Matter最新文献

{"title":"Implications of weaving pattern on the material properties of two-dimensional molecularly woven fabrics","authors":"Shiwei Chen ,&nbsp;Zhi-Hui Zhang ,&nbsp;Yuntao Li ,&nbsp;Yijing Chen ,&nbsp;Jinrong Yang ,&nbsp;Xiao He ,&nbsp;Liang Zhang","doi":"10.1016/j.matt.2025.102050","DOIUrl":"10.1016/j.matt.2025.102050","url":null,"abstract":"<div><div>Examining how the weaving process and weaving patterns impact material properties at the molecular level is essential for designing and synthesizing woven and entangled polymers with enhanced physical and mechanical performance. Theoretical analysis of three distinct woven fabrics—plain, mix, and basket, all featuring the same molecular strands—reveals that weaving architectures play a pivotal role in shaping the dynamics, stability, and mesh structure of the weave. Additionally, the patterns influence the pathway of energy dissipation against external forces, directly affecting the mechanical behavior of the materials. The effects stemming from weaving patterns can be attributed to the total number and density of entanglements and the interstrand non-covalent interactions, which physically restrict strand movement. This study not only establishes a clear mechanism between weaving architectures and material characteristics but also presents a theoretical model capable of illustrating the implications of other weave factors, such as strand rigidity and weave defects.</div></div>","PeriodicalId":388,"journal":{"name":"Matter","volume":"8 6","pages":"Article 102050"},"PeriodicalIF":17.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143635765","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}

{"title":"Approaching highly stable optoelectronic device operation at elevated temperature by locking backbone torsion of conjugated polymers","authors":"Zhiqiang Cao, Zhaofan Li, Angela Awada, Sara A. Tolba, Madison Mooney, Yangyang Wang, Yu-Cheng Chiu, Simon Rondeau-Gagné, Wenjie Xia, Xiaodan Gu","doi":"10.1016/j.matt.2025.102195","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102195","url":null,"abstract":"The ability of organic electronics to maintain stability at elevated temperatures is crucial for the longevity of optoelectronic devices. However, achieving stable optoelectronic properties for conjugated polymers remains fundamentally challenging. Here, we identify backbone twisting motion as the primary reason for the unstable optoelectronic properties of donor-acceptor (D-A) conjugated polymers, using diketopyrrolopyrrole (DPP)-based polymers as a model system. The backbone thiophene-ring twist transition is responsible for shifts in the band gap and alterations in charge transport properties. The twisting motion of the thiophene induces localization of the intrachain electrons, resulting in reduced charge carrier mobility and a significant blue shift in optical absorption. Additionally, we demonstrated that intramolecular hydrogen bonding interaction within DPP polymers can suppress undesired backbone twisting at elevated temperatures, thereby ensuring a more stable optoelectronic property. Our work offers fundamental insights into the decline in device stability at elevated temperatures and a strategy to enhance device stability.","PeriodicalId":388,"journal":{"name":"Matter","volume":"8 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202361","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}

{"title":"Ultratough and ultrastiff elastomers formed by inorganic ionic molecular linkers","authors":"Yanhua Sang, Weifeng Fang, Kangren Kong, Haihua Pan, Yintian Guo, Xinyu He, Xin Yu, Shaofei Song, Ruikang Tang, Zhaoming Liu","doi":"10.1016/j.matt.2025.102193","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102193","url":null,"abstract":"Producing both stiff and tough elastomers is crucial in engineering fields. Although diverse cross-linking strategies have been developed to toughen polymers, the co-enhancement of stiffness and toughness is still a contradiction. Here, we developed inorganic ionic molecular linkers (IMLs) by using stable calcium phosphate oligomer as an example for the bottom-up synthesis of butyl acrylate-acrylic acid-based elastomers; these elastomers showed ultrahigh stiffness and toughness compared to elastomers by other cross-linkers. The molecular-size effect of inorganic ionic molecular linkers allows them to connect multiple polymer chains to enhance stiffness, while simultaneously enabling dynamic interchain cross-linking during deformation to achieve high toughness. Furthermore, these inorganic ionic molecular linkers were readily applicable in other commercial elastomers for their co-enhancement of both stiffness and toughness. This strategy produced an alternative molecular cross-linker by interdisciplinary understanding of inorganic and polymer chemistry, pushing forward both theory and technology for the manufacture of high-performance elastomers.","PeriodicalId":388,"journal":{"name":"Matter","volume":"1 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192699","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}

{"title":"Hydrogen bonding networks for tunable organic neuromorphic transistor arrays and in-sensor computing","authors":"Tiantian Zhou, Feifan Zhang, Jiandong Gao, Kaiming Nie, Gen Li, Wanxin Huang, Ruiheng Wang, Guofeng Tian, Haifeng Ling, Hongzhen Lin, Yan Zhao, Hui Yang, Jiangtao Xu, Deyang Ji, Wenping Hu","doi":"10.1016/j.matt.2025.102192","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102192","url":null,"abstract":"Inspired by neural architectures, synaptic transistors incorporating sensing, memory, and computing functionalities within one device have garnered widespread attention. However, achieving high carrier mobility and enduring synaptic plasticity remains challenging due to the unbalanced charge trapping effect at the dielectric/semiconductor interface. Here, introducing the hydrogen bonding networks, constructed via double dielectric materials, significantly improves the interface characteristics. This approach could modulate the carrier mobility of fabricated synaptic transistors from 0.49 to 22 cm² V⁻¹ s⁻¹ and increase synaptic plasticity from 67 to 10,000 s with an ultra-low energy consumption of 24 aJ per synaptic event. Moreover, we have devised an innovative linear self-attention-based spatial and channel joint attention (LSSCA) network architecture for spiking neural networks (SNNs) that exploits synaptic transistors to enhance image classification accuracy from 76% to 99%. This study provides a direct and effective strategy for engineering optically controlled synaptic transistors that demonstrate superior carrier mobility and prolonged plasticity, promising potential in low-energy, high-precision neuromorphic applications.","PeriodicalId":388,"journal":{"name":"Matter","volume":"161 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192698","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}

{"title":"Quantum confinement effects in the topological Dirac semimetal α-Sn on InSb(111)","authors":"Chiara Massetti, Carolina Crosta, Florian Le Mardelé, Ivan Mohelský, Christian Martella, Alessandro Molle, Milan Orlita, Carlo Grazianetti, Fabio Pezzoli","doi":"10.1016/j.matt.2025.102194","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102194","url":null,"abstract":"The diamond-like allotrope of Sn (α-Sn) is tantalizing, being an elemental semimetal that hosts a range of topological properties. Despite the intriguing potential of this quantum material, a detailed understanding of its nontrivial electronic structure remains relatively poor. Here, we prepared α-Sn in a well-defined quantum phase (i.e., topological Dirac semimetal) by applying a compressive strain via epitaxial growth on the (111) surface of an InSb substrate. We varied the thickness of the α-Sn epilayer to single out the emergence of quantum confinement effects. Our electrical investigation suggests a thickness-dependent modification of transport mechanisms. These results are complemented by the measurement of the cyclotron resonance, which manifests the role of quantum confinement in defining the effective mass of topological Dirac fermions as bulk carriers. Our results contribute to deepening the knowledge of the α-Sn electronic properties. This is pivotal to increase the future applicability of Sn-based architectures into beyond-state-of-the-art devices.","PeriodicalId":388,"journal":{"name":"Matter","volume":"2 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177302","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}

{"title":"Leveraging giant magnetoelasticity in soft matter for acoustic energy harvesting","authors":"Junyi Yin, Shaolei Wang, Jing Xu, Xun Zhao, Guorui Chen, Xiao Xiao, Jun Chen","doi":"10.1016/j.matt.2025.102156","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102156","url":null,"abstract":"To address the challenge of recycling energy from low-density acoustic waves found in everyday sounds such as speech and music, we developed a soft acoustic energy harvester based on the giant magnetoelastic effect. This harvester efficiently captures energy from various environmental sound sources. It operates by combining the giant magnetoelastic effect with a spray-coating and magnetic pre-orientation process, enabling it to convert multi-directional acoustic waves into electrical energy across a wide frequency range (0–900 Hz). The magnetoelastic generator achieves a short-circuit current density of 98 μA cm⁻² at a low internal impedance of 300 Ω, representing a significant improvement in current output that achieves a 100-fold increase compared to existing counterparts for acoustic energy harvesting. With inherent waterproofness and dustproofness, it can function effectively in humid or dusty conditions without extra encapsulation. The acoustic energy harvester demonstrates excellent scalability, making it suitable for diverse applications in sustainable energy systems.","PeriodicalId":388,"journal":{"name":"Matter","volume":"18 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153838","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}

{"title":"The phase transition in copper pyrophosphate, Cu2P2O7: Insights and implications for the interpretation of negative thermal expansion","authors":"Martin T. Dove, Naike Shi","doi":"10.1016/j.matt.2025.102149","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102149","url":null,"abstract":"The origin of negative thermal expansion (NTE) in &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;msub is=\"true\"&gt;&lt;mtext is=\"true\"&gt;Cu&lt;/mtext&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;P&lt;/mi&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;O&lt;/mi&gt;&lt;mn is=\"true\"&gt;7&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"2.432ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -796.9 4100.7 1047.3\" width=\"9.524ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMAIN-43\"&gt;&lt;/use&gt;&lt;use x=\"722\" xlink:href=\"#MJMAIN-75\" y=\"0\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(1279,-150)\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-32\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(1732,0)\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMAIN-50\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(681,-150)\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-32\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(2868,0)\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMAIN-4F\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(778,-150)\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-37\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;msub is=\"true\"&gt;&lt;mtext is=\"true\"&gt;Cu&lt;/mtext&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;P&lt;/mi&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;O&lt;/mi&gt;&lt;mn is=\"true\"&gt;7&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;msub is=\"true\"&gt;&lt;mtext is=\"true\"&gt;Cu&lt;/mtext&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;P&lt;/mi&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;O&lt;/mi&gt;&lt;mn is=\"true\"&gt;7&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt; has been examined using diffraction data at ambient and raised pressure. From an analysis of spontaneous strains and order parameters associated with the structural phase transition, we show that the NTE can be explained wholly on the basis of the structural distortions that accompany the phase transition. We demonstrate that the NTE diverges at the phase transition, because the phase transition shows tricritical behavior. The unusual aspect of the phase transition is that it gives rise to an &lt;em&gt;expansion&lt;/em&gt; on cooling, whereas normally, a structural phase transition leads to an overall volume &lt;em&gt;reduction&lt;/em&gt;. This behavior, which we identify as a uniaxial spontaneous strain, can be understood in terms ","PeriodicalId":388,"journal":{"name":"Matter","volume":"98 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153840","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}

{"title":"Multiresonance-donor-multiresonance emitter for efficient narrowband blue OLEDs","authors":"Yi-Hui He, Jun-Yu Liu, Zhen Zhang, Guo-Wei Chen, Yan-Chun Wang, Guo Yuan, Feng-Ming Xie, Jian-Xin Tang, Yan-Qing Li","doi":"10.1016/j.matt.2025.102188","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102188","url":null,"abstract":"Solution processing has emerged as an up-and-coming technique for the scalable manufacture of organic light-emitting diodes (OLEDs) owing to the material savings and compatibility with large-area manufacturing. Nonetheless, the development of solution-processable pure-blue emitters that exhibit optimal color purity and electroluminescent efficiency presents a significant challenge in pursuing high-performance solution-processed devices. Here, we demonstrate a molecular configuration strategy to create solution-processable multiresonance thermally activated delayed fluorescence (MR-TADF) emitters. The methodology encompasses the construction of a “multiresonance-donor-multiresonance (MR-D-MR)” framework that features hybrid short/long-range charge transfer excitation characteristics. The proof-of-concept emitter demonstrates considerable rigidity and reduced vibronic progression, resulting in pure-blue narrowband emission at 474 nm. Furthermore, it possesses a large oscillator strength and significant spin-orbit couplings, facilitating rapid exciton dynamics. These advantageous properties enable the emitter to achieve a record-high electroluminescent efficiency of 35.1% for sensitizer-free solution-processed OLEDs. The outstanding electroluminescent outcomes underscore the efficacy of our molecular construction strategy.","PeriodicalId":388,"journal":{"name":"Matter","volume":"10 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145976","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}

{"title":"The staggered-layer induced elasticity strengthening mechanism in flexible Bi2Te3","authors":"Xiege Huang, Luoqi Wu, Mingyuan Hu, Xiaobin Feng, Pengcheng Zhai, Wenjuan Li, Bo Duan, Jiaqing He, Guodong Li, Qingjie Zhang, William A. Goddard","doi":"10.1016/j.matt.2025.102166","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102166","url":null,"abstract":"Wearable flexible devices require the development of thermoelectric (TE) materials with high strength, excellent elastic bendability, and superior ductility. Here we report a staggered-layer strategy that overcomes the strength-flexibility dilemma. Our findings indicate that the newly formed strong Bi–Bi covalent bond between the staggered layer leads to an average 40% increase in the bond energy of the van der Waals Te–Te bond. A large Poisson’s ratio leads to a high maximum linear elastic strain (<span><span style=\"\"></span><span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;msubsup is=\"true\"&gt;&lt;mi is=\"true\"&gt;&amp;#x3B5;&lt;/mi&gt;&lt;mi is=\"true\"&gt;E&lt;/mi&gt;&lt;mi mathvariant=\"italic\" is=\"true\"&gt;max&lt;/mi&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.663ex\" role=\"img\" style=\"vertical-align: -0.928ex;\" viewbox=\"0 -747.2 1966.9 1146.6\" width=\"4.568ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"><g is=\"true\"><g is=\"true\"><use xlink:href=\"#MJMATHI-3B5\"></use></g><g is=\"true\" transform=\"translate(466,352)\"><use transform=\"scale(0.707)\" xlink:href=\"#MJMATHI-6D\"></use><use transform=\"scale(0.707)\" x=\"878\" xlink:href=\"#MJMATHI-61\" y=\"0\"></use><use transform=\"scale(0.707)\" x=\"1408\" xlink:href=\"#MJMATHI-78\" y=\"0\"></use></g><g is=\"true\" transform=\"translate(466,-318)\"><use transform=\"scale(0.707)\" xlink:href=\"#MJMATHI-45\"></use></g></g></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><msubsup is=\"true\"><mi is=\"true\">ε</mi><mi is=\"true\">E</mi><mi is=\"true\" mathvariant=\"italic\">max</mi></msubsup></mrow></math></span></span><script type=\"math/mml\"><math><mrow is=\"true\"><msubsup is=\"true\"><mi is=\"true\">ε</mi><mi is=\"true\">E</mi><mi mathvariant=\"italic\" is=\"true\">max</mi></msubsup></mrow></math></script></span>), enhancing shear strength by 83.3%, which is consistent with a 92.2% increase in micro-pillar compressive strength. The narrow stiffness gap and bond energy gap facilitate the coordinated deformation that maintains sustained linear elasticity during compression. Moreover, the low BFCs of the Te–Te and Te–Bi bonds (0.72 eV/Ų and 3.85 eV/Ų) contribute to the experimentally observed bending flexibility. This staggered-layer-induced elasticity strengthening mechanism offers a promising strategy for the rational design of highly reliable wearable TE devices.","PeriodicalId":388,"journal":{"name":"Matter","volume":"1 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104161","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}

{"title":"Ultra-strong skin-core polymer aerogel fibers via wet-freeze spinning","authors":"Tiantian Xue, Jingyuan Tang, Chang Liu, Longsheng Zhang, Chao Zhang, Wei Fan, T.X. Liu","doi":"10.1016/j.matt.2025.102155","DOIUrl":"https://doi.org/10.1016/j.matt.2025.102155","url":null,"abstract":"Aerogel fibers, as synthetic fibers with a three-dimensional (3D) porous structure, outperform traditional fibers in thermal management. However, they still face the challenge of balancing mechanical properties and thermal insulation to fully realize their potential. Here, we report a wet-freeze spinning technique for the continuous, large-scale preparation of dense skin-porous core-structured polyimide aerogel fibers. The unique multiscale structural design, which includes a highly oriented dense skin layer to withstand load stresses and a porous core to impede heat transfer, achieves exceptionally high strength and low thermal conductivity. The resulting robust skin-core polyimide (SCPI) aerogel fibers exhibit ultrahigh specific strength up to 775.8 MPa cm³ g⁻¹, much higher than previously reported aerogel fibers. Moreover, the obtained aerogel fabrics demonstrate excellent thermal insulation properties (30.4 mW m⁻¹ K⁻¹) under long-term thermal shock. This strategy offers a universal and continuous way to prepare high-strength aerogel fibers and is crucial for promoting the fiber industry.","PeriodicalId":388,"journal":{"name":"Matter","volume":"54 1","pages":""},"PeriodicalIF":18.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088008","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}