Pub Date : 2024-06-03DOI: 10.12688/materialsopenres.17627.1
Sara Díaz, Z. Ortega
The waste from banana food production and their use within a circular economy framework are briefly analyzed within this review. Firstly, general information on the economic value of the crop, and its relevance in the economic development of the Canary Islands are presented. Secondly, an analysis on the types of by-products that are generated in banana cultivation, both in the plantation itself (pseudostem, leaves, and flower), and in the sorting and packaging facilities (rachis and discarded bananas) is shown. The authors conclude that banana plantation residues could be recovered by applying the biorefinery concept, in line with the European guidelines on efficient use of resources.
{"title":"Banana crop by-products in the Canary Islands in a biorefinery’s context","authors":"Sara Díaz, Z. Ortega","doi":"10.12688/materialsopenres.17627.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17627.1","url":null,"abstract":"The waste from banana food production and their use within a circular economy framework are briefly analyzed within this review. Firstly, general information on the economic value of the crop, and its relevance in the economic development of the Canary Islands are presented. Secondly, an analysis on the types of by-products that are generated in banana cultivation, both in the plantation itself (pseudostem, leaves, and flower), and in the sorting and packaging facilities (rachis and discarded bananas) is shown. The authors conclude that banana plantation residues could be recovered by applying the biorefinery concept, in line with the European guidelines on efficient use of resources.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"68 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141272409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-17DOI: 10.12688/materialsopenres.17669.1
M. Bodiul Islam, Hasnat Jahan Sumona, M. J. Haque, Abdullah Al Mahmood
Additive manufacturing (AM), well-known as 3D printing, has revolutionized traditional manufacturing methods, particularly in the production of ceramic components. These techniques offer unique advantages and challenges in ceramic component production. Developing specific ceramic materials with AM improves the finished products' mechanical, thermal, and electrical characteristics. Integrating artificial intelligence and machine learning shows promise in improving process control and design optimization, spurring innovation and opening previously unimaginable possibilities, although problems such as material shrinkage, microstructural control, and surface polish remain crucial research areas. This review article presents a comprehensive overview of the advancements and applications of AM for ceramic pieces in the industrial sector. This study highlights the fundamental principles of AM, focusing on their difficulties and potential in ceramic fabrication. A comprehensive review of AM will deliver an understanding of its ability to alter industrial manufacturing and open the door to a new era of ceramic fabrication and applications.
快速成型制造（AM），即众所周知的 3D 打印，已经彻底改变了传统的制造方法，尤其是在陶瓷部件的生产方面。这些技术为陶瓷元件生产带来了独特的优势和挑战。利用 AM 技术开发特定的陶瓷材料，可以改善成品的机械、热和电气特性。人工智能和机器学习的结合有望改善工艺控制和设计优化，促进创新并带来以前无法想象的可能性，但材料收缩、微结构控制和表面抛光等问题仍是关键的研究领域。这篇综述文章全面概述了陶瓷件 AM 在工业领域的进展和应用。本研究强调了自动机械加工的基本原理，重点关注其在陶瓷制造中的难点和潜力。对 AM 的全面综述将有助于了解其改变工业制造的能力，并为陶瓷制造和应用的新时代打开大门。
{"title":"A progressive overview of the mainstream additive manufacturing of ceramic components for industrial advancement","authors":"M. Bodiul Islam, Hasnat Jahan Sumona, M. J. Haque, Abdullah Al Mahmood","doi":"10.12688/materialsopenres.17669.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17669.1","url":null,"abstract":"Additive manufacturing (AM), well-known as 3D printing, has revolutionized traditional manufacturing methods, particularly in the production of ceramic components. These techniques offer unique advantages and challenges in ceramic component production. Developing specific ceramic materials with AM improves the finished products' mechanical, thermal, and electrical characteristics. Integrating artificial intelligence and machine learning shows promise in improving process control and design optimization, spurring innovation and opening previously unimaginable possibilities, although problems such as material shrinkage, microstructural control, and surface polish remain crucial research areas. This review article presents a comprehensive overview of the advancements and applications of AM for ceramic pieces in the industrial sector. This study highlights the fundamental principles of AM, focusing on their difficulties and potential in ceramic fabrication. A comprehensive review of AM will deliver an understanding of its ability to alter industrial manufacturing and open the door to a new era of ceramic fabrication and applications.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"13 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140963721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background With the increase in the amount of scrap steel in society, the proportion of electric furnace steelmaking is increasing year by year, especially in China. Due to the high Zn content, the electric furnace arc dust (EAFD) needs to be recovered by non-blast furnace process. Due to EAFD containing a large amount of zinc ferrite, it needs to be recovered by fire process. It is a promising process to melt the EAFD pellets to get the discount and zinc-rich secondary ash. Methods To clarify the melting behavior of pellets in the metallurgical process, the slag phase diagram and the effect of temperature and FeO on slag viscosity were calculated using FactSage, and the melting process of electric furnace arc dust (EAFD) pellets in a graphite crucible, iron bath, and slag bath were experimentally investigated. Results The experimental results show that the viscosity of the slag system decreases with increasing temperature and FeO content, and the effect of FeO on viscosity is greater. The viscosity decreased from 0.305 to 0.276 Pa·s when the FeO content in the slag was increased from 0 wt. % to 2 wt.% at 1773 K. The melting process of the EAFD pellets in an iron bath and graphite crucible was consistent, and after the formation of liquid-phase slag in the pellets, the liquid-phase slag was diffused to melt the pellets. Conclusions The iron bath improved the heat transfer conditions of the pellets, reducing the smelting time from 600 to 360 s. The slag bath promoted the slagging reaction of the contact part to change the pellet melting process and increase the pellet melting speed, and the EAFD pellets melted within 240 s in a slag bath.
{"title":"Analysis of the melting process of carbon-bearing pellets in iron bath, slag bath and graphite crucible","authors":"Chao Yang, Xue-feng She, Ru-yi Wang, Pei-fang Lin, Jing-song Wang, Qing-guo Xue","doi":"10.12688/materialsopenres.17650.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17650.1","url":null,"abstract":"Background With the increase in the amount of scrap steel in society, the proportion of electric furnace steelmaking is increasing year by year, especially in China. Due to the high Zn content, the electric furnace arc dust (EAFD) needs to be recovered by non-blast furnace process. Due to EAFD containing a large amount of zinc ferrite, it needs to be recovered by fire process. It is a promising process to melt the EAFD pellets to get the discount and zinc-rich secondary ash. Methods To clarify the melting behavior of pellets in the metallurgical process, the slag phase diagram and the effect of temperature and FeO on slag viscosity were calculated using FactSage, and the melting process of electric furnace arc dust (EAFD) pellets in a graphite crucible, iron bath, and slag bath were experimentally investigated. Results The experimental results show that the viscosity of the slag system decreases with increasing temperature and FeO content, and the effect of FeO on viscosity is greater. The viscosity decreased from 0.305 to 0.276 Pa·s when the FeO content in the slag was increased from 0 wt. % to 2 wt.% at 1773 K. The melting process of the EAFD pellets in an iron bath and graphite crucible was consistent, and after the formation of liquid-phase slag in the pellets, the liquid-phase slag was diffused to melt the pellets. Conclusions The iron bath improved the heat transfer conditions of the pellets, reducing the smelting time from 600 to 360 s. The slag bath promoted the slagging reaction of the contact part to change the pellet melting process and increase the pellet melting speed, and the EAFD pellets melted within 240 s in a slag bath.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"2 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140969244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-20DOI: 10.12688/materialsopenres.17651.1
Anik Molla, Abdullah Al Moyeen, Raiyana Mashfiqua Mahmud, Md. Jahidul Haque
Plastic pollution has become a persistent challenge globally. The extensive production of disposable plastics overwhelms the world's ability to cope with. These non-biodegradable plastics accumulating in landfills, rivers, and seas cause severe damage to wildlife and the environment. The utilization of biopolymer is a possible alternative to petroleum-based plastics. Polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), polylactic acid (PLA), poly(ε-caprolactone) (PCL), cellulose, chitin, and thermoplastic starch are mostly used biopolymers with promising properties. There are challenges too. Properties including brittleness, low thermal stability, low strength, and poor chemical barrier properties are the challenges to replacing plastics material. Reinforcing natural fibers as an alternative to non-biodegradable synthetic fiber with biopolymer matrices improves the properties of the material significantly. Flax, kenaf, jute, ramie, and hemp are a few agro-based fibers that are generally reinforced with biopolymer matrices. These composites are known as green composites. In order to create an interfacial bond between hydrophilic fiber and hydrophobic biopolymer surface modification of natural fiber is needed. There are many physical and chemical methods of surface medication which enhance roughness, wettability as well as hydrophilicity, lowers moisture absorption, improve the interfacial bond, and also enhance the tensile properties of natural fiber. The review is on the classification of biopolymers, natural fibers and their properties as well as the surface modification techniques for plant fibers. Moreover, the fabrication, mechanical and chemical properties including biodegradation of different green composites and the application of green composites, are also discussed here.
{"title":"Plant fiber-reinforced green composite: A review on surface modification, properties, fabrications and applications","authors":"Anik Molla, Abdullah Al Moyeen, Raiyana Mashfiqua Mahmud, Md. Jahidul Haque","doi":"10.12688/materialsopenres.17651.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17651.1","url":null,"abstract":"Plastic pollution has become a persistent challenge globally. The extensive production of disposable plastics overwhelms the world's ability to cope with. These non-biodegradable plastics accumulating in landfills, rivers, and seas cause severe damage to wildlife and the environment. The utilization of biopolymer is a possible alternative to petroleum-based plastics. Polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), polylactic acid (PLA), poly(ε-caprolactone) (PCL), cellulose, chitin, and thermoplastic starch are mostly used biopolymers with promising properties. There are challenges too. Properties including brittleness, low thermal stability, low strength, and poor chemical barrier properties are the challenges to replacing plastics material. Reinforcing natural fibers as an alternative to non-biodegradable synthetic fiber with biopolymer matrices improves the properties of the material significantly. Flax, kenaf, jute, ramie, and hemp are a few agro-based fibers that are generally reinforced with biopolymer matrices. These composites are known as green composites. In order to create an interfacial bond between hydrophilic fiber and hydrophobic biopolymer surface modification of natural fiber is needed. There are many physical and chemical methods of surface medication which enhance roughness, wettability as well as hydrophilicity, lowers moisture absorption, improve the interfacial bond, and also enhance the tensile properties of natural fiber. The review is on the classification of biopolymers, natural fibers and their properties as well as the surface modification techniques for plant fibers. Moreover, the fabrication, mechanical and chemical properties including biodegradation of different green composites and the application of green composites, are also discussed here.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"2 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-14DOI: 10.12688/materialsopenres.17666.1
Gabriele Baniulyte, Lorna Burns, K. Ali
Background Since 1982, guided tissue regeneration (GTR) has become increasingly popular. The recent progress in GTR research focuses on the application of blood-derived products. However, no comprehensive systematic review has been conducted to assess its effectiveness specifically in periradicular surgery. Therefore, the aim of this review was to analyse the outcomes of root-end surgery compared to periapical surgery incorporating GTR using blood-derived products. Methods This review involved randomised controlled trials exploring the comparison between GTR utilising blood-derived products and the conventional periapical surgery. The databases Embase, MEDLINE, Cochrane CENTRAL, and Dentistry and Oral Sciences Source were searched, with the most recent search conducted on December 16th, 2022. Additionally, reference lists of similar systematic reviews were examined, while international trials registries and repositories were consulted for unpublished studies. Two blinded independent reviewers carried out the screening and the included studies underwent critical appraisal. The findings are reported in accordance with the PRISMA guidelines. Results A total of 261 publications were initially reviewed based on their title and abstract, resulting in seventeen studies that underwent full-text screening. At this stage, 14 studies were excluded, leaving three randomised controlled trials to be included. These trials involved a combined total of 85 patients. A meta-analysis was conducted for the outcome of healing. The overall treatment effect was 0.78 (95% CI 0.18 to 3.34), indicating a preference towards the control group. Conclusion Based on a meta-analysis of three studies, there was no statistically significant distinction observed in terms of healing between the GTR involving blood-derived products and standard procedure groups. However, critical appraisal revealed indirectness and imprecision, resulting in a certainty rating of 'low'. Thus, additional robust evidence is necessary to support the utilisation of blood-derived products in GTR techniques to enhance periradicular surgery outcomes. Systematic review registration number PROSPERO CRD42020222663.
{"title":"Utilising blood-derived products for guided tissue regeneration in periradicular surgery: a systematic review and meta-analysis","authors":"Gabriele Baniulyte, Lorna Burns, K. Ali","doi":"10.12688/materialsopenres.17666.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17666.1","url":null,"abstract":"Background Since 1982, guided tissue regeneration (GTR) has become increasingly popular. The recent progress in GTR research focuses on the application of blood-derived products. However, no comprehensive systematic review has been conducted to assess its effectiveness specifically in periradicular surgery. Therefore, the aim of this review was to analyse the outcomes of root-end surgery compared to periapical surgery incorporating GTR using blood-derived products. Methods This review involved randomised controlled trials exploring the comparison between GTR utilising blood-derived products and the conventional periapical surgery. The databases Embase, MEDLINE, Cochrane CENTRAL, and Dentistry and Oral Sciences Source were searched, with the most recent search conducted on December 16th, 2022. Additionally, reference lists of similar systematic reviews were examined, while international trials registries and repositories were consulted for unpublished studies. Two blinded independent reviewers carried out the screening and the included studies underwent critical appraisal. The findings are reported in accordance with the PRISMA guidelines. Results A total of 261 publications were initially reviewed based on their title and abstract, resulting in seventeen studies that underwent full-text screening. At this stage, 14 studies were excluded, leaving three randomised controlled trials to be included. These trials involved a combined total of 85 patients. A meta-analysis was conducted for the outcome of healing. The overall treatment effect was 0.78 (95% CI 0.18 to 3.34), indicating a preference towards the control group. Conclusion Based on a meta-analysis of three studies, there was no statistically significant distinction observed in terms of healing between the GTR involving blood-derived products and standard procedure groups. However, critical appraisal revealed indirectness and imprecision, resulting in a certainty rating of 'low'. Thus, additional robust evidence is necessary to support the utilisation of blood-derived products in GTR techniques to enhance periradicular surgery outcomes. Systematic review registration number PROSPERO CRD42020222663.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"68 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-14DOI: 10.12688/materialsopenres.17659.1
R. Kondrotas, S. Bereznev, O. Volobujeva, Katri Muska, V. Pakštas, V. Klimas, M. Talaikis, R. Juškėnas, Arūnas Krotkus
Background ABX3 (X=Se, S) chalcogenides are an emerging class of materials for sustainable photovoltaics. Among ABX3 materials, BaZrS3 has gained the highest community interest. BaZrS3 is the wide bandgap absorber (> 1.7 eV) and therefore is intended for application as a top sub-cell in multijunction devices. However, narrow band gap ABX3 compounds have drawn little attention although this could potentially open the path for fabrication of multijunction solar cells based entirely on ABX3 materials. SnZrSe3 is a narrow bandgap semiconductor with an absorption edge located at around 1.0 eV, but there are no reports on the formation of SnZrSe3 thin films thus far. In this work, therefore, we aim to obtain SnZrSe3 thin films by sublimation methods. Methods Thermal evaporation and pulsed laser deposition (PLD) techniques were used to deposit Sn-Zr-Se precursor films. SnZrSe3 powder was synthesized and used as a source material for evaporation and PLD target preparation. Precursor films were deposited by PLD from single-phase and binary selenide targets. Results We found that using SnZrSe3 powder, only SnSe films were deposited under various conditions by thermal evaporation. Precursor films obtained by PLD from single-phase targets were amorphous and comprised SnSe2 and a-Se phases whereas using binary targets crystalline SnSe and a-Se were detected. Thermogravimetric analysis revealed that SnZrSe3 was thermally stable up to 450 °C and afterwards decomposed into SnSe, Se and ZrSe2-x. Conclusions Using methods described in this work, we were not able to achieve congruent sublimation of SnZrSe3 because of the following reasons: (i) upon energetic excitation, SnZrSe3 decomposes into compounds with very different vapour pressure; (ii) inability to substitute O with Se due to very high chemical affinity of Zr and O. Direct sublimation methods are challenging for formation of SnZrSe3 thin films and other techniques, such as co-evaporation should be explored.
{"title":"Deposition of Sn-Zr-Se precursor by thermal evaporation and PLD for the synthesis of SnZrSe3 thin films","authors":"R. Kondrotas, S. Bereznev, O. Volobujeva, Katri Muska, V. Pakštas, V. Klimas, M. Talaikis, R. Juškėnas, Arūnas Krotkus","doi":"10.12688/materialsopenres.17659.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17659.1","url":null,"abstract":"Background ABX3 (X=Se, S) chalcogenides are an emerging class of materials for sustainable photovoltaics. Among ABX3 materials, BaZrS3 has gained the highest community interest. BaZrS3 is the wide bandgap absorber (> 1.7 eV) and therefore is intended for application as a top sub-cell in multijunction devices. However, narrow band gap ABX3 compounds have drawn little attention although this could potentially open the path for fabrication of multijunction solar cells based entirely on ABX3 materials. SnZrSe3 is a narrow bandgap semiconductor with an absorption edge located at around 1.0 eV, but there are no reports on the formation of SnZrSe3 thin films thus far. In this work, therefore, we aim to obtain SnZrSe3 thin films by sublimation methods. Methods Thermal evaporation and pulsed laser deposition (PLD) techniques were used to deposit Sn-Zr-Se precursor films. SnZrSe3 powder was synthesized and used as a source material for evaporation and PLD target preparation. Precursor films were deposited by PLD from single-phase and binary selenide targets. Results We found that using SnZrSe3 powder, only SnSe films were deposited under various conditions by thermal evaporation. Precursor films obtained by PLD from single-phase targets were amorphous and comprised SnSe2 and a-Se phases whereas using binary targets crystalline SnSe and a-Se were detected. Thermogravimetric analysis revealed that SnZrSe3 was thermally stable up to 450 °C and afterwards decomposed into SnSe, Se and ZrSe2-x. Conclusions Using methods described in this work, we were not able to achieve congruent sublimation of SnZrSe3 because of the following reasons: (i) upon energetic excitation, SnZrSe3 decomposes into compounds with very different vapour pressure; (ii) inability to substitute O with Se due to very high chemical affinity of Zr and O. Direct sublimation methods are challenging for formation of SnZrSe3 thin films and other techniques, such as co-evaporation should be explored.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-14DOI: 10.12688/materialsopenres.17659.1
R. Kondrotas, S. Bereznev, O. Volobujeva, Katri Muska, V. Pakštas, V. Klimas, M. Talaikis, R. Juškėnas, Arūnas Krotkus
Background ABX3 (X=Se, S) chalcogenides are an emerging class of materials for sustainable photovoltaics. Among ABX3 materials, BaZrS3 has gained the highest community interest. BaZrS3 is the wide bandgap absorber (> 1.7 eV) and therefore is intended for application as a top sub-cell in multijunction devices. However, narrow band gap ABX3 compounds have drawn little attention although this could potentially open the path for fabrication of multijunction solar cells based entirely on ABX3 materials. SnZrSe3 is a narrow bandgap semiconductor with an absorption edge located at around 1.0 eV, but there are no reports on the formation of SnZrSe3 thin films thus far. In this work, therefore, we aim to obtain SnZrSe3 thin films by sublimation methods. Methods Thermal evaporation and pulsed laser deposition (PLD) techniques were used to deposit Sn-Zr-Se precursor films. SnZrSe3 powder was synthesized and used as a source material for evaporation and PLD target preparation. Precursor films were deposited by PLD from single-phase and binary selenide targets. Results We found that using SnZrSe3 powder, only SnSe films were deposited under various conditions by thermal evaporation. Precursor films obtained by PLD from single-phase targets were amorphous and comprised SnSe2 and a-Se phases whereas using binary targets crystalline SnSe and a-Se were detected. Thermogravimetric analysis revealed that SnZrSe3 was thermally stable up to 450 °C and afterwards decomposed into SnSe, Se and ZrSe2-x. Conclusions Using methods described in this work, we were not able to achieve congruent sublimation of SnZrSe3 because of the following reasons: (i) upon energetic excitation, SnZrSe3 decomposes into compounds with very different vapour pressure; (ii) inability to substitute O with Se due to very high chemical affinity of Zr and O. Direct sublimation methods are challenging for formation of SnZrSe3 thin films and other techniques, such as co-evaporation should be explored.
{"title":"Deposition of Sn-Zr-Se precursor by thermal evaporation and PLD for the synthesis of SnZrSe3 thin films","authors":"R. Kondrotas, S. Bereznev, O. Volobujeva, Katri Muska, V. Pakštas, V. Klimas, M. Talaikis, R. Juškėnas, Arūnas Krotkus","doi":"10.12688/materialsopenres.17659.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17659.1","url":null,"abstract":"Background ABX3 (X=Se, S) chalcogenides are an emerging class of materials for sustainable photovoltaics. Among ABX3 materials, BaZrS3 has gained the highest community interest. BaZrS3 is the wide bandgap absorber (> 1.7 eV) and therefore is intended for application as a top sub-cell in multijunction devices. However, narrow band gap ABX3 compounds have drawn little attention although this could potentially open the path for fabrication of multijunction solar cells based entirely on ABX3 materials. SnZrSe3 is a narrow bandgap semiconductor with an absorption edge located at around 1.0 eV, but there are no reports on the formation of SnZrSe3 thin films thus far. In this work, therefore, we aim to obtain SnZrSe3 thin films by sublimation methods. Methods Thermal evaporation and pulsed laser deposition (PLD) techniques were used to deposit Sn-Zr-Se precursor films. SnZrSe3 powder was synthesized and used as a source material for evaporation and PLD target preparation. Precursor films were deposited by PLD from single-phase and binary selenide targets. Results We found that using SnZrSe3 powder, only SnSe films were deposited under various conditions by thermal evaporation. Precursor films obtained by PLD from single-phase targets were amorphous and comprised SnSe2 and a-Se phases whereas using binary targets crystalline SnSe and a-Se were detected. Thermogravimetric analysis revealed that SnZrSe3 was thermally stable up to 450 °C and afterwards decomposed into SnSe, Se and ZrSe2-x. Conclusions Using methods described in this work, we were not able to achieve congruent sublimation of SnZrSe3 because of the following reasons: (i) upon energetic excitation, SnZrSe3 decomposes into compounds with very different vapour pressure; (ii) inability to substitute O with Se due to very high chemical affinity of Zr and O. Direct sublimation methods are challenging for formation of SnZrSe3 thin films and other techniques, such as co-evaporation should be explored.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"672 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-14DOI: 10.12688/materialsopenres.17666.1
Gabriele Baniulyte, Lorna Burns, K. Ali
Background Since 1982, guided tissue regeneration (GTR) has become increasingly popular. The recent progress in GTR research focuses on the application of blood-derived products. However, no comprehensive systematic review has been conducted to assess its effectiveness specifically in periradicular surgery. Therefore, the aim of this review was to analyse the outcomes of root-end surgery compared to periapical surgery incorporating GTR using blood-derived products. Methods This review involved randomised controlled trials exploring the comparison between GTR utilising blood-derived products and the conventional periapical surgery. The databases Embase, MEDLINE, Cochrane CENTRAL, and Dentistry and Oral Sciences Source were searched, with the most recent search conducted on December 16th, 2022. Additionally, reference lists of similar systematic reviews were examined, while international trials registries and repositories were consulted for unpublished studies. Two blinded independent reviewers carried out the screening and the included studies underwent critical appraisal. The findings are reported in accordance with the PRISMA guidelines. Results A total of 261 publications were initially reviewed based on their title and abstract, resulting in seventeen studies that underwent full-text screening. At this stage, 14 studies were excluded, leaving three randomised controlled trials to be included. These trials involved a combined total of 85 patients. A meta-analysis was conducted for the outcome of healing. The overall treatment effect was 0.78 (95% CI 0.18 to 3.34), indicating a preference towards the control group. Conclusion Based on a meta-analysis of three studies, there was no statistically significant distinction observed in terms of healing between the GTR involving blood-derived products and standard procedure groups. However, critical appraisal revealed indirectness and imprecision, resulting in a certainty rating of 'low'. Thus, additional robust evidence is necessary to support the utilisation of blood-derived products in GTR techniques to enhance periradicular surgery outcomes. Systematic review registration number PROSPERO CRD42020222663.
{"title":"Utilising blood-derived products for guided tissue regeneration in periradicular surgery: a systematic review and meta-analysis","authors":"Gabriele Baniulyte, Lorna Burns, K. Ali","doi":"10.12688/materialsopenres.17666.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17666.1","url":null,"abstract":"Background Since 1982, guided tissue regeneration (GTR) has become increasingly popular. The recent progress in GTR research focuses on the application of blood-derived products. However, no comprehensive systematic review has been conducted to assess its effectiveness specifically in periradicular surgery. Therefore, the aim of this review was to analyse the outcomes of root-end surgery compared to periapical surgery incorporating GTR using blood-derived products. Methods This review involved randomised controlled trials exploring the comparison between GTR utilising blood-derived products and the conventional periapical surgery. The databases Embase, MEDLINE, Cochrane CENTRAL, and Dentistry and Oral Sciences Source were searched, with the most recent search conducted on December 16th, 2022. Additionally, reference lists of similar systematic reviews were examined, while international trials registries and repositories were consulted for unpublished studies. Two blinded independent reviewers carried out the screening and the included studies underwent critical appraisal. The findings are reported in accordance with the PRISMA guidelines. Results A total of 261 publications were initially reviewed based on their title and abstract, resulting in seventeen studies that underwent full-text screening. At this stage, 14 studies were excluded, leaving three randomised controlled trials to be included. These trials involved a combined total of 85 patients. A meta-analysis was conducted for the outcome of healing. The overall treatment effect was 0.78 (95% CI 0.18 to 3.34), indicating a preference towards the control group. Conclusion Based on a meta-analysis of three studies, there was no statistically significant distinction observed in terms of healing between the GTR involving blood-derived products and standard procedure groups. However, critical appraisal revealed indirectness and imprecision, resulting in a certainty rating of 'low'. Thus, additional robust evidence is necessary to support the utilisation of blood-derived products in GTR techniques to enhance periradicular surgery outcomes. Systematic review registration number PROSPERO CRD42020222663.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"5 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139838522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-28DOI: 10.12688/materialsopenres.17622.1
Muhammed Alperen Polat, I. Efeoglu, Md Abdul Maleque, Gokhan Gulten, Y. Totik, Masjuki Bin Haji Hassan, Nurin Wahidah Zulkifli
Background The significance of multi-graded thin film coatings finds its devastating relevance in tribological applications due to their unique properties of friction and wear. This research aims to synthesize and characterize the multi-graded Ta/TaN thin film coatings on AISI 52100 steel, employing the high-power impulse magnetron sputtering technique. Methods The investigation includes the microstructure, coating thickness, elemental composition, microhardness, and tribological performance using scanning electron microscope (SEM), energy-dispersive x-ray spectroscopy (EDS), x-Ray diffraction analysis (XRD), microhardness tester, and pin-on-disc tester, respectively. Results Based on this systematic study, a noticeable reduction in the coefficient of friction was obtained due to the improved adhesion value exhibited by the multi-graded coating on the substrate. Conclusions The overall findings highlight the potential suitability of the multi-graded Ta/TaN thin film coating within the field of tribological applications.
{"title":"Characterization of Ta/TaN multi-graded thin film coating synthesized by HiPIMS technique","authors":"Muhammed Alperen Polat, I. Efeoglu, Md Abdul Maleque, Gokhan Gulten, Y. Totik, Masjuki Bin Haji Hassan, Nurin Wahidah Zulkifli","doi":"10.12688/materialsopenres.17622.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17622.1","url":null,"abstract":"Background The significance of multi-graded thin film coatings finds its devastating relevance in tribological applications due to their unique properties of friction and wear. This research aims to synthesize and characterize the multi-graded Ta/TaN thin film coatings on AISI 52100 steel, employing the high-power impulse magnetron sputtering technique. Methods The investigation includes the microstructure, coating thickness, elemental composition, microhardness, and tribological performance using scanning electron microscope (SEM), energy-dispersive x-ray spectroscopy (EDS), x-Ray diffraction analysis (XRD), microhardness tester, and pin-on-disc tester, respectively. Results Based on this systematic study, a noticeable reduction in the coefficient of friction was obtained due to the improved adhesion value exhibited by the multi-graded coating on the substrate. Conclusions The overall findings highlight the potential suitability of the multi-graded Ta/TaN thin film coating within the field of tribological applications.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139226515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-24DOI: 10.12688/materialsopenres.17559.1
Azemtsop Manfo Theodore
Despite significant efforts to identify other substituents, carbon remains the only economically viable negative electrode (anode) material for Li-ion batteries (LIBs). The current state of knowledge on the understanding, characterization, and improvement of carbon anode materials is reviewed. A brief history of developments in carbon host lattices is provided. The methodologies used to characterize the lithium insertion and de-insertion processes and a wide spectrum of carbon materials, from amorphous to highly oriented graphitic materials, are described. The basic studies of the electrochemical process on natural graphite and highly oriented pyrolitic graphite materials are then thoroughly examined. Following that, the issues and opportunities of several hard carbon compounds that boost battery capacity are examined. Several innovative carbon materials and carbon-based composites are also introduced. The electrochemical interaction of anode material with lithium could produce an intercalation product, which serves as the foundation for a novel battery system. Structural retention causes this reaction to proceed quickly and with a high degree of reversibility at room temperature. Titanium disulfide is one of the latest solid cathode materials. In this context, the paper presents a comprehensive theoretical comparison of the electrochemical electrical and physical properties of iron (Fe)-, cobalt (Co)-, manganese (Mn)-, chromium (Cr)-, and vanadium (V)-based LiMPO4 materials for cathode design in lithium (Li)-ion battery applications using the intercalation principle. The work highlighted many material and performance aspects of the cathode design, such as the cohesive energy of the material, Li-intercalation energy in olivine structure, and physical, electrochemical, and electrical analyses of LiMPO4 for rechargeable Li-ion batteries. We also examine the evolution of LIB technology based on the olive cathode materials, which are also evaluated.
{"title":"Structural, electrical, and electrochemical studies of the olivine LiMPO4 (M=Fe, Co, Cr, Mn, V) as cathode materials for lithium-ion rechargeable batteries based on the intercalation principle","authors":"Azemtsop Manfo Theodore","doi":"10.12688/materialsopenres.17559.1","DOIUrl":"https://doi.org/10.12688/materialsopenres.17559.1","url":null,"abstract":"Despite significant efforts to identify other substituents, carbon remains the only economically viable negative electrode (anode) material for Li-ion batteries (LIBs). The current state of knowledge on the understanding, characterization, and improvement of carbon anode materials is reviewed. A brief history of developments in carbon host lattices is provided. The methodologies used to characterize the lithium insertion and de-insertion processes and a wide spectrum of carbon materials, from amorphous to highly oriented graphitic materials, are described. The basic studies of the electrochemical process on natural graphite and highly oriented pyrolitic graphite materials are then thoroughly examined. Following that, the issues and opportunities of several hard carbon compounds that boost battery capacity are examined. Several innovative carbon materials and carbon-based composites are also introduced. The electrochemical interaction of anode material with lithium could produce an intercalation product, which serves as the foundation for a novel battery system. Structural retention causes this reaction to proceed quickly and with a high degree of reversibility at room temperature. Titanium disulfide is one of the latest solid cathode materials. In this context, the paper presents a comprehensive theoretical comparison of the electrochemical electrical and physical properties of iron (Fe)-, cobalt (Co)-, manganese (Mn)-, chromium (Cr)-, and vanadium (V)-based LiMPO4 materials for cathode design in lithium (Li)-ion battery applications using the intercalation principle. The work highlighted many material and performance aspects of the cathode design, such as the cohesive energy of the material, Li-intercalation energy in olivine structure, and physical, electrochemical, and electrical analyses of LiMPO4 for rechargeable Li-ion batteries. We also examine the evolution of LIB technology based on the olive cathode materials, which are also evaluated.","PeriodicalId":506868,"journal":{"name":"Materials Open Research","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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