Category Archives: Events

21 Jan 2017 : Metallurgy Reunion

Following the traditions set by the seniors, the three batches of students of the Metallurgy Department graduated in 1965, 1967 and 1968 are collectively planning a reunion on January 21, 2017. They will be in the Dept. of Materials Engineering. Students and faculty of the Department can take this opportunity to meet with the alumni and share their experiences.

Alumni Day at IISc on 17 December 2016

The Institute is pleased to invite all its alumni back to our beautiful campus to join the Alumni Day Celebrations on Saturday, the 17th of December 2016. This is going to be the first of what is being planned as an annual event.

The individual Departments will put together a program for the morning of these day-long celebrations; the afternoon will feature an Institute-wide event in the Satish Dhawan Auditorium.

This is the first announcement to alert our alumni to mark their calendars, and to include these Celebrations in their Bangalore visit plans. We will come back with more information (and a detailed program) in due course.

We request you to inform your fellow alumni about this event.

And, we look forward to your participation in the Alumni Day Celebrations!

GIAN Course on Basics and Applications of Phase Field Modeling in Materials Science

Basics and Applications of Phase Field Modeling in Materials Science

A GIAN Course

5-9 December 2016
Department of Materials Engineering
Indian Institute of Science

We are pleased to announce a week long GIAN course on Basics and Applications of Phase Field Modeling in Materials Science to be held in the Indian Institute of Sciece campus during 5-9 December 2016. This is a 1-credit course taught by Prof. Mathis Plapp (Ecole Polytechnique, Paris, France), together with a team of instructors drawn from academic institutions and R&D labs in India.

The Course web page has more details.

Sports Day 2016

“Sports day is observed every year at Materials Engineering Department as a event of competitive and participatory games ranging from athletic to indoor sports. It aims to bring together all students and faculty of department on a non routine platform of physical activities.”

Please fill in the form.

Statistics from this poll will be used to finalise events to be held on Sports Day-2016. Last date for submission is 25th August.

Your suggestions are welcome.

We are looking forward for your participation.”

Thanks,

Event Address: IISc Gymkhana
Contact: Ali, 8277059204, ali.idrees2@gmail.com
Anupam, 7259895397, mishraanupam0@gmail.com
Esaki, 9901883415, nesakki@platinum.materials.iisc.ernet.in
Sneha, 9422031779, patilsnehapatil2468@gmail.com

GIAN Course: Process Metallurgy for 2016 and Beyond

Process Metallurgy for 2016 and Beyond

A GIAN Course

6-18 June 2016
Department of Materials Engineering
Indian Institute of Science

We are pleased to announce a 2-week long GIAN course on Process Metallurgy for 2016 and Beyond to be held in the Indian Institute of Sciece campus during 6-18 June 2016. This is a 2-credit course taught by Prof. Seshadri Seetharaman (Royal Institute of Technology, Stockholm, Sweden), together with a team of instructors drawn from academic institutions and R&D labs in India.

The Course web page has more details.

Seminar Series by Prof. Kannan Krishnan

[Update: Please note the change in the date for the first seminar; it will be held on Tuesday, 12.1.2016]

* * *

Prof. Kannan M. Krishnan (Department of Materials Science & Engineering, and Physics, University of Washington, Seattle, USA) is currently a Brahm Prakash Visiting Chair in our Department (see below for his biosketch). He will deliver a series of three seminars during January 2016:

  1. From materials to medicine: a sp↑n through recent developments in imaging, therapy and diagnostics (Tuesday, 12.1.2016)
  2. Magnetism on the mesoscale: Nanotechnology, Lithography, Information Storage and Logic (Wednesday, 13.1.2016)
  3. Magnetism, microstructure and materials characterization (date to be announced)

All the seminars will be at 3:30 p.m. in the Lecture Theatre of the Department of Materials Engineering. Please see the notices for the individual seminars for their abstracts: Seminar 1, Seminar 2, and Seminar 3).

* * *

Prof. Kannan M. Krishnan

Kannan M. Krishnan obtained his B. Tech (Mech. Eng.) from IIT Kanpur and Ph.D. (Materials Science; Minor in Physics & Mathematics) from UC, Berkeley. After graduation in 1984, he held various scientific and teaching positions at Lawrence Berkeley National Laboratory and UC, Berkeley, before joining the University of Washington, in 2001, as the Campbell Chair Professor of Materials Sciences & Engineering and Adjunct Professor of Physics. He has held visiting appointments in all six continents including the Hitachi Central Research Laboratory (Japan), Tohoku University, Danish Technical University, University of Sao Paolo, University of Western Australia, University of Alexandria (Egypt), and the Indian Institute of Science.

Prof. Krishnan’s current research focus is broadly on two major, inter-related themes: (i) Bioengineering at the intersection of Magnetism, Materials and Medicine focusing on diagnostics, imaging and therapy, with appropriate translational research and commercialization activities. (ii) Materials Engineering & Condensed Matter Physics with emphasis on nanoscale magnetic and transport (both charge and spin) phenomena in reduced dimensions, including their inter-coupling and structure-property correlations at relevant length scales, to develop paradigms for materials and devices in the context of information (storage, processing and logic) and energy technologies.

Prof. Krishnan is widely recognized for research, teaching, mentoring and entrepreneurship. He has received the TMS/FMD Distinguished Scientist/Engineer Award (2015), IEEE Donald G. Fink Prize (2012), Fulbright Specialist Award (2010), IEEE Magnetics Society Distinguished Lecturer Award (2009), Guggenheim Fellowship (2004), the Rockefeller Bellagio Fellowship (2008), the Burton Medal (Microscopy Society of America, 1992), JSPS Senior Scientist Fellowship (2002), the College of Engineering Outstanding Educator Award (UW, 2004), an appointment as the Professor-at-large (University of Western Australia, 2006-8) and a nomination as the UW candidate for the AAAS Mentor award (2009). Based on his teaching and scholarship, his comprehensive 820-page single author book, entitled “Fundamentals and Applications of Magnetic Materials”, will be published by Oxford University Press in 2016. He is an elected Member of the Washington State Academy of Science, and Fellow of the American Association for the Advancement of Science, the American Physical Society, the Institute of Physics (London) and the Institute of Electrical and Electronics Engineers (IEEE). He has served on the editorial boards of the Journal of Materials Science, Journal of Magnetism and Magnetic Materials, Acta Materialia, Journal of Physics D: Applied Physics, IEEE Magnetics Letters and Medical Physics. His service activities are extensive and include the UW College of Engineering Promotion and Tenure Council (2001-5), the UW Common Book selection committee (2010), the IEEE Magnetics Society Administrative Committee (2011-3) and the Fetzer Institute Advisory Council on the Engineering Professions (2011-3).

In 2010, along with two former graduate students, he has founded a start-up company, LodeSpin Labs, involved in the development of tailored magnetic carriers for a range of biomedical applications.

Seminar Series by Prof. Kannan Krishnan – 3

Department of Materials Engineering
Indian Institute of Science

is pleased to invite you to the seminar on

Magnetism, microstructure and materials characterization
by
Prof. Kannan M. Krishnan
Brahm Prakash Visiting Chair
Department of Materials Engineering
Indian Institute of Science, Bangalore
and
Department of Materials Sciences & Engineering, and Physics
University of Washington
Seattle, USA

at 3:30 p.m.
on (Date to be announced)
in the Lecture Theatre, Department of Materials Engineering.

Abstract

Magnetic materials, subtle in their manifestation, are electronically driven with their origin in the Pauli exclusion principle and the existence of electron spin. They are known for a variety of both classical and quantum-mechanical effects, arising from both short- and long-range forces, and are widely associated with “microstructure” or the morphological arrangements of magnetic moments (domains), as well as phases, grains, or individual atoms themselves. These are, in part, the reason for the richness in properties and technological applications encountered in magnetic systems. These are also, in part, why the magnetic behavior of materials is poorly understood [1].

In this talk, with a materials science structure-property-processing perspective, and drawing on our work on a wide range of materials [2] (nanoparticles [3], doped semiconducting oxides [4] and epitaxially grown metallic heterostructures [5]), I will describe their behavior at relevant length scales. Advanced characterization techniques using transmission electron microscopy (electron energy-loss spectroscopy, holography [6], energy-filtered imaging [7], atomic column-by-column z-contrast imaging) and synchrotron radiation [8] (x-ray absorption spectroscopy, x-ray magnetic circular dichroism and x-ray magnetic reflectivity [9]) are integral to these studies.

Specific topics to be addressed include:

  • Self-assembly [10], inter-particle magnetic interactions/order [11] and “memory” in magnetic nanoparticle systems
  • Defect-mediated ferromagnetism [12] in transition-metal-doped dilute magnetic semiconductors
  • Exchange-bias [13], asymmetric magnetic reversal [14] and the role of buried interfaces [15] in epitaxial heterostructures [16].

1. Kannan M. Krishnan, Fundamentals and applications of magnetic materials, Oxford University Press, 820pp, ISBN 9780199570447 (Available, Summer 2016)

2. Kannan M. Krishnan et al, Jour. Mat. Sci. 41, 793–815 (2006)

3. V. F. Puntes, Kannan M. Krishnan and P.A. Alivisatos, Science, 291, 2115-2117 (2001).

4. K. G. Roberts, M. Varela, S. Rakshev, S. Pantelides, S. J. Pennycook and Kannan M. Krishnan, Phys, Rev. B 78, 014409 (2008)

5. Wei Zhang and Kannan M. Krishnan, “Epitaxial exchange-bias systems: from fundamentals to spin-orbitronics”, Materials Science & Engineering – R: Reports (in press)

6. Y. Takeno, … Kannan M. Krishnan, Appl. Phys. Lett. 105, 183102 (2014)

7. W. Grogger, B. Schaffer, Kannan M. Krishnan and F. Hofer, Ultramicroscopy 96, 481-489 (2003).

8. G. Srajer et al, Jour. Mag. Mag. Mat. 307, 1-31 (2006)

9. Sebastian Brück et al, Phys. Rev. B 81 134414 (2010)

10. Y. Bao, M. Beerman and Kannan M. Krishnan, Jour. of Mag. Mag. Mat., 272-276, Supp1, E1367-E1368 (2004)

11. Y. Gao, Y. Bao, A. B. Pakhomov, Daisuke Shindo and Kannan M. Krishnan, Phys. Rev. Lett., 96, 137205 (2006)

12. K.A. Griffin, A.B. Pakhomov, C.M. Wang, S.M. Heald, Kannan M. Krishnan, Phys. Rev. Lett., 94, 157204 (2005)

13. W. Zhang and Kannan M. Krishnan, Jour. Micromech. & Microeng. 24, 093001 (2014)

14. P. Blomqvist, Kannan. M. Krishnan and H. Ohldag, Phys. Rev. Lett., 94, 107203 (2005)

15. S. Bruck, E. Goering, G. Schutz, X. Ji and Kannan M. Krishnan, Phys. Rev. Lett. 101, 126402 (2008)

16. This work was supported by US-Grants DOE DE-AC03-76SF00098, DoE/BES ER-45987, NSF/DMR #0203069, NSF/DMR #0322729, NSF/ECS #0224138, NSF/DMR #0315460

Seminar Series by Prof. Kannan Krishnan – 2

Department of Materials Engineering
Indian Institute of Science

is pleased to invite you to the seminar on

Magnetism on the mesoscale: Nanotechnology, Lithography, Information Storage and Logic
by
Prof. Kannan M. Krishnan
Brahm Prakash Visiting Chair
Department of Materials Engineering
Indian Institute of Science, Bangalore
and
Department of Materials Sciences & Engineering, and Physics
University of Washington
Seattle, USA

at 3:30 p.m.
on 13.1.2016 (Wednesday)
in the Lecture Theatre, Department of Materials Engineering.

Abstract

There has been a renaissance in magnetism and magnetic materials research on the nanometer length scale, largely driven by size-dependent scaling laws, exchange, proximity and interface effects, advances in fabrication [1,2], and their demonstrated impact in information technologies.

I will begin this lecture with a brief discussion of criteria that define Nanoscience and Nanotechnology and illustrate them with characteristic length scales and size effects that make magnetism ideal, not only for fundamental investigations, but also technological developments on this length scale.

In the second part of this lecture, I will present recent developments in lithographic fabrication of nanoscale elements, emphasizing the facile, low-cost method of nanoimprint lithography. I will then illustrate some fundamental magnetic studies of competing anisotropies in epitaxial grown nanowire arrays [3], manipulating domain wall reversal by shape anisotropy [4] and the properties of three-dimensional “sombrero” shaped s structures [5,6].

Next, I will address the current status of magnetic recording media and discuss the development of next-generation bit-patterned media [7], proposed to sustain the current growth rate of recording densities. I will conclude with a discussion of a novel concept of building Boolean logic gates [8], called magnetic quantum cellular automata, based purely on dipolar coupling of magnetic arrays [9].

1. Wei Zhang and Kannan M. Krishnan, “Epitaxial patterning of thin films: conventional lithographies and beyond”, Jour. Micromech. & Microeng. 24, 093001 (2014)

2. Y. Bao, T. Wen, A.C. Samia, A.P. Khandhar, and Kannan M. Krishnan, “Magnetic Nanoparticles: Materials Engineering and Emerging Applications in Lithography and Biomedicine”, Jour Mater. Sci. , 51, 513-553 (2016)

3. Wei Zhang, Mark E. Bowden and Kannan M. Krishnan, “Nanoimprint-lithography patterned epitaxial Fe nanowire arrays with misaligned magnetocrystalline and shape anisotropies”, Jour. Appl. Phys. 113 17B502 (2013)

4. W. Zhang, D. N Weiss and Kannan M Krishnan, “ Thermal nanoimprint process for high-temperature fabrication of epitaxial exchange-biased metallic nanostructures”, Jour. Micrmech. Microeng. 21, 045204 (2011)

5. Byung Seok Kwon, Wei Zhang and Kannan M. Krishnan, “Sombrero-shaped Fe3O4 nanoelements with tunable out-of-plane and in-plane magnetization components fabricated by nano-imprint lithography”, Jour. Appl. Phys. 115, 17B506 (2014

6. Byung-Seok Kwon, Wei Zhang and Kannan M. Krishnan, “Direct release of Bio-compatible Sombrero-shaped Magnetite Nanoparticles via Nanoimprint Lithography”, Advanced Materials – Interfaces, 2, 1400511 (2015)

7. Zheng Li, Wei Zhang+ and Kannan M. Krishnan, “Large-area patterning of sub-100 nm L10 FePt dots array”, AIP Advances. 5, 087165 (2015)

8. Zheng Li and Kannan M. Krishnan, “Misalignment-free signal propagation in nanomagnet arrays and logic gates with 45°-clocking field”, Jour. Appl. Phys. 115, 17E502 (2014)

9. This work was supported by US-DOE/BES Grant ER45987 and US-NSF Grant DMR-1063489