People

Professors

Matti Mäntysalo

Professor
Elektroniikka
Faculty of Information Technology and Communication Sciences
Tampere University
+358407576800
matti.mantysalo@tuni.fi

https://orcid.org/0000-0002-7780-6454

Sayani Majumdar

Associate Professor (tenure track)
Thin Film Electronics
Faculty of Information Technology and Communication Sciences
Tampere University
+358405946214
+358405946214
sayani.majumdar@tuni.fi

https://orcid.org/0000-0001-7779-3959

More information

About me

My core research interest is development of Neuromorphic Computing hardware for next generation of energy-efficient, intelligent and adaptive computing and sensing. More specifically, my team's research focus is Non-volatile Memories, synaptic weight elements and leaky-integrate and fire neuron components based on Back-end CMOS compatible Ferroelectric thin films and oxide or 2D semiconductor based heterostructures. My research experience and interest also includes Spintronic components like magnetic tunnel junctions and different other emerging solid state electronic devices including optoelectronic and flexible and wearable sensor components.

Responsibilities

Teaching Courses on Semiconductor Device Physics (spring 2024) and Future Computing Devices and Architecture (upcoming, Fall 2024) and Research on Beyond CMOS computing devices and systems.

Field of expertise

Micro and Nanoscale Solid-state Electronic Device design and fabrication; Characterization; Modelling; and Neuromorphic Computing.

Research topics

Neuromorphic Computing and Adaptive Sensing for Extreme Edge devices
Low-thermal budget ferroelectric memories
Atomic Layer Deposited (ALD) thin film devices

Research unit

Electrical Engineering

Research fields

Neuromorphic Computing hardware; Non-volatile memories; Sensing; Optoelectronics, Cryogenic Electronics for Quantum Computing

Research career

I did my Ph. D. from Indian Association for the Cultivation of Science in 2006 working on fundamental physics of complex oxide materials down to deep cryogenic temperatures.
As a post-doctoral fellow in Åbo Akademi University and University of Turku in Finland, I initiated and led research on hybrid spintronic components.
I was chosen a Junior Group Leader by Turku Collegium for Science and Medicine working on Spintronic Components between 2010-2013.
I worked as a visiting scientist in Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, USA in 2010 and 2011, working on magnetic tunnel junctions.
I was an Academy Research Fellow in Aalto University, Finland , with my key research focus on ferroelectric tunnel junction based memristors and their application as electronic synapses and neurons in neuromorphic computing.
As a senior scientist in VTT, my research portfolio was further diversified to include development of 2D semiconductor based memory and logic components based on ALD grown Hafnia based ferroelectric memory (FeFET, FeTFT) devices for energy-efficient hardware for neuromorphic computing.

Funding

Mission statement

Selected publications

Modelling Ferroelectric Hysteresis of HZO Capacitor with Jiles-Atherton Model for Non-Volatile Memory Applications, Ella Paasio, Mika Prunnila, Sayani Majumdar, IEEE 12th Non-Volatile Memory Systems and Applications Symposium (NVMSA), Niigata, Japan, pp.1, 2023. doi: 10.1109/NVMSA58981.2023.00019.
Back-end and Flexible Substrate Compatible Analog Ferroelectric Field Effect Transistors for Accurate Online Training in Deep Neural Network Accelerators, S Majumdar, I Zeimpekis, Advanced Intelligent Systems, 2300391 (2023).
Large-area synthesis of high electrical performance MoS2 by a commercially scalable atomic layer deposition process, N Aspiotis, K Morgan, B März, K Müller-Caspary, M Ebert, E Weatherby, S Majumdar, I Zeimpekis, npj 2D Materials and Applications 7 (1), 18 (2023).
An efficient deep neural network accelerator using controlled ferroelectric domain dynamics, S Majumdar, Neuromorphic Computing and Engineering 2 (4), 041001 (2022).
Back-End CMOS Compatible and Flexible Ferroelectric Memories for Neuromorphic Computing and Adaptive Sensing, S Majumdar, Advanced Intelligent Systems 4, 2100175 (2022).
Ultrafast Switching and Linear Conductance Modulation in Ferroelectric Tunnel Junctions via P (VDF-TrFE) Morphology Control, S Majumdar, Nanoscale 13, 11270-11278 (2021).
Tactile sensory coding and learning with bio-inspired optoelectronic spiking afferent nerves, H Tan, Q Tao, I Pande, S Majumdar, F Liu, Y Zhou, POÅ Persson, J Rosen, S van Dijken, Nature communications 11 (1), 1369 (2020).
Crossover from synaptic to neuronal functionalities through carrier concentration control in Nb-doped SrTiO3-based organic ferroelectric tunnel junctions, S Majumdar, H Tan, I Pande, S van Dijken, APL Materials 7, 091114 (2019).
Energy‐Efficient Organic Ferroelectric Tunnel Junction Memristors for Neuromorphic Computing, S Majumdar, H Tan, Q Qin, S van Dijken, Advanced Electronic Materials 5, 1800795 (2019).

Own links

Paul Berger

Visiting Researcher
Faculty of Information Technology and Communication Sciences
Tampere University
+358503006064
paul.berger@tuni.fi

https://orcid.org/0000-0002-2656-2349

More information

About me

Paul R. Berger (S’84 M’91 SM’97 F’11) is a Professor in Electrical & Computer Engineering at Ohio State University and Physics (by Courtesy). He is also a Distinguished Visiting Professor at Tampere University in Finland. He received the B.S.E. in engineering physics, and the M.S.E. and Ph.D. (1990) in electrical engineering, respectively, all from the University of Michigan, Ann Arbor.

Research topics

Currently, Dr. Berger is actively working on quantum tunneling devices, printable semiconductor devices & circuits for IoT, bioelectronics, novel devices, novel semiconductors and applied physics.

Top achievements

Selected awards:

Outstanding Engineering Educator Award, Ohio Society of Professional Engineers (2014); Distinguished Lecturer, IEEE EDS (2011-present);

Fellow, IEEE (2011) “for contributions to the understanding, development, and fabrication of silicon-based resonant interband tunneling devices and circuits”;

DARPA Excellence Award (1998); NSF CAREER Award (1996).

H-index 37; authored >240 referred publications/presentations; ~100 plenary/keynote/invited

Selected Other key academic merits

General Chairman, Intern’l Flexible Electronics Technology Conference (IFETC), (2021)

Successfully hosted IFETC virtually in 2021!

Chairman, 2018-2020, Founding Member 2015-2017, EDS Materials Committee

Selected Editorships

Founding Editor-in-Chief for the newly launched IEEE EDS Journal on Flexible Electronics.

Lead Guest Editor: Berger created the idea and established an editorial team for a Special Issue on “Low Temperature Processing of Electronic Materials for Cutting Edge Devices,” IEEE Transactions on Electron Devices, (Publication July 2021).

Own links

Donald Lupo

Emeritus Professor
Faculty of Information Technology and Communication Sciences
Tampere University
+358408490614
donald.lupo@tuni.fi

Staff

Jari Keskinen

Staff Scientist
Faculty of Information Technology and Communication Sciences
Tampere University
+358503567543
jari.keskinen@tuni.fi

https://orcid.org/0000-0002-3144-972X

Mika-Matti Laurila

Visiting Researcher
Faculty of Information Technology and Communication Sciences
Tampere University
+358503014394
mika-matti.laurila@tuni.fi

Chirag Mevada

Postdoctoral Research Fellow
Faculty of Information Technology and Communication Sciences
Tampere University
+358504107256
chirag.mevada@tuni.fi

https://orcid.org/0000-0001-6221-6075

More information

About me

I have joined Tampere University as a Post-doctoral research fellow for Transient Electronics for Sustainable ICT in DigitaL Agriculture Project. My current scientific interests focus on synthesizing nanocomposites and utilizing the same to fabricate 3D-printed supercapacitors using additive manufacturing methods and investigating their electrochemical behaviours for next-generation energy storage applications.

Responsibilities

Fabrication, characterization and application of 3D Printed Supercapacitors.

Field of expertise

Synthesis of sustainable nanomaterials (nanoparticles, porous materials, thin films, composites) for next-generation energy storage applications (supercapacitors and batteries).

Research topics

Nanomaterials (nanoparticles, porous materials, thin films, composites) for next-generation energy storage applications (supercapacitors and batteries) and Catalysts and reaction engineering

Research unit

Printable Electronics Research Group, Tampere University

Research fields

Nanotechnology, Chemical Engineering, Materials Engineering and Electrical Engineering

Project links

Mission statement

The overarching goal is to develop high-performance green electronics using sustainable materials and processes and demonstrate their use in the energy digital agriculture sector. Digital agriculture as end-use is specifically used here because it provides a unique opportunity to evaluate the use of ICT in an impactful real-life application while providing the necessary testbed to evaluate the degradability of the proposed solution.

Amit Tewari

Postdoctoral Research Fellow
Faculty of Information Technology and Communication Sciences
Tampere University
+358504775740
+358504775740
amit.tewari@tuni.fi

https://orcid.org/https://orcid.org/0000-0002-0904-243X

More information

About me

About me:

- Interdisciplinary background (Physics, Materials Science, Electrical Engineering, Life Sciences)

- Lab-On-Chip microscale bioelectronics sensors using Electrochemical Transistors

- Flexible electronics and microfluidic-based wearable medical sensors.

- Micro/nano fabrications of transistors (OTFTs, OECTs, EGOFFT), and memory devices via high-k materials.

- Cleanroom lab facilities access (multilayer deposition, patterning, Photolithography, etching, etc.)

- Highly dispersive and conductive Graphene Inks

- MATLAB, TCAD (Basic), AUTOCAD, LABVIEW

- Teaching experience for 2 years as a Physics lecturer

- International research experience that includes India, Australia, South Korea, and Finland.

- Research Interest: Graphene; Transistors; Bioelectronic Sensors; Memory Devices

Research topics

Project Title:

High-resolution, Printing-Based Patterning and PHOTOnic SINTERing for High-Speed, Low-Voltage Metal-Oxide Thin Film Transistors (HI-PHOTO-SINTER)

Collaborators:

Faculty of Information Technology and Communications (Tampere University, Finland)

Department of Electrical and Computer Engineering (Ohio State University, USA)

VTT Technical Research Centre (Finland)

Hamed Pourkheirollah

Postdoctoral Research Fellow
Faculty of Information Technology and Communication Sciences
Tampere University
+358504784434
hamed.pourkheirollah@tuni.fi

https://orcid.org/0000-0002-8995-0349

More information

Research fields

Printed electronics, Printed supercapacitors, Flexible energy storage systems

Funding

Latest publications

Simplified exponential equivalent circuit models for prediction of printed supercapacitor's discharge behavior - Simulations and experiments

Pourkheirollah, H., Keskinen, J., Mäntysalo, M. & Lupo, D., 16 maalisk. 2023, julkaisussa: Journal of Power Sources. 567, 14 Sivumäärä, 232932.

Tutkimustuotos: Artikkeli › Scientific › vertaisarvioitu

Statistical analysis and Monte-Carlo simulation of printed supercapacitors for energy storage systems

Pourkheirollah, H., Keskinen, J., Mäntysalo, M. & Lupo, D., 30 marrask. 2023, julkaisussa: Journal of Power Sources. 585, 10 Sivumäärä, 233626.

Tutkimustuotos: Artikkeli › Scientific › vertaisarvioitu

A Modified Exponential Equivalent Parallel Resistance (EPR) Model for Predicting Self-Discharge Behavior of Printed Flexible Supercapacitors

Pourkheirollah, H., Keskinen, J., Lupo, D. & Mäntysalo, M., 2022, 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC). IEEE, s. 264-268 5 Sivumäärä

Tutkimustuotos: Konferenssiartikkeli › Scientific › vertaisarvioitu