Pub Date : 2025-12-06DOI: 10.1021/acs.nanolett.5c04794
Li Song,Yaqiang Chen,Wei Li,Yi Liao,Jinyu Zhu,Linjun Cai,Xiao Xia Han
The truncated BID (tBID) protein is crucially important for apoptosis, and recent studies have shown that it can directly trigger cell death. However, the underlying molecular mechanisms are poorly understood. Herein, we present the molecular details of tBID-phospholipid interactions and their correlations with mitochondrial and lysosomal membrane permeabilization during apoptosis. Using Raman spectroscopy, we find that tBID disrupts the conformational order in alkyl chains by selectively binding to phosphatidylethanolamine, cardiolipin (CL), and phosphatidic acid (PA). Our results reveal that tBID undergoes significant conformational changes upon phospholipid binding, generating a redox center that mediates reactive oxygen species (ROS) formation, which, in turn, induces peroxidation of unsaturated phospholipids. These results unveil the key mechanism underlying tBID-induced membrane permeabilization and cytochrome c release from the mitochondria. This study provides novel insights into how tBID mediates apoptosis through crosstalk between mitochondria and lysosomes and paves the way for the development of novel anticancer treatments.
{"title":"Insights into the Molecular Mechanism Underlying tBID-Triggered Cell Death Probed by In Situ Raman Spectroscopy.","authors":"Li Song,Yaqiang Chen,Wei Li,Yi Liao,Jinyu Zhu,Linjun Cai,Xiao Xia Han","doi":"10.1021/acs.nanolett.5c04794","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04794","url":null,"abstract":"The truncated BID (tBID) protein is crucially important for apoptosis, and recent studies have shown that it can directly trigger cell death. However, the underlying molecular mechanisms are poorly understood. Herein, we present the molecular details of tBID-phospholipid interactions and their correlations with mitochondrial and lysosomal membrane permeabilization during apoptosis. Using Raman spectroscopy, we find that tBID disrupts the conformational order in alkyl chains by selectively binding to phosphatidylethanolamine, cardiolipin (CL), and phosphatidic acid (PA). Our results reveal that tBID undergoes significant conformational changes upon phospholipid binding, generating a redox center that mediates reactive oxygen species (ROS) formation, which, in turn, induces peroxidation of unsaturated phospholipids. These results unveil the key mechanism underlying tBID-induced membrane permeabilization and cytochrome c release from the mitochondria. This study provides novel insights into how tBID mediates apoptosis through crosstalk between mitochondria and lysosomes and paves the way for the development of novel anticancer treatments.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"15 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689024","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}
Maintaining body heat is crucial for comfort and survival, driving the demand for advanced thermal insulation materials. Conventional textiles often require added bulk to achieve adequate insulation, limiting their use in lightweight applications. Herein, we present a novel turbulence-driven orifice-free melt-blowing method using a tailor-made mesh configuration to fabricate highly curved polypropylene (PP) nanofibers on a large scale. These materials offer superior warmth retention performance, surpassing even high-quality goose down alternatives. By precisely regulating the jet-gas interaction, significant fiber refinement and high curliness are achieved simultaneously, yielding fluffy nanofiber networks. The resulting PP garment demonstrates an outstanding thermal insulation value of 0.53 clo mm-1, exceeding that of goose down. Additionally, the synergy of high porosity and tailored wettability ensures excellent breathability and effective moisture management, enhancing the overall thermal comfort. This work highlights the potential of turbulence-assisted fiber engineering in developing ultrafine materials that outperform natural down in thermal comfort.
{"title":"Orifice-Free Melt Blowing of Highly Curved Polypropylene Nanofibers for Superior Warmth Retention.","authors":"Ranxue Yu,Yansong Li,Zekun Cheng,Zhiwen Cui,Ziwei Li,Chong Yang,Lvye Dou,Shanyu Zhao,Lihao Zhao,Hui Wu","doi":"10.1021/acs.nanolett.5c04950","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04950","url":null,"abstract":"Maintaining body heat is crucial for comfort and survival, driving the demand for advanced thermal insulation materials. Conventional textiles often require added bulk to achieve adequate insulation, limiting their use in lightweight applications. Herein, we present a novel turbulence-driven orifice-free melt-blowing method using a tailor-made mesh configuration to fabricate highly curved polypropylene (PP) nanofibers on a large scale. These materials offer superior warmth retention performance, surpassing even high-quality goose down alternatives. By precisely regulating the jet-gas interaction, significant fiber refinement and high curliness are achieved simultaneously, yielding fluffy nanofiber networks. The resulting PP garment demonstrates an outstanding thermal insulation value of 0.53 clo mm-1, exceeding that of goose down. Additionally, the synergy of high porosity and tailored wettability ensures excellent breathability and effective moisture management, enhancing the overall thermal comfort. This work highlights the potential of turbulence-assisted fiber engineering in developing ultrafine materials that outperform natural down in thermal comfort.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674326","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}
Stretchable electronics have garnered significant attention due to their broad applications. However, seeking a trade-off between mechanics and electricity by loading less active material while maintaining multifunctionality and structural stability remains a formidable challenge. Herein, we report a biocompatible, ultrastretchable (3000%), and superconductive (128,975 S/m) composite nanofibrous helix with a periodic alternating structure, fabricated via electrospinning and gradual biscroll winding technology unlike before. The synergistic effect of elastic PU and spring-like structure endows the composite nanofibrous helix with high stretchability. Meanwhile, the liquid metal is stably coiled and locked in the nanofibrous helix, ensuring a continuous conductive pathway. By optimizing the construction pattern and composition content, we engineered light monitoring electronics with a wide working range using the as-prepared nanofibrous helix as a highly stretchable and stable conductor. This versatile and low-cost strategy advances the development of and provides new ideas for structure-function integrated electronics.
{"title":"A Periodic Alternating Nanofibrous Helix Enabling Light Monitoring Electronics of Wide Working Range.","authors":"Minhui Chen,Rongman Gao,Yan Wang,Zuxian Zhang,Jie Xiong,Yong Zhao,Fengyun Guo","doi":"10.1021/acs.nanolett.5c04645","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04645","url":null,"abstract":"Stretchable electronics have garnered significant attention due to their broad applications. However, seeking a trade-off between mechanics and electricity by loading less active material while maintaining multifunctionality and structural stability remains a formidable challenge. Herein, we report a biocompatible, ultrastretchable (3000%), and superconductive (128,975 S/m) composite nanofibrous helix with a periodic alternating structure, fabricated via electrospinning and gradual biscroll winding technology unlike before. The synergistic effect of elastic PU and spring-like structure endows the composite nanofibrous helix with high stretchability. Meanwhile, the liquid metal is stably coiled and locked in the nanofibrous helix, ensuring a continuous conductive pathway. By optimizing the construction pattern and composition content, we engineered light monitoring electronics with a wide working range using the as-prepared nanofibrous helix as a highly stretchable and stable conductor. This versatile and low-cost strategy advances the development of and provides new ideas for structure-function integrated electronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"138 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680578","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 : 2025-12-05DOI: 10.1021/acs.nanolett.5c05198
Wenjie Ming,Cong Liu,Boyuan Huang,Jiangyu Li
CuInP2S6 (CIPS), a van der Waals ferroelectric, features a unique four-well energy landscape and strong polarization-ion coupling. However, its polarization switching pathways remain unclear, impeding access to metastable states for multistate memory. By employing switching spectroscopy piezoresponse force microscopy (SS-PFM) and novel 3D domain mapping, we identify three unconventional switching pathways alongside a classical one. These originate from combinations of three fundamental Cu-ion switching modes, modulated by the driving voltage. We reveal Cu-ion transformations among intralayer stable sites, interlayer metastable sites, and interlayer displacement and elucidate a dual alteration mechanism involving both polarization direction and piezoelectric coefficient sign. These insights enable deterministic, repeatable, and reversible access to all four energy wells via precise electric bias control, thereby overcoming a key barrier to practical multistate CIPS applications.
{"title":"Accessing Uniaxial Four-Well Landscape of CuInP2S6 via Unconventional Polarization Switching Pathways.","authors":"Wenjie Ming,Cong Liu,Boyuan Huang,Jiangyu Li","doi":"10.1021/acs.nanolett.5c05198","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c05198","url":null,"abstract":"CuInP2S6 (CIPS), a van der Waals ferroelectric, features a unique four-well energy landscape and strong polarization-ion coupling. However, its polarization switching pathways remain unclear, impeding access to metastable states for multistate memory. By employing switching spectroscopy piezoresponse force microscopy (SS-PFM) and novel 3D domain mapping, we identify three unconventional switching pathways alongside a classical one. These originate from combinations of three fundamental Cu-ion switching modes, modulated by the driving voltage. We reveal Cu-ion transformations among intralayer stable sites, interlayer metastable sites, and interlayer displacement and elucidate a dual alteration mechanism involving both polarization direction and piezoelectric coefficient sign. These insights enable deterministic, repeatable, and reversible access to all four energy wells via precise electric bias control, thereby overcoming a key barrier to practical multistate CIPS applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"37 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674327","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}
Silicon has emerged as a premier candidate for next-generation lithium-ion battery anodes. Nevertheless, the low initial Coulombic efficiency (ICE) hinders its commercialization. The mainstream view is that the continuous growth of the solid electrolyte interphase (SEI) on the silicon surface depletes the lithium inventory. In this work, a new mechanism is proposed that the SEI strips off the interphase with silicon as the silicon shrinks during discharge, which is the origin of the low ICE. A mathematical model is developed to describe this phenomenon, and the results demonstrate the ICE of 62%. Based on these findings, an external pressure inhibition mechanism of the interphase stripping is proposed, which can realize a 14% improvement. As a proof-of-concept, a capacity utilization improvement of 63% is also achieved under proper external pressure. This mechanistic and pressure modulation strategy establish a paradigm-shifting approach to overcome the limitations of silicon anodes.
{"title":"Decoding the Intrinsic Link Between Interphase Stripping and Low Initial Coulombic Efficiency of Silicon Anodes in Li-Ion Batteries","authors":"Junjie Ding, Lili Gong, Qi Lin, Jiangfeng Huang, Xueyan Li, Peng Tan","doi":"10.1021/acs.nanolett.5c04643","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04643","url":null,"abstract":"Silicon has emerged as a premier candidate for next-generation lithium-ion battery anodes. Nevertheless, the low initial Coulombic efficiency (ICE) hinders its commercialization. The mainstream view is that the continuous growth of the solid electrolyte interphase (SEI) on the silicon surface depletes the lithium inventory. In this work, a new mechanism is proposed that the SEI strips off the interphase with silicon as the silicon shrinks during discharge, which is the origin of the low ICE. A mathematical model is developed to describe this phenomenon, and the results demonstrate the ICE of 62%. Based on these findings, an external pressure inhibition mechanism of the interphase stripping is proposed, which can realize a 14% improvement. As a proof-of-concept, a capacity utilization improvement of 63% is also achieved under proper external pressure. This mechanistic and pressure modulation strategy establish a paradigm-shifting approach to overcome the limitations of silicon anodes.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"30 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674560","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 : 2025-12-05DOI: 10.1021/acs.nanolett.5c05085
Shuang Wu,Yu-Fei Liu,Sun Yong Kwon,Ting Yong Lim,Sinchul Yeom,Anyuan Gao,Houchen Li,Raymond R Unocic,Alina Mary Varghese,Edgar Lopez-Torres,Kai Xiao,Tay-Rong Chang,Mina Yoon,Su-Yang Xu,Xufan Li
The Td phase of tungsten ditelluride (WTe2), a noncentrosymmetric transition metal dichalcogenide, hosts rich correlated phenomena, topological states, and nonlinear transport responses. However, the scalable synthesis of high-quality few-layer WTe2 with precise layer control remains challenging. Here, we report a water-assisted chemical vapor deposition approach that deterministically grows monolayer to trilayer Td-WTe2 with controlled flake size and density. Moisture-mediated precursor liquefaction through salt-assisted intermediates enables vapor-liquid-solid growth and tunable layer numbers through a concerted layer growth mode. Transport studies reveal that trilayer WTe2 exhibits a nonlinear Hall effect susceptibility of 1.1 μm·V-1 at 10 K and 0.5 μm·V-1 at 50 K, nearly an order of magnitude higher than that in bilayers, consistent with the calculated Berry curvature dipole enhancement. Layer-dependent microwave rectification further highlights the influence of topological band structure and interlayer coupling. These results establish layer-engineered Td-WTe2 as a promising platform for nonlinear quantum transport and high-frequency optoelectronic applications.
{"title":"Water-Assisted Concerted Layer Growth of Td-Phase WTe2 for Nonlinear Hall Effect and Microwave Rectification.","authors":"Shuang Wu,Yu-Fei Liu,Sun Yong Kwon,Ting Yong Lim,Sinchul Yeom,Anyuan Gao,Houchen Li,Raymond R Unocic,Alina Mary Varghese,Edgar Lopez-Torres,Kai Xiao,Tay-Rong Chang,Mina Yoon,Su-Yang Xu,Xufan Li","doi":"10.1021/acs.nanolett.5c05085","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c05085","url":null,"abstract":"The Td phase of tungsten ditelluride (WTe2), a noncentrosymmetric transition metal dichalcogenide, hosts rich correlated phenomena, topological states, and nonlinear transport responses. However, the scalable synthesis of high-quality few-layer WTe2 with precise layer control remains challenging. Here, we report a water-assisted chemical vapor deposition approach that deterministically grows monolayer to trilayer Td-WTe2 with controlled flake size and density. Moisture-mediated precursor liquefaction through salt-assisted intermediates enables vapor-liquid-solid growth and tunable layer numbers through a concerted layer growth mode. Transport studies reveal that trilayer WTe2 exhibits a nonlinear Hall effect susceptibility of 1.1 μm·V-1 at 10 K and 0.5 μm·V-1 at 50 K, nearly an order of magnitude higher than that in bilayers, consistent with the calculated Berry curvature dipole enhancement. Layer-dependent microwave rectification further highlights the influence of topological band structure and interlayer coupling. These results establish layer-engineered Td-WTe2 as a promising platform for nonlinear quantum transport and high-frequency optoelectronic applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"372 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674328","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 : 2025-12-04DOI: 10.1021/acs.nanolett.5c04983
Yifan Wang, Jiahui Bi, Nikolai Kuznetsov, Lukáš Flajšman, Sebastiaan van Dijken, Huajun Qin
Active control of low-loss spin-wave propagation at the nanoscale is crucial for energy-efficient magnonic computing. Here, we demonstrate the precise manipulation of spin-wave transport in hybrid waveguides, comprising continuous YIG films overlaid with patterned ferromagnetic metal nanostripes. Our designs enable field-tunable filtering, controllable splitting, and selective 90° redirection of spin waves. Using super-Nyquist sampling magneto-optical Kerr effect (SNS-MOKE) microscopy, corroborated by micromagnetic simulations, we show that spin-wave pathways can be programmed via engineered magnetic field landscapes in the YIG film. Moreover, aligning the magnetization to the diagonal of a cross-shaped waveguide network results in multiple 90° spin-wave redirections with low loss on the nanoscale. This versatile and straightforward approach provides a scalable route to compact, coherent, and reconfigurable magnonic networks, paving the way for integrated wave-based information processing.
{"title":"Programmable Hybrid Magnonic Waveguides for Spin-Wave Filtering and 90° Redirection","authors":"Yifan Wang, Jiahui Bi, Nikolai Kuznetsov, Lukáš Flajšman, Sebastiaan van Dijken, Huajun Qin","doi":"10.1021/acs.nanolett.5c04983","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04983","url":null,"abstract":"Active control of low-loss spin-wave propagation at the nanoscale is crucial for energy-efficient magnonic computing. Here, we demonstrate the precise manipulation of spin-wave transport in hybrid waveguides, comprising continuous YIG films overlaid with patterned ferromagnetic metal nanostripes. Our designs enable field-tunable filtering, controllable splitting, and selective 90° redirection of spin waves. Using super-Nyquist sampling magneto-optical Kerr effect (SNS-MOKE) microscopy, corroborated by micromagnetic simulations, we show that spin-wave pathways can be programmed via engineered magnetic field landscapes in the YIG film. Moreover, aligning the magnetization to the diagonal of a cross-shaped waveguide network results in multiple 90° spin-wave redirections with low loss on the nanoscale. This versatile and straightforward approach provides a scalable route to compact, coherent, and reconfigurable magnonic networks, paving the way for integrated wave-based information processing.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"20 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674564","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}
Traditional computing systems are limited by separated architectures, inspiring the development of compatible artificial neuron and synaptic devices for hybrid neuromorphic computing. Here, we present a CMOS-compatible, single-stack Hf0.2Zr0.8O2 (HZO) platform in which the as-deposited film serves as a memristive synapse, while a one-step postdeposition anneal yields an antiferroelectric (AFE) neuron device. Both device roles share identical CMOS-compatible premanufacturing steps; a single, nonreversible postanneal diverges the same TiN/HZO/TiN stack into the AFE-neuron path. A memristive device enables analogue conductance modulation for convolutional feature extraction. After annealing, antiferroelectric devices achieve spontaneous depolarization behavior, paving the way for spike-based encoding and biologically plausible neuronal dynamics. By integrating this process-compatible dual-mode device set within a unified material platform, a convolutional spiking neural network was constructed with 97.9% accuracy in dynamic gestures. This work highlights CMOS compatible neuromorphic electronics for hybrid neuromorphic computing within compact neuromorphic hardware.
{"title":"One-Step Annealing-Configured Hf0.2Zr0.8O2 Memristive-Antiferroelectric Devices for Bioinspired CSNN Neuromorphic Computing.","authors":"Jinhao Zhang,Kangli Xu,Chen Lu,Lin Lu,Qingxin Chen,Zhigang Li,Yongkai Liu,Jiajie Yu,Jialin Meng,Qingqing Sun,David Wei Zhang,Tianyu Wang,Lin Chen","doi":"10.1021/acs.nanolett.5c04249","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04249","url":null,"abstract":"Traditional computing systems are limited by separated architectures, inspiring the development of compatible artificial neuron and synaptic devices for hybrid neuromorphic computing. Here, we present a CMOS-compatible, single-stack Hf0.2Zr0.8O2 (HZO) platform in which the as-deposited film serves as a memristive synapse, while a one-step postdeposition anneal yields an antiferroelectric (AFE) neuron device. Both device roles share identical CMOS-compatible premanufacturing steps; a single, nonreversible postanneal diverges the same TiN/HZO/TiN stack into the AFE-neuron path. A memristive device enables analogue conductance modulation for convolutional feature extraction. After annealing, antiferroelectric devices achieve spontaneous depolarization behavior, paving the way for spike-based encoding and biologically plausible neuronal dynamics. By integrating this process-compatible dual-mode device set within a unified material platform, a convolutional spiking neural network was constructed with 97.9% accuracy in dynamic gestures. This work highlights CMOS compatible neuromorphic electronics for hybrid neuromorphic computing within compact neuromorphic hardware.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"168 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145664201","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}
Two-dimensional (2D) chiral systems are highly attractive for applications in enantioselective catalysis, spin-polarized optoelectronics, and quantum information technologies, yet they are challenging in controllable and scalable synthesis. Here, we demonstrate the epitaxial growth of 2D chiral cobalt telluride (CoTe2) on an achiral Au(111) substrate, using molecular beam epitaxy corroborated by scanning tunneling microscopy and density functional theory calculations. Initial Te deposition results in the formation of an Au2Te buffer layer, which guides the generation of CoTe2 linear chain intermediates upon Co addition. Subsequent Te exposure transforms these chains into a defective 1T-CoTe2 monolayer, where Te vacancies arrange into a chiral pinwheel superlattice. Further Te deposition heals the defects and yields a complete 1T-CoTe2 monolayer exhibiting spiral patterns with chirality. This work reveals a strain-mediated mechanism governing chiral pattern formation and establishes a scalable pathway for creating chiral 2D materials with tailored architectures.
{"title":"Synthesizing Two-Dimensional Chiral Cobalt Telluride through a Predesigned Buffer Layer","authors":"Tianchao Niu, Pengfei Yu, Wenjin Gao, Yinuo Zhu, Chenqiang Hua, Miao Zhou","doi":"10.1021/acs.nanolett.5c04678","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04678","url":null,"abstract":"Two-dimensional (2D) chiral systems are highly attractive for applications in enantioselective catalysis, spin-polarized optoelectronics, and quantum information technologies, yet they are challenging in controllable and scalable synthesis. Here, we demonstrate the epitaxial growth of 2D chiral cobalt telluride (CoTe<sub>2</sub>) on an achiral Au(111) substrate, using molecular beam epitaxy corroborated by scanning tunneling microscopy and density functional theory calculations. Initial Te deposition results in the formation of an Au<sub>2</sub>Te buffer layer, which guides the generation of CoTe<sub>2</sub> linear chain intermediates upon Co addition. Subsequent Te exposure transforms these chains into a defective 1T-CoTe<sub>2</sub> monolayer, where Te vacancies arrange into a chiral pinwheel superlattice. Further Te deposition heals the defects and yields a complete 1T-CoTe<sub>2</sub> monolayer exhibiting spiral patterns with chirality. This work reveals a strain-mediated mechanism governing chiral pattern formation and establishes a scalable pathway for creating chiral 2D materials with tailored architectures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"8 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674562","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 : 2025-12-04DOI: 10.1021/acs.nanolett.5c04750
Jiandong Zhang, Zhaoshi Yu, Muqin Wang, Pengkun Gao, Yali Zhang, Yan Shen, Mingkui Wang
The NASICON-type Na3MnTi(PO4)3 is a promising sodium-ion battery cathode material due to its considerable theoretical specific capacity. However, its practical implementation is hindered by inferior kinetics and a stepwise phase transition. Here, we show a multi-d-electron approach for synthesizing a novel NASICON-type material, Na3.5V0.5Mn0.5Cr0.5Ti0.5(PO4)3, with a delocalized electron system that facilitates electrochemical kinetics and a stable single-phase reaction mechanism with minimal volume change (1.8%). This effectively breaks the performance trade-off among high-rate capability (98.9 mAh g–1 at 40 C), long-term cycling (88.3% after 10,000 cycles at 40 C), and operation over a temperature range of −40 to 50 °C. Importantly, the pouch-type full cell demonstrates its practical feasibility by achieving 85.2% capacity retention after 500 cycles. This study sheds new light on delocalized electron-driven reaction dynamics and the modulation of phase transitions to realize a high-performance NASICON cathode for sodium-ion batteries.
nasicon型Na3MnTi(PO4)3具有相当大的理论比容量，是一种很有前途的钠离子电池正极材料。然而，它的实际实施受到较差的动力学和逐步相变的阻碍。在这里，我们展示了一种多电子合成新型nasicon型材料Na3.5V0.5Mn0.5Cr0.5Ti0.5(PO4)3的方法，该方法具有利于电化学动力学的离域电子系统和稳定的单相反应机理，且体积变化最小（1.8%）。这有效地打破了高倍率性能（40℃下98.9 mAh g-1）、长期循环（40℃下10,000次循环后88.3%）以及在- 40至50℃温度范围内工作的性能权衡。重要的是，袋式全电池在500次循环后容量保持率达到85.2%，证明了其实际可行性。该研究为实现高性能钠离子电池用NASICON阴极提供了离域电子驱动反应动力学和相变调制的新思路。
{"title":"Delocalized Electron System Enables Stable NASICON Cathode for Sodium-Ion Batteries","authors":"Jiandong Zhang, Zhaoshi Yu, Muqin Wang, Pengkun Gao, Yali Zhang, Yan Shen, Mingkui Wang","doi":"10.1021/acs.nanolett.5c04750","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04750","url":null,"abstract":"The NASICON-type Na<sub>3</sub>MnTi(PO<sub>4</sub>)<sub>3</sub> is a promising sodium-ion battery cathode material due to its considerable theoretical specific capacity. However, its practical implementation is hindered by inferior kinetics and a stepwise phase transition. Here, we show a multi-<i>d</i>-electron approach for synthesizing a novel NASICON-type material, Na<sub>3.5</sub>V<sub>0.5</sub>Mn<sub>0.5</sub>Cr<sub>0.5</sub>Ti<sub>0.5</sub>(PO<sub>4</sub>)<sub>3</sub>, with a delocalized electron system that facilitates electrochemical kinetics and a stable single-phase reaction mechanism with minimal volume change (1.8%). This effectively breaks the performance trade-off among high-rate capability (98.9 mAh g<sup>–1</sup> at 40 C), long-term cycling (88.3% after 10,000 cycles at 40 C), and operation over a temperature range of −40 to 50 °C. Importantly, the pouch-type full cell demonstrates its practical feasibility by achieving 85.2% capacity retention after 500 cycles. This study sheds new light on delocalized electron-driven reaction dynamics and the modulation of phase transitions to realize a high-performance NASICON cathode for sodium-ion batteries.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"34 2 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665095","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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