Emergent structures and dynamics in two-dimensional mixtures

International Conference and Exhibition on Mesoscopic & Condensed Matter Physics

June 22-24, 2015 Boston, USA

Alokmay Datta

Saha Institute of Nuclear Physics, India

Posters-Accepted Abstracts: J Material Sci Eng

Abstract :

The strong density fluctuations present in lower dimensional systems make two-dimensional structures fundamentally unstable and give rise to distinct long term dynamics at progressively larger length scales. In mixtures this finds expression in emergent two-dimensional patterns created from bi-continuous co-existence of the partially de-mixed components. These patterns can be stabilized or can be made to pass from a periodic (or quasi-periodic) phase to an aperiodic or chaotic phase by tuning suitable �field� or �molecular� parameters, thus opening up new areas in the study of self-organization with applications in soft matter science, nanosciene, biophysics, molecular electronics, and nanotechnology. Here we shall be discussing our results pertaining to the above for monomolecular layers of amphiphile-nanoparticle mixtures and drug-lipid mixtures on water surface studied through macroscopic and microscopic techniques on one hand and molecular dynamics simulation on the other. Along with the emergent structures self-organized through de-mixing, we shall also look at some of their mechanical and optical properties.

Biography :

Alokmay Datta is a Senior Professor and Head, Surface Physics and Materials Science Division, at Saha Institute of Nuclear Physics. He did his PhD in Physics in 1989 from Calcutta University. Besides being a NSF Postdoctoral Fellow in Northwestern University, USA, he has been a JSPS Visiting Professor in Kyoto University, Japan and a MATISSE Visiting Professor in Université Pierre et Marie Curie, France. He has more than 90 papers in international refereed journals. He is a recipient of Materials Scientist Medal from Materials Research Society of India. His areas of interest are soft materials, nano-soft interfaces and nano-bio interfaces.

Email: alokmay.datta@saha.ac.in