Profiles of Division Researchers

	Swastibarata Bhattacharyya Materials Science　Division Researcher Department of Physics, Yokohama National University I did my masters in physics from Indian Institute ofTechnology Guwahati. I received my PhD in the field of materialscience from Indian Institute ofScience,Bangalore. At present, I am working on first principles mapping onto phase field model atDepartment of Physics, Yokohama National University, Japan	Motivation for applying for the position To learn development of first principles based theory and code that will be used to study materialsproperties. Mission/Role Phase field methods are very effective in studying the evolution of microstructures in variousmaterials. We want to bridge this empiricalmethod to the first principles based atomisticmethods.
Ambition To learn and contribute to the first-principles allelectronmixed basis program TOMBO.

	Sankar Kumar Deb Nath Materials Science Division Researcher Institute for Materials Research, Tohoku University I obtained Ph.D. from thedepartment ofMechanicalEngineering,Bangladesh Universityof Engineering and Technology, Dhaka, Bangladeshon the mechanicsof compositmaterials.Majored in multi-scale modelling in mechanics of solidsand liquids,atomistic simulations of physics and chemistryrelated problems. Currently I am working on the phase field modelling of Cu, Al and Cu-Alalloys using molecular dynamics simulation.	Motivation for applying for the position Dendrite structures are formed during the solidification of pureand alloy materials due to the anisotropy of the phase change of the solid-liquid interface. Detailed investigation of the physical andthermodynamic properties of the solid liquid interfaceare needed by the atomistic approach likemolecular dynamic simulations to study the anisotropy of the solid-liquid interface during solidificationusing the large scale phase field modelling. Mission/Role The anisotropy of the solid-liquid interfacial properties of Cu, Al and Cu-Al alloys such as kineticcoefficient, melting point, interfacial free energy etc. will be determined from the project.
Ambition My aim is to investigate the thermodynamic properties of thesolid-liquid interface of Cu, Al and Cu-Al alloys.

	Sergi Ruiz-Barragan Molecular Science Division Researcher Japan Atomic Energy Agency Graduated in Chemistry at University of Girona and received the Doctorate inthe same university with a exited states and non-stationary processes thesis.Current research with path integrals and QM/MMMolecular dynamics inShiga's group at JAEA .	Motivation for applying for the position Develop new methods for studying dynamics. Chemist is not a static science and I think thatwe need to understand correctly the movementof atoms and molecules to improve the reactionand obtain greener ways to produce some products. Mission/Role To improve the path integral code for QM/MM and use it for study some reactions with thesolvent for understand the temperature and the isotope effects in reactions.
Ambition Provide a new program for doing molecular dynamics and path integrals at the same time that I improve my conception of the molecular movement.

Swastibarata Bhattacharyya