one-loop theory that can account for correlation effects induced…

Soft Condensed Matter · Physics 2014-03-05 Sahin Buyukdagli , T. Ala-Nissila

The number of precise conductance measurements in nanopores is quickly growing. In order to clarify the dominant mechanisms at play and facilitate the characterization of such systems for which there is still no clear consensus, we propose…

Soft Condensed Matter · Physics 2018-07-25 Manoel Manghi , John Palmeri , Khadija Yazda , Francois Henn , Vincent Jourdain

Electrolytes play an important role in a plethora of applications ranging from energy storage to biomaterials. Notwithstanding this, the structure of concentrated electrolytes remains enigmatic. Many theoretical approaches attempt to model…

Soft Condensed Matter · Physics 2021-04-14 Penelope Jones , Fabian Coupette , Andreas Härtel , Alpha A. Lee

Reactions at solid-water interfaces play a foundational role in water treatment systems, catalysis, chemical separations, and in predicting chemical fate and transport in the environment. Over the last century, experimental measurements and…

Chemical Physics · Physics 2022-12-14 Anastasia G. Ilgen , Kevin Leung , Louise J. Criscenti , Jeffery A. Greathouse

Fundamental studies of the effect of specific ions on hydrophobic interactions are driven by the need to understand phenomena such as hydrophobically driven self-assembly or protein folding. Using beta-peptide-inspired nano-rods, we…

Chemical Physics · Physics 2016-08-08 Kai Huang , Sebastian Gast , C. Derek Ma , Nicholas L. Abbott , Izabela Szlufarska

The structure and transport of electrolytes in nanoscale channels are known to be affected by the electronic properties of the confining walls. This influence is particularly pronounced in quasi-one-dimensional nanotubes, where the high…

Mesoscale and Nanoscale Physics · Physics 2026-05-21 Peter Gispert , Nikita Kavokine

Water plays a crucial role in geological, biological, and technological processes. Nanoscale water confinement occurs in many of these settings, including sedimentary rocks, water channel proteins, and applications like desalination and…

A field theoretic variational approach is introduced to study ion penetration into water-filled cylindrical nanopores in equilibrium with a bulk reservoir. It is shown that (i) an ion located in a neutral pore undergoes two opposing…

Soft Condensed Matter · Physics 2015-05-19 Sahin Buyukdagli , Manoel Manghi , John Palmeri

Interfacial interactions significantly alter the fundamental properties of water confined in mesoporous structures, with crucial implications for geological, physicochemical, and biological processes. Herein, we focused on the effect of…

Ionic liquids offer unique bulk and interfacial characteristics as battery electrolytes. Our continuum approach naturally describes the electrolyte on a macroscale. An integral formulation for the molecular repulsion,which can be…

Chemical Physics · Physics 2022-11-30 Max Schammer , Arnulf Latz , Birger Horstmann

Using non-equilibrium molecular dynamics simulations and a coarse grained model of ionic liquids, we have investigated the impact that the shape and the intramolecular charge distribution of the ions have on the electrotuneable friction…

Materials Science · Physics 2015-08-25 O. Y. Fajardo , Fernando Bresme , Alexei A. Kornyshev , Michael Urbakh

The distribution of ions at the air/water interface plays a decisive role in many natural processes. It is generally understood that polarizable ions with low charge density are surface-active, implying they sit on top of the water surface.…

Chemical Physics · Physics 2022-10-05 Yair Litman , Kuo-Yang Chiang , Takakazu Seki , Yuki Nagata , Mischa Bonn

We use molecular dynamics simulations of the primitive model of electrolytes to study the ionic structure in aqueous monovalent electrolyte solutions confined by charged planar interfaces over a wide range of electrolyte concentration,…

Soft Condensed Matter · Physics 2020-09-08 Nasim Anousheh , Francisco J. Solis , Vikram Jadhao

Nanoporous carbon-based supercapacitors store electricity through adsorption of ions from the electrolyte at the surface of the electrodes. Room temperature ionic liquids, which show the largest ion concentrations among organic liquid…

The comprehensive depiction of the many-body effects governing nanoconfined electrolytes is an essential step for the conception of nanofluidic devices with optimized performance. By incorporating self-consistently multivalent charges into…

Soft Condensed Matter · Physics 2020-12-14 Sahin Buyukdagli

We develop a theory of charge storage in ultra-narrow slit-like pores of nano\-structured electrodes. Our analysis is based on the Blume-Capel model in external field, which we solve analytically on a Bethe lattice. The obtained solutions…

Soft Condensed Matter · Physics 2020-01-08 Maxym Dudka , Svyatoslav Kondrat , Olivier Bénichou , Alexei A. Kornyshev , Gleb Oshanin

When an ionic liquid adsorbs onto a porous electrode, its ionic arrangement is deeply modified due to a screening of the Coulombic interactions by the metallic surface and by the confinement imposed upon it by the electrode's morphology. In…

Ion transport in highly-confined space is important to various applications, such as biosensing and seawater desalination with nanopores. All-atom molecular dynamics simulations are conducted to investigate the transport of Na$^+$ and…

Mesoscale and Nanoscale Physics · Physics 2019-07-30 Zhongwu Li , Yinghua Qiu , Yan Zhang , Min Yue , Yunfei Chen

We report a theoretical study of ion size effect on various properties in a soft nanochannel with pH-dependent charge density. We develop a free energy based mean-field theory taking into account ion size as well as pH-dependence of charged…

Soft Condensed Matter · Physics 2022-02-11 Jun-Sik Sin , Un-Hyok Kim