Long range electrostatic forces in ionic liquids by Gebbie, M, Smith, A, Dobbs, H, Lee, A, Warr, G, Banquy, X, Valtiner, M, Rutland, M, Israelachvili, J, Perkin, S, Atkin, R

“…Ionic liquids are pure salts that are liquid under ambient conditions. …”

Self-assembly in the electrical double layer of ionic liquids. by Perkin, S, Crowhurst, L, Niedermeyer, H, Welton, T, Smith, A, Gosvami, N

“…We have studied the structure of two ionic liquids confined between negatively charged mica sheets. …”

Quantized friction across ionic liquid thin films. by Smith, A, Lovelock, K, Gosvami, N, Welton, T, Perkin, S

“…Ionic liquids - salts in the liquid state under ambient conditions - are of great interest as precision lubricants. …”

Monolayer to Bilayer Structural Transition in Confined Pyrrolidinium-Based Ionic Liquids by Smith, A, Lovelock, K, Gosvami, N, Licence, P, Dolan, A, Welton, T, Perkin, S

“…Ionic liquids can be intricately nanostructured in the bulk and at interfaces resulting from a delicate interplay between interionic and surface forces. …”

Monolayer and bilayer structures in ionic liquids and their mixtures confined to nano-films. by Smith, A, Lovelock, K, Perkin, S

“…We discuss the driving forces for these self-assembly effects, and the contrasting behaviour of the imidazolium and pyrrolidinium-type ionic liquids.…”

Switching the structural force in ionic liquid–solvent mixtures by varying composition by Perkin, S, Lee, A, Smith, A

“…Here, we study the structural forces in a mixture of ionic liquid and solvent that is miscible in all proportions at room temperature. …”

Interfacial structure and structural forces in mixtures of ionic liquid with a polar solvent by Coles, S, Smith, A, Fedorov, M, Hausen, F, Perkin, S

“…Many applications of ionic liquids involve their mixtures with neutral molecular solvents. …”

Molecular Friction Mechanisms Across Nanofilms of a Bilayer-Forming Ionic Liquid by Smith, A, Parkes, M, Perkin, S

“…With this, we uncover molecular mechanistic details relevant to boundary lubrication in general and the development of ionic liquid lubricants in particular. (Figure Presented).…”

Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. by Griffin, L, Browning, K, Clarke, S, Smith, A, Perkin, S, Skoda, M, Norman, S

“…The layering of ionic liquids close to flat, charged interfaces has been identified previously through theoretical and some experimental measurements. …”

Nanostructure, self-assembly and friction in confined liquids by Smith, A

“…</p> <p>Measurements made with ionic liquids of varying alkyl chain length reveal a dramatic cross-over in the interfacial layering structure, from alternating cation- and anion-enriched monolayers for ionic liquids with short alkyl chains, to bilayer formation for more amphiphilic ions. …”

The electrostatic screening length in concentrated electrolytes increases with concentration by Smith, A, Lee, A, Perkin, S

“…The screening lengths for all electrolytes studied—including aqueous NaCl solutions, ionic liquids diluted with propylene carbonate, and pure ionic liquids—collapse onto a single curve when scaled by the dielectric constant. …”

Scaling analysis of the screening length in concentrated electrolytes by Lee, A, Perez-Martinez, C, Smith, A, Perkin, S

“…Recent measurements reveal that, contrary to the conventional wisdom given by classic Poisson-Boltzmann theory, the decay length increases with ion concentration for concentrated electrolytes and can be an order of magnitude larger than the ion diameter in ionic liquids. We derive a simple scaling theory that explains this anomalous dependence of the decay length on ion concentration. …”