Nature nanotechnology最新文献_第3页

Blue lasers using low-toxicity colloidal quantum dots 使用低毒胶体量子点的蓝光激光器

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-11-01 DOI: 10.1038/s41565-024-01812-0

Xuyang Lin, Yang Yang, Xueyang Li, Yongshun Lv, Zhaolong Wang, Jun Du, Xiaohan Luo, Dongjian Zhou, Chunlei Xiao, Kaifeng Wu

{"title":"Blue lasers using low-toxicity colloidal quantum dots","authors":"Xuyang Lin, Yang Yang, Xueyang Li, Yongshun Lv, Zhaolong Wang, Jun Du, Xiaohan Luo, Dongjian Zhou, Chunlei Xiao, Kaifeng Wu","doi":"10.1038/s41565-024-01812-0","DOIUrl":"https://doi.org/10.1038/s41565-024-01812-0","url":null,"abstract":"Blue lasers play a pivotal role in laser-based display, printing, manufacturing, data recording and medical technologies. Colloidal quantum dots (QDs) are solution-grown materials with strong, tunable emission covering the whole visible spectrum, but the development of QD lasers has largely relied on Cd-containing red-emitting QDs, with technologically viable blue QD lasers remaining out of reach. Here we report on the realization of tunable and robust lasing using low-toxicity blue-emitting ZnSe–ZnS core–shell QDs that are compact in size yet still feature suppressed Auger recombination and long optical gain lifetime approaching 1 ns. These characteristics allow us to handle the blue QDs like laser dyes for liquid-state amplified spontaneous emission and lasing. The blue QD laser is operated under quasi-continuous-wave excitation by solid-state nanosecond lasers. A Littrow-configuration cavity enables narrow linewidth (<0.2 nm), wavelength-tunable, coherent and stable laser outputs without circulating the solution. These results indicate the promise of ZnSe–ZnS QDs to fill the ‘blue gap’ of QD lasers and to replace less stable blue laser dyes for a multitude of applications.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"39 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561759","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

Universal control of four singlet–triplet qubits 对四个单三重子量子比特的通用控制

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-31 DOI: 10.1038/s41565-024-01817-9

Xin Zhang, Elizaveta Morozova, Maximilian Rimbach-Russ, Daniel Jirovec, Tzu-Kan Hsiao, Pablo Cova Fariña, Chien-An Wang, Stefan D. Oosterhout, Amir Sammak, Giordano Scappucci, Menno Veldhorst, Lieven M. K. Vandersypen

{"title":"Universal control of four singlet–triplet qubits","authors":"Xin Zhang, Elizaveta Morozova, Maximilian Rimbach-Russ, Daniel Jirovec, Tzu-Kan Hsiao, Pablo Cova Fariña, Chien-An Wang, Stefan D. Oosterhout, Amir Sammak, Giordano Scappucci, Menno Veldhorst, Lieven M. K. Vandersypen","doi":"10.1038/s41565-024-01817-9","DOIUrl":"https://doi.org/10.1038/s41565-024-01817-9","url":null,"abstract":"The coherent control of interacting spins in semiconductor quantum dots is of strong interest for quantum information processing and for studying quantum magnetism from the bottom up. Here we present a 2 × 4 germanium quantum dot array with full and controllable interactions between nearest-neighbour spins. As a demonstration of the level of control, we define four singlet–triplet qubits in this system and show two-axis single-qubit control of each qubit and SWAP-style two-qubit gates between all neighbouring qubit pairs, yielding average single-qubit gate fidelities of 99.49(8)–99.84(1)% and Bell state fidelities of 73(1)–90(1)%. Combining these operations, we experimentally implement a circuit designed to generate and distribute entanglement across the array. A remote Bell state with a fidelity of 75(2)% and concurrence of 22(4)% is achieved. These results highlight the potential of singlet–triplet qubits as a competing platform for quantum computing and indicate that scaling up the control of quantum dot spins in extended bilinear arrays can be feasible.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"239 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556261","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

Harnessing extracellular vesicle heterogeneity for diagnostic and therapeutic applications 利用细胞外囊泡的异质性开展诊断和治疗应用

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01774-3

Randy P. Carney, Rachel R. Mizenko, Batuhan T. Bozkurt, Neona Lowe, Tanner Henson, Alessandra Arizzi, Aijun Wang, Cheemeng Tan, Steven C. George

{"title":"Harnessing extracellular vesicle heterogeneity for diagnostic and therapeutic applications","authors":"Randy P. Carney, Rachel R. Mizenko, Batuhan T. Bozkurt, Neona Lowe, Tanner Henson, Alessandra Arizzi, Aijun Wang, Cheemeng Tan, Steven C. George","doi":"10.1038/s41565-024-01774-3","DOIUrl":"https://doi.org/10.1038/s41565-024-01774-3","url":null,"abstract":"Extracellular vesicles (EVs) are diverse nanoparticles with large heterogeneity in size and molecular composition. Although this heterogeneity provides high diagnostic value for liquid biopsy and confers many exploitable functions for therapeutic applications in cancer detection, wound healing and neurodegenerative and cardiovascular diseases, it has also impeded their clinical translation—hence heterogeneity acts as a double-edged sword. Here we review the impact of subpopulation heterogeneity on EV function and identify key cornerstones for addressing heterogeneity in the context of modern analytical platforms with single-particle resolution. We outline concrete steps towards the identification of key active biomolecules that determine EV mechanisms of action across different EV subtypes. We describe how such knowledge could accelerate EV-based therapies and engineering approaches for mimetic artificial nanovesicle formulations. This approach blunts one edge of the sword, leaving only a single razor-sharp edge on which EV heterogeneity can be exploited for therapeutic applications across many diseases.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"11 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519218","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

Tunable topological phases in nanographene-based spin-1/2 alternating-exchange Heisenberg chains 纳米石墨烯基自旋-1/2 交替交换海森堡链中的可调谐拓扑相位

IF 38.1 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01805-z

Chenxiao Zhao, Gonçalo Catarina, Jin-Jiang Zhang, João C. G. Henriques, Lin Yang, Ji Ma, Xinliang Feng, Oliver Gröning, Pascal Ruffieux, Joaquín Fernández-Rossier, Roman Fasel

{"title":"Tunable topological phases in nanographene-based spin-1/2 alternating-exchange Heisenberg chains","authors":"Chenxiao Zhao, Gonçalo Catarina, Jin-Jiang Zhang, João C. G. Henriques, Lin Yang, Ji Ma, Xinliang Feng, Oliver Gröning, Pascal Ruffieux, Joaquín Fernández-Rossier, Roman Fasel","doi":"10.1038/s41565-024-01805-z","DOIUrl":"10.1038/s41565-024-01805-z","url":null,"abstract":"Unlocking the potential of topological order in many-body spin systems has been a key goal in quantum materials research. Despite extensive efforts, the quest for a versatile platform enabling site-selective spin manipulation, essential for tuning and probing diverse topological phases, has persisted. Here we utilize on-surface synthesis to construct spin-1/2 alternating-exchange Heisenberg chains by covalently linking Clar’s goblets—nanographenes each hosting two antiferromagnetically coupled spins. Using scanning tunnelling microscopy, we exert atomic-scale control over chain lengths, parities and exchange-coupling terminations, and probe their magnetic response via inelastic tunnelling spectroscopy. Our investigation confirms the gapped nature of bulk excitations in the chains, known as triplons. Their dispersion relation is extracted from the spatial variation of tunnelling spectral amplitudes. Depending on the parity and termination of chains, we observe varying numbers of in-gap spin-1/2 edge excitations, reflecting the degeneracy of distinct topological ground states in the thermodynamic limit. By monitoring interactions between these edge spins, we identify the exponential decay of spin correlations. Our findings present a phase-controlled many-body platform, opening avenues toward spin-based quantum devices. Scanning probe microscopy experiments realize the alternating-exchange spin-1/2 Heisenberg model via magnetic nanographene chains. They control odd- to even-Haldane phase transitions and monitor spin–spin correlations and triplon dispersion.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"19 12","pages":"1789-1795"},"PeriodicalIF":38.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519220","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

NIR-II scattering gold superclusters for intravascular optical coherence tomography molecular imaging 用于血管内光学相干断层扫描分子成像的近红外-II 散射金超簇

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01802-2

Nicholas D. Calvert, Joshua Baxter, Aidan A. Torrens, Jesse Thompson, Alexia Kirby, Jaspreet Walia, Spyridon Ntais, Eva Hemmer, Pierre Berini, Benjamin Hibbert, Lora Ramunno, Adam J. Shuhendler

{"title":"NIR-II scattering gold superclusters for intravascular optical coherence tomography molecular imaging","authors":"Nicholas D. Calvert, Joshua Baxter, Aidan A. Torrens, Jesse Thompson, Alexia Kirby, Jaspreet Walia, Spyridon Ntais, Eva Hemmer, Pierre Berini, Benjamin Hibbert, Lora Ramunno, Adam J. Shuhendler","doi":"10.1038/s41565-024-01802-2","DOIUrl":"https://doi.org/10.1038/s41565-024-01802-2","url":null,"abstract":"Currently, intravascular optical coherence tomography (IV-OCT) is limited to anatomical imaging, providing structural information about atherosclerotic plaque morphology, thrombus and dissection. Earlier detection and risk stratification would be possible through molecular characterization of endothelium but necessitates a purpose-engineered IV-OCT contrast agent. Here we developed gold superclusters (AuSCs) tailored to clinical instrumentation and integrated into clinically relevant workflows. AuSCs are aqueously dispersible clusters of closely packed small gold nanoparticles, affording plasmon hybridization to maximize light scattering at the IV-OCT laser line (~1,350 nm). A polymer coating fosters AuSC uniformity and provides a functionalizable handle, which we targeted to intravascular P-selectin, an early vascular endothelial marker of inflammation. In a rat model of intravascular inflammation, P-selectin-targeted AuSC facilitated IV-OCT molecular imaging, where the strength of the signal correlates with the severity of vascular inflammation.","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"49 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519223","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

Targeted protein degradation via cellular trafficking of nanoparticles 通过纳米粒子的细胞贩运实现有针对性的蛋白质降解

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01801-3

Yang Liu, Runhan Liu, Jiawei Dong, Xue Xia, Haoying Yang, Sijun Wei, Linlin Fan, Mengke Fang, Yan Zou, Meng Zheng, Kam W. Leong, Bingyang Shi

引用次数: 0

Unravelling topological states in quantum spin chains 揭示量子自旋链中的拓扑状态

IF 38.1 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01806-y

Deung-Jang Choi, Dario Bercioux

引用次数: 0

Filamentous phages as tumour-targeting immunotherapeutic bionanofibres 丝状噬菌体作为肿瘤靶向免疫治疗仿生纤维

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01800-4

Hui Yue, Yan Li, Tao Yang, Yecheng Wang, Qing Bao, Yajing Xu, Xiangyu Liu, Yao Miao, Mingying Yang, Chuanbin Mao

引用次数: 0

Self-cleaning electrode for stable synthesis of alkaline-earth metal peroxides 用于稳定合成碱土金属过氧化物的自清洁电极

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01815-x

Minli Wang, Jinhuan Cheng, Wenwen Xu, Dandan Zhu, Wuyong Zhang, Yingjie Wen, Wanbing Guan, Jinping Jia, Zhiyi Lu

{"title":"Self-cleaning electrode for stable synthesis of alkaline-earth metal peroxides","authors":"Minli Wang, Jinhuan Cheng, Wenwen Xu, Dandan Zhu, Wuyong Zhang, Yingjie Wen, Wanbing Guan, Jinping Jia, Zhiyi Lu","doi":"10.1038/s41565-024-01815-x","DOIUrl":"https://doi.org/10.1038/s41565-024-01815-x","url":null,"abstract":"Alkaline-earth metal peroxides (MO2, M = Ca, Sr, Ba) represent a category of versatile and clean solid oxidizers, while the synthesis process usually consumes excessive hydrogen peroxide (H2O2). Here we discover that H2O2 synthesized via two-electron electrochemical oxygen reduction (2e− ORR) on the electrode surface can be efficiently and durably consumed to produce high-purity MO2 in an alkaline environment. The crucial factor lies in the in-time detachment of in situ-generated MO2 from the self-cleaning electrode, where the solid products spontaneously detach from the electrode to solve the block issue. The self-cleaning electrode is achieved by constructing micro-/nanostructure of a highly active catalyst with appropriate surface modification. In experiments, an unprecedented accumulated selectivity (~99%) and durability (>1,000 h, 50 mA cm−2) are achieved for electrochemical synthesis of MO2. Moreover, the comparability of CaO2 and H2O2 for tetracycline degradation with hydrodynamic cavitation is validated in terms of their close efficacies (degradation efficiency of 87.9% and 93.6% for H2O2 and CaO2, respectively).","PeriodicalId":18915,"journal":{"name":"Nature nanotechnology","volume":"35 1","pages":""},"PeriodicalIF":38.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519225","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

Small structural changes in siloxane-based lipidoids improve tissue-specific mRNA delivery 硅氧烷类脂质的微小结构变化可改善组织特异性 mRNA 递送

IF 38.3 1区材料科学

Nature nanotechnology Pub Date : 2024-10-28 DOI: 10.1038/s41565-024-01748-5

引用次数: 0