Nature nanotechnology最新文献_第6页

Operando X-ray characterization platform to unravel catalyst degradation under accelerated stress testing in CO2 electrolysis Operando x射线表征平台揭示二氧化碳电解加速应力测试下催化剂降解

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-05-01 DOI: 10.1038/s41565-025-01916-1

Qiucheng Xu, José A. Zamora Zeledón, Bjørt Óladóttir Joensen, Lena Trotochaud, Andrea Sartori, Lau Morten Kaas, Asger Backholt Moss, Marta Mirolo, Luis Mairena, Sylvia Huynh, Sahil Garg, Stig Helveg, Ib Chorkendorff, Shuai Zhao, Brian Seger, Jakub Drnec

{"title":"Operando X-ray characterization platform to unravel catalyst degradation under accelerated stress testing in CO2 electrolysis","authors":"Qiucheng Xu, José A. Zamora Zeledón, Bjørt Óladóttir Joensen, Lena Trotochaud, Andrea Sartori, Lau Morten Kaas, Asger Backholt Moss, Marta Mirolo, Luis Mairena, Sylvia Huynh, Sahil Garg, Stig Helveg, Ib Chorkendorff, Shuai Zhao, Brian Seger, Jakub Drnec","doi":"10.1038/s41565-025-01916-1","DOIUrl":"https://doi.org/10.1038/s41565-025-01916-1","url":null,"abstract":"Membrane-electrode assembly (MEA)-based CO2 electrolysis shows great potential for industrial-scale chemical production, but long-term stability remains a key challenge. The degradation mechanisms of catalysts and electrodes in MEAs are not yet fully understood. Here a customized operando synchrotron X-ray characterization platform was established to track the time- and space-resolved evolution of ions and water movement, crystal structure and catalyst variations in MEAs. Using Au and Ag model catalysts, we show that the crystalline phase catalyst stability and catalyst–substrate adhesion are critical to MEA durability. Small- and wide-angle X-ray scattering analysis reveals that Au catalysts, with their robust crystal structure and stable catalyst–substrate adhesion, maintain stability under accelerated stress tests, whereas Ag catalysts degrade due to particle agglomeration, an undesirable dissolution–recrystallization process and detachment. This study demonstrates the advanced capabilities of operando X-ray techniques in elucidating catalyst and electrode degradation in CO2 electrolysers.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"224 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143893794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-layer waveguide displays using achromatic metagratings for full-colour augmented reality 单层波导显示使用消色差的超聚集为全彩增强现实

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-30 DOI: 10.1038/s41565-025-01887-3

Seokil Moon, Seokwoo Kim, Joohoon Kim, Chang-Kun Lee, Junsuk Rho

{"title":"Single-layer waveguide displays using achromatic metagratings for full-colour augmented reality","authors":"Seokil Moon, Seokwoo Kim, Joohoon Kim, Chang-Kun Lee, Junsuk Rho","doi":"10.1038/s41565-025-01887-3","DOIUrl":"https://doi.org/10.1038/s41565-025-01887-3","url":null,"abstract":"An ideal waveguide display for augmented reality would feature a single-layer waveguide substrate combined with dispersion-free couplers. While metasurfaces have been explored as a potential solution for waveguide displays, severe limitations—such as low efficiency, poor uniformity and chromatic aberration—remain unresolved. Here we introduce a single-layer waveguide display using achromatic metagratings. The proposed metagratings comprise periodic arrays of rectangular nanostructures, diffracting red, green and blue lights in the same direction. Therefore, they ensure an achromatic propagation angle within the single waveguide substrate maintaining high-quality projected images. As a proof of concept, we demonstrate a full-colour augmented reality waveguide display with a 500-μm-thick single-layer waveguide substrate that substantially reduces the device form factor and weight while enhancing brightness and colour uniformity with a sufficient eyebox. This approach overcomes the limitations of traditional augmented reality near-eye optical designs, which rely on multi-layer grating couplers that require complex fabrication processes and are too heavy for ergonomic head-mounted applications.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"78 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143889413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achromatic metagratings for compact near-eye displays 用于紧凑型近眼显示器的消色差偏聚光器

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-30 DOI: 10.1038/s41565-025-01896-2

引用次数: 0

Nanofabrication of silk microneedles for high-throughput micronutrient delivery and continuous sap monitoring in plants 用于植物高通量微量营养素输送和液液连续监测的丝微针的纳米制造

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-29 DOI: 10.1038/s41565-025-01923-2

Yunteng Cao, Doyoon Kim, Sally Shuxian Koh, Zheng Li, Federica Rigoldi, Julia Eva Fortmueller, Kasey Goh, Yilin Zhang, Eugene J. Lim, Hui Sun, Elise Uyehara, Raju Cheerlavancha, Yangyang Han, Rajeev J. Ram, Daisuke Urano, Benedetto Marelli

{"title":"Nanofabrication of silk microneedles for high-throughput micronutrient delivery and continuous sap monitoring in plants","authors":"Yunteng Cao, Doyoon Kim, Sally Shuxian Koh, Zheng Li, Federica Rigoldi, Julia Eva Fortmueller, Kasey Goh, Yilin Zhang, Eugene J. Lim, Hui Sun, Elise Uyehara, Raju Cheerlavancha, Yangyang Han, Rajeev J. Ram, Daisuke Urano, Benedetto Marelli","doi":"10.1038/s41565-025-01923-2","DOIUrl":"https://doi.org/10.1038/s41565-025-01923-2","url":null,"abstract":"Biomaterials bridging the biotic–abiotic interface in plants offer the opportunity to precisely deliver agrochemicals and continuously monitor plant health, with the goals of increasing resilience to climate change, enhancing crop production and mitigating environmental impact. In this study we report the manipulation of silk fibroin assembly with inorganics nucleation at their phase front to nanomanufacture porous and hollow microneedles that can be interfaced with plants. Plant growth analysis and quantification of wounding gene expression show a non-significant systemic wounding response to the injection of silk microneedles in tomato plants. Microneedles with a hollow structure enable the systemic delivery of plant micronutrients to treat chlorosis in tomato plants and crop biofortification through transport of human micronutrients injected in the petiole and loaded into tomato fruits. Hollow microneedles also provide access to plant vasculature for sap sampling, enabling continuous monitoring and early detection of phytoaccumulation of environmental contaminants such as cadmium.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"8 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ceramic crystals stretch like metal 陶瓷晶体像金属一样伸展

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-29 DOI: 10.1038/s41565-025-01912-5

Wu Zhou, Jian Jiao

引用次数: 0

Fraser Stoddart (1942–2024) 弗雷泽·斯托达特（1942-2024）

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-28 DOI: 10.1038/s41565-025-01911-6

Stuart J. Rowan, William R. Dichtel, Margaret E. Schott

{"title":"Fraser Stoddart (1942–2024)","authors":"Stuart J. Rowan, William R. Dichtel, Margaret E. Schott","doi":"10.1038/s41565-025-01911-6","DOIUrl":"https://doi.org/10.1038/s41565-025-01911-6","url":null,"abstract":"Several excellent obituaries1,2,3 have documented Fraser’s accomplishments. Here, we aim to offer some insights into his philosophy and his distinctive approach to life and science. Whenever possible, we have incorporated Fraser’s own words from his writings4,5,6,7, presentations8,9,10, and personal interactions.Fraser began his independent career at the University of Sheffield, following a postdoctoral stint at Queen’s University in Canada, where he became fascinated with the chemistry of crown ether compounds. His interest in interlocked molecules can be traced to his three-year secondment at the ICI Corporate Laboratory in the UK7. There, he met Howard Colquhoun (later, at the University of Reading) and together they set out to determine whether crown ether complexation could be extended beyond alkyl ammonium ions to transition metal ammines. In Fraser’s words, “a treasure trove of precious metal complexes was unearthed from the [ICI] basement”11. The pair observed that neutral platinum ammines could in fact form crystalline adducts with crown ethers. Structures of the complexes were solved by Fraser’s long-time collaborator David Williams (Imperial College) using X-ray diffraction. Fraser would get particularly excited whenever a letter — or later, an email — arrived from David with the latest crystal structure.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"17 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880632","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}

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Ferroelectric topologies in BaTiO3 nanomembranes for light field manipulation 用于光场操纵的 BaTiO3 纳米膜中的铁电拓扑结构

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-23 DOI: 10.1038/s41565-025-01919-y

Haoying Sun, Pengcheng Chen, Wei Mao, Changqing Guo, Yueying Li, Jierong Wang, Wenjie Sun, Duo Xu, Bo Hao, Tingjun Zhang, Jianan Ma, Jiangfeng Yang, Zhequan Cao, Shengjun Yan, Yuze Guan, Zonghan Wen, Zhangwen Mao, Ningchong Zheng, Zhengbin Gu, Houbing Huang, Peng Wang, Yong Zhang, Di Wu, Yuefeng Nie

{"title":"Ferroelectric topologies in BaTiO3 nanomembranes for light field manipulation","authors":"Haoying Sun, Pengcheng Chen, Wei Mao, Changqing Guo, Yueying Li, Jierong Wang, Wenjie Sun, Duo Xu, Bo Hao, Tingjun Zhang, Jianan Ma, Jiangfeng Yang, Zhequan Cao, Shengjun Yan, Yuze Guan, Zonghan Wen, Zhangwen Mao, Ningchong Zheng, Zhengbin Gu, Houbing Huang, Peng Wang, Yong Zhang, Di Wu, Yuefeng Nie","doi":"10.1038/s41565-025-01919-y","DOIUrl":"https://doi.org/10.1038/s41565-025-01919-y","url":null,"abstract":"Ferroelectric topological textures in oxides exhibit exotic dipole-moment configurations that would be ideal for nonlinear spatial light field manipulation. However, conventional ferroelectric polar topologies are spatially confined to the nanoscale, resulting in a substantial size mismatch with laser modes. Here we report a dome-shaped ferroelectric topology with micrometre-scale lateral dimensions using nanometre-thick freestanding BaTiO3 membranes and demonstrate its feasibility for spatial light field manipulation. The dome-shaped topology results from a radial flexoelectric field created through anisotropic lattice distortion, which, in turn, generates centre-convergent microdomains. The interaction between the continuous curling of dipoles and light promotes the conversion of circularly polarized waves into vortex light fields through nonlinear spin-to-orbit angular momentum conversion. Further dynamic manipulation of vortex light fields can also be achieved by thermal and electrical switching of the polar topology. Our work highlights the potential for other ferroelectric polar topologies in light field manipulation.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"46 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862637","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}

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An orally administered gene editing nanoparticle boosts chemo-immunotherapy in colorectal cancer 口服基因编辑纳米颗粒促进结直肠癌的化学免疫治疗

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-23 DOI: 10.1038/s41565-025-01904-5

Kai Zhao, Yu Yan, Xiao-Kang Jin, Ting Pan, Shi-Man Zhang, Chi-Hui Yang, Zhi-Yong Rao, Xian-Zheng Zhang

{"title":"An orally administered gene editing nanoparticle boosts chemo-immunotherapy in colorectal cancer","authors":"Kai Zhao, Yu Yan, Xiao-Kang Jin, Ting Pan, Shi-Man Zhang, Chi-Hui Yang, Zhi-Yong Rao, Xian-Zheng Zhang","doi":"10.1038/s41565-025-01904-5","DOIUrl":"https://doi.org/10.1038/s41565-025-01904-5","url":null,"abstract":"Chemoresistance and immunosuppression are common obstacles to the efficacy of chemo-immunotherapy in colorectal cancer (CRC) and are regulated by mitochondrial chaperone proteins. Here we show that the disruption of the tumour necrosis factor receptor-associated protein 1 (TRAP1) gene, which encodes a mitochondrial chaperone in tumour cells, causes the translocation of cyclophilin D in tumour cells. This process results in the continuous opening of the mitochondrial permeability transition pore, which enhances chemotherapy-induced cell necrosis and promotes immune responses. On the basis of this discovery we developed an oral CRISPR–Cas9 delivery system based on zwitterionic and polysaccharide polymer-coated nanocomplexes that disrupts the TRAP1 gene in CRC. This system penetrates the intestinal mucus layer and undergoes epithelial transcytosis, accumulating in CRC tissues. It enhances chemotherapeutic efficacy by overcoming chemoresistance and activating the tumour immune microenvironment in orthotopic, chemoresistant and spontaneous CRC models, with remarkable synergistic antitumour effects. This oral CRISPR–Cas9 delivery system represents a promising therapeutic strategy for the clinical management of CRC.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"129 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ferumoxytol promotes haematopoietic stem cell post-injury regeneration as a reactive oxygen species scavenger 阿魏木糖醇作为活性氧清除剂促进造血干细胞损伤后再生

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-23 DOI: 10.1038/s41565-025-01907-2

Qiwei Wang, Wenchang Qian, Yingli Han, Yu Mao, Zhenyue Gao, Yuxuan Chen, Xin Zeng, Huan Lu, Lingli Jiang, Jinxin Li, Ning Gu, Pengxu Qian

{"title":"Ferumoxytol promotes haematopoietic stem cell post-injury regeneration as a reactive oxygen species scavenger","authors":"Qiwei Wang, Wenchang Qian, Yingli Han, Yu Mao, Zhenyue Gao, Yuxuan Chen, Xin Zeng, Huan Lu, Lingli Jiang, Jinxin Li, Ning Gu, Pengxu Qian","doi":"10.1038/s41565-025-01907-2","DOIUrl":"https://doi.org/10.1038/s41565-025-01907-2","url":null,"abstract":"Under stress conditions, such as ex vivo culture, chemotherapy, irradiation and infection, haematopoietic stem cells (HSCs) actively divide to maintain blood cell production. This process leads to production of reactive oxygen species (ROS) that causes HSC exhaustion and haematopoietic failure. Here we show that ferumoxytol (FMT; Feraheme), a Food and Drug Administration-approved nanodrug, is a powerful ROS scavenger capable of relieving ROS in stressed HSCs, facilitating their post-injury regeneration. Mechanistically, the catalase-like activity of FMT reduces intracellular levels of H2O2 and diminishes H2O2-induced cytotoxicity. Moreover, FMT maintains long-term regenerative capacity of transplanted HSCs in pre-conditioned leukaemic mice and shows potential to effectively eliminate leukaemia in vivo while preserving HSCs. Our study highlights FMT as a powerful clinical tool to promote haematopoietic cell recovery in patients undergoing stress-generating treatments.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"17 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-demand formation of Lewis bases for efficient and stable perovskite solar cells 高效稳定的钙钛矿太阳能电池中刘易斯碱的按需形成

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2025-04-17 DOI: 10.1038/s41565-025-01900-9

Sheng Fu, Nannan Sun, Hao Chen, Cheng Liu, Xiaoming Wang, You Li, Abasi Abudulimu, Yuanze Xu, Shipathi Ramakrishnan, Chongwen Li, Yi Yang, Haoyue Wan, Zixu Huang, Yeming Xian, Yifan Yin, Tingting Zhu, Haoran Chen, Amirhossein Rahimi, Muhammad Mohsin Saeed, Yugang Zhang, Qiuming Yu, David S. Ginger, Randy J. Ellingson, Bin Chen, Zhaoning Song, Mercouri G. Kanatzidis, Edward H. Sargent, Yanfa Yan

{"title":"On-demand formation of Lewis bases for efficient and stable perovskite solar cells","authors":"Sheng Fu, Nannan Sun, Hao Chen, Cheng Liu, Xiaoming Wang, You Li, Abasi Abudulimu, Yuanze Xu, Shipathi Ramakrishnan, Chongwen Li, Yi Yang, Haoyue Wan, Zixu Huang, Yeming Xian, Yifan Yin, Tingting Zhu, Haoran Chen, Amirhossein Rahimi, Muhammad Mohsin Saeed, Yugang Zhang, Qiuming Yu, David S. Ginger, Randy J. Ellingson, Bin Chen, Zhaoning Song, Mercouri G. Kanatzidis, Edward H. Sargent, Yanfa Yan","doi":"10.1038/s41565-025-01900-9","DOIUrl":"https://doi.org/10.1038/s41565-025-01900-9","url":null,"abstract":"In the fabrication of FAPbI3-based perovskite solar cells, Lewis bases play a crucial role in facilitating the formation of the desired photovoltaic α-phase. However, an inherent contradiction exists in their role: they must strongly bind to stabilize the intermediate δ-phase, yet weakly bind for rapid removal to enable phase transition and grain growth. To resolve this conflict, we introduced an on-demand Lewis base molecule formation strategy. This approach utilized Lewis-acid-containing organic salts as synthesis additives, which deprotonated to generate Lewis bases precisely when needed and could be reprotonated back to salts for rapid removal once their role is fulfilled. This method promoted the optimal crystallization of α-phase FAPbI3 perovskite films, ensuring the uniform vertical distribution of A-site cations, larger grain sizes and fewer voids at buried interfaces. Perovskite solar cells incorporating semicarbazide hydrochloride achieved an efficiency of 26.1%, with a National Renewable Energy Laboratory-certified quasi-steady-state efficiency of 25.33%. These cells retained 96% of their initial efficiency after 1,000 h of operation at 85 °C under maximum power point tracking. Additionally, mini-modules with an aperture area of 11.52 cm2 reached an efficiency of 21.47%. This strategy is broadly applicable to all Lewis-acid-containing organic salts with low acid dissociation constants and offers a universal approach to enhance the performance of perovskite solar cells and modules.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"4 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0