This book presents a collection of selected reviews from PLMMP 2018 that address modern problems in the fields of liquids, solutions and confined systems, critical phenomena, as well as colloidal and biological systems. The papers focus on state-of-the-art developments in the contemporary physics of liquid matter, and are divided into four parts: (i) water and water systems, (ii) physicalchemical properties of liquid systems, (iii) aggregation in liquid systems, and (iv) biological aspects of liquid systems, irradiation influences on liquid systems. Taken together, they cover the latest developments in the broader field of liquid states, including interdisciplinary problems.

A Two-State Picture of Water and the Funnel of Life.- Current problems in the quasi-elastic incoherent neutron scattering and the collective drift of molecules.- Microscopic study of solid/fluid interface with Molecular Dynamics.- Oligomeric and Polymeric Ionic Liquids: Engineering Architecture and Morphology.- Vibrational spectroscopy applied to solution and metal/solution interface chemistry studies.- Organization of Nano-disks of Laponite® in Soft Colloidal Systems.- The techniques of surface alignment of liquid crystals.- Small-Angle Scattering in Structural Research of Nanodiamond Dispersions.- Electron structure and optical properties of conjugated systems in solutions.- Kinetics of cluster growth in fullerene solutions of different polarity.- Interactions of Heavy Ions with DNA and Radiative Aspects in Physics of Liquid Matter.- Radiative Aspects in Physics of Liquid Matter: Stable Magnetic Isotopes as New Trend in Anti-Radiation Defense.- On the mechanism of the radiation influence upon the structure and thermodynamic properties of water.