Materials & Design最新文献_第3页

Longitudinal wave propagation behavior and dimension effect of origami-inspired metamaterials prepared by laser powder bed fusion

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-07 DOI: 10.1016/j.matdes.2025.113781

Ke Chen , Haoran Wan , Hongyu Chen , Xiang Fang , Tiwen Lu , Yonggang Wang , Yang Liu , Konrad Kosiba

{"title":"Longitudinal wave propagation behavior and dimension effect of origami-inspired metamaterials prepared by laser powder bed fusion","authors":"Ke Chen , Haoran Wan , Hongyu Chen , Xiang Fang , Tiwen Lu , Yonggang Wang , Yang Liu , Konrad Kosiba","doi":"10.1016/j.matdes.2025.113781","DOIUrl":"10.1016/j.matdes.2025.113781","url":null,"abstract":"<div><div>Origami principles have garnered significant attention in science and engineering due to their unique deformation behaviors and resultant mechanical properties. This study introduces an innovative elastic metamaterial inspired by Miura-origami tubes, fabricated using laser powder bed fusion (LPBF), a prevalent additive manufacturing technique. The metamaterial’s unit cell consists of a diamond-shaped frame and a pair of orthogonal springs, displaying quasi-zero stiffness through the interaction of lateral and longitudinal springs, which balances internal pressure and tension. The transmission and dispersion of longitudinal waves in these metamaterials, with varying structural parameters, were systematically investigated. The findings demonstrate that the Miura-origami inspired metamaterial can generate ultra-wide band gaps for low-frequency longitudinal waves (500 Hz to 2500 Hz). It effectively converts longitudinal waves into other energy forms via internal vibration mode transformations. Structural parameters critically impact the metamaterial’s mechanical performance and manufacturing quality. Optimal parameters for LPBF fabrication were identified through rigorous experiments and simulations. These origami-inspired elastic metamaterials show substantial promise for vibration mitigation in civil, medical, mechanical, and aerospace engineering applications.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113781"},"PeriodicalIF":7.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600496","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}

引用次数: 0

Melting mode-driven processing diagram for nanoparticle-enhanced high-strength aluminum alloy processed by laser powder bed fusion

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-07 DOI: 10.1016/j.matdes.2025.113794

Ali Rezaei , Mohsen K. Keshavarz , John Barnes , Mihaela Vlasea

{"title":"Melting mode-driven processing diagram for nanoparticle-enhanced high-strength aluminum alloy processed by laser powder bed fusion","authors":"Ali Rezaei , Mohsen K. Keshavarz , John Barnes , Mihaela Vlasea","doi":"10.1016/j.matdes.2025.113794","DOIUrl":"10.1016/j.matdes.2025.113794","url":null,"abstract":"<div><div>AA7075 + ZrH<sub>2</sub> (7A76) is a nanoparticle-enhanced high-strength Al alloy, designed to substantially prevent solidification cracking during laser powder bed fusion (LPBF). Significant knowledge gaps persist in understanding the effects of melting modes, the functionality of nanoparticles, and compositional variations in this material system. This study systematically investigates the melting modes in LPBF of 7A76 to achieve defect-free samples. Processing diagrams were generated using dimensionless heat input (<em>E*</em>) and velocity (<em>v*</em>) terms, alongside a physics-based temperature prediction model used to predict melting mode thresholds. A wide operation window was discovered within the transition melting mode region, resulting in defect-free 7A76, reaching a relative density of 99.98 %, reported for the first time. Furthermore, the transition melting mode was effective in lowering the Mg and Zn evaporation. Microstructural characterizations revealed that although melting and solidification during the LPBF process resulted in the dissolution of Zr into the printed alloy, some Zr-rich particles remained unmelted. This work represents the first observation of grain nucleation on the partially melted Zr-rich particles in this modified alloy. Additionally, this work sheds light on the successful printing of nanoparticle-enhanced, crack-prone aluminum alloys using processing diagrams, while elucidating the role of nanoparticles in this process.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113794"},"PeriodicalIF":7.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600572","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}

引用次数: 0

Spring-based mechanical metamaterials with deep-learning-accelerated design

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-06 DOI: 10.1016/j.matdes.2025.113800

Xiaofeng Guo , Xiaoyang Zheng , Jiaxin Zhou , Takayuki Yamada , Yong Yi , Ikumu Watanabe

{"title":"Spring-based mechanical metamaterials with deep-learning-accelerated design","authors":"Xiaofeng Guo , Xiaoyang Zheng , Jiaxin Zhou , Takayuki Yamada , Yong Yi , Ikumu Watanabe","doi":"10.1016/j.matdes.2025.113800","DOIUrl":"10.1016/j.matdes.2025.113800","url":null,"abstract":"<div><div>Mechanical metamaterials exhibit unique properties that depend on their microstructure and surpass those of their constituent materials. Flexible mechanical metamaterials, in particular, hold significant potential for applications requiring substantial deformations, such as soft robotics and energy absorption. In this study, we proposed a collection of flexible mechanical metamaterials discretely assembled using structural spring elements. These spring elements enhance both flexibility and reversibility, allowing the materials to withstand large deformations. The geometric regularity of the metamaterials enables zero-shot learning, allowing deep learning frameworks to address property prediction and inverse design problems beyond the training dataset. Using a property-prediction model, the effective mechanical properties of these metamaterials can be accurately predicted based on specified design parameters. Furthermore, an inverse-design model enables the direct generation of mechanical metamaterials with desired target properties, even outside the training dataspace, in the range of Young's modulus <em>E</em> ∈ (0, 350) kPa and Poisson's ratio <em>ν</em> ∈ (-0.12, 0.12). The properties of these inversely designed metamaterials are analyzed through finite element method simulations and mechanical testing. The deep learning-accelerated design approach not only streamlines the development process but also provides a framework for advancing metamaterial design, encompassing property prediction and inverse design.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113800"},"PeriodicalIF":7.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561870","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}

引用次数: 0

Insight into the nanoscale strengthening mechanism of polycrystalline iron implanted by Cr ions

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-06 DOI: 10.1016/j.matdes.2025.113814

Tingting Jiang, Jinyuan Tang, Jiuyue Zhao, Yihao Ling, Yelin Zeng

{"title":"Insight into the nanoscale strengthening mechanism of polycrystalline iron implanted by Cr ions","authors":"Tingting Jiang, Jinyuan Tang, Jiuyue Zhao, Yihao Ling, Yelin Zeng","doi":"10.1016/j.matdes.2025.113814","DOIUrl":"10.1016/j.matdes.2025.113814","url":null,"abstract":"<div><div>The strengthening mechanisms of ion implantation remain a challenge for the application on high-performance precision mechanical manufacturing. Based on the molecular dynamics (MD) method, the paper aims to explore the nanoscale mechanisms of the polycrystalline iron implanted by Cr ions. The microstructural evolution under implantation is analyzed, and the mechanical properties of different models under nanoindentation are studied. The results show that the ion implantation reduces surface roughness while enhancing both Young’s modulus and hardness. The increase in hardness arises from Cr atoms and interstitials obstructing dislocation propagation and the inverse Hall-Petch effect, which works by transforming the deformation from being grain boundary-dominated to dislocation-dominated. The role of grain boundaries (GBs) in ion implantation and deformation are analyzed by the molecular statics method and atomic displacement field. It is found that GB sites have lower point defect formation energy than the bulk and GB atoms first participate in plastic deformation. Additionally, the interactions between dislocations and GBs are investigated. This article provides an innovative research approach for exploring the nanoscale strengthening mechanisms of ion implantation by MD method.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"253 ","pages":"Article 113814"},"PeriodicalIF":7.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632231","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}

引用次数: 0

Synergistic strengthening and toughening in β titanium alloy via enhanced micron-sized primary α with the fiber-like β grains 通过增强微米级原生 α 与纤维状 β 晶粒在 β 钛合金中的协同强化和增韧作用

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-06 DOI: 10.1016/j.matdes.2025.113816

Leliang Liu , Qiaoyan Sun , Jixiong Liu , Xiaoxiang Wang , Jun Sun

{"title":"Synergistic strengthening and toughening in β titanium alloy via enhanced micron-sized primary α with the fiber-like β grains","authors":"Leliang Liu , Qiaoyan Sun , Jixiong Liu , Xiaoxiang Wang , Jun Sun","doi":"10.1016/j.matdes.2025.113816","DOIUrl":"10.1016/j.matdes.2025.113816","url":null,"abstract":"<div><div>The trade-offs between strength and toughness and strength and ductility restrict the broader use of high-strength titanium alloys. To optimize the coordination of strength, ductility and toughness, a fiber-like structure in a metastable β titanium alloy was architected through a simple thermomechanical process and aging treatment. During the thermomechanical process, the microscale primary α phase (α<sub>p</sub>) hindered the migration of β grain boundaries and coordinated the deformation, forming fiber-like β grains. The fiber-like β grains effectively hinder and deflect crack propagation in Charpy impact tests, significantly enhancing the impact toughness. Meanwhile, plenty of kink bands activated in the α<sub>p</sub> after the thermomechanical process, refining the α grains and resulting in high yield strength and ductility. The impact toughness of the fiber-structured titanium alloy rises from 28.3 ± 2.5 J/cm<sup>2</sup> to 47.3 ± 2.8 J/cm<sup>2</sup> when compared to the sample with a bimodal structure, while the yield strength and elongation remain at the same level. The design of Fiber-structured titanium alloys synergistically enhances the strength, ductility and toughness of the Ti-Al-Mo-V-Cr-Nb titanium alloy, providing a novel way to coordinate the strength, ductility and toughness of high-strength titanium alloy.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113816"},"PeriodicalIF":7.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591533","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}

引用次数: 0

Infrared Spectroscopic Characterization by Atomic Force Microscopy of Two Model Nano-Samples of Low-Density Polyethylene Designed by Laser Ablation and Ultraviolet/Ultrasound

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-06 DOI: 10.1016/j.matdes.2025.113804

Ikuna Kanehara , Naoto Washihira , Tatsuhiro Nagasaka , Hirofumi Seki , Sho Fujii , Tsuyoshi Kimura , Masaya Yamamoto , Tadao Tanabe

{"title":"Infrared Spectroscopic Characterization by Atomic Force Microscopy of Two Model Nano-Samples of Low-Density Polyethylene Designed by Laser Ablation and Ultraviolet/Ultrasound","authors":"Ikuna Kanehara , Naoto Washihira , Tatsuhiro Nagasaka , Hirofumi Seki , Sho Fujii , Tsuyoshi Kimura , Masaya Yamamoto , Tadao Tanabe","doi":"10.1016/j.matdes.2025.113804","DOIUrl":"10.1016/j.matdes.2025.113804","url":null,"abstract":"<div><div>Model plastic samples mimicking the behavior of environmental nanoparticles (NPs) are necessary for understanding their biological effects. This is because the particle size and surface chemistry of plastic particles can be parameters for biotoxicity testing. Therefore, different types of particles need to be produced or designed. In this study, the chemical and physical properties of two model nano-samples of Low-Density Polyethylene (LDPE) were investigated; one designed by nanosecond laser ablation (LASER-LDPE.NPs), and the other designed by a combination of Ultraviolet (UV) irradiation and Ultrasound (US) exposure (UV/US-LDPE.NPs). AFM-IR, for detecting and imaging the response of a sample by scanning an AFM cantilever while irradiating an IR laser, was used to analyze the local chemical properties of these particles. New peaks specific to oxidation and degradation reactions were observed. In addition, the LASER-LDPE.NPs tend to have greater oxidation behavior with increasing methyl groups and a greater degradation with increasing carbonyl index than UV/US-LDPE.NPs. It was found that each NP production process produces NPs with unique chemical and physical properties. These designed model plastic particles mimic NPs in the environment and a study of their respective oxidation and degradation properties is expected to provide new insights into the assessment of biological effects. (200 words)</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113804"},"PeriodicalIF":7.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580373","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}

引用次数: 0

3D multi-site hydrogen evolution reaction catalysts on nanoimprinted surfaces, structured via multi-photon lithography derived masks

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-05 DOI: 10.1016/j.matdes.2025.113809

Alexander Jelinek , Daniela Neumüller , Christoph Gammer , Jürgen Eckert , Daniel Kiener

{"title":"3D multi-site hydrogen evolution reaction catalysts on nanoimprinted surfaces, structured via multi-photon lithography derived masks","authors":"Alexander Jelinek , Daniela Neumüller , Christoph Gammer , Jürgen Eckert , Daniel Kiener","doi":"10.1016/j.matdes.2025.113809","DOIUrl":"10.1016/j.matdes.2025.113809","url":null,"abstract":"<div><div>Efficient water splitting is a major challenge in green hydrogen production and energy transition. Thus, considerable scientific efforts are devoted to optimize surface geometries for enhancing the performance of water-splitting catalysts. The current study aims to develop a reliable and facile 3-step (re-)production technique for manufacturing structured surfaces by combining multi-photon lithography (MPL) and nanoimprint lithography (NIL). MPL enables structuring of high-definition micrometer-scale surface geometries. A variation of these topologies was used as masks for replication by NIL. Thus, molds were derived to emboss the original nanostructured topologies repeatedly into a UV-curable resin. Subsequently, a Ni thin film metallization was deposited by physical vapor deposition onto the final imprinted polymeric structures, thereby realizing topologically structured conductive electrodes. To demonstrate the applicability of this elaborated technique, the catalytic activities towards the hydrogen evolution reaction were assessed for different surface geometries. An increase in catalytic performance was achieved through surface enlargement by structuring, whereby a direct contribution of the specific structure geometry was not evident. This elegant method is highly versatile and scalable for producing a wide range of structured functional surfaces on a lab scale, as demonstrated for the water splitting reaction, with results transferable to an industrial scale.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113809"},"PeriodicalIF":7.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600573","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}

引用次数: 0

Injectable PRP-Enriched photosensitive hydrogel: Enhanced prevention and infection control in anastomotic leaks

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-05 DOI: 10.1016/j.matdes.2025.113813

Huijie Wang , Dongjie Zhang , Yiheng Ju , Yihui Cheng , Lei Liu , Houxi Li , Lianghong Lv , Jing Zhang , Yun Lu

{"title":"Injectable PRP-Enriched photosensitive hydrogel: Enhanced prevention and infection control in anastomotic leaks","authors":"Huijie Wang , Dongjie Zhang , Yiheng Ju , Yihui Cheng , Lei Liu , Houxi Li , Lianghong Lv , Jing Zhang , Yun Lu","doi":"10.1016/j.matdes.2025.113813","DOIUrl":"10.1016/j.matdes.2025.113813","url":null,"abstract":"<div><div>The occurrence of anastomotic leakage (AL) could lead to leakage of digestive fluid, which erodes surrounding organs, subsequently causing severe intra-abdominal infections, hemorrhaging, and even death. Preventing AL was crucial for significantly enhancing patient quality of life. Thus, we developed an injectable photosensitive hydrogel enriched with platelet-rich plasma (PRP) aimed at preventing AL. This study utilized the Schiff-base crosslinking reaction between photosensitive methacryloyl-substituted gelatin (GM) and oxidized dextran (OD), incorporating PRP to create a multifunctional, tri-crosslinked hydrogel (GM/OD@PRP) that effectively promotes AL healing. This GM/OD@PRP exhibited excellent mechanical properties, biocompatibility, and self-healing capabilities. The hydrogel was loaded with PRP, which was rich in various growth factors that stimulate fibroblast proliferation and angiogenesis, thereby increasing cell proliferation, vascular regeneration, and formation and ultimately promoting healing at the anastomotic site. Furthermore, the superior antimicrobial properties of GM/OD@PRP provide a relatively sterile environment at the healing site, reducing the possibility of abdominal infections. In a rat model of AL, the GM/OD@PRP notably enhanced anastomotic healing prevented the occurrence of fistulae, and demonstrated significant advantages in reducing abdominal adhesions. This GM/OD@PRP holds substantial potential for use in preventing AL and represents a promising new composite material for improving patient quality of life.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113813"},"PeriodicalIF":7.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580370","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}

引用次数: 0

A new journey of fluorescent carbon dots: A shining star in the realm of nucleic acid dyes

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-05 DOI: 10.1016/j.matdes.2025.113806

Yu Ma , Bin Zhao , Guozhen Yan , Ting Zhou , Zhihua Xu , Zhihan Niu , Zhenghong Xu , Tongtong Zhang , Feng Shi

{"title":"A new journey of fluorescent carbon dots: A shining star in the realm of nucleic acid dyes","authors":"Yu Ma , Bin Zhao , Guozhen Yan , Ting Zhou , Zhihua Xu , Zhihan Niu , Zhenghong Xu , Tongtong Zhang , Feng Shi","doi":"10.1016/j.matdes.2025.113806","DOIUrl":"10.1016/j.matdes.2025.113806","url":null,"abstract":"<div><div>Nucleic acid dyes play important roles in the quantification and detection of nucleic acids by binding to nucleic acids. However, traditional nucleic acid dyes pose great environmental and economic challenges due to their high price, high toxicity, long dyeing time, low sensitivity and insufficient stability. To overcome these problems, we developed a new nucleic acid dye based on carbon dots, which were generated through hydrothermal synthesis with liquorice components as precursors and a system containing ethylenediamine. This new type of carbon dot can effectively replace traditional dyes and can be used to efficiently visualize DNA, RNA and plasmids via agarose gel electrophoresis. Then, we studied the interaction mechanism between carbon dots and nucleic acids by UV–visible spectroscopy, Fourier transform infrared spectroscopy and circular dichroism spectroscopy. The interaction between the carbon dots and nucleic acids mainly occurred through groove binding and was accompanied by a slight electrostatic interaction. Carbon dots-based nucleic acid dyes, with their low cost, simple synthesis process and high stability, have opened a new path for the field of nucleic acid detection. Its research and development not only promote the frontier progress of biological science and medicine but also introduces innovative strategies and tools for scientific research and clinical practice.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113806"},"PeriodicalIF":7.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580453","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}

引用次数: 0

Negative to zero Poisson’s ratio adjustable UV-PDMS flexible metamaterials fabricated by using 3D photolithography

IF 7.6 2区材料科学

Materials & Design Pub Date : 2025-03-05 DOI: 10.1016/j.matdes.2025.113805

Riku Ito , Yuji Takata , Yuya Tanaka , Hiroshi Toshiyoshi , Takaaki Suzuki

{"title":"Negative to zero Poisson’s ratio adjustable UV-PDMS flexible metamaterials fabricated by using 3D photolithography","authors":"Riku Ito , Yuji Takata , Yuya Tanaka , Hiroshi Toshiyoshi , Takaaki Suzuki","doi":"10.1016/j.matdes.2025.113805","DOIUrl":"10.1016/j.matdes.2025.113805","url":null,"abstract":"<div><div>Mechanical metamaterials (MMs) exhibit mechanical characteristics that are challenging to achieve using existing isotropic materials. Due to their unique characteristics, MMs hold significant potential for applications in diverse fields such as space, architecture, and robotics. This study proposes a method for processing and tuning the mechanical characteristics of MMs composed of UV-curable silicone rubber (UV-PDMS) submillimeter-sized thorough holes, specifically for integration into flexible microdevices. We focused on the microfabrication of polymeric materials with elastic limits and MMs regions, which have traditionally been difficult to achieve. Using 3D photolithography, UV-PDMS was successfully processed to incorporate submillimeter-sized through-holes. Furthermore, MMs with different linewidths were fabricated using from an identical mask pattern by only adjusting the UV incidence angle and exposure dose using 3D photolithography. The resulting flexible MMs exhibited tunable Poisson’s ratios within the range of −0.16 to −0.06.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"252 ","pages":"Article 113805"},"PeriodicalIF":7.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601134","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}

引用次数: 0