Discover Materials最新文献

Challenges and knowledge gaps in corrosion and materials degradation of bioreactors for waste feedstocks. 废物原料生物反应器在腐蚀和材料降解方面的挑战和知识差距。

IF 5.8

Discover Materials Pub Date : 2026-01-01 Epub Date: 2026-06-05 DOI: 10.1007/s43939-026-00698-0

Maria Ramos-Suarez, Yue Zhang, Julian Wharton, Sonia Heaven

{"title":"Challenges and knowledge gaps in corrosion and materials degradation of bioreactors for waste feedstocks.","authors":"Maria Ramos-Suarez, Yue Zhang, Julian Wharton, Sonia Heaven","doi":"10.1007/s43939-026-00698-0","DOIUrl":"10.1007/s43939-026-00698-0","url":null,"abstract":"Industrial and environmental biotechnologies (IB/EnvB) are able to transform wastes and agro-industrial side-streams into bio-based products such as biomethane, biohydrogen, volatile fatty acids, lactic acid, succinic acid, ethanol, butanol, biosurfactants, enzymes and polyhydroxyalkanoates. Common corrosion drivers in the microbially-mediated production of these products are water, chlorides, hydrogen sulphide, acids, alcohols, biofilms, and concentration gradients or 'dead' zones within the bioreactor. The demand for cheaper bioreactor vessels, combined with the increasing use of these more challenging feedstocks, creates uncertainty about the durability of bioreactor materials. Current structural materials such as stainless steel, coated metals and composites offer good resistance to a wide range of exposure conditions; but may be more vulnerable to microbially-influenced corrosion and abrasion in novel bioprocesses utilising waste-type feedstocks. Existing standard test methods are insufficient, as they do not adequately characterise the potential for bioreactor materials degradation in realistic IB/EnvB conditions under long-term operation with combined corrosion-abrasion phenomena. Future research must prioritise identification and application of suitable testing strategies to ensure that the bioreactor manufacturing industry continues to provide reliable, cost-effective bioprocessing infrastructure for the new sustainable bio-economy.Graphical abstract: ","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"6 1","pages":"252"},"PeriodicalIF":5.8,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13457284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148713783","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}

引用次数: 0

Tribological and antibacterial behavior of Cu doped DLC coatings for biomedical implants. 生物医学植入物中Cu掺杂DLC涂层的摩擦学和抗菌性能。

IF 5.8

Discover Materials Pub Date : 2026-01-01 Epub Date: 2026-03-14 DOI: 10.1007/s43939-026-00628-0

Ayowolemiwa Victor Towobola, Amal George, Tonye Alaso Jack, Jenny-Lee Thomassin, Qiaoqin Yang

{"title":"Tribological and antibacterial behavior of Cu doped DLC coatings for biomedical implants.","authors":"Ayowolemiwa Victor Towobola, Amal George, Tonye Alaso Jack, Jenny-Lee Thomassin, Qiaoqin Yang","doi":"10.1007/s43939-026-00628-0","DOIUrl":"10.1007/s43939-026-00628-0","url":null,"abstract":"Cu-DLC coatings were deposited on CoCrMo alloys and silicon wafers using magnetron sputtering. Increasing the atomic percentage (at%) of Cu incorporated into the DLC coatings did not significantly alter their overall structure. However, X-ray diffraction results revealed structural differences with increasing Cu content, including larger crystallite sizes and a transition from a predominantly amorphous structure to a nanocrystalline phase. Significant changes in chemical bonding states were observed through Raman and X-ray photoelectron spectroscopy (XPS). Nanoindentation analysis showed reductions in both hardness and elastic modulus, which were inversely correlated with increasing Cu content. Moreover, the wear rate of Cu-DLC showed a greater decrease at 11.8 at% Cu compared to the other coating. Corrosion analysis further indicated that higher Cu content moderated the corrosion inhibition rate. Time course bacterial killing assays demonstrated that Cu contents between 11 and 15.2 at% in the DLC coatings effectively killed both Staphylococcus aureus and multi-drug resistant Klebsiella pneumoniae, with the highest Cu at% resulting in complete bacterial killing at all time points. Overall, incorporation of Cu into DLC coatings enhances corrosion and antibacterial activity with reduced mechanical integrity. An optimal balance between mechanical integrity and antibacterial function can be achieved by carefully controlling the amount of Cu incorporated into the DLC coatings.","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"6 1","pages":"148"},"PeriodicalIF":5.8,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13099718/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147783468","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}

引用次数: 0

Impact of mesoporous glass microbeads prepared from coal gasification fine slag on the performance of polypropylene composites 煤气化细渣制备介孔玻璃微珠对聚丙烯复合材料性能的影响

Discover Materials Pub Date : 2025-12-22 DOI: 10.1007/s43939-025-00515-0

Weidong Ai, Yuena Yu, Yongtao Li, Xuejian Zhang, Cundi Wei

{"title":"Impact of mesoporous glass microbeads prepared from coal gasification fine slag on the performance of polypropylene composites","authors":"Weidong Ai, Yuena Yu, Yongtao Li, Xuejian Zhang, Cundi Wei","doi":"10.1007/s43939-025-00515-0","DOIUrl":"https://doi.org/10.1007/s43939-025-00515-0","url":null,"abstract":"In this research, mesoporous glass microbeads are prepared by the in-situ acid soluble reaction of the hydrochloric acid using coal gasification fine slag. The metal oxides are dissolved in the microbeads, generating mesoporous channels, and mesoporous spherical silica is successfully synthesized after calcination to remove residual carbon. Spherical glass microbeads are subsequently incorporated into the polypropylene matrix to investigate the influence of silica pore structure on polypropylene composite properties. Experimental results demonstrate that the addition of mesoporous silica enhances flexural strength and thermal stability while simultaneously reducing elongation at break and impact strength of the polypropylene. The mechanical properties of the composites exhibit a non-monotonic relationship with the dosage of hydrochloric acid, initially improving and then deteriorating with the increasing acid consumption. Insufficient acid results in inadequate pore formation, whereas excessive acid causes structural collapse through active silicon-HCl reactions. Optimal composite performance is achieved at an acid-ash ratio of 1.0, establishing the most favorable binding configuration between filler and matrix. The comparative analysis of mechanical properties, thermodynamic behavior, and interfacial bonding confirm that the synthesized mesoporous silica from coal gasification fine slag can effectively substitute 1250-mesh heavy calcium powder to application in polypropylene.","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887936","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}

引用次数: 0

Zero temperature coefficient microwave alumina ceramics via TiO₂ doping and post sinter annealing 采用tio2掺杂和烧结后退火工艺制备零温度系数微波氧化铝陶瓷

Discover Materials Pub Date : 2025-11-17 DOI: 10.1007/s43939-025-00429-x

Yuting Xiao, Millicent Appiah, Burhan Ullah, Yixing Yang, Wayne D. Kaplan, Daniel Q. Tan

{"title":"Zero temperature coefficient microwave alumina ceramics via TiO₂ doping and post sinter annealing","authors":"Yuting Xiao, Millicent Appiah, Burhan Ullah, Yixing Yang, Wayne D. Kaplan, Daniel Q. Tan","doi":"10.1007/s43939-025-00429-x","DOIUrl":"https://doi.org/10.1007/s43939-025-00429-x","url":null,"abstract":"Alumina (Al₂O₃) is a promising candidate for microwave dielectric ceramics due to its exceptional quality factor (Qf ~ 333,000 GHz). This study investigates the influence of additions of titania (TiO₂) and annealing treatments on the dielectric properties of polycrystalline Al₂O₃. The dielectric properties of Al₂O₃-x wt% TiO₂ (x = 2.5, 5, 7.5, 10) were evaluated after various heat treatment conditions. The optimal composition, Al₂O₃-7.5 wt% TiO₂, achieved notable properties when sintered at 1400 °C for 8 h: a relative permittivity (εr) of 10.73 and a quality factor-frequency product (Qf) of 126,347 GHz at 13.814 GHz. Specifically, subsequent annealing at 1000 °C for 5 h adjusted the temperature coefficient of frequency ( $$:{tau}_{f}$$ ) to + 1.25 ppm/°C, near zero. The study reveals that the thermal treatment induces the decomposition of Al₂TiO₅ into Al₂O₃ and TiO₂, accompanied by titanium redistribution. Characterization using X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and dielectric measurements established correlations between the microstructure and properties. This work provides a scalable framework for designing ultra-stable millimeter-wave ceramics, particularly for 5G/6G resonators and satellite communication systems, where minimal signal delay and thermal drift are critical.","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43939-025-00429-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331138","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}

引用次数: 0

Carbon quantum dots modified 3D flower-like BiOCl nanostructures with enhanced visible light photocatalytic degradation of rhodamine B 碳量子点修饰三维花状BiOCl纳米结构增强可见光光催化降解罗丹明B

Discover Materials Pub Date : 2025-02-12 DOI: 10.1007/s43939-025-00202-0

Jiaxin Li, Xinyuan Li, Xia Li

{"title":"Carbon quantum dots modified 3D flower-like BiOCl nanostructures with enhanced visible light photocatalytic degradation of rhodamine B","authors":"Jiaxin Li, Xinyuan Li, Xia Li","doi":"10.1007/s43939-025-00202-0","DOIUrl":"https://doi.org/10.1007/s43939-025-00202-0","url":null,"abstract":"Abstract In this work, a series of carbon quantum dot (CQDs) modified three-dimensional flower-like BiOCl microspheres were synthesized using a simple solvothermal method.A multitude of techniques like XRD, TEM, XPS, BET, XPS UV–vis, PL and EPR were employed to investigate the morphology, structure, optical and electronic properties as well as photocatalytic performance of the samples. The BC-1.5 photocatalyst displays the he best-performing photocatalytic degradation rate of 99% for Rhodamine B (RhB) degradation under visible-light irradiation within 30 min. The photoactivity is 5.3 times of that of the bare BiOCl. This unique three-dimensional flower-like structure can provide a large number of reaction sites and stronger internal light reflection, which can enhance the absorption of photons. Meanwhile, CQDs enable faster charge transfer and more effective separation of photogenerated charge carriers, thereby increasing the degradation rate. The mechanism of photocatalysis was further proposed, and the charge transfer and active substances formed during photocatalysis were unfolded. This study provides a new opportunity for rational design of efficient photocatalysts in environmental remediation.","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43939-025-00202-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147893977","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}

引用次数: 10

In-situ microscopy and digital image correlation to study the mechanical characteristics of polymer-based materials. 原位显微镜和数字图像相关研究聚合物基材料的力学特性。

IF 5.8

Discover Materials Pub Date : 2025-01-01 Epub Date: 2025-02-18 DOI: 10.1007/s43939-025-00208-8

Seyedtaghi Mousavi, John G Hardy

引用次数: 0

Transdermal microneedle patch for antioxidants release. 抗氧化剂释放透皮微针贴片。

Discover Materials Pub Date : 2025-01-01 Epub Date: 2025-03-22 DOI: 10.1007/s43939-025-00240-8

Samuel Mugo, Scott Robertson, Weihao Lu

{"title":"Transdermal microneedle patch for antioxidants release.","authors":"Samuel Mugo, Scott Robertson, Weihao Lu","doi":"10.1007/s43939-025-00240-8","DOIUrl":"10.1007/s43939-025-00240-8","url":null,"abstract":"Polymer based microneedle transdermal drug delivery system fits the criterion for an efficient patient compliant drug delivery system of the future. Smart and controlled microneedle drug delivery systems remain an emerging research area. One of the objectives of this study was to design an accessible approach of molding microneedles using a beeswax mold. The second objective was to evaluate a polymer-based microneedle drug release transdermal platform fabricated via layer by layer (LbL) assembly of conductive polydimethylsiloxane integrated with carbon nanotubes, cellulose nanocrystal and polyaniline (PDMS@CNT/CNC@PANI). The electrically conductive PDMS@CNT/CNC@PANI microneedle patch provides a platform for drug loading, stabilization and transdermal controlled drug release. The drug loaded PDMS@CNT/CNC@PANI microneedle patch was evaluated for diffusion and voltage mediated transdermal delivery of thymol blue and rutin as model compounds. Chicken skin was used as an analogue of human skin. Both electrochemical and passive release from the rutin loaded PDMS@CNC/CNT microneedle patch resulted in ~ 66%. On the other hand, the PDMS@CNC/CNT@PANI patch loaded with rutin resulted in 66-84% release. The results show the novel microneedle patches could effectively release rutin in a controlled manner, and as such showed promise for potential use in clinical drug release applications.Graphical abstract: Supplementary information: The online version contains supplementary material available at 10.1007/s43939-025-00240-8.","PeriodicalId":34625,"journal":{"name":"Discover Materials","volume":"5 1","pages":"64"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11929698/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143701701","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}

引用次数: 0

Microstructural analysis and densification of ordinary Portland cement mortars incorporated with minimal nano-TiO2: intermixing and surface coating on both fresh and hardened surfaces 掺入极少量纳米二氧化钛的普通硅酸盐水泥砂浆的微观结构分析和致密化：新拌和物和硬化表面的表面涂层

Discover Materials Pub Date : 2024-07-24 DOI: 10.1007/s43939-024-00096-4

N. A. Reddy, P. S. Chandana

引用次数: 0

Product classes characterization at micro-scale level applied to granular wastes fractions < 20 mm: a case-study 应用于小于 20 毫米的颗粒状废物馏分的微尺度产品类别表征：案例研究

Discover Materials Pub Date : 2024-07-18 DOI: 10.1007/s43939-024-00092-8

Daniela Rizzo, Anna Somigliana, Stefania Marmai, Debora Cusumano, Laura Clerici, Marco Volante

引用次数: 0

Pressureless sintering kinetics analysis of Ti3SiC2 and Ti2AlC powdered MAX phases Ti3SiC2 和 Ti2AlC 粉末 MAX 相的无压烧结动力学分析

Discover Materials Pub Date : 2024-07-16 DOI: 10.1007/s43939-024-00098-2

J. M. Córdoba Gallego

引用次数: 0