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Quantifying non-stabilizerness via information scrambling

Ahmadi, A. (author), Greplová, E. (author)

The advent of quantum technologies brought forward much attention to the theoretical characterization of the computational resources they provide. A method to quantify quantum resources is to use a class of functions called magic monotones and stabilizer entropies, which are, however, notoriously hard and impractical to evaluate for large...

journal article 2024

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Crashworthiness analysis of empty and foam-filled circular tubes with functionally graded thickness

Barzigar, Seyed Sajad (author), Ahmadi, Hamed (author), Liaghat, Gholamhossein (author), Seidi, Morteza (author), Mirzaali, Mohammad J. (author)

Thin-wall structures, particularly thin-walled tubes, play a critical role in load-bearing structures. Enhancing their ability to withstand crushing loads can significantly improve the overall damping efficiency of the system. Functionally graded thickness (FGT) is a promising approach for enhancing the load-bearing properties of thin-walled...

journal article 2024

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Comparison of Military Handbook and the FIDES Methodology for Failure Rate Estimation of Modular Multilevel Converters

Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)

Power electronics converters are crucial for power generation, transmission, and distribution. The modular multilevel converter (MMC) is highly valued for its ability to handle high power levels, versatility in reconfiguration, high efficiency through small-capacity submodules (SMs), and robust control capabilities. A failure of a power...

conference paper 2023

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Development of Reliable Power Electronic Systems using Real Time Digital Twin Based Power Hardware-in-the-Loop Testbed

Shekhar, A. (author), Rituraj, G. (author), van der Sande, Robin (author), Ahmadi, M. (author), Deshmukh, R.S. (author), Bauer, P. (author), Nougain, V. (author), Lekić, A. (author), Palensky, P. (author)

Reliable Power Electronic Systems (PES) are vital for enabling energy transition technologies of the future. Power hardware-in-the-Loop (PHIL) test bed can be used to validate such systems cost-effectively and time-efficiently. In general, the Real Time Digital Twin (RTDT) is a virtual representation of the PES and its operating environment that...

conference paper 2023

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Template-Assisted Mechanosynthesis Leading to Benchmark Energy Efficiency and Sustainability in the Production of Bifunctional Fe-N-C Electrocatalysts

Kosimov, Akmal (author), Alimbekova, Amina (author), Assafrei, Jurgen Martin (author), Ahmadi, Majid (author), Roohi, K. (author), Taheri, P. (author), Pinto, Sara M. (author), Cepitis, Ritums (author), Baptista, Antonio J. (author), Kongi, Nadezda (author)

Efficient and sustainable synthesis of performant metal/nitrogen-doped carbon (M-N-C) catalysts for oxygen reduction and evolution reactions (ORR/OER) is vital for the global switch to green energy technologies-fuel cells and metal-air batteries. This study reports a solid-phase template-assisted mechanosynthesis of Fe-N-C, featuring low-cost...

journal article 2023

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Biotransformation of micropollutants in moving bed biofilm reactors under heterotrophic and autotrophic conditions

Ahmadi, Navid (author), Abbasi, Mona (author), Torabian, Ali (author), van Loosdrecht, Mark C.M. (author), Ducoste, Joel (author)

We investigated the transformation of four pharmaceuticals (Diclofenac, Naproxen, Ibuprofen and Carbamazepine) in a moving bed biofilm reactor subjected to different COD/N ratios in four experimental phases. The shift from medium to high range COD/N ratio (i.e., 5:1 to 100:1) intensified the competition between heterotrophs and nitrifying...

journal article 2023

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Load Profile Based Reliability Assessment of IGBT Module in Full-bridge DC/DC Converter for Fast Charging of EVs

Kardan Halvaei, F. (author), Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)

EV Fast chargers are crucial to alleviate the driving range anxiety for E-mobility applications. A typical converter load profile consists of a short high-current pulse to rapidly refill the EV battery followed by a cooling-off period once the charging is completed. Power electronic components experience thermal cycles as a result, which can...

conference paper 2023

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Switch Voltage Rating Selection Considering Cost-Oriented Redundancy and Modularity-based Trade-offs in Modular Multilevel Converter

Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)

Modular Multilevel Converters (MMCs) find increasing applications in medium to high-voltage systems. In such systems, reliability-oriented selection of power electronic switches becomes essential because higher modularity implies an increased number of components. The trade-off between the impact of higher modularity on converter reliability...

journal article 2023

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Automated actual evapotranspiration estimation: Hybrid model of a novel attention based U-Net and metaheuristic optimization algorithms

Bafti, Alireza Ghaderi (author), Ahmadi, Arman (author), Abbasi, A. (author), Kamangir, Hamid (author), Jamali, Sadegh (author), Hashemi, Hossein (author)

Actual evapotranspiration (ET_a) plays a crucial role in the water and energy cycles of the earth. An accurate estimate of the ET_a is essential for management of the water resources, agriculture, and irrigation, as well as research on atmospheric variations. Despite the importance of accurate ET_a values,...

journal article 2023

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CFD modeling of the building integrated with a novel design of a one-sided wind-catcher with water spray: Focus on thermal comfort

Foroozesh, Jamal (author), Hosseini, S. H. (author), Ahmadian Hosseini, A. J. (author), Parvaz, F. (author), Elsayed, K. (author), Uygur Babaoğlu, Nihan (author), Hooman, K. (author), Ahmadi, G. (author)

The rising energy demand for buildings has enhanced public awareness of sustainable energy sources and technologies. In particular, natural ventilation systems such as wind-catchers have attracted considerable new attention. A new wind-catcher design with single-stage direct-air evaporative cooling was proposed for indoor air conditioning. An...

journal article 2022

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Reconfigurability, Modularity and Redundancy Trade-offs for Grid Connected Power Electronic Systems

Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)

Power electronic converters (PECs) are workhorses of emerging distribution networks. PEC interfaced grids can function as flexible power corridors facilitating compact and efficient energy exchange between distribution generation, load and storage elements. Introducing adequate Reconfigurability, Modularity, and Redundancy (RMR) in such PEC...

conference paper 2022

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Impact of the Various Components Consideration on Choosing Optimal Redundancy Strategy in MMC

Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)

Power electronics converters will play a crucial role in power grid expansion. Superior advantages offered by MMC make it the most popular candidate amongst various converter topologies. However, due to a large number of components installed within MMC, reliability analysis is an unavoidable task that needs to be carried out to maximize the MMC...

conference paper 2022

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A review of the methods of modeling multi-phase flows within different microchannels shapes and their applications

Abidi, Awatef (author), Ahmadi, Amir (author), Enayati, Mojtaba (author), Sajadi, S. Mohammad (author), Yarmand, H. (author), Ahmed, Arslan (author), Cheraghian, Goshtasp (author)

In industrial processes, the microtechnology concept refers to the operation of small devices that integrate the elements of operational and reaction units to save energy and space. The advancement of knowledge in the field of microfluidics has resulted in fabricating devices with different applications in micro and nanoscales. Micro-and nano...

review 2021

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Editors' Choice - Dealloying-Driven Cerium Precipitation on Intermetallic Particles in Aerospace Aluminium Alloys

Kosari, A. (author), Ahmadi, M. (author), Tichelaar, F.D. (author), Visser, P. (author), Gonzalez Garcia, Y. (author), Zandbergen, H.W. (author), Terryn, H.A. (author), Mol, J.M.C. (author)

Cerium-based compounds have been studied for decades as non-toxic candidates for the protection of aerospace aluminium alloys (AAs) like AA2024-T3. However, the complex heterogeneous microstructure of these alloys has hindered a thorough understanding of the subsequent stages of corrosion protection provided by this class of inhibitors. Thus,...

journal article 2021

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Infrared absorbance of vertically-aligned multi-walled CNT forest as a function of synthesis temperature and time

Mirza Gheytaghi, Amir (author), Ghaderi, M. (author), Vollebregt, S. (author), Ahmadi, M. (author), Wolffenbuttel, R.F. (author), Zhang, Kouchi (author)

In this paper, the growth of optimized vertically aligned multi-walled carbon nanotube (VA-MWCNT) forests by LPCVD method for use in a large-area absorber in infrared detectors is presented. The effect of synthesis temperature (500−700 °C) and time (1−10 min) on the optical absorption coefficient in the infrared (2−20 μm) is investigated by...

journal article 2020

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Do direct and inverse uncertainty assessment methods present the same results?

Ahmadi, Arman (author), Nasseri, M. (author)

Hydrological models are simplified imitations of natural and man-made water systems, and because of this simplification, always deal with inherent uncertainty. To develop more rigorous modeling procedures and to provide more reliable results, it is inevitable to consider and estimate this uncertainty. Although there are different approaches...

journal article 2020

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Continuous and pulsed selective laser melting of Ti6Al4V lattice structures: Effect of post-processing on microstructural anisotropy and fatigue behaviour

Karami, K. (author), Blok, A. (author), Weber, L.R.M. (author), Ahmadi, S.M. (author), Petrov, R.H. (author), Nikolic, Ksenija (author), Borisov, E.V. (author), Leeflang, M.A. (author), Ayas, C. (author), Zadpoor, A.A. (author), Mehdipour, M. (author), Reinton, T.E. (author), Popovich, V. (author)

Additive manufacturing technologies in general and laser powder bed fusion (L-PBF) in particular have been on the rise in different applications, including biomedical implants. The effects of the various L-PBF process parameters on the microstructure and properties of Ti6Al4V lattice structures have been studied before. However, the...

journal article 2020

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How Mn/Ni Ordering Controls Electrochemical Performance in High-Voltage Spinel LiNi_0.44Mn_1.56O₄with Fixed Oxygen Content

Aktekin, Burak (author), Massel, Felix (author), Ahmadi, M. (author), Valvo, Mario (author), Hahlin, Maria (author), Zipprich, Wolfgang (author), Marzano, Fernanda (author), Duda, Laurent (author), Younesi, Reza (author)

The crystal structure of LiNi0.5Mn1.5O4 (LNMO) can adopt either low-symmetry ordered (Fd3¯ m) or high-symmetry disordered (P4332) space group depending on the synthesis conditions. A majority of published studies agree on superior electrochemical performance of disordered LNMO, but the underlying reasons for improvement remain unclear due to...

journal article 2020

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Circular economy practices in the leather industry: A practical step towards sustainable development

Moktadir, Md Abdul (author), Ahmadi, Hadi Badri (author), Sultana, Razia (author), Zohra, Fatema Tuj (author), Liou, James J.H. (author), Rezaei, J. (author)

The concept of circular economy (CE), a recent popular global business trend, considerably minimizes waste and environmental pollution. However, studies exploring CE practices in the context of leather industry have been scant. To deal with this issue, this paper proposes a decision support framework for evaluating the challenges to CE...

journal article 2020

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Growth of multi-layered graphene on molybdenum catalyst by solid phase reaction with amorphous carbon

Ricciardella, F. (author), Vollebregt, S. (author), Kurganova, Evgenia (author), Giesbers, A.J.M. (author), Ahmadi, M. (author), Sarro, Pasqualina M (author)

A method to grow multi layers graphene (MLG) just by thermal annealing in an inert atmosphere is reported. A molybdenum (Mo) catalyst layer is used in combination with a solid amorphous carbon (a-C) source on top or below the Mo layer. The formation of MLG directly on top of the catalyst substrate surface is confirmed by Raman spectroscopy,...

journal article 2019