Electrical control of the anomalous Hall effect (AHE) provides an important gateway to reveal and regulate topological properties of spins. However, direct, immediate electrical tuning of the AHE in materials has been elusive, unfeasible, and rarely reported. Here, we demonstrate direct, immediate, nonlinear, electric current regulation of the AHE in a single, novel, van der Waals, room-temperature, ferromagnetic, ultrathin, two-dimensional (2D) crystal for intrinsic sensitivity of nodal electronic structures induced by 2D spin-orbit coupling (SOC) in a 2D quantum limit with an ultrasmall current (∼102 A cm−2). The multivalued electrical tuning of anomalous Hall resistance (RAHE) () is up to 584% and remains 126% at room temperature. The squared correlation between RAHE and longitudinal resistance indicates an SOC-dominated Berry curvature-induced AHE. This immediate-current AHE with distinct dependence on the dimension, crystal layer, and electronic topology provides unique quantum platforms for probing the essence of the dimension and for low-power spintronics and brain-like quantum devices.
{"title":"Immediate ultrasmall current-tunable anomalous Hall effect","authors":"Li Yang, Hao Wu, Fei Guo, Gaojie Zhang, Wenfeng Zhang, Haixin Chang","doi":"10.1016/j.matt.2024.101940","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101940","url":null,"abstract":"Electrical control of the anomalous Hall effect (AHE) provides an important gateway to reveal and regulate topological properties of spins. However, direct, immediate electrical tuning of the AHE in materials has been elusive, unfeasible, and rarely reported. Here, we demonstrate direct, immediate, nonlinear, electric current regulation of the AHE in a single, novel, van der Waals, room-temperature, ferromagnetic, ultrathin, two-dimensional (2D) crystal for intrinsic sensitivity of nodal electronic structures induced by 2D spin-orbit coupling (SOC) in a 2D quantum limit with an ultrasmall current (∼10<sup>2</sup> A cm<sup>−2</sup>). The multivalued electrical tuning of anomalous Hall resistance (R<sub>AHE</sub>) (<span><math><mrow is=\"true\"><mfrac is=\"true\"><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\" mathvariant=\"bold-italic\">R</mi><mrow is=\"true\"><mi is=\"true\" mathvariant=\"bold-italic\">A</mi><mi is=\"true\" mathvariant=\"bold-italic\">H</mi><mi is=\"true\" mathvariant=\"bold-italic\">E</mi></mrow></msub><mn is=\"true\" mathvariant=\"bold\">1</mn></mrow><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\" mathvariant=\"bold-italic\">R</mi><mrow is=\"true\"><mi is=\"true\" mathvariant=\"bold-italic\">A</mi><mi is=\"true\" mathvariant=\"bold-italic\">H</mi><mi is=\"true\" mathvariant=\"bold-italic\">E</mi></mrow></msub><mn is=\"true\" mathvariant=\"bold\">2</mn></mrow></mfrac><mo is=\"true\">∗</mo><mn is=\"true\" mathvariant=\"bold\">100</mn><mo is=\"true\">%</mo></mrow></math></span>) is up to 584% and remains 126% at room temperature. The squared correlation between R<sub>AHE</sub> and longitudinal resistance indicates an SOC-dominated Berry curvature-induced AHE. This immediate-current AHE with distinct dependence on the dimension, crystal layer, and electronic topology provides unique quantum platforms for probing the essence of the dimension and for low-power spintronics and brain-like quantum devices.","PeriodicalId":388,"journal":{"name":"Matter","volume":"120 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-14DOI: 10.1016/j.matt.2024.101947
Amal Abbas, Janna Sofia Sage-Sepulveda, Kuldeep Mahato, Maryam Siddiqui, Aishwarya Balaje, Baha Öndeş, Joseph Wang
Ensuring patient compliance is crucial for effective treatment, particularly in cases of polypharmacy. To tackle this issue, we developed a time-tunable multi-segment capsule for tailored daylong delivery of multiple drugs or dosages. In this multi-segment daily capsule (MSDC), each drug payload is spatially isolated by an enteric barrier. By controlling the polymer density within the barrier matrix, the dissolution time and release of each corresponding drug can be tuned. Embedding robotic capabilities within specific drug segments facilitates immediate drug disintegration for pain management and emergency response. In vitro testing of robotic levodopa MSDCs demonstrated a timed, multiple-dose release profile offering fast, intermediate, and sustained releases to address motor symptoms in persons with Parkinson’s disease. Tuning the loading of Mg micromotors allows them to function as proton pump inhibitors for pH-responsive intervention in gastric disorders. The MSDC promotes personalized medication and simplifies complex treatment regimens by customizing the therapeutic payload and the release time.
{"title":"Daily multi-segment capsule for time-tunable drug release toward enhanced polypharmacy adherence","authors":"Amal Abbas, Janna Sofia Sage-Sepulveda, Kuldeep Mahato, Maryam Siddiqui, Aishwarya Balaje, Baha Öndeş, Joseph Wang","doi":"10.1016/j.matt.2024.101947","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101947","url":null,"abstract":"Ensuring patient compliance is crucial for effective treatment, particularly in cases of polypharmacy. To tackle this issue, we developed a time-tunable multi-segment capsule for tailored daylong delivery of multiple drugs or dosages. In this multi-segment daily capsule (MSDC), each drug payload is spatially isolated by an enteric barrier. By controlling the polymer density within the barrier matrix, the dissolution time and release of each corresponding drug can be tuned. Embedding robotic capabilities within specific drug segments facilitates immediate drug disintegration for pain management and emergency response. <em>In vitro</em> testing of robotic levodopa MSDCs demonstrated a timed, multiple-dose release profile offering fast, intermediate, and sustained releases to address motor symptoms in persons with Parkinson’s disease. Tuning the loading of Mg micromotors allows them to function as proton pump inhibitors for pH-responsive intervention in gastric disorders. The MSDC promotes personalized medication and simplifies complex treatment regimens by customizing the therapeutic payload and the release time.","PeriodicalId":388,"journal":{"name":"Matter","volume":"29 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oral protein/peptide delivery systems have garnered global interest due to their potential to provide substantial benefits to patients. However, their clinical translation has been impeded by challenges pertinent to poor intestinal permeability, acid instability, and the short half-life of proteins/peptides. Here, we report a simple, efficient, and sustained-release oral insulin delivery system based on folic acid (FA)-conjugated acid-resistant metal-organic framework (MOF) nanoparticles with high drug-loading capacity. The FA conjugation on MOF (PCN-777) nanoparticles not only selectively augmented intestinal transportation efficiency in diabetic animals via upregulated intestinal FA transporter-mediated endocytosis but they also tuned PCN-777 disintegration in the phosphate-rich bloodstream environment to sustain long-acting basal insulin release kinetics within a narrow therapeutic range. In diabetic animal models, the FA-PCN-777 oral insulin delivery nanosystem exhibited a smooth hypoglycemic effect for up to 48 h and a markedly high bioavailability of 35.5%, representing a potential long-acting oral formulation with reduced hypoglycemia risk.
{"title":"Efficient oral insulin delivery with sustained release by folate-conjugated metal-organic framework nanoparticles","authors":"Jun-Jie Zou, Qing Chen, Joshua Phipps, Yu Zhao, Xudong Qin, Wanyi Tai, Shengqian Ma, Jian Tian","doi":"10.1016/j.matt.2024.101948","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101948","url":null,"abstract":"Oral protein/peptide delivery systems have garnered global interest due to their potential to provide substantial benefits to patients. However, their clinical translation has been impeded by challenges pertinent to poor intestinal permeability, acid instability, and the short half-life of proteins/peptides. Here, we report a simple, efficient, and sustained-release oral insulin delivery system based on folic acid (FA)-conjugated acid-resistant metal-organic framework (MOF) nanoparticles with high drug-loading capacity. The FA conjugation on MOF (PCN-777) nanoparticles not only selectively augmented intestinal transportation efficiency in diabetic animals via upregulated intestinal FA transporter-mediated endocytosis but they also tuned PCN-777 disintegration in the phosphate-rich bloodstream environment to sustain long-acting basal insulin release kinetics within a narrow therapeutic range. In diabetic animal models, the FA-PCN-777 oral insulin delivery nanosystem exhibited a smooth hypoglycemic effect for up to 48 h and a markedly high bioavailability of 35.5%, representing a potential long-acting oral formulation with reduced hypoglycemia risk.","PeriodicalId":388,"journal":{"name":"Matter","volume":"26 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Innovative “parallel+uniaxial” conjugated electrospinning is advanced and utilized to synthesize a unique {[CsPbBr3/polystyrene (PS)]//[CoFe2O4/PS]}||[CsPb(Br0.06/I0.94)3/PS] analogous-tricolor microfiber film (ATMF) with multicolor emission and tunable magnetism. This analogous-tricolor microfiber as a structural element accomplishes three independent microcosmic partitions to assemble CsPbBr3 perovskite quantum dots (QDs) with green fluorescence, CsPb(Br0.06/I0.94)3 QDs with red fluorescence, and magnetic CoFe2O4 into their respective partitions. As a result, the adverse impacts of dark-colored CoFe2O4 on the fluorescence of the two perovskite QDs are shunned, and the microcosmic spatial separation of the two kinds of perovskite QDs fully addresses infaust halogen anion exchange between them to receive super fluorescence-magnetic bifuction. The light-emitting diodes (LEDs) packaged using blue chips and ATMF as phosphor exhibit white-light fluorescence. The formation mechanisms of the analogous-tricolor microfiber and ATMF are advanced, and corresponding facile construction techniques are established to shun complex processes. This work provides support for the design and preparation of other multifunctional materials.
{"title":"“Parallel+uniaxial” conjugated electrospinning for dual-function analogous-tricolor microfiber film with multicolor emission and magnetism","authors":"Xintong Huo, Yunrui Xie, Yuqi Sheng, Yaolin Hu, Haina Qi, Hong Shao, Qianli Ma, Wensheng Yu, Guixia Liu, Xiangting Dong","doi":"10.1016/j.matt.2024.101946","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101946","url":null,"abstract":"Innovative “parallel+uniaxial” conjugated electrospinning is advanced and utilized to synthesize a unique {[CsPbBr<sub>3</sub>/polystyrene (PS)]//[CoFe<sub>2</sub>O<sub>4</sub>/PS]}||[CsPb(Br<sub>0.06</sub>/I<sub>0.94</sub>)<sub>3</sub>/PS] analogous-tricolor microfiber film (ATMF) with multicolor emission and tunable magnetism. This analogous-tricolor microfiber as a structural element accomplishes three independent microcosmic partitions to assemble CsPbBr<sub>3</sub> perovskite quantum dots (QDs) with green fluorescence, CsPb(Br<sub>0.06</sub>/I<sub>0.94</sub>)<sub>3</sub> QDs with red fluorescence, and magnetic CoFe<sub>2</sub>O<sub>4</sub> into their respective partitions. As a result, the adverse impacts of dark-colored CoFe<sub>2</sub>O<sub>4</sub> on the fluorescence of the two perovskite QDs are shunned, and the microcosmic spatial separation of the two kinds of perovskite QDs fully addresses infaust halogen anion exchange between them to receive super fluorescence-magnetic bifuction. The light-emitting diodes (LEDs) packaged using blue chips and ATMF as phosphor exhibit white-light fluorescence. The formation mechanisms of the analogous-tricolor microfiber and ATMF are advanced, and corresponding facile construction techniques are established to shun complex processes. This work provides support for the design and preparation of other multifunctional materials.","PeriodicalId":388,"journal":{"name":"Matter","volume":"8 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-13DOI: 10.1016/j.matt.2024.101942
Jie Shen, Yun Wang, Min Yao, Shubo Liu, Zhiguang Guo, Li Zhang, Ben Wang
Lumbar puncture is a minimally invasive technique for delivering drugs into cerebrospinal fluid (CSF). However, its effectiveness is limited by the spine’s extensive length and the narrow, complex CSF spaces, which hinder efficient passive diffusion of therapeutic agents. Here, we have engineered a differentiable stem cell-assembled soft robot (SCASR) by using a three-dimensional self-assembly process in liquid marbles. These biologically viable robots can interface with the tissues inside the CSF, adapting to the complex surroundings while navigating. With X-ray imaging and magnetic actuation, the SCASRs can be guided toward targeted regions. The SCASRs autonomously disassemble into individual cells, which then differentiate into neural cells to facilitate the restoration of neural connections, thereby aiding the recovery of paralyzed lower limbs. The proposed strategy provides an imaging-based therapeutic system for nerve injury, enabling accessibility of hard-to-reach spinal regions and facilitating efficient therapy in minimally invasive manner, by means of soft microrobots.
{"title":"Long-span delivery of differentiable hybrid robots for restoration of neural connections","authors":"Jie Shen, Yun Wang, Min Yao, Shubo Liu, Zhiguang Guo, Li Zhang, Ben Wang","doi":"10.1016/j.matt.2024.101942","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101942","url":null,"abstract":"Lumbar puncture is a minimally invasive technique for delivering drugs into cerebrospinal fluid (CSF). However, its effectiveness is limited by the spine’s extensive length and the narrow, complex CSF spaces, which hinder efficient passive diffusion of therapeutic agents. Here, we have engineered a differentiable stem cell-assembled soft robot (SCASR) by using a three-dimensional self-assembly process in liquid marbles. These biologically viable robots can interface with the tissues inside the CSF, adapting to the complex surroundings while navigating. With X-ray imaging and magnetic actuation, the SCASRs can be guided toward targeted regions. The SCASRs autonomously disassemble into individual cells, which then differentiate into neural cells to facilitate the restoration of neural connections, thereby aiding the recovery of paralyzed lower limbs. The proposed strategy provides an imaging-based therapeutic system for nerve injury, enabling accessibility of hard-to-reach spinal regions and facilitating efficient therapy in minimally invasive manner, by means of soft microrobots.","PeriodicalId":388,"journal":{"name":"Matter","volume":"50 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Advancing organic photoelectric synapses for circularly polarized light (CPL) detection poses challenges in balancing CPL discrimination and photoelectric conversion efficiency. In this study, we reveal an innovative heterojunction consisting of two-dimensional molecular crystal (2DMC) and cholesteric liquid crystal network (CLCN) film to achieve high-performance CPL-resolved synapses. The periodically ordered molecular packing and molecular-scale thickness of 2DMC amplify the efficient exciton dissociation, consequently endowing the synaptic phototransistor with exceptional responsivity of 3.45 × 104 A W−1. Harnessing the intrinsic chiroptical of the CLCN film on the 2DMC, the device manifests a distinguished synaptic response to CPL stimuli, as substantiated by a significant dissymmetry factor of 1.97. Furthermore, the binary output states corresponding to distinct excitatory postsynaptic current levels facilitate robust chiroptical data encoding and encryption. Our innovative integration within polarized neuromorphic vision bolsters the capabilities of photonic devices and ushers in new frontiers for secure visual data encoding and transmission.
{"title":"Chiroptical organic heterojunction synaptic phototransistor exhibiting near-theoretical limit asymmetry factor for neuromorphic cryptography","authors":"Yu Zhang, Meiqiu Dong, Yuhan Du, Shuyuan Yang, Yiwen Ren, Yangwu Guo, Dongning Gao, Xiaolong Lin, Dong Yuan, Guofu Zhou, Yujie Yan, Lingjie Sun, Rongjin Li, Fangxu Yang, Wenping Hu","doi":"10.1016/j.matt.2024.101945","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101945","url":null,"abstract":"Advancing organic photoelectric synapses for circularly polarized light (CPL) detection poses challenges in balancing CPL discrimination and photoelectric conversion efficiency. In this study, we reveal an innovative heterojunction consisting of two-dimensional molecular crystal (2DMC) and cholesteric liquid crystal network (CLCN) film to achieve high-performance CPL-resolved synapses. The periodically ordered molecular packing and molecular-scale thickness of 2DMC amplify the efficient exciton dissociation, consequently endowing the synaptic phototransistor with exceptional responsivity of 3.45 × 10<sup>4</sup> A W<sup>−1</sup>. Harnessing the intrinsic chiroptical of the CLCN film on the 2DMC, the device manifests a distinguished synaptic response to CPL stimuli, as substantiated by a significant dissymmetry factor of 1.97. Furthermore, the binary output states corresponding to distinct excitatory postsynaptic current levels facilitate robust chiroptical data encoding and encryption. Our innovative integration within polarized neuromorphic vision bolsters the capabilities of photonic devices and ushers in new frontiers for secure visual data encoding and transmission.","PeriodicalId":388,"journal":{"name":"Matter","volume":"58 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.matt.2024.101941
Ian R. Campbell, Ziyue Dong, Paul Grandgeorge, Andrew M. Jimenez, Emily R. Rhodes, Ella Lee, Scott Edmundson, Chinmayee V. Subban, Kayla G. Sprenger, Eleftheria Roumeli
Unaltered biological matter (biomatter) can be harnessed to fabricate cohesive, sustainable bioplastics. However, controlling the material properties of these bioplastics is challenging, as the contributions of different macromolecular building blocks to processability and performance are unknown. To deconvolute the roles of different classes of biomolecules, we developed experimental and computational methods to construct and analyze biomatter analogs composed of carbohydrates, proteins, and lipids. These analogs are intended to improve fundamental understanding of biomatter plastics. Spectroscopic analyses of biomatter analogs suggest that cohesion depends on protein aggregation during thermomechanical processing. Molecular dynamics simulations confirm that alterations to protein conformation and hydrogen bonding are likely the primary mechanisms underlying the formation of a cohesive, proteinaceous matrix. Simulations also corroborate experimental measurements highlighting the importance of hydrogen bonding and self-assembly between specific, small-molecule constituents. These conclusions may enable the engineering of next-generation biomatter plastics with improved performance.
{"title":"The role of biomolecular building blocks on the cohesion of biomatter plastics","authors":"Ian R. Campbell, Ziyue Dong, Paul Grandgeorge, Andrew M. Jimenez, Emily R. Rhodes, Ella Lee, Scott Edmundson, Chinmayee V. Subban, Kayla G. Sprenger, Eleftheria Roumeli","doi":"10.1016/j.matt.2024.101941","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101941","url":null,"abstract":"Unaltered biological matter (biomatter) can be harnessed to fabricate cohesive, sustainable bioplastics. However, controlling the material properties of these bioplastics is challenging, as the contributions of different macromolecular building blocks to processability and performance are unknown. To deconvolute the roles of different classes of biomolecules, we developed experimental and computational methods to construct and analyze biomatter analogs composed of carbohydrates, proteins, and lipids. These analogs are intended to improve fundamental understanding of biomatter plastics. Spectroscopic analyses of biomatter analogs suggest that cohesion depends on protein aggregation during thermomechanical processing. Molecular dynamics simulations confirm that alterations to protein conformation and hydrogen bonding are likely the primary mechanisms underlying the formation of a cohesive, proteinaceous matrix. Simulations also corroborate experimental measurements highlighting the importance of hydrogen bonding and self-assembly between specific, small-molecule constituents. These conclusions may enable the engineering of next-generation biomatter plastics with improved performance.","PeriodicalId":388,"journal":{"name":"Matter","volume":"24 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.matt.2024.101944
Hong Luo, Zhimin Pan, Tao Yang, Weiwei Chang, Dawei Zhang, Hongxu Cheng, Xiaogang Li, Dierk Raabe
The growing demand for metallic materials resistant to both environmental corrosion and hydrogen embrittlement under municipal wastewater conditions presents a significant challenge. Achieving superior resistance to both simultaneously is difficult due to microbial and acid-induced corrosion in wastewater alongside hydrogen embrittlement caused by the generation of free hydrogen during corrosion. These complex loading scenarios require materials capable of withstanding both forms of degradation. Here, we present a FeCoMnNiCu alloy, designed using the multiprincipal element concept, which forms a protective passive film and exhibits high resistance to both microbial and oxidative acid-induced corrosion. Furthermore, it shows exceptional resistance to hydrogen embrittlement with a hydrogen embrittlement index of approximately 4.01%. This is achievable because the alloy has a very low hydrogen diffusion coefficient and promotes hydrogen-induced twinning through the reduction of stacking fault energy. These properties establish the new alloy as a promising solution for components exposed to corrosive, hydrogen-rich municipal wastewater environments.
{"title":"A high-entropy alloy for superior resistance to biogenic sulfuric acid corrosion and hydrogen embrittlement","authors":"Hong Luo, Zhimin Pan, Tao Yang, Weiwei Chang, Dawei Zhang, Hongxu Cheng, Xiaogang Li, Dierk Raabe","doi":"10.1016/j.matt.2024.101944","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101944","url":null,"abstract":"The growing demand for metallic materials resistant to both environmental corrosion and hydrogen embrittlement under municipal wastewater conditions presents a significant challenge. Achieving superior resistance to both simultaneously is difficult due to microbial and acid-induced corrosion in wastewater alongside hydrogen embrittlement caused by the generation of free hydrogen during corrosion. These complex loading scenarios require materials capable of withstanding both forms of degradation. Here, we present a FeCoMnNiCu alloy, designed using the multiprincipal element concept, which forms a protective passive film and exhibits high resistance to both microbial and oxidative acid-induced corrosion. Furthermore, it shows exceptional resistance to hydrogen embrittlement with a hydrogen embrittlement index of approximately 4.01%. This is achievable because the alloy has a very low hydrogen diffusion coefficient and promotes hydrogen-induced twinning through the reduction of stacking fault energy. These properties establish the new alloy as a promising solution for components exposed to corrosive, hydrogen-rich municipal wastewater environments.","PeriodicalId":388,"journal":{"name":"Matter","volume":"14 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-10DOI: 10.1016/j.matt.2024.101943
Martin T. Dove, Li Li
Cordierite, Mg2Al4Si5O18, finds widespread use as a high-performance material because of its very low thermal expansion, but its thermal properties are not understood at a fundamental level. Here we examine the thermal expansion in cordierite using lattice dynamics and molecular dynamics simulations with transferable force fields. The model reproduces the low positive thermal expansion along the orthorhombic [1,0,0] and [0,1,0] directions and the negative thermal expansion (NTE) along the [0,0,1] direction. Calculations of the mode strain Grüneisen parameters show that many phonon branches up to 10 THz contribute to the NTE. The overall strain Grüneisen parameters give similar results for the three principal strains: all are negative at lower temperatures and positive at higher temperatures. While they show the presence of a significant tension effect, the overall behavior is controlled by the form of the elastic compliance tensor. The results will usefully inform future studies of anisotropic systems.
{"title":"Anomalous thermal expansion of cordierite, Mg2Al4Si5O18, understood through lattice simulations","authors":"Martin T. Dove, Li Li","doi":"10.1016/j.matt.2024.101943","DOIUrl":"https://doi.org/10.1016/j.matt.2024.101943","url":null,"abstract":"Cordierite, Mg<sub>2</sub>Al<sub>4</sub>Si<sub>5</sub>O<sub>18</sub>, finds widespread use as a high-performance material because of its very low thermal expansion, but its thermal properties are not understood at a fundamental level. Here we examine the thermal expansion in cordierite using lattice dynamics and molecular dynamics simulations with transferable force fields. The model reproduces the low positive thermal expansion along the orthorhombic [1,0,0] and [0,1,0] directions and the negative thermal expansion (NTE) along the [0,0,1] direction. Calculations of the mode strain Grüneisen parameters show that many phonon branches up to 10 THz contribute to the NTE. The overall strain Grüneisen parameters give similar results for the three principal strains: all are negative at lower temperatures and positive at higher temperatures. While they show the presence of a significant tension effect, the overall behavior is controlled by the form of the elastic compliance tensor. The results will usefully inform future studies of anisotropic systems.","PeriodicalId":388,"journal":{"name":"Matter","volume":"84 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-08DOI: 10.1016/j.matt.2024.10.014
Yan Li, Steve Cranford
Section snippets
Main text
Through a variety of social media posts—and even a recent Nature highlight (https://doi.org/10.1038/d41586-024-02511-5)—we were made aware of an upcoming card game entitled “Publish or Perish,” which was recently released (https://get.thepublishorperishgame.com/). In this tongue-in-cheek take on academia, players aim to accumulate the most citations (clearly the current currency of academia), even if it means engaging in a bit of unethical behavior.Go directly to desk rejection! Do not pass go!
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