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Formative manufacturing of heterogeneous composite plates: a review 异质复合板成型制造技术综述
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-12 DOI: 10.1016/j.mattod.2025.04.002
Jia Yang Zhang , Feng Li , Wen Tao Niu , Zi Yi Wang , Mu Zi Cao
{"title":"Formative manufacturing of heterogeneous composite plates: a review","authors":"Jia Yang Zhang ,&nbsp;Feng Li ,&nbsp;Wen Tao Niu ,&nbsp;Zi Yi Wang ,&nbsp;Mu Zi Cao","doi":"10.1016/j.mattod.2025.04.002","DOIUrl":"10.1016/j.mattod.2025.04.002","url":null,"abstract":"<div><div>The integration of superior characteristics from individual components achievable in heterogeneous composite plates can be achieved through optimal material configuration and combination methods. This approach results in significant enhancements in physical, mechanical, and forming properties when compared to traditional single metal plates. However, challenges such as prolonged manufacturing cycles and the complexity of coordinating interface characteristics and microstructural properties impede the rapid advancement and widespread adoption of heterogeneous composite plate manufacturing. This study offers a comprehensive overview of the primary forming methods for heterogeneous composite plates, including rolling, extrusion, welding, hot pressing, and additive manufacturing. It addresses current challenges and anticipates potential developmental directions, such as the application of specialized energy field-assisted forming techniques and the design of heterogeneous microstructures. The exploration of new resources, the expansion of innovative concepts, the establishment of novel models, the promotion of new principles, and the adoption of transformative technologies are essential for the breakthrough development of heterogeneous composite plate manufacturing. Aligning with the national innovation-driven development strategy and the requirements of major national projects remains a fundamental objective of this research direction.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 548-574"},"PeriodicalIF":21.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070867","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}
引用次数: 0
Piezoelectric-driven self-charging energy storage systems: From fundamental materials to emerging applications 压电驱动自充电储能系统:从基础材料到新兴应用
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-12 DOI: 10.1016/j.mattod.2025.03.027
Yueming Lin, Dan Mou, Xingrui Pu, Bo Li, Laiming Jiang, Xiaohong Zhu
{"title":"Piezoelectric-driven self-charging energy storage systems: From fundamental materials to emerging applications","authors":"Yueming Lin,&nbsp;Dan Mou,&nbsp;Xingrui Pu,&nbsp;Bo Li,&nbsp;Laiming Jiang,&nbsp;Xiaohong Zhu","doi":"10.1016/j.mattod.2025.03.027","DOIUrl":"10.1016/j.mattod.2025.03.027","url":null,"abstract":"<div><div>With the widespread deployment of fifth-generation mobile communication technologies and cutting-edge microchips, the development of new electronics is undergoing significant transformation, particularly with the emergence of wearable and implantable devices. To address power supply challenges, such devices require adaptable energy systems that can meet their performance demands. Piezoelectric-driven self-charging energy storage systems (PS-ESS) are an emerging integrated energy technology that combines energy conversion and energy storage in a single unit eliminating the need for external charging circuits. As a result, they have garnered considerable attention. PS-ESS can harvest and store mechanical energy from various sources, including, but not limited to, activities like finger tapping, walking, and joint bending, making them promising candidates for powering smart devices. Despite rapid advancements in PS-ESS, a comprehensive review covering the theoretical challenges, engineering obstacles related to materials and device construction, and potential applications is still lacking. In this review, we summarize recent progress in PS-ESS, with a focus on self-charging mechanisms, piezo-component fabrication strategies, and emerging applications in wearable and implantable health-monitoring electronics. Finally, we discuss the challenges that must be addressed to advance PS-ESS technology, as well as future perspectives.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 414-451"},"PeriodicalIF":21.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070869","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}
引用次数: 0
How amorphous CoOx(OH)y-Pd nanocomposite endows high performance and durability in methanol oxidation reaction 无定形CoOx(OH)y-Pd纳米复合材料如何在甲醇氧化反应中赋予高性能和耐久性
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-12 DOI: 10.1016/j.mattod.2025.03.032
Zhao Yang , Tianqi Guo , Qi Hu , Juzhe Liu , Xiangyu Chen , Yu Wang , Li-Min Liu , Zhongchang Wang , Lin Guo
{"title":"How amorphous CoOx(OH)y-Pd nanocomposite endows high performance and durability in methanol oxidation reaction","authors":"Zhao Yang ,&nbsp;Tianqi Guo ,&nbsp;Qi Hu ,&nbsp;Juzhe Liu ,&nbsp;Xiangyu Chen ,&nbsp;Yu Wang ,&nbsp;Li-Min Liu ,&nbsp;Zhongchang Wang ,&nbsp;Lin Guo","doi":"10.1016/j.mattod.2025.03.032","DOIUrl":"10.1016/j.mattod.2025.03.032","url":null,"abstract":"<div><div>One key issue in designing electrocatalysts for methanol oxidation reaction (MOR) is to improve their durability because the dissociative adsorption of methanol molecule could produce CO-like intermediate to poison catalysts. Here, we propose a wet chemical route to anchor Pd nanoparticles on amorphous CoO<sub>x</sub>(OH)<sub>y</sub> nanoplates and show that such amorphous support prefers to bind OH from electrolyte during electrochemical reaction to increase surface OH coverage, helping remove the poisonous intermediates and recover active sites. Besides, the oxygen vacancies in the amorphous CoO<sub>x</sub>(OH)<sub>y</sub> enable to produce excess electrons that are transferred to Pd to facilitate rate-determining step of MOR. Furthermore, we have verified the synergistic effect between Pd species and the amorphous CoO<sub>x</sub>(OH)<sub>y</sub> nanoplate would generate more reactive oxygen species than the individual component catalyst to further enhance MOR activity. Consequently, the amorphous CoO<sub>x</sub>(OH)<sub>y</sub>-Pd nanocomposites deliver more excellent electrocatalytic performance of ∼7100 mA mg<sub>Pd</sub><sup>−1</sup> and higher stability by retaining 86 % activity after 400 electrochemical cycles than Pd-loaded crystalline Co(OH)<sub>2</sub> nanoplates. Notably, the leaching out of Pd component was overcome in our study, this catalyst can even work for more than 100 h without obvious activity loss. Such a strategy by integrating noble metal component with amorphous support shall open up a new avenue in smart design of MOR nanocatalysts with simplified synthesis routes and high activity yet low cost.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 255-266"},"PeriodicalIF":21.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071406","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}
引用次数: 0
Biofabrication of engineered tissues by 3D bioprinting of tissue specific high cell-density bioinks 组织特异性高细胞密度生物墨水的3D生物打印工程组织的生物制造
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-10 DOI: 10.1016/j.mattod.2025.03.021
Oju Jeon , Hyoeun Park , J. Kent Leach , Eben Alsberg
{"title":"Biofabrication of engineered tissues by 3D bioprinting of tissue specific high cell-density bioinks","authors":"Oju Jeon ,&nbsp;Hyoeun Park ,&nbsp;J. Kent Leach ,&nbsp;Eben Alsberg","doi":"10.1016/j.mattod.2025.03.021","DOIUrl":"10.1016/j.mattod.2025.03.021","url":null,"abstract":"<div><div>Bioprinting of high cell-density bioinks is a promising technique for cellular condensation-based tissue engineering and regeneration medicine. However, it is still difficult to create precisely controlled complex structures and organization of tissues with high cell-density bioink-based bioprinting for tissue specific condensation. In this study, we present newly biofabricated tissues from directly assembled, tissue specific, high cell-density bioinks which have been three-dimensionally printed into a photocrosslinkable and biodegradable hydrogel microparticle supporting bath. Three types of tissue specific high cell-density bioinks have been prepared with individual stem cells or stem cell aggregates by incorporation of growth factor-loaded gelatin microparticles. The bioprinted tissue specific high cell-density bioinks in the photocrosslinked microgel supporting bath condense together and differentiate down tissue-specific lineages to form multi-phase tissues (e.g., osteochondral tissues). By changing the growth factors and cell types, these tissue specific high cell-density bioinks enable engineering of various functional tissues with controlled architecture and organization of cells.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 172-182"},"PeriodicalIF":21.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071251","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}
引用次数: 0
Bioinks with varying densities of physical and chemical crosslinks modulate cellular responses in 3D by altering the viscoelasticity of the cell microenvironment 具有不同密度的物理和化学交联的生物墨水通过改变细胞微环境的粘弹性来调节三维细胞反应
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-10 DOI: 10.1016/j.mattod.2025.03.019
Luís B. Bebiano , Rafaela Presa , Luís Fernandes , Bianca N. Lourenço , Ovijit Chaudhuri , Rúben F. Pereira
{"title":"Bioinks with varying densities of physical and chemical crosslinks modulate cellular responses in 3D by altering the viscoelasticity of the cell microenvironment","authors":"Luís B. Bebiano ,&nbsp;Rafaela Presa ,&nbsp;Luís Fernandes ,&nbsp;Bianca N. Lourenço ,&nbsp;Ovijit Chaudhuri ,&nbsp;Rúben F. Pereira","doi":"10.1016/j.mattod.2025.03.019","DOIUrl":"10.1016/j.mattod.2025.03.019","url":null,"abstract":"<div><div>The biological function and clinical translation of bioprinted cell-laden constructs largely depend on the bioink printability and biomechanical cues presented to embedded cells. Despite multiple biomaterials and crosslinking reactions have been explored for bioink design, how the type and density of crosslinks used in bioink development determine the relationship between bioink printability and viscoelasticity, and how in turn the resulting alterations in viscoelasticity regulate cell behavior within 3D bioprinted constructs remain largely unknown. Here, we developed double crosslinked bioinks with controllable printability and time-dependent mechanical properties by varying the density of reversible (ionic) to static (thioether) crosslinks in the gel network. We utilized these bioinks to investigate how the altered density of physical and chemical crosslinks affects the viscoelasticity of bioprinted cell constructs and how they regulate fundamental cellular responses in 3D. From our results, it was evident that increased density of reversible bonds in bioprinted constructs significantly promotes not only rapid cell spreading, but also the formation of interconnected cellular networks by enhancing matrix viscoelasticity and stress relaxation. By co-printing bioinks whose viscoelasticity can be adjusted independently from its cell-adhesiveness by varying the degree of covalent crosslinking via photoclick thiol-ene reaction, we showed that cell spreading and morphology are spatially regulated in step-gradient hydrogels by the viscoelasticity of their surrounding environment. Our findings reveal that bioinks with similar printability elicit distinct cell responses in bioprinted 3D constructs via altered matrix viscoelasticity, which is determined by the type and density of crosslinks employed for bioink crosslinking. Taken together, these results underscore matrix viscoelasticity as a key parameter in the rational design of mechano-instructive bioinks for bioprinting applications in tissue repair and in vitro tissue modelling.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 146-161"},"PeriodicalIF":21.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071250","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}
引用次数: 0
High voltage stable LiCoO2 enabled by surface strengthening and bulk doping 通过表面强化和体掺杂实现高电压稳定LiCoO2
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-10 DOI: 10.1016/j.mattod.2025.03.029
Si-Dong Zhang , Jun Wang , Nicholas S. Grundish , Yongxin Cheng , Mu-Yao Qi , Sijie Guo , Yutao Li , An-Min Cao
{"title":"High voltage stable LiCoO2 enabled by surface strengthening and bulk doping","authors":"Si-Dong Zhang ,&nbsp;Jun Wang ,&nbsp;Nicholas S. Grundish ,&nbsp;Yongxin Cheng ,&nbsp;Mu-Yao Qi ,&nbsp;Sijie Guo ,&nbsp;Yutao Li ,&nbsp;An-Min Cao","doi":"10.1016/j.mattod.2025.03.029","DOIUrl":"10.1016/j.mattod.2025.03.029","url":null,"abstract":"<div><div>Enhancing the operating voltage of LiCoO<sub>2</sub> (LCO) beyond 4.45 V significantly enhances the energy density of rechargeable Li-ion batteries; however, it also intensifies interfacial reactions, induces phase transitions, and promotes surface oxygen loss, leading to fast capacity decay. Here, we present a robust strategy to achieve stable cycling of LCO cathode above 4.6 V by integrating surface and bulk modifications through a wet chemical approach, which forms a conformal Ni<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> nanoshell around LCO particles; the subsequent heat treatment induces Ni<sup>2+</sup> doping into the bulk and PO<sub>4</sub><sup>3-</sup> modification on the surface, resulting in a thin rock-salt-like phase and a protective Li<sub>3</sub>PO<sub>4</sub> layer. These modifications mitigate irreversible phase transitions and parasitic reactions, resulting in significantly improved stability; the modified LCO demonstrates 98.2 % capacity retention at 4.6 V (88.1 % at 4.7 V) after 100 cycles at 1C in half-cells and achieves 80 % retention over 346 cycles in 4.6 V LCO/graphite full cell. This work highlights the critical role of integrated lattice and surface engineering in advancing layered oxide cathodes and provides valuable insights for developing high-energy–density Li-ion batteries.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 238-246"},"PeriodicalIF":21.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070598","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}
引用次数: 0
Interfacial polymerization of dopamine with diamines for ultrastable Janus nanofiltration membranes and adhesives 超稳定Janus纳滤膜和粘合剂中多巴胺与二胺的界面聚合
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-05 DOI: 10.1016/j.mattod.2025.03.015
Viktor Toth , Rifan Hardian , Hakkim Vovusha , Cong Yang , Gyorgy Szekely
{"title":"Interfacial polymerization of dopamine with diamines for ultrastable Janus nanofiltration membranes and adhesives","authors":"Viktor Toth ,&nbsp;Rifan Hardian ,&nbsp;Hakkim Vovusha ,&nbsp;Cong Yang ,&nbsp;Gyorgy Szekely","doi":"10.1016/j.mattod.2025.03.015","DOIUrl":"10.1016/j.mattod.2025.03.015","url":null,"abstract":"<div><div>The polymerization of dopamine can yield nature-inspired materials for diverse applications. Polydopamine (PDA) is used for modifying hydrophilic surfaces via deposition techniques; however, it lacks film-formation ability. In this study, we demonstrate the interfacial polymerization of dopamine with diamines via aza-Michael addition, which results in the formation of films possessing thicknesses in the range of nano- to micrometers with Janus properties for the latter. Experimental and in silico mechanistic investigations were conducted to determine the effects of the diamine chain length, monomer concentration, heteroatom, and solvent medium on film formation. The nanofilms exhibited exceptional stability in harsh organic solvents, ionic liquids, and strong acids. A 5-nm thick nanofilm composed of PDA and biomass-derived priamine exhibited controllable nanofiltration performance, demonstrating a high <em>N</em>,<em>N</em>-dimethylformamide solvent permeance of 26 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup> and molecular weight cutoff of 540–704 g mol<sup>−1</sup>. Furthermore, the membrane was successfully applied in high-temperature nanofiltration. Additionally, the nanofilms demonstrated single- and double-sided adhesion on diverse surfaces, including wood and glass surfaces, which possess different wettability and roughness characteristics. This study provides a comprehensive understanding of the structure–property relationship, polymerization mechanism, membrane separation, and adhesive applications of PDA–diamine freestanding films.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 104-114"},"PeriodicalIF":21.1,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070571","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}
引用次数: 0
Mo-terminated edges in two-dimensional molybdenum disulfide for site-specific hydrolysis and DNA cleavage 二维二硫化钼的钼端端边缘用于位点特异性水解和DNA切割
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-05 DOI: 10.1016/j.mattod.2025.03.020
Cong Wang , Menghan Wu , Muqing Li , Yingcan Zhao , Mingchuang Zhao , Yunhao Zhang , Yichao Bai , Jianxiang Gao , Xiaoxia Wang , Xilin Tian , Han Zhang , Liang Chang , Xiaolong Zou , Bilu Liu , Feiyu Kang , Mauricio Terrones , Yu Lei
{"title":"Mo-terminated edges in two-dimensional molybdenum disulfide for site-specific hydrolysis and DNA cleavage","authors":"Cong Wang ,&nbsp;Menghan Wu ,&nbsp;Muqing Li ,&nbsp;Yingcan Zhao ,&nbsp;Mingchuang Zhao ,&nbsp;Yunhao Zhang ,&nbsp;Yichao Bai ,&nbsp;Jianxiang Gao ,&nbsp;Xiaoxia Wang ,&nbsp;Xilin Tian ,&nbsp;Han Zhang ,&nbsp;Liang Chang ,&nbsp;Xiaolong Zou ,&nbsp;Bilu Liu ,&nbsp;Feiyu Kang ,&nbsp;Mauricio Terrones ,&nbsp;Yu Lei","doi":"10.1016/j.mattod.2025.03.020","DOIUrl":"10.1016/j.mattod.2025.03.020","url":null,"abstract":"<div><div>The hydrolysis of DNA serves as the foundational principle for gene engineering that enable precise gene cleavage at the molecular level. This process typically occurs in biological nucleases, which exhibit nucleobase-selective and catalytic hydrolysis capabilities rarely replicated in abiotic nanomaterials. Here, we demonstrate that molybdenum-terminated (Mo-terminated) edges of molybdenum disulfide (MoS<sub>2</sub>) possess the unique ability to abstract a proton (H<sup>+</sup>) from water molecules, thereby facilitating catalytic hydrolysis reactions that cleave the phosphodiester bonds in DNA through the action of hydroxide ions. The enhanced proton absorption at Mo-terminated edges of MoS<sub>2</sub> significantly reduces the activation energy required for the DNA hydrolysis reaction. Furthermore, the favorable interaction between the Mo-terminated edges and thymine nucleobases promotes both charge transfer and P-O bond cleavage, enabling targeted DNA hydrolysis at 'TTTTTTT' sequences under dark conditions. This discovery underscores the potential of MoS<sub>2</sub> as a stable, efficient nanosystem for precise genetic editing, heralding advanced applications in the field of gene engineering.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 162-171"},"PeriodicalIF":21.1,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071405","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}
引用次数: 0
Semiconductor-compatible topological digital alloys 半导体兼容拓扑数字合金
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-04 DOI: 10.1016/j.mattod.2025.03.017
Yunfan Liang , Damien West , Shunda Chen , Jifeng Liu , Tianshu Li , Shengbai Zhang
{"title":"Semiconductor-compatible topological digital alloys","authors":"Yunfan Liang ,&nbsp;Damien West ,&nbsp;Shunda Chen ,&nbsp;Jifeng Liu ,&nbsp;Tianshu Li ,&nbsp;Shengbai Zhang","doi":"10.1016/j.mattod.2025.03.017","DOIUrl":"10.1016/j.mattod.2025.03.017","url":null,"abstract":"<div><div>Recently, GeSn alloys have attracted much interest for direct-gap infrared photonics and as potential topological materials which are compatible with the semiconductor industry. However, for photonics, the high-Sn content required leads to low detectivity, associated with poor material quality, and the (&gt;35 %) Sn required for topological properties have been out of reach experimentally. Here, we demonstrate that by patterning the Sn distribution within Ge, the electronic properties have a far greater tunability than is possible with the random alloy. For the GeSn <span><math><mrow><mi>δ</mi></mrow></math></span>-digital alloy (DA) formed by confining Sn atoms in atomic layer(s) along the [111] direction of Ge, we show that ∼ 10 % Sn can lead to a triple-point semimetal. These findings are understood in terms of Sn ordering causing spatial separation of Sn and Ge band edges, leading to band inversion. This mechanism can also lead to a weak topological insulator, Weyl semimetal, and enables tunable direct bandgaps down to 2 meV, covering the entire infrared range. This DA induced topological properties are also identified in compound semiconductors, such as InAs<sub>1-x</sub>Sb<sub>x</sub>, showing the general applicability of the DA design for realizing topological properties on conventional semiconductor platforms. Our findings not only point to a new class of currently unexplored topological systems accessible by epitaxy, but also establish the promise of low-Sn GeSn DAs for application as infrared laser diodes and photodetectors in Si photonic integrated circuits and infrared image sensors.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 115-125"},"PeriodicalIF":21.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071403","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}
引用次数: 0
Engineered radiation-sensitive probiotic for synergistic tumor cell cycle blockade and immunomodulation to potentiate radio-immunotherapy in pancreatic cancer 用于协同肿瘤细胞周期阻断和免疫调节的工程辐射敏感益生菌增强胰腺癌的放射免疫治疗
IF 21.1 1区 材料科学
Materials Today Pub Date : 2025-04-03 DOI: 10.1016/j.mattod.2025.03.018
Wei-Qin Yao , Shi-Man Zhang , Xu-Qi Hu, Li He, Ran Meng, Yan-Tong Lin, Wei-Hai Chen, Xian-Zheng Zhang
{"title":"Engineered radiation-sensitive probiotic for synergistic tumor cell cycle blockade and immunomodulation to potentiate radio-immunotherapy in pancreatic cancer","authors":"Wei-Qin Yao ,&nbsp;Shi-Man Zhang ,&nbsp;Xu-Qi Hu,&nbsp;Li He,&nbsp;Ran Meng,&nbsp;Yan-Tong Lin,&nbsp;Wei-Hai Chen,&nbsp;Xian-Zheng Zhang","doi":"10.1016/j.mattod.2025.03.018","DOIUrl":"10.1016/j.mattod.2025.03.018","url":null,"abstract":"<div><div>In this study, an engineered probiotic (denoted as CBB) was rationally designed for enhanced radio-immunotherapy through tumor cell cycle blockade and radiation sensitization. The anaerobic <em>Clostridium butyricum</em> (CB) was surface modified with bismuth nanoparticles-coordinated black phosphorus nanosheets (BPs-Bi) through MMP-2 sensitive peptide to prepare the engineered probiotic CBB. Due to the hypoxia tropism of CB, CBB could actively target and penetrate into deep pancreatic tumors, in favor of the enhanced tumor accumulation and distribution of BPs-Bi. Within tumor, BPs-Bi trapped tumor cells in radio-sensitive G2/M phase by regulating CDK1 and PCNA, while its high conductivity and large specific area helped electron transfer to amplify Bi-mediated radio-toxicity via boosting the generation of ROS to damage tumor cells. Worth noted, radiotherapy induced the release of damage-associated molecular patterns (DAMPs) from tumor cells, and concurrently triggered bacteria death to secrete bacterial antigens, which further provoked robust antitumor immune responses for local control and metastasis remission of malignant pancreatic tumors, highlighting new opportunities for pancreatic cancer radio-immunotherapy.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"86 ","pages":"Pages 126-145"},"PeriodicalIF":21.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071404","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}
引用次数: 0
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