Electrical Engineering

Shreepad Karmalkar is a Professor of Electrical Engineering and Head of the Teaching Learning Center at IITM. He received the B. Tech and accelerated PhD degrees in Electrical Engineering from the Indian Institute of Technology Madras (IITM), in 1983 and 1989, respectively. He has held visiting research / teaching assignments at several US universities, namely, University of California, Santa Barbara; Rensselaer Polytechnic Institute, Troy, New York; and University of South Carolina, Columbia, USA.
He has authored numerous articles in journals, conferences and books, and has been awarded three patents in the areas of semiconductor device modeling and process development. His recent work is on modeling and simulation of power devices, nano-devices, GaN HEMTs and solar cells. He has received the 2006 Vikram Sarabhai Award for research, 2007 IBM Faculty Award for research and teaching, 2021 VLSI Society of India Best Faculty Award for "contributions in the area of teaching, popularizing and creating some of the best minds in Microelectronics in the last 30 years," and the president's nomination to the IIT Council for "contributions in education, science or technology". He is an Associate Editor of IEEE Trans. on Education (first ever from India). He has acted as a consultant to industries for developing manufacturing processes for semiconductor devices.

Device Modeling and Simulation.
Experimental Investigations on Processes in Semiconductor Technology.
Indigenous Development of Imported Devices.
MEMS / Microfluidics / Nanotechnology.

VLSI Society of India Best Faculty Award for contributions in the area of teaching, popularizing and creating some of the best minds in Microelectronics in the last 30 years in India (2021).
President's nominee in the IIT Council for contributions in education, science or technology (2019-2022).
President's nominee in faculty selection committee of Central University of Tamil Nadu, IIT Bombay, IIT Roorkee, IIT(ISM) Dhanbad (2017-2021).
Associate Editor, IEEE Trans Education (2013 onwards; first ever from India since the inception of this journal in 1958).
IBM Faculty Award for Research and Teaching initiatives in nano-scale MOSFETs (2007).
Vikram Sarabhai Research Award for contributions to analytical modeling and numerical simulation of novel and short channel devices and development of new semiconductor processes (2006).
First student in IIT Madras to be admitted into the PhD program and appointed as a Senior Scientific Officer in the EE department directly after B Tech, based on the B Tech academic record (1983).

Current Courses

Introduction to Research.
Semiconductor Device Modeling.
VLSI Technology.
MOS Device Modeling.
Microelectromechanical Systems.
Power Semiconductor Devices.
Special Semiconductor Devices.
VLSI Design (1/2).
Analog IC Design (1/3).
Digital IC Design (1/3).
Solid State Devices.
Device Modeling.
Electronic Circuits.
Networks and Systems.
Introduction to Electrical Engineering.
Digital Electronics.
Basic Electronics Laboratory.
Advanced Electronics Lab.
VLSI Design Laboratory.
Electrical Sciences Lab.

Journals

B Prasannanjaneyulu, D S Rawal and S KARMALKAR, Extraction of the edge/areal components and path of the reverse gate leakage in a GaN HEMT from measurements, Semiconductor Science and Technology, vol 37, no 4, p 065014, Apr 2022.
K Akshay and S KARMALKAR, Optimum Aspect Ratio of Superjunction Pillars Considering Charge Imbalance, IEEE Transactions on Electron Devices, vol 68, no 4, pp 1798 - 1803, Apr 2021.
Anvar A and S KARMALKAR, Edge effects on the contact resistance of side-bonded contacts to heavily n-doped silicon nanowires, Physica E, vol 130, p 114669, Jan 2021.
K Akshay and S KARMALKAR, Improved Theoretical Minimum of the Specific On-Resistance of a Superjunction, Semiconductor Science and Technology, vol 36, no 1, p 015021, Dec 2020.
K Akshay and S KARMALKAR, Note Clarifying the Paper, "Charge Sheet Super Junction in 4H-Silicon Carbide: Practicability, Modeling and Design", IEEE Journal of the Electron Devices Society, vol 8, pp 1315 - 1316, Oct 2020.
K Akshay and S KARMALKAR, Charge Sheet Super Junction in 4H-Silicon Carbide: Practicability, Modeling and Design, IEEE Journal of the Electron Devices Society, vol 8, pp 1129 - 1137, Sep 2020.
K Akshay and S KARMALKAR, Quick Design of a Superjunction Considering Charge Imbalance Due to Process Variations, IEEE Transactions on Electron Devices, vol 67, no 8, pp 3024-3029, Aug 2020.
B Prasannanjaneyulu, and S KARMALKAR, Relative effectiveness of high-k passivation and gate-connected field plate techniques in enhancing GaN HEMT breakdown, Microelectronics Reliability, vol 110, no 113698, pp 1 - 6, Jul 2020.
D Pradeep, S Bhattacharya and S KARMALKAR, Augmentation and Assessment of a Universal FET I-V Model for Simulating GaN HEMTs, IEEE Transactions on Electron Devices, vol 67, no 3, pp 847 - 854, Mar 2020.
B Prasannanjaneyulu, S Mishra and S KARMALKAR, Analysis of the Significant Rise in Breakdown Voltage of GaN HEMTs From Near-Threshold to Deep Off-State Gate Bias Conditions, IEEE Transactions on Device and Materials Reliability, vol 19, no 4, pp 766 - 773, Dec 2019.

Patents

S KARMALKAR and D Sridhar, An apparatus for maintaining steady plating current in pulse electroplating applications , Indian Patent #188558 (sealed on 18th July 2003).
S KARMALKAR and D Sridhar, A process for obtaining a silicon substrate with uniform and adherent deposit of palladium or other metal thereon by electroless plating , Indian Patent #188631 (sealed on 1st Aug 2003).
S KARMALKAR and D Sridhar, A method of electroplating metal contacts on a P+N semiconductor diode substrate and an apparatus for carrying out the said method , Indian Patent # 188350 (sealed on 1st Aug 2003).

Books Authored

S KARMALKAR, M S Shur and R Gaska, GaN-based Power High Electron Mobility Transistors , Chapter 3 in Wide Energy Bandgap Electronic Devices (pp 175-218), edited by Fan Ren, World Scientific (2003).
S KARMALKAR, A Course for Fostering Research Spirit, in Collection of papers by distinguished academics and professionals, brought out by Indian Society for Technical Education, (2011).

His contributions in the field of education include three widely viewed online video courses on Solid State Devices, Semiconductor Device Modeling and Introduction to Research (see links below). The latter is a lecture-cum-activity oriented course to foster research skills among research scholars. He initiated this as a compulsory course for all research scholars in IITM and has conducted over 30 workshops country-wide. He has also conducted solely or jointly over 80 Faculty Development sessions on various aspects of How teachers can make a difference in institutions including IITs, IISERs, NITs, and IIIT.
He is a member of the Governing Council of CeNS (Center for Nano and Soft Matter Sciences). He was a member of the National Working Group on Nanotechnology set up by the Department of Information Technology, Govt of India. He is a member of the executive committee of AICTE and the Chairman of AICTE's All India Board of PG Education and Research. He was a member of the All India Board of Undergraduate Studies of the AICTE.
He was the Vice-Chairman of JEE 2006 and Chairman of JEE 2007 operations in the South Zone.
He is a strong espouser of holistic education, and a multilingual - can read, write and speak - Bengali, Hindi, Marathi, and can converse in - Thelugu, Thamizh and to an extent, Sanskrit.I was born in Pune, which is regarded as the cultural capital of Maharashtra. Since the age of three, however, I have lived outside Maharashtra, in several places. I studied in Kolkata, in a Bengali medium school upto standard IV, and did my standard V in Indore in a Hindi medium corporation school. Then, our family moved to Secunderabad, where I completed the rest of my schooling upto standard XI (higher secondary of yesteryears) in Kendriya Vidyalaya, Picket. I did my B Tech at IIT Madras in the Electronics stream of the Electrical Engineering Department. My stay and education in different parts of India has broadened my outlook and enabled me to pick up several languages - I have learnt to read, write and speak Bengali, Hindi and my mother tongue, Marathi, and to speak Telugu and Tamil.
By the time I completed my B Tech at IIT Madras, I realized that I was cut out for a career in research and teaching. I applied to reputed US universities for further studies and received lucrative offers. At the same time, as per a scheme of the then director of IIT Madras, my teachers offered me another option based on my academic performance in B Tech - direct admission into the PhD program and appointment as a Senior Scientific Officer in the EE department of IIT Madras. A patriotic impulse (internal factor) and the promises of my teachers (external factor) motivated me to chose this option. Carrying through this decision has been a great learning experience in my life.
Apart from professional activities, I have deep interest in music (sing light and classical), philosophy, social service (participated in the relief operations of 1977 cyclone in Andhra Pradesh; have coordinated the activities of the Voluntary Blood Donor's club of IIT Madras since 2001), and sports (participated in football, kabaddi, cricket tournaments and in some boxing competitions too !).

Shreepad Karmalkar

Professor

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