Multidisciplinary, Materials Science, Physics and Astronomy, Engineering
111
Scopus Publications
4844
Scholar Citations
40
Scholar h-index
80
Scholar i10-index
Scopus Publications
High-Performance X-Band Electromagnetic Interference Shielding in Flexible Barium Hexaferrite/Cobalt-Based Microwires/Silicone Rubber Ternary Composites via Magnetic–Conductive Synergy Moustafa A. Darwish, Marwa Karim, Azim Uddin, Sherif G. Elsharkawy, Mohamed M. Salem Advanced Electronic Materials, 2026 Modern electronic systems increasingly demand lightweight, flexible electromagnetic interference (EMI) shielding materials. We report, for the first time, a ternary composite of barium hexaferrite (BHF) particles and cobalt (Co)‐based microwires (Co–Microwires) embedded in a silicone rubber (SR) matrix, engineered to exploit magnetic and conductive synergy for enhanced EMI shielding. Composites were systematically investigated as a function of BHF loading (wt.%) and microwire count. XRD revealed that the optimized 40% BHF with 6 Co–Microwires in SR composite exhibits the highest crystallinity (71.56%) and smallest average crystallite size (30.66 ± 4.8 nm), indicating a refined microstructure. This composite achieved a maximum shielding effectiveness (SE) of 16.9 dB at 9.8 GHz, surpassing the 10 dB industrial benchmark. This performance is unattainable by either BHF or microwires in SR alone (<3 and ∼11.1 dB, respectively), confirming synergistic enhancement. The shielding mechanism is compositionally tunable: from 0 to 30 wt.% BHF, improved impedance matching drives a transition from reflection‐dominated to absorption‐dominated shielding; at 40 to 50 wt.%, increased dielectric heterogeneity and interfacial polarization restore reflection dominance, yielding a balanced attenuation regime. These findings establish these ternary composites as a new class of flexible, lightweight, and tunable EMI shielding materials for advanced wireless communication technologies.
BaSc2O4: A Novel AB2O4-Type Low-k Microwave Dielectric Ceramic With Giant Positive τf for 5G/6G Frequency Compensation Guoqiang He, Chao Du, Zhentao Wang, Zhen Fang, Wei Wang, et al. Advanced Functional Materials, 2026 Developing low‐permittivity ( ε r ), low‐loss microwave dielectric ceramics with near‐zero τ f is critical for 5G/6G systems to solve signal delay and thermal stability issues. This study first reports BaSc 2 O 4 ceramics, which exhibit a rare combination: low ε r (≈13), low loss (tanδ ≈ 1.46 × 10 −3 ), and giant positive τ f (+ 167 ppm/°C) for effective compensation in negative‐τ f systems. Notably, it is the first discovery of BaSc 2 O 4 ’s low‐temperature phase transition (potential for cryogenic sensing) via dielectric temperature spectroscopy and in situ XRD; Rietveld refinement and Raman spectroscopy confirm a C 2/ c monoclinic structure (≈ 96.62% density). Far‐infrared spectroscopy reveals that the intrinsic Q × f value (∼ 39 000 GHz) significantly exceeds the experimental measurement, indicating potential for further improvement; P‐V‐L theory elucidates the relationship between microwave dielectric properties and crystal structure parameters; meanwhile, the designed device achieves a 2.4 GHz bandwidth S11 = −44.4 dB and S21 = 0 dB at 2.381 GHz (20°C), showing + 0.46 ppm/°C frequency temperature coefficient (from – 40°C to 120°C) via BaSc 2 O 4 ’s τ f and metal electrodes’ thermal expansion, enabling unique potential applications like WiFi‐2.4G, IoT and RFID. A proof‐of‐concept 0.8Al 2 O 3 – 0.2BaSc 2 O 4 composite achieves near‐zero τ f with low ε r (∼10) and loss (∼0.0016), and simulated 5.8 GHz antenna has 90.98% efficiency and 5.59 dBi gain, suitable for 5G/6G (C‐band) and ISM‐band.
Compositional and optical characterization of B2O3–Bi2O3–ZnO–BaO glasses for nonlinear optical applications Eman N. Serag, O. M. Hemeda, Mohamed M. Salem, Moustafa A. Darwish, Ibrahim Morad, et al. Journal of Materials Science Materials in Electronics, 2026 B 2 O 3 –Bi 2 O 3 –ZnO–BaO (BBiZBa) glasses with varying Bi 2 O 3 content were prepared by the conventional melt-quenching technique to elucidate composition–property relationships relevant to nonlinear optics. Structural features were assessed using X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, confirming predominantly amorphous glass formation across the series. Optical absorption was analyzed by ultraviolet–visible spectroscopy, and the optical band gap (E g ) was determined from Tauc analysis. Increasing the Bi 2 O 3 content systematically reduces E g , indicating a modification of the band structure associated with compositional restructuring of the glass network. Nonlinear optical parameters were evaluated from the linear optical constants, revealing an increase in the third-order nonlinear optical susceptibility ( χ 3 ) with Bi 2 O 3 incorporation. These results demonstrate that Bi 2 O 3 -enriched BBiZBa glasses provide a promising compositional route toward enhanced nonlinear optical response, supporting their potential use in nonlinear optical and photonic device applications.
High microwave dielectric performance and applications in antenna of novel Li7La3Zr2O12 ceramics Guo‐Qiang He, Chao Du, Zhen‐Tao Wang, Jian Bao, Zhen Fang, et al. Journal of the American Ceramic Society, 2026 This study pioneers the cross‐disciplinary application of garnet‐type solid‐state electrolyte Li 7 La 3 Zr 2 O 12 (LLZO) in microwave dielectric ceramics. LLZO was synthesized via solid‐state reaction, achieving optimized microwave dielectric properties at 900°C: ε r = 8.13, Q × f = 31 735 GHz, τ f = −44.3 ppm/°C. Direct cofiring experiments with Ag electrodes validated its compatibility with low‐temperature cofired ceramic (LTCC). X‐ray diffractometer (XRD)/scanning electron microscope (SEM)–energy‐dispersive X‐ray spectroscopy (EDS) confirmed interfacial stability and chemical inertness, overriding standalone thermal expansion parameter considerations. A Beidou antenna prototype on LLZO substrates demonstrated 59.2 MHz bandwidth at 1.57 GHz with 4.33 dBi gain and >97% radiation efficiency. By synergizing low‐loss microwave response with inherent Li⁺ conductivity and thermal robustness, LLZO emerges as a multifunctional platform for integrated energy‐communication systems. It enables future designs of LTCC based self‐powered modules and real‐time structural health monitoring devices. This work bridges solid‐state electrolytes and microwave ceramics, offering a paradigm for material innovation in fifth‐generation (5G)/sixth‐generation (6G) networks and intelligent electronics.
Nanomaterials for Antenna Applications Anwer S. Abd El-Hameed, Asmaa I. Afifi, Moustafa A. Darwish, Trukhanov Alex Synthesis and Applications of Nanoparticles, 2022
Compositional and optical characterization of B 2 O 3 –Bi 2 O 3 –ZnO–BaO glasses for nonlinear optical applications EN Serag, OM Hemeda, MM Salem, MA Darwish, I Morad, SAA Gawad Journal of Materials Science: Materials in Electronics 37 (11), 788 , 2026 2026
Fe3O4-CNFs@ MXene with encapsulated magnetic nanoparticles for tunable high-performance microwave absorption via dual electromagnetic wave loss pathways Y Wang, X Li, H Zhou, Z Huang, MA Darwish, MM Salem, T Zhou, ... Materials Today Physics 62, 102043 , 2026 2026
" Cardiac-like functionalization" porous magnetic MXene/carbon dots films via constructing bidirectional electromagnetic wave attenuation paths for high-performance microwave … H Zhou, X Li, Z Huang, Z Liu, M Li, J Zhang, Y Wang, Z Xi, MA Darwish, ... Carbon, 121298 , 2026 2026
High‐Performance X‐Band Electromagnetic Interference Shielding in Flexible Barium Hexaferrite/Cobalt‐Based Microwires/Silicone Rubber Ternary Composites via Magnetic–Conductive … MA Darwish, M Karim, A Uddin, SG Elsharkawy, MM Salem Advanced Electronic Materials, e70409 , 2026 2026
BaSc 2 O 4 : A Novel AB 2 O 4 ‐Type Low‐ k Microwave Dielectric Ceramic With Giant Positive τ f for 5G/6G Frequency Compensation G He, C Du, Z Wang, Z Fang, W Wang, Z Xi, C Wu, S Ma, MA Darwish, ... Advanced Functional Materials, e28138 , 2026 2026 Citations: 6
High microwave dielectric performance and applications in antenna of novel Li 7 La 3 Zr 2 O 12 ceramics GQ He, C Du, ZT Wang, J Bao, Z Fang, CH Wang, ZC Xi, MA Darwish, ... Journal of the American Ceramic Society 109 (1), e70425 , 2026 2026 Citations: 3
Nb2O5/α-Fe2O3 Heterostructures as Next-Generation Electromagnetic Shields with Ultra-Low Reflectivity: Toward Stealth Technology A Uddin, Q Jiang, J Zhang, D Zhou, MA Darwish Materials Today Physics, 101925 , 2025 2025
Overview of MXene-based sensors: Fundamentals and applications in gas sensors, biosensors, and mechanical sensors X Li, T Guo, M Li, C Yang, H Zhou, Y Liu, S Iqbal, Z Huang, MA Darwish, ... Carbon, 121015 , 2025 2025 Citations: 6
Interface-engineered Ni-Cu-Al ferrite/polypyrrole nanocomposites: Advanced solutions for EMI shielding and stealth applications MA Darwish, MM Salem, SG Elsharkawy, A Uddin, HF Abosheiasha, ... Composite Structures 371, 119444 , 2025 2025 Citations: 6
Synergistic microwave absorption in MXene/MnO2 composites achieved through interfacial engineering and controlled MnO2 morphology H Zhou, X Li, J Liu, J Zhang, Z Liu, MA Darwish, MM Salem, T Zhou, ... Materials Today Physics, 101822 , 2025 2025 Citations: 11
Tunable Microwave Dielectric Properties of the (Ba₁₋ ₓSrₓ) Li₂Ti₆O₁₄ Ceramics and Effects of BCB Addition on Performance Z Fang, KH Zhang, W Wang, J Bao, GQ He, JP Jiang, H Zhai, MA Darwish, ... Applied Materials Today 45, 102806 , 2025 2025 Citations: 6
LiMSiO4 (M= Ga, Sc and Y): Low-permittivity and high thermal conductivity microwave dielectric ceramics for millimeter-wave communications W Wang, J Bao, C Wang, G He, X Wang, D Xu, B Jin, Z Shi, MA Darwish, ... Journal of Materials Science & Technology 225, 288-296 , 2025 2025 Citations: 50
Microwave dielectric properties of temperature‐stable (Na 0.5 Bi 0.5 )MoO 4 –SrMoO 4 ceramics sintered at ultra‐low temperature ARH Alzakree, CH Wang, M Shehbaz, W Wang, MA Darwish, T Zhou, ... Journal of the American Ceramic Society 108 (7), e20504 , 2025 2025 Citations: 7
Cement waste-integrated bismuth phosphate Glasses: Gamma irradiation, structural optimization, and enhanced shielding efficiency against alpha/proton radiation HMH Zakaly, SAM Issa, MA Darwish, HA Saudi, MM Abou Halaka, ... Ceramics International , 2025 2025 Citations: 2
Strategic dual-stratum microwire composites for effective electromagnetic shielding with low microwave reflectivity A Uddin, D Zhou, MG Nematov, MA Darwish, X Li, MM Salem Journal of Alloys and Compounds 1030, 180880 , 2025 2025 Citations: 2
Structure-induced selectivity of hydroxylated covalent organic framework nanofibers for advanced sensing applications: An experimental and density functional theory study NL Torad, TL Yang, M A. Darwish, P Raghunath, A Qurashi, LR Ahmed, ... ACS applied materials & interfaces 17 (18), 27188-27203 , 2025 2025 Citations: 5
Temperature stable (1-x) BaAl2Si2O8-xBa3V2O8 (0.2≤ x≤ 0.5) microwave dielectric composite ceramics for LTCC applications W Wang, Q Wang, D Xu, Z Shi, T Guo, F Hussain, MA Darwish, T Zhou, ... Journal of the European Ceramic Society 45 (3), 117042 , 2025 2025 Citations: 13
Advancing fatigue life prediction with machine learning: A review A Hamada, S Elyamny, W Abd-Elaziem, S Elkatatny, MA Darwish, ... Materials Today Communications 43, 111525 , 2025 2025 Citations: 30
Machine learning-driven interface engineering for enhanced microwave absorption in MXene films H Zhou, X Li, Z Xi, M Li, J Zhang, C Li, Z Liu, MA Darwish, T Zhou, D Zhou Materials Today Physics 51, 101640 , 2025 2025 Citations: 18
Advancements in microwave dielectric ceramics with K20 for 5G/6G communication systems: a review GQ He, J Miao, FF Wu, W Wang, J Bao, JP Jiang, DW Liu, MA Darwish, ... Journal of Materials Chemistry C 13 (31), 15746-15766 , 2025 2025 Citations: 16
MOST CITED SCHOLAR PUBLICATIONS
Titanium-Based alloys and composites for orthopedic implants Applications: A comprehensive review W Abd-Elaziem, MA Darwish, A Hamada, WM Daoush Materials & Design 241, 112850 , 2024 2024 Citations: 497
Advancements in nanomaterials for nanosensors: a comprehensive review MA Darwish, W Abd-Elaziem, A Elsheikh, AA Zayed Nanoscale Advances 6 (16), 4015-4046 , 2024 2024 Citations: 293
Investigation of AC-Measurements of Epoxy/Ferrite Composites MA Darwish, AV Trukhanov, OS Senatov, AT Morchenko, SA Saafan, ... Nanomaterials 10 (3) , 2020 2020 Citations: 176
Preparation and investigation of structure, magnetic and dielectric properties of (BaFe11. 9Al0. 1O19) 1-x-(BaTiO3) x bicomponent ceramics SV Trukhanov, AV Trukhanov, MM Salem, EL Trukhanova, LV Panina, ... Ceramics International 44 (17), 21295-21302 , 2018 2018 Citations: 171
Impact of the nanocarbon on magnetic and electrodynamic properties of the ferrite/polymer composites AV Trukhanov, DI Tishkevich, SV Podgornaya, E Kaniukov, MA Darwish, ... Nanomaterials 12 (5), 868 , 2022 2022 Citations: 162
Synthesis, characterization, and magnetic properties of Mn nanoferrites RE El-Shater, H El Shimy, SA Saafan, MA Darwish, D Zhou, ... Journal of Alloys and Compounds 928, 166954 , 2022 2022 Citations: 142
Structural, electric and magnetic properties of (BaFe11. 9Al0. 1O19) 1-x-(BaTiO3) x composites MM Salem, LV Panina, EL Trukhanova, MA Darwish, AT Morchenko, ... Composites Part B: Engineering 174, 107054 , 2019 2019 Citations: 141
Pecularities of the magnetic structure and microwave properties in Ba (Fe1-xScx) 12O19 (x< 0.1) hexaferrites AV Trukhanov, KA Astapovich, MA Almessiere, VA Turchenko, ... Journal of Alloys and Compounds 822, 153575 , 2020 2020 Citations: 131
Preparation, structural, magnetic, and AC electrical properties of synthesized CoFe2O4 nanoparticles and its PVDF composites MM Hussein, SA Saafan, HF Abosheiasha, D Zhou, DI Tishkevich, ... Materials Chemistry and Physics 317, 129041 , 2024 2024 Citations: 118
Features of crystal and magnetіc structure of the BaFe12-xGaxO19 (x≤ 2) in the wіde temperature range AV Trukhanov, MA Darwish, LV Panina, AT Morchenko, VG Kostishyn, ... Journal of Alloys and Compounds 791, 522-529 , 2019 2019 Citations: 118
Ultra-low temperature co-fired ceramics with adjustable microwave dielectric properties in the Na 2 O–Bi 2 O 3–MoO 3 ternary system: a comprehensive study SZ Hao, D Zhou, LX Pang, MZ Dang, SK Sun, T Zhou, S Trukhanov, ... Journal of Materials Chemistry C 10 (6), 2008-2016 , 2022 2022 Citations: 115
Design and fabrication of a satellite communication dielectric resonator antenna with novel low Loss and temperature-stabilized (Sm1–x Ca x)(Nb1–x Mo x) O4 (x= 0.15–0.7 … F Wu, D Zhou, C Du, DM Xu, RT Li, ZQ Shi, MA Darwish, T Zhou, ... Chemistry of Materials 35 (1), 104-115 , 2022 2022 Citations: 102
Impact of the heat treatment conditions on crystal structure, morphology and magnetic properties evolution in BaM nanohexaferrites AV Trukhanov, KA Darwish, MM Salem, OM Hemeda, MIA Ati, ... Journal of Alloys and Compounds 866, 158961 , 2021 2021 Citations: 102
Structural, magnetic, and AC measurements of nanoferrites/graphene composites SA Habib, SA Saafan, TM Meaz, MA Darwish, D Zhou, MU Khandaker, ... Nanomaterials 12 (6), 931 , 2022 2022 Citations: 96
Vertically stacked heterostructures of MXene/rGO films with enhanced gradient impedance for high-performance microwave absorption X Li, D Xu, D Zhou, S Pang, C Du, MA Darwish, T Zhou, SK Sun Carbon 208, 374-383 , 2023 2023 Citations: 90
Impact of Nd 3+ Substitutions on the Structure and Magnetic Properties of Nanostructured SrFe 12 O 19 Hexaferrite AM Semaida, MA Darwish, MM Salem, D Zhou, TI Zubar, SV Trukhanov, ... Nanomaterials 12 (19), 3452 , 2022 2022 Citations: 90
Enhanced hydrogen storage efficiency with sorbents and machine learning: a review AI Osman, W Abd-Elaziem, M Nasr, M Farghali, AK Rashwan, A Hamada, ... Environmental Chemistry Letters 22 (4), 1703-1740 , 2024 2024 Citations: 89
Structural and dielectric characterization of synthesized nano-BSTO/PVDF composites for smart sensor applications MM Hussein, SA Saafan, HF Abosheiasha, AA Kamal, AE Mahmoud, ... Materials Advances 4 (22), 5605-5617 , 2023 2023 Citations: 83
Structure, morphology and electrical/magnetic properties of Ni-Mg nano-ferrites from a new perspective M Mostafa, O Saleh, AM Henaish, SA Abd El-Kaream, R Ghazy, ... Nanomaterials 12 (7), 1045 , 2022 2022 Citations: 77
AC measurements, impedance spectroscopy analysis, and magnetic properties of Ni0. 5Zn0. 5Fe2O4/BaTiO3 multiferroic composites RE El-Shater, AS Atlam, MK Elnimr, ST Assar, DI Tishkevich, TI Zubar, ... Materials Science and Engineering: B 286, 116025 , 2022 2022 Citations: 66