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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 69: Focus: Fundamentals of molecular liquids, ionic liquids and mixtures II
CPP 69.3: Vortrag
Mittwoch, 18. März 2020, 15:45–16:00, ZEU 222
Molecular resolution force probe studies of confined molecular liquids — •Hsiu-Wei Cheng1, Markus Mezger2, and Markus Valtiner1 — 1TU Wien, Applied Physics, Vienna, AT — 2MPI f. Polymer Research, Mainz, DE
Being able to probe structures and ion mobility of molecular liquids in nanometer confined cavities/pores is central for a fundamental understanding and steering of various processes. We will show how force probe experiments can be utilized for studying interfacial physics of molecular fluids confined at solid/liquid/solid interfaces. The talk will discuss recent technological achievements, and we will illustrate how micro-to-nano and ultimately subnanometer confinement can be achieved and probed using the Surface Forces Apparatus. Here, we will further discuss how high resolution AFM imaging and X-ray probes can complement the surface forces apparatus to reveal structural and dynamic information of ionic liquids and aqueous electrolytes, as well as their mixtures, at surfaces, and in confinement between two solid surfaces. We will also discuss how molecular interactions drive structural arrangement of liquids during electrochemical polarization of surfaces and interfaces.