Category Archives: Faculty

Press coverage of Prof. K. Chattopadhyay Group’s research on mechanical behaviour of sea shells

We are pleased to note that several popular science media outlets have covered a recent paper from Prof. Chattopadhyay’s group in the journal Scientific Advances: Morphogenesis and mechanostabilization of complex natural and 3D printed shapes (by Chandra Sekhar Tiwary, Sharan Kishore, Suman Sarkar, Debiprosad Roy Mahapatra, Pulickel M. Ajayan, Kamanio Chattopadhyay).

Here’s a partial list:

An article in The Hindu on Prof. Suryasarathi Bose’s research

R. Prasad in The Hindu: IISc researchers produce a superior water filter:

A membrane capable of producing safe drinking water by filtering out objects at the nanoscale level and killing the commonly found pathogenic bacteria E. coli has been developed by a team led by Dr. Suryasarathi Bose, Assistant Professor, Department of Materials Engineering, IISc, Bengaluru.

The membrane is produced by mixing two polymers — poly(vinylidene fluoride) (PVDF) and poly(methyl methacrylate) (PMMA) — that become miscible at about 220 degree C. While PVDF crystallises during cooling, PMMA does not and separates out; the PMMA is removed using a solvent. This property of selective crystallisation and separation is taken advantage of to produce a nano-porous membrane.

Book: “Thermodynamics, Diffusion and the Kirkendall Effect in Solids”

We are pleased to announce the publication of the book entitled Thermodynamics, Diffusion and the Kirkendall Effect in Solids by Prof. Aloke Paul, Prof. Tomi Laurila, Prof. Vesa Vuorinen, and Prof. Sergiy V. Divinski. The book has been published by Springer. [Here’s the Amazon page for the book].

Here’s the book description from the publisher’s website:

  • Solves open problems in the analysis and structure of thermodynamics and diffusion in the solid state

  • Demonstrates the laboratory procedures and experimental results

  • Shows the calculation procedures of different kinds of diffusion parameters and structure of thermodynamics and diffusion in the solid state

  • Demonstrates the laboratory procedures and experimental results

  • Shows the calculation procedures of different kinds of diffusion parameters

Covering both basic and advanced thermodynamic and phase principles, as well as providing stability diagrams relevant for diffusion studies, Thermodynamics, Diffusion and the Kirkendall Effect in Solids maximizes reader insights into Fick’s laws of diffusion, atomic mechanisms, interdiffusion, intrinsic diffusion, tracer diffusion and the Kirkendall effect.

Recent advances in the area of interdiffusion will be introduced, while the many practical examples and large number of illustrations given will serve to aid researches working in this area in learning the practical evaluation of various diffusion parameters from experimental results.

With a unique approach to the two main focal points in solid state transformations, energetics (thermodynamics) and kinetics (interdiffusion) are extensively studied and their combined use in practise is discussed. Recent developments in the area of Kirkendall effect, grain boundary diffusion and multicomponent diffusion are also covered extensively.

This book will appeal to students, academicians, engineers and researchers in academic institutions, industry research and development laboratories.

Book on High Entropy Alloys by Professors B.S. Murty, J.-W. Yeh and S. Ranganathan

We are pleased to announce the publication of the book High Entropy Alloys by Prof. B.S. Murty (IIT-M, and an alumnus of our Department), Prof. J.-W. Yeh (National Tsing Hua University), and Prof. S. Ranganathan. The book has been published by Butterworth Heinemann, an Elsevier imprint. [Here’s the Amazon page for the book.]

Here’s the book description from the publisher’s website:

This book provides a complete review of the current state of the art in the field of high entropy alloys (HEA). The conventional approach to alloy design is to select one principal element and add elements to it in minor quantities in order to improve the properties. In 2004, Professor J.W. Yeh and his group first reported a new approach to alloy design, which involved mixing elements in equiatomic or near-equiatomic proportions, to form multi-component alloys with no single principal element. These alloys are expected to have high configurational entropy and hence were termed as “high entropy alloys.”

HEAs have a broad range of structures and properties, and may find applications in structural, electrical, magnetic, high-temperature, wear-resistant, corrosion-resistant, and oxidation-resistant components. Due to their unique properties, high entropy alloys have attracted considerable attention from both academics and technologists. This book presents the fundamental knowledge present in the field, the spectrum of various alloy systems and their characteristics studied to date, current key focus areas, and the future scope of the field in terms of research and technological applications.

Book on Crystallographic Textures by Prof. Satyam Suwas and Prof. R.K. Ray

We are pleased to announce that Crystallographic Textures in Materials by Prof. Satyam Suwas and Prof. R.K. Ray has been published by Springer [see also: Amazon and Google Books].

Here’s a description of the book at Springer:

  • Provides a comprehensive and invaluable overview of the basics of crystallographic textures and their industrial applications

  • Introduces the existing methods of representation in an accessible manner and presents a thorough overview of existing knowledge on texture of metallic materials

  • Constitutes an invaluable reference text for researchers and professionals working on texture analysis in metallurgy, materials science and engineering, physics and geology

Providing a comprehensive and invaluable overview of the basics of crystallographic textures and their industrial applications, this book covers a broad range of both structural and functional materials. It introduces the existing methods of representation in an accessible manner and presents a thorough overview of existing knowledge on texture of metallic materials.

Texture analysis has widespread use in many industries, and provides crucial input towards the development of new materials and products. There has been rapid growth in the science and art of texture analysis in the last few decades. Other topics addressed within this book include recent research on texture in thin films and non-metals, and the dependence of material properties on texture, and texture control in some engineering materials.

This book constitutes an invaluable reference text for researchers and professionals working on texture analysis in metallurgy, materials science and engineering, physics and geology. By using content selectively, it is also highly accessible to undergraduate students.

The Hindu features Prof. Suryasarathi Bose’s Work

In the R. Prasad reports in The Hindu‘s Science and Technology page today: IISc: novel membrane filters water, kills bacteria. The report is about a recent paper from Prof. Suryasarathi Bose‘s group.

A low-cost water purification membrane capable of filtering out objects greater than one micron size and also killing E. coli bacteria has been developed by the Bangalore-based Indian Institute of Science (IISc) researchers and Steer Engineering Pvt. Ltd, Bangalore. The results of the study were published recently in the Journal of Materials Chemistry A.

The novel membrane with pores as small as 0.57-0.68 microns was developed by mixing two polymers — polyethylene (PE) and polyethylene oxide (PEO) — at 180 degree C. Unlike PE, PEO is water-soluble and the two polymers are immiscible.

“We want them to be immiscible as we want to remove one of them, in this case the PEO which is water soluble,” said Dr. Suryasarathi Bose, Assistant Professor, Department of Materials Engineering, IISc. He is the corresponding author of the paper. Tiny holes came into being once the water-soluble polymer was removed.