Pub Date : 2024-08-30DOI: 10.1038/s41563-024-01959-0
Arun Devaraj
Atom probe tomography unlocks the potential to precisely analyse the short-range ordering in a CoCrNi medium-entropy alloy.
原子探针层析技术为精确分析钴铬镍中熵合金中的短程有序释放了潜力。
{"title":"Quantifying the atomic neighbourhoods in complex concentrated alloys","authors":"Arun Devaraj","doi":"10.1038/s41563-024-01959-0","DOIUrl":"10.1038/s41563-024-01959-0","url":null,"abstract":"Atom probe tomography unlocks the potential to precisely analyse the short-range ordering in a CoCrNi medium-entropy alloy.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 9","pages":"1153-1154"},"PeriodicalIF":37.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091211","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}
Pub Date : 2024-08-30DOI: 10.1038/s41563-024-01999-6
Inspired by non-trivial band topology and the variety of correlated electronic phases in moiré superlattices formed in van der Waals materials, scientists are finding alternative material platforms to exploit the rich phenomena arising from the twist-angle degree of freedom.
{"title":"Moiré beyond van der Waals","authors":"","doi":"10.1038/s41563-024-01999-6","DOIUrl":"10.1038/s41563-024-01999-6","url":null,"abstract":"Inspired by non-trivial band topology and the variety of correlated electronic phases in moiré superlattices formed in van der Waals materials, scientists are finding alternative material platforms to exploit the rich phenomena arising from the twist-angle degree of freedom.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 9","pages":"1151-1151"},"PeriodicalIF":37.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41563-024-01999-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-30DOI: 10.1038/s41563-024-01969-y
Grace A. R. Rohaley, Torsten Hegmann
Filamentous viruses are a tunable platform for understanding the propagation of chirality across length scales, starting from the helical organization of major coat proteins on the virion surface to the liquid crystalline cholesteric phases formed in aqueous suspensions.
{"title":"Let’s twist again","authors":"Grace A. R. Rohaley, Torsten Hegmann","doi":"10.1038/s41563-024-01969-y","DOIUrl":"10.1038/s41563-024-01969-y","url":null,"abstract":"Filamentous viruses are a tunable platform for understanding the propagation of chirality across length scales, starting from the helical organization of major coat proteins on the virion surface to the liquid crystalline cholesteric phases formed in aqueous suspensions.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 9","pages":"1161-1163"},"PeriodicalIF":37.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091145","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}
Pub Date : 2024-08-28DOI: 10.1038/s41563-024-01986-x
Jihong Bae, Jongbum Won, Taeyoung Kim, Sangjin Choi, Hyesoo Kim, Seung-Hyun Victor Oh, Giyeok Lee, Eunsil Lee, Sijin Jeon, Minjung Kim, Hyung Wan Do, Dongchul Seo, Sungsoon Kim, Youngjun Cho, Hyeonsoo Kang, Bokyeong Kim, Hong Choi, Jihoon Han, Taehoon Kim, Narguess Nemati, Chanho Park, Kyuho Lee, Hongjae Moon, Jeongmin Kim, Hyunggeun Lee, Daniel W. Davies, Dohyun Kim, Seunghun Kang, Byung-Kyu Yu, Jaegyeom Kim, Min Kyung Cho, Jee-Hwan Bae, Soohyung Park, Jungkil Kim, Ha-Jun Sung, Myung-Chul Jung, In Chung, Heonjin Choi, Hyunyong Choi, Dohun Kim, Hionsuck Baik, Jae-Hyun Lee, Heejun Yang, Yunseok Kim, Hong-Gyu Park, Wooyoung Lee, Kee Joo Chang, Miso Kim, Dong Won Chun, Myung Joon Han, Aron Walsh, Aloysius Soon, Jinwoo Cheon, Cheolmin Park, Jong-Young Kim, Wooyoung Shim
Novel two-dimensional semiconductor crystals can exhibit diverse physical properties beyond their inherent semiconducting attributes, making their pursuit paramount. Memristive properties, as exemplars of these attributes, are predominantly manifested in wide-bandgap materials. However, simultaneously harnessing semiconductor properties alongside memristive characteristics to produce memtransistors is challenging. Herein we prepared a class of semiconducting III–V-derived van der Waals crystals, specifically the HxA1–xBX form, exhibiting memristive characteristics. To identify candidates for the material synthesis, we conducted a systematic high-throughput screening, leading us to 44 prospective III–V candidates; of these, we successfully synthesized ten, including nitrides, phosphides, arsenides and antimonides. These materials exhibited intriguing characteristics such as electrochemical polarization and memristive phenomena while retaining their semiconductive attributes. We demonstrated the gate-tunable synaptic and logic functions within single-gate memtransistors, capitalizing on the synergistic interplay between the semiconducting and memristive properties of our two-dimensional crystals. Our approach guides the discovery of van der Waals materials with unique properties from unconventional crystal symmetries. New two-dimensional semiconductors may exhibit properties beyond inherent semiconducting attributes. Here the authors report protonated semiconducting III–V-derived van der Waals crystals with memristive properties.
{"title":"Cation-eutaxy-enabled III–V-derived van der Waals crystals as memristive semiconductors","authors":"Jihong Bae, Jongbum Won, Taeyoung Kim, Sangjin Choi, Hyesoo Kim, Seung-Hyun Victor Oh, Giyeok Lee, Eunsil Lee, Sijin Jeon, Minjung Kim, Hyung Wan Do, Dongchul Seo, Sungsoon Kim, Youngjun Cho, Hyeonsoo Kang, Bokyeong Kim, Hong Choi, Jihoon Han, Taehoon Kim, Narguess Nemati, Chanho Park, Kyuho Lee, Hongjae Moon, Jeongmin Kim, Hyunggeun Lee, Daniel W. Davies, Dohyun Kim, Seunghun Kang, Byung-Kyu Yu, Jaegyeom Kim, Min Kyung Cho, Jee-Hwan Bae, Soohyung Park, Jungkil Kim, Ha-Jun Sung, Myung-Chul Jung, In Chung, Heonjin Choi, Hyunyong Choi, Dohun Kim, Hionsuck Baik, Jae-Hyun Lee, Heejun Yang, Yunseok Kim, Hong-Gyu Park, Wooyoung Lee, Kee Joo Chang, Miso Kim, Dong Won Chun, Myung Joon Han, Aron Walsh, Aloysius Soon, Jinwoo Cheon, Cheolmin Park, Jong-Young Kim, Wooyoung Shim","doi":"10.1038/s41563-024-01986-x","DOIUrl":"10.1038/s41563-024-01986-x","url":null,"abstract":"Novel two-dimensional semiconductor crystals can exhibit diverse physical properties beyond their inherent semiconducting attributes, making their pursuit paramount. Memristive properties, as exemplars of these attributes, are predominantly manifested in wide-bandgap materials. However, simultaneously harnessing semiconductor properties alongside memristive characteristics to produce memtransistors is challenging. Herein we prepared a class of semiconducting III–V-derived van der Waals crystals, specifically the HxA1–xBX form, exhibiting memristive characteristics. To identify candidates for the material synthesis, we conducted a systematic high-throughput screening, leading us to 44 prospective III–V candidates; of these, we successfully synthesized ten, including nitrides, phosphides, arsenides and antimonides. These materials exhibited intriguing characteristics such as electrochemical polarization and memristive phenomena while retaining their semiconductive attributes. We demonstrated the gate-tunable synaptic and logic functions within single-gate memtransistors, capitalizing on the synergistic interplay between the semiconducting and memristive properties of our two-dimensional crystals. Our approach guides the discovery of van der Waals materials with unique properties from unconventional crystal symmetries. New two-dimensional semiconductors may exhibit properties beyond inherent semiconducting attributes. Here the authors report protonated semiconducting III–V-derived van der Waals crystals with memristive properties.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 10","pages":"1402-1410"},"PeriodicalIF":37.2,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142085312","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}
Pub Date : 2024-08-28DOI: 10.1038/s41563-024-01995-w
Hanbin Deng, Guowei Liu, Z. Guguchia, Tianyu Yang, Jinjin Liu, Zhiwei Wang, Yaofeng Xie, Sen Shao, Haiyang Ma, William Liège, Frédéric Bourdarot, Xiao-Yu Yan, Hailang Qin, C. Mielke, R. Khasanov, H. Luetkens, Xianxin Wu, Guoqing Chang, Jianpeng Liu, Morten Holm Christensen, Andreas Kreisel, Brian Møller Andersen, Wen Huang, Yue Zhao, Philippe Bourges, Yugui Yao, Pengcheng Dai, Jia-Xin Yin
Superconductivity and magnetism are often antagonistic in quantum matter, although their intertwining has long been considered in frustrated-lattice systems. Here we utilize scanning tunnelling microscopy and muon spin resonance to demonstrate time-reversal symmetry-breaking superconductivity in kagome metal Cs(V, Ta)3Sb5, where the Cooper pairing exhibits magnetism and is modulated by it. In the magnetic channel, we observe spontaneous internal magnetism in a fully gapped superconducting state. Under the perturbation of inverse magnetic fields, we detect a time-reversal asymmetrical interference of Bogoliubov quasi-particles at a circular vector. At this vector, the pairing gap spontaneously modulates, which is distinct from pair density waves occurring at a point vector and consistent with the theoretical proposal of an unusual interference effect under time-reversal symmetry breaking. The correlation between internal magnetism, Bogoliubov quasi-particles and pairing modulation provides a chain of experimental indications for time-reversal symmetry-breaking kagome superconductivity.
{"title":"Evidence for time-reversal symmetry-breaking kagome superconductivity","authors":"Hanbin Deng, Guowei Liu, Z. Guguchia, Tianyu Yang, Jinjin Liu, Zhiwei Wang, Yaofeng Xie, Sen Shao, Haiyang Ma, William Liège, Frédéric Bourdarot, Xiao-Yu Yan, Hailang Qin, C. Mielke, R. Khasanov, H. Luetkens, Xianxin Wu, Guoqing Chang, Jianpeng Liu, Morten Holm Christensen, Andreas Kreisel, Brian Møller Andersen, Wen Huang, Yue Zhao, Philippe Bourges, Yugui Yao, Pengcheng Dai, Jia-Xin Yin","doi":"10.1038/s41563-024-01995-w","DOIUrl":"https://doi.org/10.1038/s41563-024-01995-w","url":null,"abstract":"<p>Superconductivity and magnetism are often antagonistic in quantum matter, although their intertwining has long been considered in frustrated-lattice systems. Here we utilize scanning tunnelling microscopy and muon spin resonance to demonstrate time-reversal symmetry-breaking superconductivity in kagome metal Cs(V, Ta)<sub>3</sub>Sb<sub>5</sub>, where the Cooper pairing exhibits magnetism and is modulated by it. In the magnetic channel, we observe spontaneous internal magnetism in a fully gapped superconducting state. Under the perturbation of inverse magnetic fields, we detect a time-reversal asymmetrical interference of Bogoliubov quasi-particles at a circular vector. At this vector, the pairing gap spontaneously modulates, which is distinct from pair density waves occurring at a point vector and consistent with the theoretical proposal of an unusual interference effect under time-reversal symmetry breaking. The correlation between internal magnetism, Bogoliubov quasi-particles and pairing modulation provides a chain of experimental indications for time-reversal symmetry-breaking kagome superconductivity.</p>","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"99 1","pages":""},"PeriodicalIF":41.2,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142085276","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}
Pub Date : 2024-08-27DOI: 10.1038/s41563-024-01987-w
Lina Liu, Yujin Ji, Marco Bianchi, Saban M. Hus, Zheshen Li, Richard Balog, Jill A. Miwa, Philip Hofmann, An-Ping Li, Dmitry Y. Zemlyanov, Youyong Li, Yong P. Chen
Most two-dimensional (2D) materials experimentally studied so far have hexagons as their building blocks. Only a few exceptions, such as PdSe2, are lower in energy in pentagonal phases and exhibit pentagons as building blocks. Although theory has predicted a large number of pentagonal 2D materials, many of these are metastable and their experimental realization is difficult. Here we report the successful synthesis of a metastable pentagonal 2D material, monolayer pentagonal PdTe2, by symmetry-driven epitaxy. Scanning tunnelling microscopy and complementary spectroscopy measurements are used to characterize this material, which demonstrates well-ordered low-symmetry atomic arrangements and is stabilized by lattice matching with the underlying Pd(100) substrate. Theoretical calculations, along with angle-resolved photoemission spectroscopy, reveal monolayer pentagonal PdTe2 to be a semiconductor with an indirect bandgap of 1.05 eV. Our work opens an avenue for the synthesis of pentagon-based 2D materials and gives opportunities to explore their applications such as multifunctional nanoelectronics. A metastable pentagonal PdTe2 monolayer has been synthesized through symmetry-driven epitaxy, utilizing lattice matching with a Pd(100) substrate. The lattices, phonons and electronic structures of this phase have been studied.
迄今为止，实验研究的大多数二维（2D）材料都以六边形为构件。只有 PdSe2 等少数例外，其五边形相的能量较低，并以五角星为构件。虽然理论上已经预言了大量的五边形二维材料，但其中很多都是易变的，而且很难在实验中实现。在此，我们报告了通过对称驱动外延成功合成了一种可蜕变的五边形二维材料--单层五边形 PdTe2。扫描隧穿显微镜和互补光谱测量被用来描述这种材料的特性，它展示了井然有序的低对称原子排列，并通过与底层钯（100）基底的晶格匹配而得到稳定。理论计算和角度分辨光发射光谱显示，单层五边形 PdTe2 是一种间接带隙为 1.05 eV 的半导体。我们的研究为五边形二维材料的合成开辟了一条途径，并为探索它们在多功能纳米电子学等方面的应用提供了机会。
{"title":"A metastable pentagonal 2D material synthesized by symmetry-driven epitaxy","authors":"Lina Liu, Yujin Ji, Marco Bianchi, Saban M. Hus, Zheshen Li, Richard Balog, Jill A. Miwa, Philip Hofmann, An-Ping Li, Dmitry Y. Zemlyanov, Youyong Li, Yong P. Chen","doi":"10.1038/s41563-024-01987-w","DOIUrl":"10.1038/s41563-024-01987-w","url":null,"abstract":"Most two-dimensional (2D) materials experimentally studied so far have hexagons as their building blocks. Only a few exceptions, such as PdSe2, are lower in energy in pentagonal phases and exhibit pentagons as building blocks. Although theory has predicted a large number of pentagonal 2D materials, many of these are metastable and their experimental realization is difficult. Here we report the successful synthesis of a metastable pentagonal 2D material, monolayer pentagonal PdTe2, by symmetry-driven epitaxy. Scanning tunnelling microscopy and complementary spectroscopy measurements are used to characterize this material, which demonstrates well-ordered low-symmetry atomic arrangements and is stabilized by lattice matching with the underlying Pd(100) substrate. Theoretical calculations, along with angle-resolved photoemission spectroscopy, reveal monolayer pentagonal PdTe2 to be a semiconductor with an indirect bandgap of 1.05 eV. Our work opens an avenue for the synthesis of pentagon-based 2D materials and gives opportunities to explore their applications such as multifunctional nanoelectronics. A metastable pentagonal PdTe2 monolayer has been synthesized through symmetry-driven epitaxy, utilizing lattice matching with a Pd(100) substrate. The lattices, phonons and electronic structures of this phase have been studied.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 10","pages":"1339-1346"},"PeriodicalIF":37.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142080956","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}
Pub Date : 2024-08-27DOI: 10.1038/s41563-024-01994-x
A versatile microfluidic approach is used to fabricate microstructures of arbitrarily predefined shapes from CsPbBr3 monocrystals. The resulting perovskite structures demonstrate waveguiding capabilities and edge lasing from polariton condensates with highly coherent emitted light. This approach is a first step towards perovskite-based nonlinear integrated photonics.
{"title":"Perovskite waveguides with predefined shapes for nonlinear photonics","authors":"","doi":"10.1038/s41563-024-01994-x","DOIUrl":"10.1038/s41563-024-01994-x","url":null,"abstract":"A versatile microfluidic approach is used to fabricate microstructures of arbitrarily predefined shapes from CsPbBr3 monocrystals. The resulting perovskite structures demonstrate waveguiding capabilities and edge lasing from polariton condensates with highly coherent emitted light. This approach is a first step towards perovskite-based nonlinear integrated photonics.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 11","pages":"1-2"},"PeriodicalIF":37.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142080957","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}
Pub Date : 2024-08-27DOI: 10.1038/s41563-024-01985-y
Haozhe Yang, Beatriz Martín-García, Jozef Kimák, Eva Schmoranzerová, Eoin Dolan, Zhendong Chi, Marco Gobbi, Petr Němec, Luis E. Hueso, Fèlix Casanova
Twist engineering has emerged as a powerful approach for modulating electronic properties in van der Waals heterostructures. While theoretical works have predicted the modulation of spin texture in graphene-based heterostructures by twist angle, experimental studies are lacking. Here, by performing spin precession experiments, we demonstrate tunability of the spin texture and associated spin–charge interconversion with twist angle in WSe2/graphene heterostructures. For specific twist angles, we detect a spin component radial with the electron’s momentum, in addition to the standard orthogonal component. Our results show that the helicity of the spin texture can be reversed by twist angle, highlighting the critical role of the twist angle in the spin–orbit properties of WSe2/graphene heterostructures and paving the way for the development of spin-twistronic devices. The authors experimentally demonstrate twist-angle modulation of the spin texture in graphene-based heterostructures.
{"title":"Twist-angle-tunable spin texture in WSe2/graphene van der Waals heterostructures","authors":"Haozhe Yang, Beatriz Martín-García, Jozef Kimák, Eva Schmoranzerová, Eoin Dolan, Zhendong Chi, Marco Gobbi, Petr Němec, Luis E. Hueso, Fèlix Casanova","doi":"10.1038/s41563-024-01985-y","DOIUrl":"10.1038/s41563-024-01985-y","url":null,"abstract":"Twist engineering has emerged as a powerful approach for modulating electronic properties in van der Waals heterostructures. While theoretical works have predicted the modulation of spin texture in graphene-based heterostructures by twist angle, experimental studies are lacking. Here, by performing spin precession experiments, we demonstrate tunability of the spin texture and associated spin–charge interconversion with twist angle in WSe2/graphene heterostructures. For specific twist angles, we detect a spin component radial with the electron’s momentum, in addition to the standard orthogonal component. Our results show that the helicity of the spin texture can be reversed by twist angle, highlighting the critical role of the twist angle in the spin–orbit properties of WSe2/graphene heterostructures and paving the way for the development of spin-twistronic devices. The authors experimentally demonstrate twist-angle modulation of the spin texture in graphene-based heterostructures.","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"23 11","pages":"1502-1508"},"PeriodicalIF":37.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142080958","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}
Pub Date : 2024-08-21DOI: 10.1038/s41563-024-01984-z
Yaoyu Wang, Chenqi Yi, Wenxiang Tian, Feng Liu, Gary J. Cheng
Nanoscale three-dimensional (3D) printing of metals and alloys has faced challenges in speed, miniaturization and deficiency in material properties. Traditional nanomanufacturing relies on lithographic methods with material constraints, limited resolution and slow layer-by-layer processing. This work introduces polymer-free techniques using two-photon decomposition and optical force trapping for free-space direct 3D printing of metals, metal oxides and multimetallic alloys with resolutions beyond optical limits. This method involves the two-photon decomposition of metal atoms from precursors, rapid assembly into nanoclusters via optical forces and ultrafast laser sintering, yielding dense, smooth nanostructures. Enhanced near-field optical forces from laser-induced localized surface plasmon resonance facilitate nanocluster aggregation. Our approach eliminates the need for organic materials, layer-by-layer printing and complex post-processing. Printed Mo nanowires show an excellent mechanical performance, closely resembling the behaviour of single crystals, while Mo–Co–W alloy nanowires outperform Mo nanowires. This innovation promises the customizable 3D nanoprinting of high-quality metals and metal oxides, impacting nanoelectronics, nanorobotics and advanced chip manufacturing.
{"title":"Free-space direct nanoscale 3D printing of metals and alloys enabled by two-photon decomposition and ultrafast optical trapping","authors":"Yaoyu Wang, Chenqi Yi, Wenxiang Tian, Feng Liu, Gary J. Cheng","doi":"10.1038/s41563-024-01984-z","DOIUrl":"https://doi.org/10.1038/s41563-024-01984-z","url":null,"abstract":"<p>Nanoscale three-dimensional (3D) printing of metals and alloys has faced challenges in speed, miniaturization and deficiency in material properties. Traditional nanomanufacturing relies on lithographic methods with material constraints, limited resolution and slow layer-by-layer processing. This work introduces polymer-free techniques using two-photon decomposition and optical force trapping for free-space direct 3D printing of metals, metal oxides and multimetallic alloys with resolutions beyond optical limits. This method involves the two-photon decomposition of metal atoms from precursors, rapid assembly into nanoclusters via optical forces and ultrafast laser sintering, yielding dense, smooth nanostructures. Enhanced near-field optical forces from laser-induced localized surface plasmon resonance facilitate nanocluster aggregation. Our approach eliminates the need for organic materials, layer-by-layer printing and complex post-processing. Printed Mo nanowires show an excellent mechanical performance, closely resembling the behaviour of single crystals, while Mo–Co–W alloy nanowires outperform Mo nanowires. This innovation promises the customizable 3D nanoprinting of high-quality metals and metal oxides, impacting nanoelectronics, nanorobotics and advanced chip manufacturing.</p>","PeriodicalId":19058,"journal":{"name":"Nature Materials","volume":"25 1","pages":""},"PeriodicalIF":41.2,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142013825","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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