Bejan Hamawandi

Scopus Publications

Synergistic enhancement of Bi2Te3/Sb2Te3–PMMA thermoelectric generators via dithiol-assisted conductivity and FEM-based geometry optimization
Bejan Hamawandi, José F. Serrano-Claumarchirant, Adem B. Ergül, Kaspars Pudzs, Inga Pudza, Parva Parsa, Metehan Kirsanli, Oskars Bitmets, Muhammet S. Toprak
Results in Engineering, 2026
Enhanced Stability of Water-Processed Sb2Te3: PEO Thermoelectric Hybrids via Thiol-Based Surface Functionalization
Oskars Bitmets, Bejan Hamawandi, Raitis Grzibovskis, Jose Francisco Serrano Claumarchirant, Muhammet S. Toprak, Kaspars Pudzs
Sustainable Chemistry, 2025
This study explores the development of a water-based hybrid thermoelectric (TE) material composed of Sb2Te3 nanoparticles (NPs) and polyethylene oxide (PEO). Sb2Te3 NPs were synthesized via the microwave-assisted colloidal route, where X-ray diffraction confirmed the purity and quality of the Sb2Te3 NPs. Key properties, including the Seebeck coefficient (S), electrical conductivity (σ), power factor (PF), and long-term stability, were studied. X-ray photoelectron spectroscopy (XPS) analysis revealed that exposure to water and oxygen leads to NP oxidation, which can be partially mitigated by hydrochloric acid (HCl) treatment, though this does not halt ongoing oxidation. Scanning electron microscopy (SEM) images displayed a percolation network of NPs within the PEO matrix. While the initial σ was high, a decline occurred over eight weeks, resulting in similar conductivity among all samples. The effect of surface treatments, such as 1,6-hexanedithiol (HDT), was demonstrated to enhance long-term stability. The results highlight both the challenges and potential of Sb2Te3/PEO hybrids for TE applications, especially regarding oxidation and durability, and underscore the need for improved synthesis and processing techniques to optimize their performance. This study provides valuable insights for the design of next-generation hybrid TE materials and emphasizes the importance of surface chemistry control in polymer–inorganic nanocomposites.
OPTIMISING PHOTOTHERMAL SILVER NANOPARTICLES FOR EFFICIENT LIGHT-ACTIVATED SHAPE MEMORY RESPONSE IN AgNP-POLYMER COMPOSITES
K. Krizmane, M. Dile, E. Einbergs, V. Vitola, A. Knoks, B. Hamawandi, A. Zolotarjovs
Latvian Journal of Physics and Technical Sciences, 2025
The study presents the synthesis and integration of silver nanoparticles (AgNPs) into a polyurethane (PU) matrix to create a light-activated shape memory polymer (SMP). AgNPs were synthesized using a microwave-assisted solvothermal method with polyvinylpyrrolidone (PVP) as a stabilizer, where varying the molecular weight of PVP and the AgNO₃/PVP ratio influenced nanoparticle size and distribution. Characterisation via scanning electron microscopy (SEM) and dynamic light scattering (DLS) confirmed the irregular morphology and size consistency of AgNPs, with smaller particles exhibiting narrow size distributions and enhanced photothermal response. Among the samples, PVP with an average molecular weight (M n ) of 10,000 and an AgNO₃/PVP mole ratio of 14.7 demonstrated optimal UV-blue light absorption, which facilitated efficient local heating under irradiation. The AgNP-PU composite exhibited a reliable shape memory effect when exposed to UV-blue light.
Nanodiamonds Interact with Primary Human Macrophages and Dendritic Cells Evoking a Vigorous Interferon Response
Tomas Malina, Jasreen Kaur, Sebastin Martin, Audrey Gallud, Shintaro Katayama, Arianna Gazzi, Marco Orecchioni, Martin Petr, Martin Šrejber, Lars Haag, Bejan Hamawandi, Muhammet S. Toprak, Juha Kere, Lucia Gemma Delogu, Bengt Fadeel
ACS Nano, 2025
Nanodiamonds (NDs) display several attractive features rendering them useful for medical applications such as drug delivery. However, the interactions between NDs and the immune system remain poorly understood. Here, we investigated amino-, carboxyl-, and poly(ethylene glycol) (PEG)-terminated NDs with respect to primary human immune cells. We applied cytometry by time-of-flight (CyToF) to assess the impact on peripheral blood mononuclear cells at the single-cell level, and observed an expansion of plasmacytoid dendritic cells (pDCs) which are critically involved in antiviral responses. Subsequent experiments demonstrated that the NDs were actively internalized, leading to a vigorous type I interferon response involving endosomal Toll-like receptors. ND-NH2 and ND-COOH were more potent than ND-PEG, as evidenced by using TLR reporter cell lines. Computational studies demonstrated that NDs interacted with the ligand-binding domains of TLR7 and TLR9 with high affinity though this was less pronounced for ND-PEG. NDs with varying surface functionalities were also readily taken up by macrophages. To gain further insight, we performed RNA sequencing of a monocyte-like cell line exposed to NDs, and found that the phagosome maturation pathway was significantly affected. Indeed, evidence for lysosomal hyperacidification was obtained in dendritic cells and macrophages exposed to NDs. Moreover, using a reporter cell line, NDs were found to impinge on autophagic flux. However, NDs did not affect viability of any of the cell types studied. This study has shown that NDs subvert dendritic cells leading to an antiviral-like immune response. This has implications not only for drug delivery but also for anticancer vaccines using NDs.
A rapid synthesis of magnetic-core mesoporous silica-shell nanostructures - as potential theranostic agents - by means of microwave irradiation and the atrane method
M. Dolores Garrido, Bejan Hamawandi, José Francisco Serrano-Claumarchirant, Giovanni Marco Saladino, Adem B. Ergül, M. Dolores Marcos, José Vicente Ros-Lis, Pedro Amorós, Muhammet S. Toprak
Nanoscale, 2025
A unique scheme to design theranostic materials by using energy-efficient MW-heating, the atrane method, and efficient green chemical extraction routes.
Comparative Techno-Economic Analysis of Gray Hydrogen Production Costs: A Case Study
Azam Beigi Kheradmand, Mahdi Heidari Soureshjani, Mehdi Jahangiri, Bejan Hamawandi
Sustainability Switzerland, 2025
Despite Iran’s considerable renewable energy (RE) potential and excellent wind capacity and high solar radiation levels, these sources contribute only a small fraction of the country’s total energy production. This paper addresses the techno-economic viability of gray hydrogen production by these renewables, with a particular focus on solar energy. Given the considerable potential of solar energy and the strategic location of Shahrekord, it would be an optimal site for a hydrogen generation plant integrated with a solar field. HOMER Pro 3.18.3 software was utilized to model and optimize the levelized cost of hydrogen (LCOH) of steam reforming using different hydrocarbons in various scenarios. The results of this study indicate that natural gas (NG) reforming represents the most cost-effective method of gray hydrogen production in this city, with an LCOH of −0.423 USD/kg. Other hydrocarbons such as diesel, gasoline, propane, methanol, and ethanol have a price per kilogram of produced hydrogen as follows: USD −0.4, USD −0.293, USD 1.17, USD 1.48, and USD 2.15. In addition, integrating RE sources into hydrogen production was found to be viable. Moreover, by implementing RE technologies, CO2 emissions can be significantly reduced, and energy security can be achieved.
A comparative study on the surface chemistry and electronic transport properties of Bi2Te3 synthesized through hydrothermal and thermolysis routes
Hazal Batili, Bejan Hamawandi, Adem Björn Ergül, Rafal Szukiewicz, Maciej Kuchowicz, Muhammet S. Toprak
Colloids and Surfaces A Physicochemical and Engineering Aspects, 2024
Bismuth telluride-Bi2Te3 is the most promising material for harvesting thermal energy near room temperature. There are numerous works on Bi2Te3 report- ing significantly different transport properties, with no clear connection to the synthetic routes used and the resultant surface chemistry of the synthesized materials. It is of utmost importance to characterize the constituent parti- cles’ surface and interfaces to get a better understanding of their influence on the transport properties, that will significantly improve the material design - starting from the synthesis step. Electrophoretic deposition (EPD) is a promis- ing technique, enabling the formation of thick films using colloidally stabilized suspensions of pre-made nanoparticles, which can enable the study of the ef- fect of surface chemistry, in connection to the synthetic route, on the material’s transport properties. In order to explore the differences in surface chemistry and the resultant transport properties in relation to the synthetic scheme used, here we report on Bi2Te3 synthesised through two wet-chemical routes in water (Hydro-) and oil (Thermo-) as the solvents. XRD analysis showed a high phase purity of the synthesized materials. SEM analysis revealed hexagonal platelet morphology of the synthesized materials, which were then used to fabricated EPD. Characterization of the EPD films reveal significant differences between the Hydro- and Thermo-Bi2Te3 samples, leading to about 8 times better electri- cal conductivity values in the Thermo-Bi2Te3. XPS analysis revealed a higher metal oxides content in the Hydro- Bi2Te3 sample, contributing to the formation of a resistive layer, thus lowering the electrical conductivity. Arrhenius plots of electrical conductivity vs inverse temperature was used for the estimation of the activation energy for conduction, revealing a higher activation energy need for the Hydro- Bi2Te3 film, in agreement with the resistive barrier oxide content. Both the samples exhibited negative Seebeck coefficient (S) in the order of 160 - 170 mV/K. The small difference in S of Hydro- and Themo-Bi2Te3 films was explained by the effective medium theory, revealing that the magnitude of S is linearly correlated with the surface oxide content. Based on the findings, TE materials synthesized through thermolysis route is recommended for further studies using soft treatment/processing of pre-made TE materials. EPD plat- form presented here is shown to clearly expose the differences in the electronic transport in connection to nanoparticle surface chemistry, proving a promis- ing methodology for the evaluation of morphology, size and surface chemistry dependence of electronic transport for a wide range of materials.
Tuning the transformation and cellular signaling of 2D titanium carbide MXenes using a natural antioxidant
Tomas Malina, Bejan Hamawandi, Muhammet S. Toprak, Lin Chen, Jonas Björk, Jie Zhou, Johanna Rosen, Bengt Fadeel
Matter, 2024
2D titanium carbide (Ti3C2) MXenes have emerged as promising candidates for biomedical applications. However, the biological properties of these materials are poorly understood. Moreover, MXenes are prone to oxidation under ambient conditions. Here, we show that glutathione (GSH), a natural antioxidant present in millimolar concentrations in the cytosol of most cells, protects MXenes from oxidation in aqueous suspensions while preserving the biocompatibility of the material. Reactive molecular dynamics (RMD) simulations confirm that GSH protects MXenes. Moreover, we provide evidence of the intracellular biotransformation of Ti3C2 MXenes to the rutile form of TiO2, and we show that GSH tunes the transformation process, resulting in the secretion of pro-inflammatory interleukin (IL)-1β through a non-canonical, elastase-dependent pathway. These results are important because they shed new light on the biotransformation of Ti3C2 MXenes and its ramifications for cellular signaling.
Electrophoretic assembly and electronic transport properties of rapidly synthesized Sb2Te3 nanoparticles
Hazal Batili, Bejan Hamawandi, Parva Parsa, Adem Björn Ergül, Rafal Szukiewicz, Maciej Kuchowicz, Muhammet Sadaka Toprak
Applied Surface Science, 2023
With the recent advances in thermoelectric (TE) technology, there is an increasing demand to develop thick films that would enable large-scale TE devices. Assembly of TE-films from size and morphology-controlled nanoparticles has been a challenging issue that can be addressed by the use of electrophoretic deposition (EPD) technique. In this work, morphology-controlled Sb2Te3 nanoparticles were synthesized through microwave-assisted thermolysis, which were subsequently used for EPD of TE films on specially developed glass-substrates. The electronic transport properties were measured in the temp-range of 22-45 °C. The as-made EPD films showed a high initial resistance, ascribed to high porosity and the presence of surface oxide/passivating layers. The impact of two types of small organic molecules -as hexanedithiol and dodecanethiol, on the electronic transport was investigated, resulting in a significant improvement in the conductivity of the films. The XPS analysis suggests that the thiols bind to the surface of nanoparticles through formation of sulfides. Seebeck coefficient in the range of +160 to +190 µV/K was measured, revealing the p-type transport through the deposited films. Finally, a power factor of about 2.5 µW/K2.m was estimated the first time for p-type EPD films, revealing the potential of the developed nanoparticles and substrate, the small molecule additives and the EPD process presented in this work.
Characterization and photocatalytic activity of CoCr2O4/g-C3N4 nanocomposite for water treatment
Weiqing Ning, Yuan Li, Yu Fang, Fang Li, Reza Pournajaf, Bejan Hamawandi
Environmental Science and Pollution Research, 2023
Synthesis and Characterization of Hydrogel Droplets Containing Magnetic Nano Particles, in a Microfluidic Flow-Focusing Chip
Fereshteh Moharramzadeh, Seyyed Ali Seyyed Ebrahimi, Vahid Zarghami, Zahra Lalegani, Bejan Hamawandi
Gels, 2023
Investigation of Microstructure and Magnetic Properties of CH4 Heat Treated Sr-Hexaferrite Powders during Re-Calcination Process
Ramin Dehghan, Seyyed Ali Seyyed Ebrahimi, Zahra Lalegani, Bejan Hamawandi
Magnetochemistry, 2023
Evaluation of Mechanical Properties of Glass Ionomer Cements Reinforced with Synthesized Diopside Produced via Sol–Gel Method
Ali Maleki Nojehdehi, Farina Moghaddam, Bejan Hamawandi
Materials, 2023
The Effect of Adding V and Nb Microalloy Elements on the Bake Hardening Properties of ULC Steel before and after Annealing
Afshin Ghanaei, Hossein Edris, Hossein Monajati, Bejan Hamawandi
Materials, 2023
Microstructure, Mechanical and Thermal Properties of Al/Cu/SiC Laminated Composites, Fabricated by the ARB and CARB Processes
Jie Luo, Rashid Khattinejad, Amirhossein Assari, Moslem Tayyebi, Bejan Hamawandi
Crystals, 2023
Silver nanoparticles with excellent biocompatibility block pseudotyped SARS-CoV-2 in the presence of lung surfactant
Govind Gupta, Bejan Hamawandi, Daniel J. Sheward, Ben Murrell, Leo Hanke, Gerald McInerney, Magda Blosi, Anna L. Costa, Muhammet S. Toprak, Bengt Fadeel
Frontiers in Bioengineering and Biotechnology, 2022
Thermal cycles behavior and microstructure of AZ31/SiC composite prepared by stir casting
Seyed Fereidon Mousavi, Hassan Sharifi, Morteza Tayebi, Bejan Hamawandi, Yashar Behnamian
Scientific Reports, 2022
Covalently-Bonded Coating of L-Arginine Modified Magnetic Nanoparticles with Dextran Using Co-Precipitation Method
Behnam Azadpour, Faezeh Kashanian, Mehran Habibi-Rezaei, Seyyed Ali Seyyed Ebrahimi, Roozbeh Yazdanpanah, Zahra Lalegani, Bejan Hamawandi
Materials, 2022
Anisotropic Magnetoresistance Evaluation of Electrodeposited Ni80Fe20 Thin Film on Silicon
Payam Khosravi, Seyyed Ali Seyyed Ebrahimi, Zahra Lalegani, Bejan Hamawandi
Micromachines, 2022
Different Stages of Phase Transformation in the Synthesis of Nanocrystalline Sr-Hexaferrite Powder Prepared by a Gaseous Heat Treatment and Re-Calcination Method
Ramin Dehghan, Seyyed Ali Seyyed Ebrahimi, Zahra Lalegani, Bejan Hamawandi
Nanomaterials, 2022
The Effects of the Addition of Polyurethane–MgO Nanohybrids on the Mechanical Properties of Ordinary Portland Cement Paste
Yu Fang, Weiqing Ning, Yuan Li, Fang Li, Reza Pournajaf, Bejan Hamawandi
Nanomaterials, 2022
Hydrophobic Magnetite Nanoparticles for Bioseparation: Green Synthesis, Functionalization, and Characterization
Vahid Alimohammadi, Seyyed Ali Seyyed Ebrahimi, Faezeh Kashanian, Zahra Lalegani, Mehran Habibi-Rezaei, Bejan Hamawandi
Magnetochemistry, 2022
Stress-Induced Grain Refinement in Hard Magnetic Mn52Al45.7C2.3 Fabricated Using the Ball-Milling Method
Seyed Nourallah Attyabi, Seyed Mohammad Ali Radmanesh, Seyyed Ali Seyyed Ebrahimi, Hossein Dehghan, Zahra Lalegani, Bejan Hamawandi
Materials, 2022
Performance Analysis of Anode-Supported Solid Oxide Fuel Cells: A Machine Learning Approach
Mohammad Hossein Golbabaei, Mohammadreza Saeidi Varnoosfaderani, Arsalan Zare, Hirad Salari, Farshid Hemmati, Hamid Abdoli, Bejan Hamawandi
Materials, 2022
Microstructure, Fractography, and Mechanical Properties of Hardox 500 Steel TIG-Welded Joints by Using Different Filler Weld Wires
Zhaoyang Zuo, Ma Haowei, Mahdireza Yarigarravesh, Amir Hossein Assari, Moslem Tayyebi, Morteza Tayebi, Bejan Hamawandi
Materials, 2022
Eco design for Ag-based solutions against SARS-CoV-2 and E. coli
Anna Luisa Costa, Magda Blosi, Andrea Brigliadori, Ilaria Zanoni, Simona Ortelli, Felice Carlo Simeone, Serena Delbue, Sarah D'Alessandro, Silvia Parapini, Claudia Vineis, Alessio Varesano, Muhammet S. Toprak, Bejan Hamawandi, Davide Gardini
Environmental Science Nano, 2022
Fabrication of TiFe-Based Electrodes Using High-Energy Ball Mill with Mn Additive for NiMH Batteries
Amir Zali, Seyed Farshid Kashani-Bozorg, Zahra Lalegani, Bejan Hamawandi
Batteries, 2022
Reverse Magnetization Behavior Investigation of Mn-Al-C-(α-Fe) Nanocomposite Alloys with Different α-Fe Content Using First-Order Reversal Curves Analysis
Seyed Nourallah Attyabi, Seyyed Ali Seyyed Ebrahimi, Zahra Lalegani, Bejan Hamawandi
Nanomaterials, 2022
Characterization of the Nano-Rod Arrays of Pyrite Thin Films Prepared by Aqueous Chemical Growth and a Subsequent Sulfurization
Mohammad Talaeizadeh, Seyyed Ali Seyyed Ebrahimi, Payam Khosravi, Bejan Hamawandi
Materials, 2022
On the electrophoretic deposition of Bi2Te3 nanoparticles through electrolyte optimization and substrate design
Hazal Batili, Bejan Hamawandi, Adem Björn Ergül, Muhammet Sadaka Toprak
Colloids and Surfaces A Physicochemical and Engineering Aspects, 2022
Microstructural Evolution during Accelerated Tensile Creep Test of ZK60/SiCp Composite after KoBo Extrusion
Yang-Yang Wang, Chen Jia, Morteza Tayebi, Bejan Hamawandi
Materials, 2022
The Effect of Trehalose Coating for Magnetite Nanoparticles on Stability of Egg White Lysozyme
Asma Lajmorak, Seyyed Ali Seyyed Ebrahimi, Fatemeh Yazdian, Zahra Lalegani, Bejan Hamawandi
International Journal of Molecular Sciences, 2022
Targeted dielectric coating of silver nanoparticles with silica to manipulate optical properties for metasurface applications
Z. Lalegani, S.A. Seyyed Ebrahimi, B. Hamawandi, L. La Spada, H. Batili, M.S. Toprak
Materials Chemistry and Physics, 2022
The Effect of Eco-Friendly Inhibitors on the Corrosion Properties of Concrete Reinforcement in Harsh Environments
Rui’E Guo, Qian Zhang, ZaiXing Wang, Morteza Tayebi, Bejan Hamawandi
Materials, 2022
Thermoelectric Inks and Power Factor Tunability in Hybrid Films through All Solution Process
José F. Serrano-Claumarchirant, Bejan Hamawandi, Adem B. Ergül, Andrés Cantarero, Clara M. Gómez, Pankaj Priyadarshi, Neophytos Neophytou, Muhammet S. Toprak
ACS Applied Materials and Interfaces, 2022
Tribological Characterization of Reinforced Fe Matrix Composites with Hybrid Reinforcement of C, Cu, and SiC Particulates
Azam Beigi Kheradmand, Mohammad Reza Fattahi, Morteza Tayebi, Bejan Hamawandi
Crystals, 2022
Effect of Thermomechanical Treatment of Al-Zn-Mg-Cu with Minor Amount of Sc and Zr on the Mechanical Properties
Azam Beigi Kheradmand, Shamseddin Mirdamadi, Zahra Lalegani, Bejan Hamawandi
Materials, 2022
Functional Coatings for X-ray Fluorescent Nanoparticles
G. M. Saladino, N. I. Kilic, K. Shaker, Y. Li, B. Hamawandi, C. Vogt, B. Brodin, M. Svenda, I. Yazgan, H. M. Hertz, M. S. Toprak
Proceedings of the International Conference of Theoretical and Applied Nanoscience and Nanotechnology, 2022
Quantitative conversion of biomass in giant DNA virus infection
Mikael Kördel, Martin Svenda, Hemanth K. N. Reddy, Emelie Fogelqvist, Komang G. Y. Arsana, Bejan Hamawandi, Muhammet S. Toprak, Hans M. Hertz, Jonas A. Sellberg
Scientific Reports, 2021
Carbon quantum dots conjugated rhodium nanoparticles as hybrid multimodal contrast agents
Giovanni M. Saladino, Nuzhet I. Kilic, Bertha Brodin, Bejan Hamawandi, Idris Yazgan, Hans M. Hertz, Muhammet S. Toprak
Nanomaterials, 2021
Minute-made, high-efficiency nanostructured Bi2Te3 via high-throughput green solution chemical synthesis
Bejan Hamawandi, Hazal Batili, Moon Paul, Sedat Ballikaya, Nuzhet I. Kilic, Rafal Szukiewicz, Maciej Kuchowicz, Mats Johnsson, Muhammet S. Toprak
Nanomaterials, 2021
Thermoelectric performance of Cu2Se doped with rapidly synthesized gel-like carbon dots
Cagri Y. Oztan, Bejan Hamawandi, Yiqun Zhou, Sedat Ballikaya, Muhammet S. Toprak, Roger M. Leblanc, Victoria Coverstone, Emrah Celik
Journal of Alloys and Compounds, 2021
Multi-objective optimization of concentrated Photovoltaic-Thermoelectric hybrid system via non-dominated sorting genetic algorithm (NSGA II)
Aminu Yusuf, Nevra Bayhan, Hasan Tiryaki, Bejan Hamawandi, Muhammet S. Toprak, Sedat Ballikaya
Energy Conversion and Management, 2021
A versatile strategy to synthesize sugar ligand coated superparamagnetic iron oxide nanoparticles and investigation of their antibacterial activity
Giovanni Marco Saladino, Bejan Hamawandi, Mehmet Ali Demir, Idris Yazgan, Muhammet Sadaka Toprak
Colloids and Surfaces A Physicochemical and Engineering Aspects, 2021
The Effect of Crystal Mismatch on the Thermoelectric Performance Enhancement of Nano Cu2Se
Yunus Demirci, Aminu Yusuf, Bejan Hamawandi, Muhammet S. Toprak, Sedat Ballikaya
Frontiers in Materials, 2021
Heat transfer study of enhanced additively manufactured minichannel heat exchangers
Hamidreza Rastan, Amir Abdi, Bejan Hamawandi, Monika Ignatowicz, Josua P. Meyer, Björn Palm
International Journal of Heat and Mass Transfer, 2020
Modeling, design, and synthesis of gram-scale monodispersed silver nanoparticles using microwave-assisted polyol process for metamaterial applications
Z. Lalegani, S.A. Seyyed Ebrahimi, B. Hamawandi, L. La Spada, M.S. Toprak
Optical Materials, 2020
A Comparative Study on the Thermoelectric Properties of Bismuth Chalcogenide Alloys Synthesized through Mechanochemical Alloying and Microwave-Assisted Solution Synthesis Routes
Bejan Hamawandi, Hamta Mansouri, Sedat Ballikaya, Yunus Demirci, Martina Orlovská, Nafiseh Bolghanabadi, Seyed Abdolkarim Sajjadi, Muhammet S. Toprak
Frontiers in Materials, 2020
Click chemical assembly and validation of bio-functionalized superparamagnetic hybrid microspheres
Giovanni M. Saladino, Bejan Hamawandi, Carmen Vogt, Gunaratna K. Rajarao, Muhammet S. Toprak
Applied Nanoscience Switzerland, 2020
Composition tuning of nanostructured binary copper selenides through rapid chemical synthesis and their thermoelectric property evaluation
Bejan Hamawandi, Sedat Ballikaya, Mikael Råsander, Joseph Halim, Lorenzo Vinciguerra, Johanna Rosén, Mats Johnsson, Muhammet S. Toprak
Nanomaterials, 2020
Facile solution synthesis, processing and characterization of n-and p-type binary and ternary Bi-Sb tellurides
Bejan Hamawandi, Sedat Ballikaya, Hazal Batili, Viking Roosmark, Martina Orlovská, Aminu Yusuf, Mats Johnsson, Rafal Szukiewicz, Maciej Kuchowicz, Muhammet S. Toprak
Applied Sciences Switzerland, 2020
Heat transfer investigation of an additively manufactured minichannel heat exchanger
Hamidreza Rastan, Amir Abdi, Monika Ignatowicz, Bejan Hamawandi, Poh Seng Lee, Björn Palm
ASME 2019 17th International Conference on Nanochannels Microchannels and Minichannels Icnmm 2019, 2019
A comparison of power factor in n and p-type SiGe nanowires for thermoelectric applications
Mohammad Noroozi, Bejan Hamawandi, Ganesh Jayakumar, Katayoun Zahmatkesh, Henry H Radamson, Muhammet S Toprak
Journal of Nanoscience and Nanotechnology, 2017
Photocatalytic degradation of organic dyes and enhanced mechanical properties of PAN/CNTs composite nanofibers
Alaa Mohamed, Samy Yousef, Mohammed Ali Abdelnaby, T.A. Osman, B. Hamawandi, M.S. Toprak, M. Muhammed, A. Uheida
Separation and Purification Technology, 2017
Unprecedented thermoelectric power factor in SiGe nanowires field-effect transistors
Mohammad Noroozi, Ganesh Jayakumar, Katayoun Zahmatkesh, Jun Lu, Lars Hultman, Mounir Mensi, Saulius Marcinkevicius, Bejan Hamawandi, Mohsen Y. Tafti, Adem B. Ergül, Zoran Ikonic, Muhammet S. Toprak, Henry H. Radamson
Ecs Journal of Solid State Science and Technology, 2017
Electrical properties of sub-100 nm SiGe nanowires
B. Hamawandi, M. Noroozi, G. Jayakumar, A. Ergül, K. Zahmatkesh, M.S. Toprak, H.H. Radamson
Journal of Semiconductors, 2016
Fabrication and thermoelectric characterization of GeSn nanowires
M. Noroozi, B. Hamawandi, M.S. Toprak, H. H. Radamson
Ulis 2014 2014 15th International Conference on Ultimate Integration on Silicon, 2014
Growth of GeSnSiC layers for photonic applications
A. Jamshidi, M. Noroozi, M. Moeen, A. Hallén, B. Hamawandi, J. Lu, L. Hultman, M. Östling, H. Radamson
Surface and Coatings Technology, 2013

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