@article{le_omran_elnabawy_hassanin_mahmoud_shehata_shyha_2024, title={Exploring advances in nanofiber-based face masks: a comprehensive review of mechanical, electrostatic, and antimicrobial functionality filtration for the removal of airborne particulate matter and pathogens}, ISSN={["2522-574X"]}, DOI={10.1007/s42247-023-00622-9}, abstractNote={Abstract}, journal={EMERGENT MATERIALS}, author={Le, Bao and Omran, Nada and Elnabawy, Eman and Hassanin, Ahmed H. and Mahmoud, Kamal and Shehata, Nader and Shyha, Islam}, year={2024}, month={Jan} }
 @article{kandas_gamal_omran_noman_magdy_hassanin_shehata_2024, title={Nonlinear-optical piezoelectric electrospun nanofibers}, volume={171}, ISSN={["1873-4227"]}, DOI={10.1016/j.materresbull.2023.112600}, abstractNote={This paper presents a nonlinear optical piezoelectric electrospun nanocomposite of polyvinylidene fluoride (PVDF) nanofibers with embedded nanomaterial of poly {1-[p-(3’-carboxy-4’- hydroxyphenylazo) benzenesulfonamido]-1, 2-ethandiyl} (PCBS). PCBS of different weight ratios are added in-situ to the synthesized PVDF nanofibers. The generated nanofibers mats have been proved to possess both properties of piezoelectric response and nonlinear optical conversion due to the presence of both PVDF and PCBS, respectively. Innovatively, embedding PCBS within the PVDF nanofibers increases the piezoelectric response of the nanocomposite, compared to the case of neat PVDF nanofibers, at certain optimum weight concentrations of PCBS. This has been proved by different piezoelectric measurements at different applied forces and vibration frequencies, along with d33 coefficient measurements and supported by FTIR analysis of beta-sheets. Our results support the evidence of the coupling between the polarized diploes of PCBS and PVDF, which can enhance the overall piezoelectric response. Furthermore, the synthesized nanocomposite shows an optical second harmonic generation (SHG) at optimum concentration of added PCBS within the PVDF nanofibers of around 1 wt.%. The synthesized nonlinear optical nanocomposite of PVDF/PCBS can be multi-functionalized sensors/transducer membranes for biomedical and sensing applications.}, journal={MATERIALS RESEARCH BULLETIN}, author={Kandas, Ishac and Gamal, Mohammed and Omran, Nada and Noman, Sara and Magdy, Germein and Hassanin, Ahmed H. and Shehata, Nader}, year={2024}, month={Mar} }
 @article{akatwijuka_gepreel_abdel-mawgood_yamamoto_saito_hassanin_2023, title={Green hydrothermal extraction of banana cellulosic fibers by seawater-assisted media as an alternative to freshwater: physico-chemical, morphological and mechanical properties}, ISSN={["1572-882X"]}, DOI={10.1007/s10570-023-05508}, journal={CELLULOSE}, author={Akatwijuka, Osbert and Gepreel, Mohamed A. -H. and Abdel-Mawgood, Ahmed and Yamamoto, Mitsuo and Saito, Yukie and Hassanin, Ahmed H.}, year={2023}, month={Sep} }
 @article{akatwijuka_gepreel_abdel-mawgood_yamamoto_saito_hassanin_2023, title={Green hydrothermal extraction of banana cellulosic fibers by seawater-assisted media as an alternative to freshwater: physico-chemical, morphological and mechanical properties}, volume={30}, ISSN={["1572-882X"]}, DOI={10.1007/s10570-023-05508-x}, number={16}, journal={CELLULOSE}, author={Akatwijuka, Osbert and Gepreel, Mohamed A. -H. and Abdel-Mawgood, Ahmed and Yamamoto, Mitsuo and Saito, Yukie and Hassanin, Ahmed H.}, year={2023}, month={Nov}, pages={9989–10008} }
 @article{hassanin_elnabawy_salah_nair_gamal_omran_popelka_kandas_shehata_2023, title={Multi-functional wet-electrospun piezoelectric nanofibers sensing mat: Manufacturing, characterization, and applications}, volume={166}, ISSN={["1873-4081"]}, DOI={10.1016/j.mssp.2023.107708}, abstractNote={This paper introduces the fabrication of multi-featured nanofibers membranes using wet-electrospinning process. Polyvinylidene fluoride (PVDF) nanofibers were wet-electrospun onto poly (3, 4-ethylenedioxythiophene) poly (styrene sulfonate) (PEDOT: PSS) coagulation bath to generate hybrid structure of piezoelectric multifunctional sensor. Therefore, the fabricated wet-electrospun nanofibers membrane shows piezo sensitivity up to 0.9 V/N and piezo coefficient (d33) of 27.2 pC/N. In addition, our fabricated membrane shows a variable surface roughness response up to 120 p.m. at an applied DC voltage of 10 V, as an opposite piezoelectric transducing mechanism. Also, our formed nanocomposite showed a strain sensing capability with conductivity variation of 0.01833 S/m per each 1% elongation strain. Furthermore, we have detected the effect of cyclic stretching strains over 100 times on the performance of both piezo response and strain sensing of our developed wetspun nanofibers. The presented work has a high potential to be applied in different applications related to wearable and flexible electronics as well as industrial mechanical transducers.}, journal={MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING}, author={Hassanin, Ahmed H. and Elnabawy, Eman and Salah, Mohammed and Nair, Remya and Gamal, Mohammed and Omran, Nada and Popelka, Anton and Kandas, Ishac and Shehata, Nader}, year={2023}, month={Nov} }
 @article{elbhnsawi_elwakil_hassanin_shehata_elshewemi_hagar_olama_2023, title={Nano-Chitosan/Eucalyptus Oil/Cellulose Acetate Nanofibers: Manufacturing, Antibacterial and Wound Healing Activities}, volume={13}, ISSN={["2077-0375"]}, DOI={10.3390/membranes13060604}, abstractNote={Accelerated wound healing in infected skin is still one of the areas where current therapeutic tactics fall short, which highlights the critical necessity for the exploration of new therapeutic approaches. The present study aimed to encapsulate Eucalyptus oil in a nano-drug carrier to enhance its antimicrobial activity. Furthermore, in vitro, and in vivo wound healing studies of the novel nano-chitosan/Eucalyptus oil/cellulose acetate electrospun nanofibers were investigated. Eucalyptus oil showed a potent antimicrobial activity against the tested pathogens and the highest inhibition zone diameter, MIC, and MBC (15.3 mm, 16.0 μg/mL, and 256 μg/mL, respectively) were recorded against Staphylococcus aureus. Data indicated a three-fold increase in the antimicrobial activity of Eucalyptus oil encapsulated chitosan nanoparticle (43 mm inhibition zone diameter against S. aureus). The biosynthesized nanoparticles had a 48.26 nm particle size, 19.0 mV zeta potential, and 0.45 PDI. Electrospinning of nano-chitosan/Eucalyptus oil/cellulose acetate nanofibers was conducted, and the physico-chemical and biological properties revealed that the synthesized nanofibers were homogenous, with a thin diameter (98.0 nm) and a significantly high antimicrobial activity. The in vitro cytotoxic effect in a human normal melanocyte cell line (HFB4) proved an 80% cell viability using 1.5 mg/mL of nano-chitosan/Eucalyptus oil/cellulose acetate nanofibers. In vitro and in vivo wound healing studies revealed that nano-chitosan/Eucalyptus oil/cellulose acetate nanofibers were safe and efficiently enhanced the wound-healing process through enhancing TGF-β, type I and type III collagen production. As a conclusion, the manufactured nano-chitosan/Eucalyptus oil/cellulose acetate nanofiber showed effective potentiality for its use as a wound healing dressing.}, number={6}, journal={MEMBRANES}, author={Elbhnsawi, Nagwa A. and Elwakil, Bassma H. and Hassanin, Ahmed H. and Shehata, Nader and Elshewemi, Salma Sameh and Hagar, Mohamed and Olama, Zakia A.}, year={2023}, month={Jun} }
 @article{mokhtar_kandas_gamal_omran_hassanin_shehata_2023, title={Nano-Enriched Self-Powered Wireless Body Area Network for Sustainable Health Monitoring Services}, volume={23}, ISSN={["1424-8220"]}, DOI={10.3390/s23052633}, abstractNote={Advances in nanotechnology have enabled the creation of novel materials with specific electrical and physical characteristics. This leads to a significant development in the industry of electronics that can be applied in various fields. In this paper, we propose a fabrication of nanotechnology-based materials that can be used to design stretchy piezoelectric nanofibers for energy harvesting to power connected bio-nanosensors in a Wireless Body Area Network (WBAN). The bio-nanosensors are powered based on harvested energy from mechanical movements of the body, specifically the arms, joints, and heartbeats. A suite of these nano-enriched bio-nanosensors can be used to form microgrids for a self-powered wireless body area network (SpWBAN), which can be used in various sustainable health monitoring services. A system model for an SpWBAN with an energy harvesting-based medium access control protocol is presented and analyzed based on fabricated nanofibers with specific characteristics. The simulation results show that the SpWBAN outperforms and has a longer lifetime than contemporary WBAN system designs without self-powering capability.}, number={5}, journal={SENSORS}, author={Mokhtar, Bassem and Kandas, Ishac and Gamal, Mohammed and Omran, Nada and Hassanin, Ahmed H. and Shehata, Nader}, year={2023}, month={Mar} }
 @article{kuoribo_shokry_hassanin_asawa_mahmoud_2023, title={Optimizing concrete performance: An investigation into the impact of supplementary cementitious materials and sand particle sizes}, volume={347}, ISSN={["1873-4979"]}, DOI={10.1016/j.matlet.2023.134593}, abstractNote={The significance of employing suitable grades of aggregates and binders combined with waste materials in optimizing the performance of concrete cannot be overstated. It is evidenced from research that supplementary cementitious materials (SCM) sourced from construction waste can enhance the properties of cured concrete with less environmental impact and substantial economic savings. This study investigates the effect of SCM modified with customized sand particle sizes as fine aggregates on concrete’s compressive strength and durability properties. The SCMs comprised silica fume (SF), glass powder (GP), and marble dust (MD) in different percentages (0%, 15%, and 20%). The results indicated higher compressive strength at 28-d could be obtained by adding SCM and finer sand particle size distribution than natural sand grain sizes. The study suggests an effective approach for the recyclability of locally available industrial by-products as ingredient modifiers, which possess great potential for cement production for improved performance and to benefit localities with the predominance of finer sand and soil varieties for usage as a substitute to the traditional grain size of fine aggregates.}, journal={MATERIALS LETTERS}, author={Kuoribo, Ewald and Shokry, Hassan and Hassanin, Ahmed H. and Asawa, Takashi and Mahmoud, Hatem}, year={2023}, month={Sep} }
 @article{eze_omer_hassanin_eltaweil_el-khouly_2023, title={Preparation of starch-based adsorbing-flocculating bifunctional material St-A/F and its removal of active, direct and disperse dyes from textile printing and dyeing wastewater}, ISSN={["2190-6823"]}, DOI={10.1007/s13399-023-04342-2}, journal={BIOMASS CONVERSION AND BIOREFINERY}, author={Eze, Esther and Omer, Ahmed M. and Hassanin, Ahmed H. and Eltaweil, Abdelazeem S. and El-Khouly, Mohamed E.}, year={2023}, month={May} }
 @article{akatwijuka_abdelgawad_hassanin_2023, title={Valorization of natural bark cloth fabric from <i>Ficus natalensis</i> for potential antimicrobial applications}, ISSN={["2190-6823"]}, DOI={10.1007/s13399-023-04790}, journal={BIOMASS CONVERSION AND BIOREFINERY}, author={Akatwijuka, Osbert and Abdelgawad, Abdelrahman M. and Hassanin, Ahmed H.}, year={2023}, month={Aug} }
 @article{akatwijuka_abdelgawad_hassanin_2023, title={Valorization of natural bark cloth fabric from <i>Ficus natalensis</i> for potential antimicrobial applications}, ISSN={["2190-6823"]}, DOI={10.1007/s13399-023-04790-w}, journal={BIOMASS CONVERSION AND BIOREFINERY}, author={Akatwijuka, Osbert and Abdelgawad, Abdelrahman M. and Hassanin, Ahmed H.}, year={2023}, month={Aug} }