Science China Materials最新文献

{"title":"Ambient-condition synthesis of Cr2AlB2 phase via molten salt shielding for high-performance electromagnetic wave absorption","authors":"Peng Huang \u0000 (,&nbsp;),&nbsp;Zhangjue Wang \u0000 (,&nbsp;),&nbsp;Yuyang He \u0000 (,&nbsp;),&nbsp;Wei Li \u0000 (,&nbsp;),&nbsp;Yongqiang Chen \u0000 (,&nbsp;),&nbsp;Hailong Wang \u0000 (,&nbsp;),&nbsp;Rui Zhang \u0000 (,&nbsp;),&nbsp;Yanqiu Zhu \u0000 (,&nbsp;),&nbsp;Fan Zhang \u0000 (,&nbsp;),&nbsp;Bingbing Fan \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3974-1","DOIUrl":"10.1007/s40843-025-3974-1","url":null,"abstract":"<div><p>MAB-phase derived compounds have good wave-absorbing properties attributable to their unique layered structure and desirable properties. Among them, Cr₂AlB₂ is of great interest due to its good thermal and electrical properties. However, the conventional synthesis method of Cr₂AlB₂ needs to be carried out under inert gas protection to avoid oxidation, which greatly increases the cost and limits its development in the field of wave absorption. To resolve the issue, we have successfully synthesized high-purity Cr₂AlB₂ in air using the molten salt shield synthesis (MS³). It can not only isolate the interference of oxygen, but also reduces the synthesis temperature of Cr₂AlB₂, which is a cost-effective method. Also, Cr₂AlB₂ synthesized using MS³ exhibits excellent wave-absorbing properties. A minimum reflection loss (RL_min) of −42.10 dB at 12.6 GHz and a maximum effective absorption bandwidth (EAB_max) of 3.44 GHz are achieved at a thickness of 1.9 mm. Therefore, this study not only contributes to the large-scale synthesis of Cr₂AlB₂ materials but also offers valuable insights for its potential application in electromagnetic wave absorption.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4872 - 4883"},"PeriodicalIF":7.7,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"4D printable semi-interpenetrating networks with robust tissue adhesion for smart self-deployable vascular closure","authors":"Kun Luo \u0000 (,&nbsp;),&nbsp;Qiang Luo \u0000 (,&nbsp;),&nbsp;Jing Guo \u0000 (,&nbsp;),&nbsp;Zhong-Ming Xia \u0000 (,&nbsp;),&nbsp;Mao Chen \u0000 (,&nbsp;),&nbsp;Li Tang \u0000 (,&nbsp;),&nbsp;Ke-Ke Yang \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4086-4","DOIUrl":"10.1007/s40843-025-4086-4","url":null,"abstract":"<div><p>Interventional therapy has emerged as a transformative alternative to open surgery owing to its minimal invasiveness and fast recovery. However, it still presents risks of iatrogenic injury from vascular access, necessitating prompt and reliable vascular closure. Although various closure systems have been developed, they often suffer from complicated deployment procedures, potential for loosening, and risk of device migration. Herein, we develop a smart self-deployable vascular closure device enabled by a semi-interpenetrating network (sIPN) that synergistically integrates a programmable shape memory effect and robust tissue adhesion. The sIPN was designed by interpenetrating flexible, dopamine-functionalized poly(tetrahydrofuran) (PTD) chains into a photo-cross-linkable poly(ε-caprolactone)-based copolymer (PCC) network. The vascular closure model was fabricated via a UV-assisted fused deposition modeling printing strategy, significantly reducing mechanical anisotropy while facilitating structural customization. The resulting device exhibits autonomous self-deployment at 37 °C, along with reliable tissue adhesion under physiological conditions (maximum shear strength of 150.5 kPa). <i>In vitro</i>, the material demonstrates exceptional hemocompatibility (below 3%) and excellently enhanced cell migration (up to 38.9%). <i>In vivo</i>, immunofluorescence analysis reveals a promotion for CD31 (162.18%) and aSMA (154.93%) compared to the control group. These results highlight the PTD/PCC sIPN as a bioadaptive, multifunctional material platform for intelligent vascular closure, offering great promise for clinical translation in interventional therapies.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4796 - 4807"},"PeriodicalIF":7.7,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Room-temperature sensitive electromechanical magnetization reversal with modulation capability approaching 100%","authors":"Mingliang Cheng \u0000 (,&nbsp;),&nbsp;Jianzhao Wang \u0000 (,&nbsp;),&nbsp;Yiting Mo \u0000 (,&nbsp;),&nbsp;Yijun Huang \u0000 (,&nbsp;),&nbsp;Xinghao Qu \u0000 (,&nbsp;),&nbsp;Senjiang Yu \u0000 (,&nbsp;),&nbsp;Liang Hu \u0000 (,&nbsp;),&nbsp;Xinglong Dong \u0000 (,&nbsp;),&nbsp;Xuefeng Zhang \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4144-y","DOIUrl":"10.1007/s40843-025-4144-y","url":null,"abstract":"<div><p>Developing efficient strategies for electrically manipulating two-dimensional magnetism at room temperature is a key challenge in contemporary spintronics. In this study, we demonstrate giant electromechanical control over the magnetism of the room-temperature van der Waals ferromagnet Fe₃GaTe₂ by integrating it with the ferroelectric α-In₂Se₃. Modest gate voltages lead to an almost complete suppression of the coercive field by 96.5%, corresponding to a remarkable peak modulation sensitivity of ∼8.l mT V⁻¹, which stands out among existing van der Waals magnetoelectric systems. Importantly, this substantial magnetoelectric response is predominantly unaffected by voltage polarity, as both positive and negative gate voltages induce similar magnetic modulation effects. To elucidate the underlying mechanism, we tracked the voltage-induced Raman spectral changes, revealing a peak shift of 1.7 cm⁻¹ that accurately represents an effective in-plane tensile strain of ∼l.42% under an equivalent bias, demonstrating polarity independence as well. The synchronized magnetic response and strain variation unequivocally indicate that the induced tensile strain serves as the fundamental physical driver behind the magnetic modulation. Additionally, density functional theory calculations corroborate that the reduction in magnetic anisotropy induced by tensile strain results in a decrease in the coercive field. Our work establishes a novel and efficient approach for achieving voltage control of magnetism at room temperature in van der Waals multiferroic heterostructures, highlighting their significant potential for applications in ultra-low-power magnetic logic and sensing technologies.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4945 - 4953"},"PeriodicalIF":7.7,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atomic-level chelation engineered Ni-salicylate MOFs with hierarchical nanobelt assemblies for selective glucose electrooxidation","authors":"Min Wang \u0000 (,&nbsp;),&nbsp;Yuan Li \u0000 (,&nbsp;),&nbsp;Sicong Zhang \u0000 (,&nbsp;),&nbsp;Xinyu Qin \u0000 (,&nbsp;),&nbsp;Huan Pang \u0000 (,&nbsp;),&nbsp;Qing Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3987-x","DOIUrl":"10.1007/s40843-025-3987-x","url":null,"abstract":"<div><p>By employing a salicylate coordination strategy to precisely modulate the microenvironment of nickel active sites, a hierarchically porous nickel salicylate (Ni-SA) metal-organic framework (MOF) was constructed for efficient electrocatalytic glucose oxidation. The ortho-hydroxy-carboxylate chelation directs the atomic-level organization of Ni²⁺ sites within nanobelt assemblies, thereby maximizing active site accessibility. Robust Ni–O coordination further stabilized Ni³⁺ intermediates during C–H bond cleavage, leading to remarkable catalytic stability. As a result, the optimized Ni-SA-2 catalyst achieved outstanding sensing performance, with a high sensitivity of 5.97 mA mM⁻¹ cm⁻² and a low detection limit of 0.71 µM (signal-to-noise ratio (S/N) = 3), alongside 85.4% current retention after 8 h continuous operation. Significantly, this design paradigm demonstrates universal applicability as evidenced by successful extension to isostructural M-SA analogs (M = Co, Fe, Cr, Mn) under identical synthetic conditions, ultimately establishing metal-salicylate frameworks as a versatile electrocatalyst platform.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4635 - 4643"},"PeriodicalIF":7.7,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Covalent organic frameworks functionalized with thioether or vinyl groups for efficient and rapid capture of multiple iodine pollutants","authors":"Yumei Luo \u0000 (,&nbsp;),&nbsp;Yuancheng Qin \u0000 (,&nbsp;),&nbsp;Cailing Ni \u0000 (,&nbsp;),&nbsp;Chao Liu \u0000 (,&nbsp;),&nbsp;Hewei Yan \u0000 (,&nbsp;),&nbsp;Renjie Song \u0000 (,&nbsp;),&nbsp;Jianping Zou \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4044-3","DOIUrl":"10.1007/s40843-025-4044-3","url":null,"abstract":"<div><p>Efficient sequestration of radioactive iodine species (I₂, CH₃I, I₃⁻) is vital for nuclear safety and environmental protection. However, developing multifunctional adsorbents that remain effective under diverse conditions remains a significant challenge. Herein, we report two functionalized PD-COFs (PD-WS and PD-WY) with moderate crystallinity, outstanding thermal stability, and robust chemical resistance. They exhibit superior adsorption performance in both gas and liquid phases. Specifically, at 75°C, PD-WY achieves capacities of 4.88 g g⁻¹ for I₂, 1.55 g g⁻¹ for CH₃I, and 5.55 g g⁻¹ for the I₂/CH₃I mixture, while high capacities are also retained at room temperature. In solution, PD-WY adsorbs up to 3.56 g g⁻¹ of I₃⁻ in water and 2.00 g g⁻¹ of iodine in cyclohexane. These COFs display rapid kinetics (<i>K</i>_80% = 3.25 g g⁻¹ h⁻¹ for I₂ and 7.89 g g⁻¹ h⁻¹ for I₃⁻) and excellent selectivity. Mechanistic studies indicated that the excellent iodine affinity of PD-COFs arises from their rich electronic structures, abundant active sites, and charge transfer interactions. These findings position PD-COFs as highly promising adsorbents for nuclear waste treatment and environmental remediation.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4961 - 4971"},"PeriodicalIF":7.7,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning interfacial water supply and electron transfer enables industrial-scale alkaline hydrogen evolution","authors":"Zhaoyang Shi \u0000 (,&nbsp;),&nbsp;Xiaotong Wan \u0000 (,&nbsp;),&nbsp;Penghui Huang \u0000 (,&nbsp;),&nbsp;Yuxiang Guo \u0000 (,&nbsp;),&nbsp;Zhe Wang \u0000 (,&nbsp;),&nbsp;Yang Yang \u0000 (,&nbsp;),&nbsp;Sirui Huang \u0000 (,&nbsp;),&nbsp;Danji Huang \u0000 (,&nbsp;),&nbsp;Youwen Liu \u0000 (,&nbsp;),&nbsp;Tianyou Zhai \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4036-4","DOIUrl":"10.1007/s40843-025-4036-4","url":null,"abstract":"<div><p>Alkaline water electrolysis represents a pivotal technology for large-scale green hydrogen production, yet its efficiency is severely constrained by the sluggish kinetics of the hydrogen evolution reaction (HER) at industrial current densities. Herein, we propose a synergistic dual-doping strategy to significantly lower the kinetic barriers for both the Volmer and Heyrovsky steps, thereby enabling ultrastable and high-efficiency hydrogen evolution. To validate this concept, a robust amorphous NiCoV nanosheet electrode was synthesized via a scalable one-step electrodeposition process. <i>In situ</i> spectroscopic and kinetic characterizations reveal that the incorporation of hydrophilic V species optimizes the interfacial water environment by disrupting the hydrogen bond network and ensuring a rapid supply of free water reactants at the inner Helmholtz plane. Simultaneously, the Co dopants modulate the electronic structure to facilitate efficient electron transfer and optimize the adsorption energetics of intermediates. Consequently, the NiCoV electrode requires an ultralow overpotential of 253 mV to drive −400 mA cm⁻², surpassing most reported Pt-based catalysts, and maintains stability for over 200 h. Industrial validation in a scaled-up electrolyzer demonstrates a cell voltage of 1.89 V at 400 mA cm⁻², achieving an energy saving of 0.12 kWh m⁻³ H₂ compared to commercial benchmarks. This translates to an annual electricity saving of 1.33 × 10⁶ kWh for a medium-scale demonstration project, highlighting the immense potential for sustainable industrial applications.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4687 - 4696"},"PeriodicalIF":7.7,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting output performance in hydrogel-based moisture-electric generators via tunable solvent interactions","authors":"Xingyi Dai \u0000 (,&nbsp;),&nbsp;Jiaxin Han \u0000 (,&nbsp;),&nbsp;Yifei Zhao \u0000 (,&nbsp;),&nbsp;Weng Fu Io \u0000 (,&nbsp;),&nbsp;Xuyang Zhang \u0000 (,&nbsp;),&nbsp;Biqin Dong \u0000 (,&nbsp;),&nbsp;Long-Biao Huang \u0000 (,&nbsp;),&nbsp;Jianhua Hao \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4007-x","DOIUrl":"10.1007/s40843-025-4007-x","url":null,"abstract":"<div><p>Hydrogels, with their hydrophilicity, flexibility, and environmental friendliness, are highly desirable for moisture-electric generators (MEGs) that harness ubiquitous moisture to generate electrical energy. As the active material layer in MEGs, hydrogels play a crucial role in absorbing atmospheric moisture and converting chemical potential energy into electricity. However, the relatively low output current of the device and the instability of hydrogels pose challenges to the development of high-performance hydrogel-based MEGs. Herein, we introduce a straightforward, feasible, cost-effective, and versatile two-step solvent displacement strategy to overcome the barrier associated with the development of MEGs. Through tunable solvent interactions of glycerol and water, the moisture absorption capability and stability of the hydrogel can be improved, while promoting favorable ion migration. Such an effective processing route not only significantly boosts the output performances but also greatly improves the long-term durability of hydrogel-based MEGs. Notably, the current output and power density of the treated MEGs can increase by up to two orders of magnitude. The mechanisms behind the intriguing observation are investigated by various characterizations and theoretical calculations. This universal strategy holds promise to be extended to various hydrogel-based MEGs. Moreover, the MEGs can be used for energy harvesting, self-powered respiratory monitoring, and non-contact humidity detection. This work offers new opportunities for advancing green energy and self-powered technologies.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4756 - 4765"},"PeriodicalIF":7.7,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40843-025-4007-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Candidate contact layer for SnTe-based thermoelectric device","authors":"Jing Tang \u0000 (,&nbsp;),&nbsp;Yanzhong Pei \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3972-9","DOIUrl":"10.1007/s40843-025-3972-9","url":null,"abstract":"<div><p>SnTe-based thermoelectric materials have demonstrated significant improvements in performance and are considered a promising, less-toxic alternative to PbTe. However, a substantial gap persists between experimental device efficiencies and those predicted from material performance metrics, primarily due to extra resistance in the contact layers. To fully realize the potential of SnTe thermoelectrics at the device level, it is critical to develop contact layers that ensure strong interfacial bonding, high thermal stability, and low electrical contact resistance. Although Ni is the most commonly used contact material for SnTe devices, it exhibits significant interdiffusion with SnTe, which can degrade interfacial integrity and ultimately lead to long-term device failure. Here, a reliable contact layer for SnTe through ther-modynamic analysis of the SnTe-Ni₃Te₂ phase diagram is identified, Ni_5.75SnTe₅ selected as a promising candidate. A single-leg thermoelectric device based on Sn_0.96Bi_0.04Te_0.98Se_0.02 with Ni_5.75SnTe₅ as a contact layer is fabricated, achieving a contact resistivity of approximately 3.7 µΩ cm². This contact layer selection strategy shows great promise for application to other thermoelectric materials.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4954 - 4960"},"PeriodicalIF":7.7,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shape memory quasi-liquid slippery surface","authors":"Xuan Zhang \u0000 (,&nbsp;),&nbsp;Deping Ma \u0000 (,&nbsp;),&nbsp;Liang Geng \u0000 (,&nbsp;),&nbsp;Yuan Chen \u0000 (,&nbsp;),&nbsp;Yuyan Liu \u0000 (,&nbsp;),&nbsp;Hua Lai \u0000 (,&nbsp;),&nbsp;Zhimin Xie \u0000 (,&nbsp;),&nbsp;Zhongjun Cheng \u0000 (,&nbsp;),&nbsp;Lei Jiang \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4100-9","DOIUrl":"10.1007/s40843-025-4100-9","url":null,"abstract":"<div><p>Shape memory droplet manipulation platforms have garnered widespread attention due to their programmable droplet control capabilities. Current research primarily focuses on superhydrophobic surfaces and slippery lubricant-infused porous surfaces (SLIPS); however, vulnerable surface micro/nanostructures and loss of lubricant oils are unavoidable. Herein, we report a shape memory quasi-liquid polydimethylsiloxane (PDMS) brush surface that can avoid the above imperfections. The surface was prepared by introducing a layer of SiO₂ as a “bridge” on a shape memory epoxy substrate to provide abundant functional active groups for grafting PDMS brushes. By precisely controlling the thickness of the SiO₂ layer and the grafting condition of the PDMS brushes, the obtained surface shows good shape memory property and low adhesion to diverse liquids with different surface tensions. Reversible anisotropic/isotropic droplets sliding control for both water and organic droplets was demonstrated through dynamic introduction/removal of the groove structures on the surface, proving the excellent droplet manipulation function based on the combination of shape memory property and the low adhesion of the PDMS brushes. Furthermore, the obtained material can be used as a functional coating for diverse substrates to impart anti-fouling and self-cleaning properties. This work proposed the use of a nanoscale SiO₂ layer as a “bridge”, which offers a strategy to address the challenge of grafting PDMS brushes onto a polymer surface. Meanwhile, given the excellent advantages of quasi-liquid PDMS brushes and programmable controllability of shape memory polymer, this work could provide some fresh ideas for the development of a droplet manipulation platform.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4808 - 4819"},"PeriodicalIF":7.7,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stress-guided anisotropic etching of MoS2 nanostructure with spatial control over edge structure and morphology","authors":"Wenhui Sun \u0000 (,&nbsp;),&nbsp;Shuiyan Cao \u0000 (,&nbsp;),&nbsp;Wenfa Chen \u0000 (,&nbsp;),&nbsp;Ying Liu \u0000 (,&nbsp;),&nbsp;Siyuan He \u0000 (,&nbsp;),&nbsp;Yuwei Zhang \u0000 (,&nbsp;),&nbsp;Tao Zhou \u0000 (,&nbsp;),&nbsp;Junchen Wu \u0000 (,&nbsp;),&nbsp;Pin Lyu \u0000 (,&nbsp;),&nbsp;Jinguo Liu \u0000 (,&nbsp;),&nbsp;Dongyang Wan \u0000 (,&nbsp;),&nbsp;Mingming Jiang \u0000 (,&nbsp;),&nbsp;Caixia Kan \u0000 (,&nbsp;),&nbsp;Shisheng Li \u0000 (,&nbsp;),&nbsp;Yanpeng Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-4097-3","DOIUrl":"10.1007/s40843-025-4097-3","url":null,"abstract":"<div><p>The on-demand patterning of two-dimensional transition metal dichalcogenides (TMDs) with tailored edges are of great importance in their usages in electronic and optoelectronic applications, but remain technically challenging. Herein, we developed a stress-guided anisotropic etching strategy that can produce large-area and well-ordered MoS₂ nanostructures (e.g., nano-ribbons and nano-squares) in a template-free fashion. By creating uniaxially cumulative stress followed by selective thermal etching, the MoS₂ monolayers were statistically etched into ribbon-like structures, the width of which can be manifested and inversely proportional to the applied stress magnitude. In addition, these newly etched edges are found to be macroscopically straight or serrated ones, but predominantly Mo-zigzag terminated and remarkably enhanced the photoluminescence by a factor of ∼8.0. The priority of two edge category experimentally relies on the angle between the stress direction and the crystallographic orientation of MoS₂, also supported by theoretical calculations. We further demonstrate that biaxial stressing MoS₂ crystals could generate an array of well-defined nano-squares, thereby providing a scalable and versatile patterning route to engineer 2D materials with tailored functional edges, which hold great potential for future electrocatalytic and optoelectronic applications.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"69 8","pages":"4558 - 4567"},"PeriodicalIF":7.7,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148652346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}