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WORKSHOPS

W5 (Dissemination workshop): Energy-efficient Neuromorphic 2D Devices and Circuits for Edge AI Computing

14:00 - 17:30       ROOM R5

CHAIR

Max C. Lemme (AMO GmbH & RWTH Aachen University, DE)

ABSTRACT

Energy-efficient Neuromorphic 2D Devices and Circuits for Edge AI Computing, ENERGIZE, a project under the EU’s Chips Joint Undertaking (Chips JU), develops innovative neuromorphic hardware using two-dimensional (2D) materials for energy-efficient artificial intelligence (AI). It focuses on memristive, ferroelectric, and floating-gate devices to enhance artificial neural networks via chiplet-based multi-core in-memory computing. The project includes wafer-scale growth of 2D materials, reliable device fabrication, efficient neural network training in crossbar arrays, and standardized benchmarking. ENERGIZE fosters a European-Korean collaborative network to advance sustainable, low-power edge computing, redefining AI hardware and strengthening global leadership in chip technology for AI and machine learning applications.

PROGRAM

14:00 - 14:30

Switching Mechanisms in 2D Materials for Neuromorphic Computing Devices

Max C. Lemme (AMO GmbH and RWTH Aachen University, DE)

Two-dimensional (2D) Materials are considered for resistive switching devices and may be potential game-changers for neuromorphic computing hardware [1]. Such volatile or non-volatile ”memristive” devices may be used in computing-in-memory architectures [2], cross-bar arrays [3], or as electronic synapses [4]. Several different microscopic switching mechanisms are proposed in 2D materials, which are different from 3D materials because of the van der Waals layer stacking. Here, I will discuss different MoS2 device configurations that depend on the material growth conditions and lead to different resistive switching behavior and mechanisms, some of which I will show in detail [5–10].
[1] M. C. Lemme et al., Nat Comm 2022, 13, 1392. [2] D. Ielmini, H.-S. P. Wong, Nat Electron 2018, 1, 333. [3] S. Chen et al., Nat Electron  2020, 3, 638. [4] G. Zhou et al., Adv Electron Mat 2022, 8, 2101127. [5] D. Braun et al., in 2022 Device Research Conference (DRC), Columbus, Ohio, USA, 2022. [6] L. Völkel et al., Adv Fun Mat 2024, 34, 2300428. [7] S. Cruces et al., Small Sci n.d., 2400523. [8] K. Ran et al., 2025, DOI 10.48550/arXiv.2504.07980. [9] S. Cruces et al., 2025, DOI 10.48550/arXiv.2504.07979. [10] L. Völkel et al., 2025, DOI 10.48550/arXiv.2501.16359.

14:30 - 15:00​​

Energy-efficient Hardware-Software Co-Optimization for Edge AI Devices

Sungju Ryu (Sogang University, KR)

Recently, generative AI has gained significant attention thanks to its powerful capabilities, but it requires substantially higher computational resources compared to conventional AI models. So, there are challenges in achieving real-time processing, which demands high-performance GPUs and expensive hardware resources. This presentation introduces efficient model compression techniques to operate generative AI on resource-constrained hardware, along with hardware design techniques optimized for such compressed AI models.

15:00 - 15:30

Future of Energy Efficient Computing: Towards Ferromorphic Cognitive Chips

Adrian Ionescu (EPFL, CH)

As AI and IoT scale exponentially, hardware must evolve toward energy-efficient, sustainable designs. This talk highlights cutting-edge trends in low-power AI hardware for Edge applications—vital for billions of autonomous systems facing strict energy limits. These technologies will power breakthroughs in Industry 4.0, robotics, personalized healthcare, and environmental sensing. We present a brain-inspired approach using ferromorphic chips—a term coined at EPFL—featuring novel memristive devices that combine ferroelectricity in doped high-k dielectrics and 2D semiconductors to enable biologically plausible synapses, multi-bit memory, and on-chip energy storage.

15:30 - 16:00

Coffee break

16:00 - 16:30

Reconfigurable and Ultrafast Non-Volatile Floating-gate Memory Based on van der Waals Heterostructures for Multifunctional Computing

Minh Chien Nguyen (Sungkyunkwan University, KR)

Floating gate memory dominates the non-volatile memory market due to its high density, stability, and low fabrication cost. However, its limited program speed and the physical separation between processing and memory units in the von Neumann architecture pose significant challenges for next-generation neuromorphic computing, which demands high-speed, low-power data processing. Two-dimensional (2D) materials offer promising solutions owing to their atomic thickness, high carrier mobility, and excellent electrostatic control, enabling ultra-scaled devices with minimized memory-logic distances. However, conventional 2D memory devices are typically limited by fixed carrier types, reducing their suitability for complementary in-memory computing architectures. In this work, we present a reconfigurable floating-gate memory (R-FGM) device based on WSe₂/h-BN/graphene van der Waals heterostructures. The device enables dynamic switching between n-type and p-type operation and demonstrates outstanding performance metrics, including a 30 ns program/erase speed, data retention exceeding 10⁴ s, endurance beyond 10⁵ cycles, and multi-level storage with up to 7-bit resolution. These results highlight its potential for multifunctional, high-performance neuromorphic computing systems.

16:30 - 17:00

The Role of Point and Extended Defects in 2D-Materials Based Memristors for Neuromorphic Computing: An Atomistic Study

Mohit D. Ganeriwala (University of Granada, ES)

2D materials-based memristive devices are rapidly emerging as a groundbreaking solution for the next generation of memristive architectures for neuromorphic computing, driven by their exceptional properties—low power consumption, ultra-fast switching, compatibility with flexible substrates, and remarkable scalability through atomically thin layers. Despite these compelling advantages, the full potential of 2D materials-based memristors remains largely untapped, primarily due to performance variability arising from the stochastic nature of resistance switching and a lack of comprehensive understanding of the underlying physical processes. In this talk, I will share results from atomistic simulations that investigate the critical role of intrinsic point defects and grain boundaries in the formation of conductive channels. These findings offer new insights that challenge existing assumptions about memristive mechanisms, prompting a rethinking of the conventional models.2D materials-based memristive devices are rapidly emerging as a groundbreaking solution for the next generation of memristive architectures for neuromorphic computing, driven by their exceptional properties—low power consumption, ultra-fast switching, compatibility with flexible substrates, and remarkable scalability through atomically thin layers. Despite these compelling advantages, the full potential of 2D materials-based memristors remains largely untapped, primarily due to performance variability arising from the stochastic nature of resistance switching and a lack of comprehensive understanding of the underlying physical processes. In this talk, I will share results from atomistic simulations that investigate the critical role of intrinsic point defects and grain boundaries in the formation of conductive channels. These findings offer new insights that challenge existing assumptions about memristive mechanisms, prompting a rethinking of the conventional models.

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17:00 - 17:30

Multi-scale simulations of 2D material-based memristors

Marian Damiano (University of Pisa, IT)

Two-dimensional materials are promising candidates for memristive devices. In this talk, we present recent advancements on multi-scale simulations of 2D material-based memristors, combining ab-initio (first-principles) calculations of the materials' properties with quantum transport simulations. This approach provides insights into the physical mechanisms that govern the behavior of these devices.

BIOSKETCHES

Max C. Lemme (Chair)

Max C. Lemme (M’00–SM’06- F’25) received the Dipl.-Ing. and Dr.-Ing. degrees in electrical engineering from RWTH Aachen University, Aachen, Germany. He is currently a Professor of Electronic Devices at RWTH Aachen University and the Director of the non-profit research institute AMO GmbH, Aachen. His research interests include electronic, optoelectronic, photonic, and nanoelectromechanical devices made from novel materials like graphene, 2D materials, or perovskites. He aims to integrate these materials into the silicon technology platform for future applications in microelectronics and neuromorphic and quantum computing. He received the German BMBF NanoFutur award in 2006, the Heisenberg Professorship of the German Research Foundation, an ERC Grant in 2012, and an ERC Proof-of-Concept Grant in 2018. He co-founded Black Semiconductor GmbH in Aachen in 2019, became RWTH Fellow in 2024, and an IEEE Fellow in 2025.

Marian Damiano

Marian Damiano is a Junior Researcher (Italian L.240/10 "RTD-a") of Theoretical Condensed Matter Physics at the University of Pisa. He earned his PhD in Physics from the University of Genoa in 2015 and has been a postdoctoral researcher at both the Autonomous University of Barcelona, Spain and the University of Pisa. His research focuses on transport properties in nanoelectronic devices, particularly 2D materials and their heterostructures, exploring spin and valley degrees of freedom, as well as flexible electronics. He employs multiscale simulation approaches, ranging from ab-initio methods to device-level current-voltage analysis.

Mohit Ganeriwala

Dr. Mohit Ganeriwala is a Postdoctoral Fellow at the University of Granada, Spain, and the recipient of a Marie Skłodowska-Curie Fellowship. He completed his Ph.D. in Semiconductor Device Modeling and M.Tech. in Microelectronics at the Indian Institute of Technology (IIT) Gandhinagar, India, where he was awarded the Institute Gold Medal and the Outstanding Research Award. Prior to his current position, he worked as a Principal Engineer at GLOBALFOUNDRIES, specializing in compact modeling and advanced device characterization. His research spans multi-scale simulations and characterization of two-dimensional (2D) materials for brain-inspired neuromorphic computing and modeling of multi-gate nanoscale transistors.

​​Adrian M. Ionescu

​​Adrian M. Ionescu is head of the Nanoelectronic Devices Laboratory (NanoLab) in the School of Engineering of EPFL, Lausanne, Switzerland. His research focuses in advanced nanoelectronics, with special emphasis on the technology, design, and modelling of nanoscale solid-state devices. He has pioneered breakthrough nanoelectronic technologies such as steep slope and phase change devices, integrated biosensors, and RF MEMS resonators for energy-efficient Edge AI and Internet of Things applications. He has a publication record over 500 articles in renowned journals and conferences, and is an IEEE Fellow. In 2024 he received the IEEE Technical Field Cledo Brunetti Award, ‘for leadership and contributions to the field of energy-efficient steep slope devices and technologies’.

Minh Chien Nguyen

Minh Chien Nguyen received his B.S. degree in Materials Engineering from Ho Chi Minh City University of Technology, Vietnam, in 2022. Currently, he is a combined Master's and Ph.D. student under the supervision of Prof. Woo Jong Yu at Sungkyunkwan University, Republic of Korea, since 2022. His current research interests focus on device engineering based on 2D materials for next-generation in-sensor and in-memory computing beyond the von Neumann architecture. Since 2024, he has authored more than 15 peer-reviewed publications.

Sungju Ryu

Sungju Ryu is currently an associate professor in the department of electronic engineering at Sogang University where he is focusing on hardware-software co-design of neural networks and processing-in-memory. He received PhD from Pohang University of Science and Technology in 2021 and BS from Pusan National University in 2015.

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