Mouadh BOUBAKER’s Post

📣 𝐩𝐫𝐞𝐬𝐞𝐧𝐭𝐢𝐧𝐠 𝐧𝐞𝐰 𝐫𝐞𝐬𝐞𝐚𝐫𝐜𝐡 𝐟𝐢𝐧𝐝𝐢𝐧𝐠𝐬! A multi-scale research on joining thermoplastics to thermoset composites by using UV light will be presented by PhD Researcher Liran Katz during the Fracture of Polymers, Composites and Adhesives conference on the 27th of March. The event is organized by the European Structural Integrity Society (ESIS) and will be held in Les Diablerets, Switzerland. The study, entitled '𝑨 𝒎𝒖𝒍𝒕𝒊-𝒔𝒄𝒂𝒍𝒆 𝒍𝒆𝒗𝒆𝒍 𝒔𝒕𝒖𝒅𝒚 𝒐𝒏 𝒕𝒉𝒆 𝒋𝒐𝒊𝒏𝒊𝒏𝒈 𝒐𝒇 𝑪/𝑷𝑨𝑬𝑲 𝒕𝒐 𝑪/𝑬𝒑𝒐𝒙𝒚 𝒗𝒊𝒂 𝒂 𝒎𝒂𝒕𝒆𝒓𝒊𝒂𝒍 𝒅𝒓𝒊𝒗𝒆𝒏 𝒂𝒑𝒑𝒓𝒐𝒂𝒄𝒉', aimed to design a robust and reliable joining methodology of the interface adhesion between thermoplastics and thermosets. The approach taken in Liran’s research allows in principle a cost effective, efficient solution for structural aerospace applications. In order to understand the underlying mechanisms required to create a robust and structural joint, the study was conducted on a multi-scale level. Read more: 👉 https://lnkd.in/eGAHTFJS #ESIS #thermoplastics #research #joining #materials #switzerland

Our recent research work, "Covalently Merging Ionic Liquids and Conjugated Polymers: A Molecular Design Strategy for Green Solvent-Processable Mixed Ion–Electron Conductors Toward High-Performing Chemical Sensors," has been published as a cover article in Advanced Functional Materials. This work presents polymeric mixed ionic–electronic conductors, consisting of charged monomers with ionic liquid-like pendant groups, which not only exhibit solubility in environmentally friendly solvents but also demonstrate long-term stability against humidity, high temperatures, and mechanical deformation. The immobilized ion species foster highly selective interactions of these polymers with nitrogen dioxide, paving the way for the development of stretchable sensing devices capable of functioning at exceptionally high temperatures. Please use this link to view our paper: https://lnkd.in/gapkyuei.

🆕 New article ▶ A novel methodology for designing Mono/Bi-slab X-band microwave absorbers of Carbon-Powder composites 🔬⚗️ 🔗  https://lnkd.in/ddgGPTV9 ⚙️ Developed by the IMA Instituto de Magnetismo Aplicado, Universidad Complutense de Madrid, Facultad de Ciencias Físicas, UCM, Instituto de Ciencia de Materiales de Madrid (ICMM - CSIC) and the BM25 SpLine The Spanish CRG Beamline 🔄 ✏ Researchers: Alberto Castellano, Elena Navarro Palma, Jesús López-Sánchez, Pilar MARIN PALACIOS 📌 This work introduces a methodology for the design of X-band microwave absorbers using carbon-graphite powder composites. The reflection loss (RL) is adjusted through variations in sample thickness, mono/bi-slab geometries, and effective dielectric constant. The impact of the particle size of the powders and the volume fraction (v.f.) of the composites on the effective dielectric permittivity has been systematically investigated. The Nicolson-Ross-Weir (NRW) conversion and the Birchak dielectric mixing model were employed. Optimal absorption conditions predicted by RL simulations were validated through experimental waveguide measurements for mono/bi-slab systems of paraffin-carbon composite samples. The mono-slabs with a particle size of 3.5 μm showed the best versatility for tailoring the RL in the X-band through v.f. variations while maintaining a fixed thickness of 2 mm. In addition, a bi-slab system…

John Lienhard, director of J-WAFS, co-authored a paper titled "Heat diffusion during thin-film composite membrane formation" published in Journal of Membrane Science and selected as Editor's Choice. The study presents a model to investigate how the thermal properties of materials affect interfacial temperatures in the fabrication of Thin-film Composite (TFC) membranes, which have revolutionized desalination and water treatment by dramatically increasing the energy efficiency and selectivity of reverse osmosis. The paper examines the temperature impact in different fabrication methods, finding that polymeric supports increase interfacial temperatures, while inorganic or metallic interlayers can significantly reduce them. The research aids in designing new TFC membranes by understanding the thermal behavior during the polymerization process. Read the paper here (free until March 29): https://lnkd.in/eCgP-Hpt

#NEWPUBLICATION.Alert: I'm excited to announce the publication of our latest research paper titled "Investigating Microstructural and Mechanical Behavior of DLP-Printed Nickel Microparticle Composites" in the Journal of Composite Science. https://lnkd.in/g4xeUpDp This study explores the intricate details of microstructural and mechanical properties in innovative DLP-printed nickel microparticle composites. A big thank you to my co-authors and collaborators for their invaluable contributions. Looking forward to your thoughts and feedback! Please cite in your upcoming works if its relevant to your research! #Research #Composites #MaterialScience #3DPrinting Universitas Gadjah Mada (UGM) iiaem jain university Jain (Deemed-to-be University)

✨ Exciting News✨ Our latest research paper has been selected as a 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐝 𝐀𝐫𝐭𝐢𝐜𝐥𝐞 by the 𝐽𝑜𝑢𝑟𝑛𝑎𝑙 𝑜𝑓 𝐴𝑝𝑝𝑙𝑖𝑒𝑑 𝑃ℎ𝑦𝑠𝑖𝑐𝑠! In this work entitled “𝐔𝐧𝐫𝐚𝐯𝐞𝐥𝐢𝐧𝐠 𝐢𝐦𝐩𝐚𝐜𝐭𝐬 𝐨𝐟 𝐩𝐨𝐥𝐲𝐜𝐫𝐲𝐬𝐭𝐚𝐥𝐥𝐢𝐧𝐞 𝐦𝐢𝐜𝐫𝐨𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞𝐬 𝐨𝐧 𝐢𝐨𝐧𝐢𝐜 𝐜𝐨𝐧𝐝𝐮𝐜𝐭𝐢𝐯𝐢𝐭𝐲 𝐨𝐟 𝐜𝐞𝐫𝐚𝐦𝐢𝐜 𝐞𝐥𝐞𝐜𝐭𝐫𝐨𝐥𝐲𝐭𝐞𝐬 𝐛𝐲 𝐜𝐨𝐦𝐩𝐮𝐭𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐡𝐨𝐦𝐨𝐠𝐞𝐧𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐦𝐚𝐜𝐡𝐢𝐧𝐞 𝐥𝐞𝐚𝐫𝐧𝐢𝐧𝐠” led by Dr. Xiang-Long Peng (XiangLong Peng), we explored how various polycrystalline microstructures affect effective ionic conductivity in ceramic electrolytes. We also developed a 𝐆𝐍𝐍-𝐛𝐚𝐬𝐞𝐝 𝐦𝐚𝐜𝐡𝐢𝐧𝐞 𝐥𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐦𝐨𝐝𝐞𝐥 that accurately predicts the effective conductivity of a given microstructure. Our work provides 𝐪𝐮𝐚𝐧𝐭𝐢𝐭𝐚𝐭𝐢𝐯𝐞 𝐠𝐮𝐢𝐝𝐞𝐥𝐢𝐧𝐞𝐬 to optimize ionic conductivity in oxide ceramics by tailoring their microstructures—an essential step toward designing high-performance ceramic electrolytes to be applied in Lithium-ion batteries and solid oxide fuel cells. Check out the full paper here: https://lnkd.in/eUUqW3dk TU Darmstadt - Institute of Materials Science #Research #Artificial_neural_networks #Machinelearning #Ceramics #Electrolytes

Metamaterials have exceptional properties with no equivalent in nature. They shaped the way we understand materials with unprecedented applications in biosensors, 5G and beyond antennas, energy harvesting, etc. I am pleased to share my research with you on Metamaterials. We recently published a research article on analytical design of metasurfaces titled “Equivalent circuit technique for designing split ring resonator based metasurfaces” in Engineering Research Express. Kindly follow the link: DOI 10.1088/2631-8695/ad7230

Exciting News! 📢 I'm thrilled to share that our latest research paper has been published! 🎉 Title: Acoustic radiation characteristics of shark skin inspired surface modified plates Summary: This paper aims to evaluate the acoustic radiation characteristics of thin plates featuring a layer of small-scale biomimetic shark skin type additive surface treatment. The shark skin dermal denticles are modeled as point masses arranged in a bi-directional pattern on both the upper and lower surfaces of the plate. A semi-analytical method, using the Rayleigh–Ritz formulation, analyzes the vibrations of these plates, and the sound radiation characteristics are derived from the Rayleigh integral. The study highlights the influence of surface modifications on vibro-acoustic properties, with key findings showing reduced peak vibro-acoustic responses and a frequency shift with increasing mass ratios. While shark skin-inspired modifications can reduce sound radiation at resonance, the opposite effect is seen at intermittent frequencies. Published in: Scientific Reports Check out the full paper here: https://lnkd.in/gam__k3A I would like to extend my deepest gratitude to my supervisor, Professor Ritwik Ghoshal, whose invaluable guidance, unwavering support, and insightful mentorship have been instrumental in the completion of this article.🙌 #research #publications #vibroacoustics #biomimetics #engineering

my latest research , titled "Exact thermoelastoplastic analysis of FGM rotating hollow disks in a linear elastic-fully plastic condition," has been published in the International Journal of Steel and Composite Structures. In the present study, thermoelsatoplastic stresses and displacement for rotating hollow disks made of functionally graded materials (FGMs) has been investigated. The linear elastic-fully plastic condition is considered. The material properties except Poisson's ratio are assumed to vary in the radial direction as a power-law function. The heat conduction equation for the one-dimensional problem in cylindrical coordinates is used to obtain temperature distribution in the disk. The plastic model is based on the Tresca yield criterion and its associated flow rules under the assumption of perfectly plastic material behavior. Exact solutions of field equations for elastic and plastic deformations are obtained. It is shown that the elastoplastic response of the functionally graded (FG) disk is affected notably by the radial variation of material properties. It is also shown that, depending on material properties and disk dimensions, different modes of plastic deformation may occur.

Researchers at the University of Science and Technology of China have used wood to produce a new kind of smart material that interacts with humans. Their intelligent iontronic wood (iWood) technology enables wooden objects and surfaces to sense touch interactions, much like a touchscreen or trackpad. They accomplished this by infusing wood with an ionic liquid that bonds to the cellulose fibers, resulting in electrical sensitivity without the liquid leaking under pressure. Amazing! This new work has just been added to our YSA Database on recent material discoveries, along with new reports on: a new means to grow artificial human skin in 18 days; breakthroughs in full-color dynamic hologram displays; transparent wood with room-temperature phosphorescence; rheological smart foam (similar to our own PPI-RAP™ foam); new metal-ion water batteries that stay cool under pressure; the first battery made of hemoglobin; and more! Launched in earnest back in 2002, when I was teaching at Cornell University, the database now contains thousands of reports from around the world that are selected for their promise in driving design innovation. #materialsresearch #advancedmaterials #smartmaterials #nanomaterials  #biomaterials #innovation #design #materialsdriveninnovation #materialdrivendesign #biotechnology #nanotechnology #architecture #yeadonspaceagency