Results in Materials最新文献

{"title":"Carbon nanotubes: Structure, properties and applications in the aerospace industry","authors":"Md Syduzzaman ,&nbsp;Md Saiful Islam Saad ,&nbsp;Mufsahan Fuad Piam ,&nbsp;Tufayel Ahmed Talukdar ,&nbsp;Toaki Tajwar Shobdo ,&nbsp;Nadvi Mamun Pritha","doi":"10.1016/j.rinma.2024.100654","DOIUrl":"10.1016/j.rinma.2024.100654","url":null,"abstract":"<div><div>Carbon nanotubes (CNTs) are a significant element of nanotechnology, characterized by an exceptional length-to-diameter ratio exceeding 1,000,000. Various methodologies have been devised to manufacture CNT. These technologies show promise for use in multiple fields, including nanoelectronics, biotechnology, material science, polymers, composites, and textiles. The utilization of these new materials is expected to significantly influence future aircraft and space vehicles, especially in the aerospace sector. This is mainly owing to their exceptional thermal, mechanical, and electrical capabilities. This study comprehensively appraises the prospects of using carbon nanotubes in the aerospace sector. It draws from their current practical use and predicted future usage. Focus is directed toward the future application of carbon nanotubes, which might potentially include lightweight structural components, conductive materials for aircraft systems, composite materials and reinforcements, thermal management systems, electromagnetic interference (EMI) shielding, advanced sensors, nanoelectronics, fuel cells, energy storage systems, space elevators, tether applications, aerogels, and insulation materials, nanocomposites for aircraft coatings area. This paper provides more insights into the recent practical uses of carbon nanotubes in aircraft technology along with the existing and potential obstacles associated with their utilization in aerospace science.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100654"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical probing into the role of experimentally developed ZnTe window layer in high-performance Ag3AuSe2 photodetector","authors":"Sheikh Noman Shiddique ,&nbsp;Ahnaf Tahmid Abir ,&nbsp;Syeda Samiha Nushin ,&nbsp;Bipanko Kumar Mondal ,&nbsp;Jaker Hossain","doi":"10.1016/j.rinma.2024.100651","DOIUrl":"10.1016/j.rinma.2024.100651","url":null,"abstract":"<div><div>In this work, a comprehensive investigation is performed to design a high-performance Ag₃AuSe₂ (Fischesserite) NIR photodetector (PD) with experimentally synthesized ZnTe window and AgCuS as a back surface field (BSF) layers. The ZnTe window layer has been successfully fabricated through spin coating method utilizing thiol-amine co-solvents. This technique yields a notable Bandgap of 2.5 eV for ZnTe thin film. The role of different parameters of each layer such as depth, doping, and defect density are investigated in order to determine how they affect the performance. The Ag₃AuSe₂ PD exhibits excellent results with an amazing photocurrent (J_SC) of 45.7 mA/cm², V_OC of 0.86 V, responsivity of 0.78 AW^-1, detectivity of 3.65 × 10¹⁵ Jones. Because of these superior features and customized design, the Ag₃AuSe₂ PD with ZnTe transport layer shown in this study holds great potential for use in optoelectronic applications in the future.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100651"},"PeriodicalIF":0.0,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensing the future with graphene-based wearable sensors: A review","authors":"Md. Kamrul Hassan Chowdhury ,&nbsp;Habibur Rahman Anik ,&nbsp;Mahmuda Akter ,&nbsp;Shah Md. Maruf Hasan ,&nbsp;Shariful Islam Tushar ,&nbsp;Shakil Mahmud ,&nbsp;Nurun Nahar ,&nbsp;Imana Shahrin Tania","doi":"10.1016/j.rinma.2024.100646","DOIUrl":"10.1016/j.rinma.2024.100646","url":null,"abstract":"<div><div>In this current era, the demand for wearable sensors is increasing in full swing due to their multiphase applications, from the human body to soft robotics. Different materials, including carbon nanotubes, nanowires, nanoparticles, graphene, and more, have been studied to develop cost-efficient, enhanced sensing-capable, multifunctional, easy-to-operate, and easy-to-process wearable sensors. It is a suitable choice for the wearable sensor due to its excellent sensing ability along with myriad suitable mechanical, physical, electrical, and thermal properties. Through the proper utilization of these characteristics of graphene, wearable sensors containing graphene and its derivatives are now widely studied in healthcare, environment protection, and artificial intelligence sectors. This review has comprehensively discussed the current progression of multiple types of graphene and its derivative-based wearable sensors. The specific applications of these different types of graphene wearable sensors, including pressure, strain, gas, electrophysiological sensors, etc., in different fields are broadly described. The design, fabrication process, working, and sensing mechanisms are elaborately discussed. The challenges and limitations of graphene-based wearable sensors, along with potential opportunities, are thoroughly described for further research direction to develop, upgrade, and continue the progression of graphene wearable sensors.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100646"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An artificial neural network approach to predict particle shape characteristics of clay brick powder under various milling conditions","authors":"David Sinkhonde ,&nbsp;Destine Mashava","doi":"10.1016/j.rinma.2024.100650","DOIUrl":"10.1016/j.rinma.2024.100650","url":null,"abstract":"<div><div>The prediction and monitoring of shape descriptors of pozzolans generated from ball milling processes remain today unattended by researchers. Since the particle shapes of pozzolans influence the performance of pozzolanic materials in cement-based composites, an accurate characterisation of particle shapes of pozzolans is required. In this research, we use artificial neural networks (ANNs) to predict the 2-d shape parameters of clay brick powder (CBP) particles considering various milling treatments. An integrated prediction of particle shapes is developed by combining the ANN models with image analysis. Through R values of greater than 0.96 and reduced mean square errors (MSEs) for the ANN models, it is shown that our ANN models can be able to predict the shape parameters of CBP particles under various milling treatments. Moreover, the best validations of our models are achieved at the cost of less than 5 epochs. Collectively, these results increase our understanding in the prediction of the particle shapes of CBP under various milling treatments, setting the stage for additional studies, especially in other pozzolanic materials.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100650"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-principles calculations to investigate the bulk, electronic, optical and thermoelectric properties of BaGe2As2 and BaGe2P2 alloys","authors":"Debora Nameme ,&nbsp;George S. Manyali ,&nbsp;Michael Nakitare Waswa ,&nbsp;Job W. Wafula","doi":"10.1016/j.rinma.2024.100635","DOIUrl":"10.1016/j.rinma.2024.100635","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The structural, elastic, electronic, and optical properties of BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;P&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; have been theoretically investigated, but their thermoelectric properties have not been reported. The current work aimed at conducting an exhaustive study on the bulk, electronic, and optical properties as well as the thermoelectric property of BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;P&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; zintl phase compounds. Density functional theory implemented in Quantum ESPRESSO code combined with other processing codes such as Thermo&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;pw and BoltzTrap were employed in this study. The lattice constants computed were found to agree well with the other theoretical and experimental results, demonstrating validity of the study. Both compounds are brittle, elastically anisotropic and mechanically as well thermodynamically stable. The materials in this investigation were discovered to be semiconductors with indirect band gaps of 0.73 eV and 1.14 eV for BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;P&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; respectively. Therefore, both materials are appropriate for use in the electronics sector, notably in temperature control applications. The PDOS analysis suggests that P and As in BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;P&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, respectively, dominate the conduction band, whereas Ge dominates the valence band in both cases. The results also show that BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;P&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; out-performs BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; in terms of optical absorption coefficient. Both BaGe&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;As&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mro","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"24 ","pages":"Article 100635"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aims and Scope","authors":"","doi":"10.1016/S2590-048X(24)00121-3","DOIUrl":"10.1016/S2590-048X(24)00121-3","url":null,"abstract":"","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"24 ","pages":"Article 100647"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of PECVD deposition on dielectric charge and passivation for n-GaN/SiOx interfaces","authors":"Olivier Richard ,&nbsp;Ali Soltani ,&nbsp;Rahma Adhiri ,&nbsp;Ali Ahaitouf ,&nbsp;Hassan Maher ,&nbsp;Vincent Aimez ,&nbsp;Abdelatif Jaouad","doi":"10.1016/j.rinma.2024.100645","DOIUrl":"10.1016/j.rinma.2024.100645","url":null,"abstract":"<div><div>Controlling properties of GaN/dielectric interfaces is crucial for determining the characteristics of MOS-HEMT devices and their stability. Interface properties are largely affected by the techniques and specific conditions of dielectric deposition. In this work, a Taguchi design of experiment was applied to study the effect of plasma parameters during deposition of SiO<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span> by PECVD for passivation of n-GaN. SiO<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>/GaN MIS capacitors were fabricated and characterized by capacitance measurement at a high probing frequency of 1 MHz. The interface states density, hysteresis and flatband voltage were analyzed and modeled in relation with the flow of SiH<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>, plasma power, chamber pressure and temperature. Excellent fits could be obtained on a single model including linear terms for all studied parameters and quadratic terms for the flow of SiH<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> and temperature. We show that it is possible to obtain some control of the flatband voltage while maintaining a good interface quality. Positive flatband voltages are potentially of interest to enable normally-off operation for MOS-HEMTs and this could be obtained mainly by using a high SiH<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>/N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O ratio. To the contrary, negative flatband voltage values often ensure the most stable operation of MOS-HEMTs and this was achieved with a low SiH<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>/N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O and high plasma power. MIS capacitors with near-zero flatband voltage were also obtained with low SiH<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>/N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O ratio and low plasma power. Hysteresis and interface states density in relation with deposition plasma conditions are also analyzed in order to offer the best trade-offs depending on the end applications of MOS-GaN devices. By demonstrating the great impact of plasma conditions during dielectric deposition on electronic properties of MIS devices, we show that the process of gate insulation can be optimized to simultaneously control the density of defects and fixed charge at the interface.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"24 ","pages":"Article 100645"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of biobased films incorporated with an antimicrobial agent and reinforced with Stipa obtusa cellulose microfibers, via tape casting","authors":"Carolina Parada-Quinayá ,&nbsp;Karen Garces-Porras ,&nbsp;Elena Flores","doi":"10.1016/j.rinma.2024.100637","DOIUrl":"10.1016/j.rinma.2024.100637","url":null,"abstract":"<div><div>In this study, chuño starch films were elaborated using acid hydrolysis, which was incorporated with different concentrations of eucalyptus essential oil (EEO). The reinforcement of the films was made by adding microfibers of <em>Stipa obtusa</em> (MFSO), a native Peruvian natural fiber rich in cellulose. The films were produced through the tape casting technique. The barrier properties presented swelling and solubility values of 1.478 and 0.439 g/g, respectively, at an optimal ratio of 7 % starch on a dry basis. An improvement in the modulus of elasticity of the films obtained was observed by incorporating concentrations of MFSO, starting at 0.55 %, in the polymeric matrix during the synthesis process. The FTIR spectra of the control film and the films reinforced with MFSO exhibited the same bands, due to the chemical similarities between starch and cellulose; micrographs of the reinforced films showed less homogeneous and compact structures compared to the control film, this effect became more pronounced as higher concentrations of MFSO and EEO were incorporated.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"24 ","pages":"Article 100637"},"PeriodicalIF":0.0,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical characterization and tensile properties of a sugarcane bagasse-chemically modified starch composite structure developed for packaging purposes","authors":"Md. Arif Mahmud ,&nbsp;Nafis Abir ,&nbsp;Shah Alimuzzaman Belal ,&nbsp;Md. Abdul Gafur","doi":"10.1016/j.rinma.2024.100634","DOIUrl":"10.1016/j.rinma.2024.100634","url":null,"abstract":"<div><div>The aim of this study is to develop a bagasse fibre reinforced starch composite and to characterize its chemical and tensile properties. Chemical modification was done to improve the inferior mechanical characteristics of the starch polymer by treating it with sodium hydroxide, adipic acid, and mustard oil. Alkali-treated bagasse fibres were applied for better reinforcement. The FTIR data revealed that the chemical modification resulted in chain scissoring of starch owing to oxidation, but at the same time, an increase in the number of C-O-C bonds within and between adjacent chains of starch polymer was also observed. Up to 50 % reinforcement was implemented to fabricate the composite, where 43 % fibre loading was found optimum, showing the highest tensile strength and tensile modulus of 5 MPa and 459.36 MPa, respectively. Moreover, the SEM images also demonstrated better interfacial bonding between bagasse and starch at the same reinforcement. Comparison with previous research and a few currently existing packaging materials in terms of tensile properties showed encouraging outcomes of this study.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100634"},"PeriodicalIF":0.0,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural fiber reinforced polymer composites for ballistic protection: Design, performance, and challenges","authors":"Md. Syduzzaman ,&nbsp;Salman Enayet Chowdhury ,&nbsp;Nadvi Mamun Pritha ,&nbsp;Abir Hassan ,&nbsp;Sajid Hossain","doi":"10.1016/j.rinma.2024.100639","DOIUrl":"10.1016/j.rinma.2024.100639","url":null,"abstract":"<div><div>The increasing demand for sustainable and lightweight materials in defense and security applications has driven the development of natural fiber-reinforced polymer composites (NFRPCs) for ballistic protection. This paper explores the potential of NFRPCs in ballistic armor, focusing on material design, performance evaluation, and the challenges encountered in their application. Natural fibers, such as jute, flax, and hemp, offer significant environmental and weight advantages over traditional synthetic fibers while providing acceptable impact resistance when embedded in polymer matrices. The design considerations for NFRPCs-based ballistic protection systems are examined, highlighting the interplay between fiber type, matrix selection, and composite architecture. The ballistic impact behavior of these composites is assessed through various testing methodologies, emphasizing their energy absorption, deformation mechanisms, and multi-hit performance under different threat levels. Furthermore, this study presents an analysis of the key challenges—ranging from fiber variability and moisture absorption to the optimization of mechanical properties—that hinder widespread adoption in high-performance armor applications. The results underline the potential of NFRPCs as a cost-effective, eco-friendly alternative for protective armor while emphasizing the need for further research to overcome performance limitations. Ultimately, this work aims to provide a foundation for advancing sustainable ballistic protection materials through innovative design and testing strategies.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"24 ","pages":"Article 100639"},"PeriodicalIF":0.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}