Materials Letters最新文献_第6页

Effect of superabsorbent polymers on autogenous shrinkage of engineered geopolymer composites 高吸水性聚合物对工程地聚合物复合材料自收缩的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140204

Bicheng Jiang , Yi Zheng

引用次数: 0

Post-consumer crisp snack bags as sustainable triboelectric materials for energy harvesting devices 消费后的脆零食袋作为可持续的摩擦电材料的能量收集装置

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140172

Jose M. Esmeria Jr. , Dino F. Ligutan , Alexander C. Abad

{"title":"Post-consumer crisp snack bags as sustainable triboelectric materials for energy harvesting devices","authors":"Jose M. Esmeria Jr. , Dino F. Ligutan , Alexander C. Abad","doi":"10.1016/j.matlet.2026.140172","DOIUrl":"10.1016/j.matlet.2026.140172","url":null,"abstract":"<div><div>Clean and affordable energy is a key challenge for sustainable development. Triboelectric nanogenerators (TENGs) provide a low-cost solution, especially when made from repurposed waste materials. This study showcases the reuse of post-consumer snack packaging—specifically, multilayer polymer-metal films with biaxially oriented polypropylene (BOPP) surfaces—as functional dielectric layers in high-output TENGs. The packaging was analyzed using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), which confirmed that polypropylene (PP) is the primary material used in the dielectric. Four vertical contact–separation single-dielectric TENGs were fabricated using copper and aluminum electrodes paired with snack bags from different brands. The copper-electrode device achieved a maximum open-circuit voltage (V<sub>OC</sub>) of 1628.0 V<sub>PP</sub>, and a short-circuit current (I<sub>SC</sub>) of 112.0 μA, with a peak power density (PD) of 3.3 W/m<sup>2</sup>. It delivered a root-mean-square (rms) voltage of 56.5 V and a power density of 11 mW/m<sup>2</sup>, sufficient to power up to 327 light-emitting diodes (LEDs) and consumer electronics while maintaining robustness over 2841 cycles. These findings underscore the promise of upcycled snack packaging as a sustainable dielectric material for high-performance energy-harvesting applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140172"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the effects of zinc oxide nanoflakes synthesized from structurally diverse templates on cellular apoptosis and necrosis in Candida albicans 探讨不同结构模板合成氧化锌纳米片对白色念珠菌细胞凋亡和坏死的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140205

Aparna Kelkar , Amruta Shelar , Anaya Phatak , Joachim Bill , Ajay Vikram Singh , Bhushan Khairnar , Haribhau Gholap , Jaiprakash Sangshetti , Rajendra Patil

引用次数: 0

Influence of volumetric energy density on melt pool dynamics and defects formation in laser powder bed fused of K418 superalloy 体积能量密度对K418高温合金激光粉末床熔池动力学及缺陷形成的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-10 DOI: 10.1016/j.matlet.2026.140092

Yang Wang , Xing He , Zhaoxia Lu , Jinbin Pu

{"title":"Influence of volumetric energy density on melt pool dynamics and defects formation in laser powder bed fused of K418 superalloy","authors":"Yang Wang , Xing He , Zhaoxia Lu , Jinbin Pu","doi":"10.1016/j.matlet.2026.140092","DOIUrl":"10.1016/j.matlet.2026.140092","url":null,"abstract":"<div><div>Laser powder-bed fusion (LPBF) of the γ'-strengthened K418 superalloy is challenged by a narrow processing window and pronounced crack susceptibility associated with its high γ' fraction and wide solidification range. Here, a three- dimensional transient CFD model (Flow-3D, VOF-based) is established and experimentally validated to quantify VED-dependent melt-pool evolution in K418, incorporating melting/solidification, Marangoni convection, evaporation-induced recoil pressure, surface tension, and multiple laser reflections. Over a representative VED window (61.5–84.6 J/mm<sup>3</sup>), increasing VED enlarges melt-pool dimensions and strengthens internal convection. An intermediate VED regime (69.2–76.9 J/mm<sup>3</sup>) yields a stable toroidal vortex and a more homogeneous thermal–flow field, consistent with improved metallurgical bonding and reduced defect propensity. In contrast, excessive VED induces multiple vortices and keyhole instability, thereby increasing the susceptibility to pore formation and cracking. This work provides a K418-specific VED-vortex-stability map directly linked to experimentally observed defect transitions, offering a mechanistic basis for selecting a high-density, low-defect processing window.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140092"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the nitrate ion on the morphology and corrosion resistance of electrodeposited black chromium 硝酸根离子对电沉积黑铬形貌及耐蚀性的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140203

Viktoriia Shtefan , Anastasiia Shcholokova

引用次数: 0

Photocatalytic hydrogen production over SrLi2Ti6O14 material SrLi2Ti6O14材料的光催化制氢

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.matlet.2026.140210

Luis F. Garay-Rodríguez , Leticia M. Torres-Martínez

引用次数: 0

Influence of sensitization duration on the physical properties of chemically synthesized CdTe thin films for solar cell applications 敏化时间对太阳能电池用化学合成碲化镉薄膜物理性能的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-08 DOI: 10.1016/j.matlet.2026.140234

Abhijeet Shinde , Supriya Salunke , Rajendra Patil , Rahul G. Deshmukh , Yogesh G. Joshi

{"title":"Influence of sensitization duration on the physical properties of chemically synthesized CdTe thin films for solar cell applications","authors":"Abhijeet Shinde , Supriya Salunke , Rajendra Patil , Rahul G. Deshmukh , Yogesh G. Joshi","doi":"10.1016/j.matlet.2026.140234","DOIUrl":"10.1016/j.matlet.2026.140234","url":null,"abstract":"<div><div>CdTe nanocrystals were synthesized using a single-step chemical bath deposition process and provided as sensitizers on mesoporous SnO₂ photoanodes for semiconductor-sensitized solar cells. The influence of sensitization duration (1−3<em>h</em>) on the structural, optical, morphological and photovoltaic properties was examined. The analysis of X-ray diffraction provided the formation of polycrystalline cubic CdTe, and crystallite size ranging between 4 and 7 nm with an increase in sensitization time. UV–visible spectroscopy shown a red shift in absorption and a corresponding decrease in optical band gap from 1.60 to 1.46 eV. Morphological analyses presented enhanced CdTe surface coverage with increasing sensitization time. Photovoltaic measurements displayed that cell fabricated with a 2 h sensitization duration demonstrated optimal performance, achieving a maximum power conversion efficiency of 0.253 ± 0.028% under AM 1.5G illumination. The results highlight sensitization duration as a vital factor for optimizing CdTe-sensitized SnO₂ solar cells.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140234"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Micromodification of nickel-based coatings electrodeposited from a deep eutectic solvent with lanthanum as a way to improve electrocatalytic performance and corrosion resistance” [Mater. Lett. 370 (2024) 136892] “用镧在深度共晶溶剂中电沉积镍基涂层的微改性，以提高电催化性能和耐腐蚀性”的勘误[Mater]。Lett. 370 (2024) 136892]

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-12 DOI: 10.1016/j.matlet.2026.140232

V.S. Protsenko , O.D. Sukhatskyi , T.E. Butyrina , L.A. Frolova , S.A. Korniy

引用次数: 0

A method for characterizing the degradation of perovskite films under mechanical coupling using grayscale tracking and digital image correlation techniques 利用灰度跟踪和数字图像相关技术表征机械耦合作用下钙钛矿薄膜降解的方法

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-29 DOI: 10.1016/j.matlet.2026.140154

Chunhua Ren, Mengting Jiao, Hongwei Ji, Huaiwen Wang, Yutong Yan, Bing Liu

{"title":"A method for characterizing the degradation of perovskite films under mechanical coupling using grayscale tracking and digital image correlation techniques","authors":"Chunhua Ren, Mengting Jiao, Hongwei Ji, Huaiwen Wang, Yutong Yan, Bing Liu","doi":"10.1016/j.matlet.2026.140154","DOIUrl":"10.1016/j.matlet.2026.140154","url":null,"abstract":"<div><div>In the characterization of perovskite failure, conventional techniques face considerable challenges in achieving multiphysics coupling, in situ, non-destructive, rapid assessment, and spatial resolution. This study proposes an experimental method based on grayscale evolution and digital image correlation (DIC). Using large-grained MAPbI₃ thin films as the research object, this method enables pixel-level tracking of degradation evolution under illumination, voltage, and deformation conditions using optical microscopy. Experimental results demonstrate a strong correlation among grayscale evolution, crystal phase changes, and optoelectronic performance. Tensile strain accelerates degradation and leads to an earlier onset; in this study (<span><math><msub><mi>ε</mi><mi>Mises</mi></msub><mo>=</mo><mn>0.00895</mn></math></span>), the maximum degradation rate is approximately 1.5 times that of the strain-free condition. In addition, grain boundaries exhibit a certain hindering effect on strain transmission. Overall, this method provides an effective tool for investigating degradation under coupled multiphysics fields and for the rapid stability evaluation of perovskite materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140154"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanofiber incorporated composite aerogels with vertically aligned channels for enhanced solar-driven interfacial evaporation performance 纳米纤维将复合气凝胶与垂直排列的通道结合起来，增强了太阳能驱动的界面蒸发性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.matlet.2026.140179

Kai Zhang, Jingjing Wang, Xin Liu, Yang Yuan

引用次数: 0