Npg Asia Materials最新文献

Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials 在多功能生物启发结构超材料中观察到前所未有的机械波能量吸收现象

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-09-13 DOI: 10.1038/s41427-024-00565-5

Zhendong Li, Xinxin Wang, Kexin Zeng, Zichao Guo, Chong Li, Xiang Yu, Seeram Ramakrishna, Zhonggang Wang, Yang Lu

{"title":"Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials","authors":"Zhendong Li, Xinxin Wang, Kexin Zeng, Zichao Guo, Chong Li, Xiang Yu, Seeram Ramakrishna, Zhonggang Wang, Yang Lu","doi":"10.1038/s41427-024-00565-5","DOIUrl":"https://doi.org/10.1038/s41427-024-00565-5","url":null,"abstract":"In practical engineering, noise and impact hazards are pervasive, indicating the pressing demand for materials that can absorb both sound and stress wave energy simultaneously. However, the rational design of such multifunctional materials remains a challenge. Herein, inspired by cuttlebone, we present bioinspired architected metamaterials with unprecedented sound-absorbing and mechanical properties engineered via a weakly-coupled design. The acoustic elements feature heterogeneous multilayered resonators, whereas the mechanical responses are based on asymmetric cambered cell walls. These metamaterials experimentally demonstrated an average absorption coefficient of 0.80 from 1.0 to 6.0 kHz, with 77% of the data points exceeding the desired 0.75 threshold, all with a compact 21 mm thickness. An absorptance-thickness map is devised for assessing the sound-absorption efficiency. The high-fidelity microstructure-based model reveals the air friction damping mechanism, with broadband behavior attributed to multimodal hybrid resonance. Empowered by the cambered design of cell walls, metamaterials shift catastrophic failure toward a progressive deformation mode characterized by stable stress plateaus and ultrahigh specific energy absorption of 50.7 J/g—a 558.4% increase over the straight-wall design. After the deformation mechanisms are elucidated, a comprehensive research framework for burgeoning acousto-mechanical metamaterials is proposed. Overall, our study broadens the horizon for multifunctional material design.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216206","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}

引用次数: 0

Vortex confinement through an unquantized magnetic flux 通过非量化磁通的涡约束

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-09-06 DOI: 10.1038/s41427-024-00564-6

Geunyong Kim, Jinyoung Yun, Jinho Yang, Ilkyu Yang, Dirk Wulferding, Roman Movshovich, Gil Young Cho, Ki-Seok Kim, Garam Hahn, Jeehoon Kim

引用次数: 0

Lithium-ion battery recycling—a review of the material supply and policy infrastructure 锂离子电池回收--材料供应和政策基础设施回顾

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-08-30 DOI: 10.1038/s41427-024-00562-8

P. M. Tembo, C. Dyer, V. Subramanian

引用次数: 0

Tailoring the grain boundary structure and chemistry of the dendrite-free garnet solid electrolyte Li6.1Ga0.3La3Zr2O12 调整无枝晶石榴石固体电解质 Li6.1Ga0.3La3Zr2O12 的晶界结构和化学性质

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-08-30 DOI: 10.1038/s41427-024-00563-7

Rae-Hyun Lee, Chea-Yun Kang, Jong-Kyu Lee, Bong-Soo Jin, Kyong-Nam Kim, Hyun-Soo Kim, Jung-Rag Yoon, Seung-Hwan Lee

{"title":"Tailoring the grain boundary structure and chemistry of the dendrite-free garnet solid electrolyte Li6.1Ga0.3La3Zr2O12","authors":"Rae-Hyun Lee, Chea-Yun Kang, Jong-Kyu Lee, Bong-Soo Jin, Kyong-Nam Kim, Hyun-Soo Kim, Jung-Rag Yoon, Seung-Hwan Lee","doi":"10.1038/s41427-024-00563-7","DOIUrl":"https://doi.org/10.1038/s41427-024-00563-7","url":null,"abstract":"Garnet-type Li6.1Ga0.3La3Zr2O12 (LGLZO) exhibits high ionic conductivity and extremely low electronic conductivity. The electrochemical properties strongly depend on the characteristics of the grain boundaries and pores in the oxide–ceramic electrolyte. Currently, the main issue of LGLZO is its large grain boundary resistance due to high-temperature sintering. Herein, we propose an effective method for reinforcing the chemical and structural characteristics of the grain boundaries using a Li2O-B2O3-Al2O3 (LBA) sintering aid. In this study, the LBA sintering aid is critical because it fills grain boundaries and void spaces. As a result, LGLZO solid-state electrolytes with sintering aids significantly enhance the ionic conductivity and reduce the activation energy, especially in the grain boundary region. Another crucial issue is the formation of Li dendrites in LGLZO. Since dendritic Li propagates along the grain boundaries, the optimized LGLZO solid-state electrolyte demonstrates excellent stability against Li metals. Overall, the LGLZO electrolyte with the LBA sintering aid exhibits stable long-term cycling performance due to the well-designed grain boundaries.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216236","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}

引用次数: 0

High tolerance of the superconducting current to large grain boundary angles in potassium-doped BaFe2As2 掺钾 BaFe2As2 中超导电流对大晶界角的高耐受性

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-08-23 DOI: 10.1038/s41427-024-00561-9

Takafumi Hatano, Dongyi Qin, Kazumasa Iida, Hongye Gao, Zimeng Guo, Hikaru Saito, Satoshi Hata, Yusuke Shimada, Michio Naito, Akiyasu Yamamoto

{"title":"High tolerance of the superconducting current to large grain boundary angles in potassium-doped BaFe2As2","authors":"Takafumi Hatano, Dongyi Qin, Kazumasa Iida, Hongye Gao, Zimeng Guo, Hikaru Saito, Satoshi Hata, Yusuke Shimada, Michio Naito, Akiyasu Yamamoto","doi":"10.1038/s41427-024-00561-9","DOIUrl":"https://doi.org/10.1038/s41427-024-00561-9","url":null,"abstract":"Superconducting magnets based on high-temperature superconductors (HTSs) have become critical components in cutting-edge technologies such as advanced medical applications. In HTSs, weak links of superconductivity are inevitable at high-angle grain boundaries (GBs). Thus, two adjacent grains should be crystallographically aligned within the critical angle (θc), for which the intergrain critical current density (Jc) starts to decrease exponentially. The θc of several iron-based superconductors (IBSs) is larger than that of cuprates. However, the decreases in both θc and intergrain Jc under magnetic fields for IBSs are still substantial, hampering their applications in polycrystalline forms. Here, we report that potassium-doped BaFe2As2 (Ba122:K) exhibits superior GB performance to that of previously reported IBSs. A transport Jc of over 0.1 MA/cm2 across [001]-tilt GBs with misorientation angles up to θGB = 24° was recorded even at 28 K, which is a required level for practical applications. Additionally, even in an applied magnetic field, θc was unaltered, and the decay of the intergrain Jc was small. Our results highlight the exceptional potential of Ba122:K for polycrystalline applications and pave the way for next-generation superconducting magnets.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216238","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}

引用次数: 0

A multifunctional mesoporous silica drug delivery nanosystem that ameliorates tumor hypoxia and increases radiotherapy efficacy 一种能改善肿瘤缺氧并提高放疗疗效的多功能介孔二氧化硅给药纳米系统

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-08-16 DOI: 10.1038/s41427-024-00560-w

Yanhong Chu, LiFeng Wang, Yaohua Ke, Xiaoyu Feng, Wenmei Rao, Wei Ren, Kai Xin, Yan Wang, Lixia Yu, Baorui Liu, Qin Liu

{"title":"A multifunctional mesoporous silica drug delivery nanosystem that ameliorates tumor hypoxia and increases radiotherapy efficacy","authors":"Yanhong Chu, LiFeng Wang, Yaohua Ke, Xiaoyu Feng, Wenmei Rao, Wei Ren, Kai Xin, Yan Wang, Lixia Yu, Baorui Liu, Qin Liu","doi":"10.1038/s41427-024-00560-w","DOIUrl":"https://doi.org/10.1038/s41427-024-00560-w","url":null,"abstract":"Radiotherapy (RT) is a widely used treatment with strong therapeutic effects, but overcoming challenges related to hypoxia-induced tumor resistance and ineffective antitumor immune responses is crucial for optimal outcomes. In this study, we developed a versatile nanosystem using mesoporous silica nanoparticles (MSNs), R837, and a small quantity of manganese peroxide (Mn/ZnO2). The synthesized MSN@R837-Mn/ZnO2 nanoparticles exhibited precise tumor targeting and accumulation, controlled drug release under acidic conditions, and increased sensitivity in magnetic resonance imaging. These attributes collectively augmented the therapeutic efficacy of RT by alleviating hypoxia and immunosuppression. Tumor cells treated with RT combined with these nanoparticles displayed reduced oxidative stress, alleviated hypoxia, and normalized blood vessel formation. Notably, all mice in the RT + PD-1 + MSN@R837-Mn/ZnO2 group achieved complete tumor regression with extended survival. Safety assessments confirmed the absence of MSN@R837-Mn/ZnO2 toxicity, highlighting its potential as a promising approach with dual functionality for the diagnostic imaging and treatment of cancer.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216239","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}

引用次数: 0

Probing the weak limit of magnetocrystalline anisotropy through a spin‒flop transition in the van der Waals antiferromagnet CrPS4 通过范德华反铁磁体 CrPS4 的自旋翻转转变探究磁晶各向异性的弱极限

IF 8.6 2区材料科学

Npg Asia Materials Pub Date : 2024-08-09 DOI: 10.1038/s41427-024-00559-3

Jae Yeon Seo, Sunghyun Lim, H. Shin, Ki Won Jeong, Jae Min Hong, Kyungsun Moon, Mi Kyung Kim, N. Lee, Young Jai Choi

引用次数: 0

Thermoregulatory integration in hand prostheses and humanoid robots through blood vessel simulation 通过血管模拟实现手部假肢和仿人机器人的体温调节一体化

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-07-26 DOI: 10.1038/s41427-024-00558-4

Sang-Mi Jeong, Jonguk Yang, Youngsoo Kang, Hee Sung Seo, Keumyoung Seo, Taekyung Lim, Sanghyun Ju

{"title":"Thermoregulatory integration in hand prostheses and humanoid robots through blood vessel simulation","authors":"Sang-Mi Jeong, Jonguk Yang, Youngsoo Kang, Hee Sung Seo, Keumyoung Seo, Taekyung Lim, Sanghyun Ju","doi":"10.1038/s41427-024-00558-4","DOIUrl":"https://doi.org/10.1038/s41427-024-00558-4","url":null,"abstract":"In this paper, we introduce an innovative approach for generating robotic faces with a thermal signature similar to that of humans and equipping prosthetic or robotic hands with a lifelike temperature distribution. This approach enhances their detection via infrared cameras and promotes more natural interactions between humans and robots. This method integrates a temperature regulation system into artificial skin, drawing inspiration from the human body’s natural temperature control via blood flow. Central to this technique is a fiber network simulating blood vessels within the artificial skin. Water flows through these fibers under specific temperature and flow conditions, forming a controlled heat release system. The heat emission can be adjusted by changing the dilation of these fibers, primarily by modulating the frequency of circulation. Our findings indicate that this approach can replicate the varied thermal characteristics of different human faces and hand areas. Consequently, the robotic faces appear more human-like in infrared images, aiding their identification by infrared cameras. At the same time, the prosthetic hands achieve a more natural temperature, reducing the discomfort typically felt in direct contact with synthetic limbs. The aim of this study was to address the challenges faced by the users of prosthetic hands. The results from this study show a promising direction in humanoid robotics, fostering improved tactile interactions and redefining human–robot relationships. This innovative technique facilitates further advancements, blurring the lines between artificial aids and natural biological systems.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771071","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}

引用次数: 0

+Emerging organic electrode materials for sustainable batteries +用于可持续电池的新兴有机电极材料

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-07-19 DOI: 10.1038/s41427-024-00557-5

P. M. Hari Prasad, G. Malavika, Anuraj Pillai, Sachu Sadan, Zeena S. Pillai

{"title":"+Emerging organic electrode materials for sustainable batteries","authors":"P. M. Hari Prasad, G. Malavika, Anuraj Pillai, Sachu Sadan, Zeena S. Pillai","doi":"10.1038/s41427-024-00557-5","DOIUrl":"https://doi.org/10.1038/s41427-024-00557-5","url":null,"abstract":"Organic electrode materials (OEMs) possess low discharge potentials and charge‒discharge rates, making them suitable for use as affordable and eco-friendly rechargeable energy storage systems without needing metals such as lithium or sodium. OEMs can provide a sustainable energy economy by their development into stable and efficient next-generation high-power batteries. Despite the presence of several classes of OEMs, such as conducting polymers, 2D and 3D metal-organic frameworks, organolithium derivatives, 2D covalent organic frameworks, aromatic heterocyclic imides, and viologen derivatives, since their introduction in the 1960s, carbonyl-based molecules have maintained low discharge potentials and stable charging/discharging properties. Nevertheless, several redox-active organic molecules, including carbonyl derivatives, show poor electrochemical stability and ionic mobility in standard battery electrolytes, hampering their commercial use. Therefore, with the increased demand for renewable energy, the synthesis and testing of carbonyl-based OEMs continue to be performed in energy research. This review summarizes recent advances in developing carbonyl-based OEMs and their performance in rechargeable batteries.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738511","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}

引用次数: 0

Twist angle-dependent transport properties of twisted bilayer graphene 扭曲双层石墨烯的扭曲角度输运特性

IF 9.7 2区材料科学

Npg Asia Materials Pub Date : 2024-07-12 DOI: 10.1038/s41427-024-00556-6

Jin Hong Kim, Seoung-Hun Kang, Duhee Yoon, Hakseong Kim, Jin-Soo Kim, Mohd Musaib Haidari, Dong Jin Jang, Jin-Yong Ko, Young-Woo Son, Bae Ho Park, Jin Sik Choi

{"title":"Twist angle-dependent transport properties of twisted bilayer graphene","authors":"Jin Hong Kim, Seoung-Hun Kang, Duhee Yoon, Hakseong Kim, Jin-Soo Kim, Mohd Musaib Haidari, Dong Jin Jang, Jin-Yong Ko, Young-Woo Son, Bae Ho Park, Jin Sik Choi","doi":"10.1038/s41427-024-00556-6","DOIUrl":"https://doi.org/10.1038/s41427-024-00556-6","url":null,"abstract":"Twisted bilayer graphene (tBLG) with small twist angles has attracted significant attention because of its unique electronic properties arising from the formation of a moiré superlattice. In this study, we systematically characterized the twist-angle-dependent electronic and transport properties of tBLG grown via chemical vapor deposition. This characterization included parameters such as the charge-neutral point voltage, carrier concentration, resistance, and mobility, covering a wide range of twist angles from 0° to 30°. We experimentally demonstrated that these parameters exhibited twist-angle-dependent moiré period trends, with high twist angles exceeding 9°, revealing more practically useful features, including improved mobilities compared to those of single-layer graphene. In addition, we demonstrated that the doping states and work functions were weakly dependent on the twist angles, as confirmed by additional first-principles calculations. This study provides valuable insights into the transport properties of tBLG and its potential for practical applications in the emerging field of twistronics.","PeriodicalId":19382,"journal":{"name":"Npg Asia Materials","volume":null,"pages":null},"PeriodicalIF":9.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608630","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}

引用次数: 0