Nano Research最新文献_第10页

Nanoscale materials transformations revealed by liquid phase TEM 液相 TEM 揭示的纳米级材料转变

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-03 DOI: 10.1007/s12274-024-6885-x

Qiubo Zhang, Daewon Lee, Haimei Zheng

{"title":"Nanoscale materials transformations revealed by liquid phase TEM","authors":"Qiubo Zhang, Daewon Lee, Haimei Zheng","doi":"10.1007/s12274-024-6885-x","DOIUrl":"10.1007/s12274-024-6885-x","url":null,"abstract":"<div>Nanoscale materials often undergo structural, morphological, or chemical changes, especially in solution processes, where heterogeneity and defects may significantly impact the transformation pathways. Liquid phase transmission electron microscopy (TEM), allowing us to track dynamic transformations of individual nanoparticles, has become a powerful platform to reveal nanoscale materials transformation pathways and address challenging issues that are hard to approach by other methods. With the development of modern liquid cells, implementing advanced imaging and image analysis methods, and strategically exploring diverse systems, significant advances have been made in liquid phase TEM, including improved high-resolution imaging through liquids at the atomic level and remarkable capabilities in handling complex systems and reactions. In the past more than a decade, we spent much effort in developing and applying liquid phase TEM to elucidate how atomic level heterogeneity and defects impact various physicochemical processes in liquids, such as growth, self-assembly of nanoparticles, etching/corrosion, electrodeposition of alkali metals, catalyst restructuring during reactions, and so on. This article provides a brief review of the liquid phase TEM study of nanoscale materials transformations, focusing on the growth of nanomaterials with distinct shape/hierarchical structures, such as one-dimensional (1D) growth by nanoparticle attachment, two-dimensional (2D) growth with nanoparticles as intermediates, core-shell structure ripening, solid-liquid interfaces including those in batteries and electrocatalysis, highlighting the impacts of heterogeneity and defects on broad nanoscale transformation pathways.<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 10","pages":"9152 - 9165"},"PeriodicalIF":9.5,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metasurface-assisted low-frequency performance enhancement of ultra-broadband honeycomb absorber based on carbon nanotubes 基于碳纳米管的超宽带蜂窝吸收器的元表面辅助低频性能提升

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-03 DOI: 10.1007/s12274-024-6833-9

Cai-Liang Wang, Shuang Bai, Pei-Yan Zhao, Tao Zhou, Hui-Ya Wang, Jun-Peng Wang, Luo-Xin Wang, Guang-Sheng Wang

{"title":"Metasurface-assisted low-frequency performance enhancement of ultra-broadband honeycomb absorber based on carbon nanotubes","authors":"Cai-Liang Wang, Shuang Bai, Pei-Yan Zhao, Tao Zhou, Hui-Ya Wang, Jun-Peng Wang, Luo-Xin Wang, Guang-Sheng Wang","doi":"10.1007/s12274-024-6833-9","DOIUrl":"https://doi.org/10.1007/s12274-024-6833-9","url":null,"abstract":"Here, we present a unique method to enhance the low-frequency absorption performance of a honeycomb absorber by integrating a metasurface. The geometrical dimensions of the proposed metasurface have been numerically optimized. The introduction of the metasurface allows exploitation of its robust resonance and superior impedance matching in low-frequency bands, thereby improving microwave absorption properties. The incorporation of the metasurface does not impact the wave transmission performance of the honeycomb core absorber at high-frequency band, thus preserving its high-frequency performance. This broadens the absorption range, leading to an expanded bandwidth. Simulation results reveal that the composite absorber (CA) exhibits strong absorption performance with an incident angle stability up to 45° for both transverse electric (TE) and transverse magnetic (TM) modes. The absorption mechanism of the CA has been investigated by using an equivalent circuit model and electromagnetic field analysis. A prototype was designed, fabricated, and tested to validate the proposed method. Both simulation and measurement results demonstrate that the prototype can achieve an average absorption rate exceeding 90% across a 1.0–18.0 GHz range. This study introduces an innovative technique for creating microwave absorbers for low-frequency wideband applications.\u0000","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"43 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Excellent laccase-like activity of melamine modified Cu-NH2-BDC and selective sensing analyses toward phenols and amines 三聚氰胺修饰的 Cu-NH2-BDC 卓越的类似漆酶的活性以及对酚类和胺类的选择性传感分析

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-03 DOI: 10.1007/s12274-024-6888-7

Haimeng Qiao, Hongtian Yang, Yide Han, Yufeng Liu, Ying Zhang, Xia Zhang

{"title":"Excellent laccase-like activity of melamine modified Cu-NH2-BDC and selective sensing analyses toward phenols and amines","authors":"Haimeng Qiao, Hongtian Yang, Yide Han, Yufeng Liu, Ying Zhang, Xia Zhang","doi":"10.1007/s12274-024-6888-7","DOIUrl":"https://doi.org/10.1007/s12274-024-6888-7","url":null,"abstract":"Nanozymes based on metal-organic frameworks (MOFs) have been concentrated on due to their naturally high-disperse metal active sites and the adjustable coordination chemistry. In this work, an N-rich melamine (Mel) was introduced into the Cu-MOF composed of copper(II) nitrate and 2-aminoterephthalic acid (Cu-NH2-BDC-Mel) to mimic the laccase, which enzyme-like activities were assessed and applied in sensing analyses toward several phenols and amines. Compared to unmodified Cu-NH2-BDC, the resulting Cu-NH2-BDC-Mel exhibits enhanced laccase-like activity, superior stability and catalytic kinetics. It is demonstrated that melamine-doping has increased nitrogen content as well as the surface area, as a result, exhibits a lower Michaelis–Menten constant (Km) (0.1877 mM) and higher maximum reaction rate (Vmax) (1.7933 × 10−3 mM·min−1) in comparison with that of natural laccase. Based on that, an efficient colorimetric sensing strategy for several phenols and amines was built up with excellent selectivity and anti-interference by using the laccase-like Cu-NH2-BDC-Mel, the detection limits are 3.51 µM of adrenaline and 4.41 µM of dopamine. The work broadens the prospect development of bio-colorimetric sensing based on the ligand-modified Cu-MOFs nanozymes catalysis.\u0000","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"295 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacterial and cancerous cell membrane fused liposome coordinates with PD-L1 inhibitor for cancer immunotherapy 细菌和癌细胞膜融合脂质体与 PD-L1 抑制剂配合用于癌症免疫疗法

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-03 DOI: 10.1007/s12274-024-6861-5

Xianjin Luo, Chenglong Li, Zhaofei Guo, Hairui Wang, Penghui He, Yuanhao Zhao, Yi Lin, Chunting He, Yingying Hou, Yongshun Zhang, Guangsheng Du

{"title":"Bacterial and cancerous cell membrane fused liposome coordinates with PD-L1 inhibitor for cancer immunotherapy","authors":"Xianjin Luo, Chenglong Li, Zhaofei Guo, Hairui Wang, Penghui He, Yuanhao Zhao, Yi Lin, Chunting He, Yingying Hou, Yongshun Zhang, Guangsheng Du","doi":"10.1007/s12274-024-6861-5","DOIUrl":"https://doi.org/10.1007/s12274-024-6861-5","url":null,"abstract":"Although tumor cell membranes with broad-spectrum antigens have been explored for cancer vaccines for decades, their relatively poor capacity to stimulate immune responses, especially cellular immune responses, has limited their application. Here, we presented a novel bacterial and cancerous cell membrane fusogenic liposome for co-delivering cell membrane-derived antigens and adjuvants. Meanwhile, a programmed death-ligand 1 (PD-L1) inhibitor, JQ-1, was incorporated into the formulation to tackle the up-regulated PD-L1 expression of antigen-presenting cells (APCs) upon vaccination, thereby augmenting its antitumor efficacy. The fusogenic liposomes demonstrated significantly improved cellular uptake by APCs and effectively suppressed PD-L1 expression in bone marrow-derived dendritic cells (BMDCs) in vitro. Following subcutaneous vaccination, the nanovaccines efficiently drained to the tumor-draining lymph nodes (TDLNs), and significantly inhibited PD-L1 expression of both dendritic cells (DCs) and macrophages within the TDLNs and tumors. As a result, the liposomal vaccine induced robust innate and cellular immune responses and inhibited tumor growth in a colorectal carcinoma-burden mouse model. In summary, the fabricated cell membrane-based fusogenic liposomes offer a safe, effective, and easily applicable strategy for tumor immunotherapy and hold potential for personalized cancer immunotherapy.\u0000","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"61 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From “stars” to nano: Porous poly(ethylene glycol) hydrogel films and nanosheets as a versatile platform for sensing and nanofabrication 从 "星 "到纳米：多孔聚（乙二醇）水凝胶薄膜和纳米片是传感和纳米制造的多功能平台

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6881-1

Michael Zharnikov

{"title":"From “stars” to nano: Porous poly(ethylene glycol) hydrogel films and nanosheets as a versatile platform for sensing and nanofabrication","authors":"Michael Zharnikov","doi":"10.1007/s12274-024-6881-1","DOIUrl":"https://doi.org/10.1007/s12274-024-6881-1","url":null,"abstract":"The use of bioinert materials is crucially important for medicine and bioengineering. The most popular systems in this context are oligo- and poly(ethylene glycols) (OEGs and PEGs), applied generally in different forms as bulk materials, thin films, and functional molecular groups. Here, I review the fabrication, properties, and applications of porous hydrogel PEG films (PHFs) and nanosheets (PHNs) formed by thermally activated crosslinking of amino- and epoxy-terminated, star-branched PEG oligomers with variable molecular weight. These systems possess various useful characteristics, including tunable thickness and porosity, hydrogel properties, bioinertness, robustness, and extreme elasticity. They can serve as the basis for composite materials, advanced nanofabrication, and lithography, bioinert supports for high-resolution transmission electron microscopy, susceptible elements in micro-electromechanical systems, and basic building blocks of temperature, humidity, chemical, and biological sensors. Representative examples of the respective applications are provided. Even though these examples span a broad field-from nanoengineering to biosensing, the applications of the PHFs and PHNs are certainly not limited to these cases but can be specifically adapted and extended to other fields, such as tissue engineering and drug delivery, relying on versatility and tunability of these systems.\u0000","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"55 4 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141870866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structurally altered size, composition, shape and interface-dependent optical properties of quantized nanomaterials 量子化纳米材料的尺寸、组成、形状和界面光学特性的结构改变

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6839-3

Neng Qin, Hui Han, Guijian Guan, Ming-Yong Han

{"title":"Structurally altered size, composition, shape and interface-dependent optical properties of quantized nanomaterials","authors":"Neng Qin, Hui Han, Guijian Guan, Ming-Yong Han","doi":"10.1007/s12274-024-6839-3","DOIUrl":"https://doi.org/10.1007/s12274-024-6839-3","url":null,"abstract":"The impact of the size effect on the color and photoluminescence (PL) of quantum dots (QDs) has sparked a revolutionary field of research, culminating in the prestigious Nobel Prize in 2023. Prior to their widespread popularization and large-scale commercialization, it is of paramount importance to effectively manipulate and optimize their optical properties. In this review, we place specific emphasis on the striking correlation between the optical characteristics of QDs and their size, structure, composition, and interface environment. We commence by tracing the evolution of quantum dot technology and subsequently categorizing QDs while outlining their typical synthesis methods. This is followed by a deep dive into the pivotal roles of size, composition, structure, and interfacial ligands in fine-tuning, optimizing, and enhancing the optical properties of QDs. Additionally, we illustrate the luminescence enhancement and charge transfer phenomena stemming from the heterojunction between semiconductor QDs and metal nanomaterials, which contribute to improved performance. Lastly, we introduce the burgeoning field of chiral QDs and their innovative applications. Armed with this knowledge, QDs can be readily tailored to exhibit adjustable luminous characteristics across the entire spectrum, boasting high luminous efficiency through multifaceted regulation. These advancements render QDs even more enticing and promising for a wide array of applications.","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"5 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141870878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrocatalytic coupling of anodic nitrogen oxidation and cathodic nitrate reduction for ammonia synthesis from air and water 阳极氮氧化和阴极硝酸盐还原的电催化耦合，用于从空气和水中合成氨

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6863-3

Aijing Ma, Jianzhou Gui, Yanmei Huang, Yifu Yu

引用次数: 0

Determination of multilevel chirality in nickel molybdate films by electron crystallography 通过电子晶体学确定钼酸镍薄膜的多级手性

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6865-1

Jing Ai, Yu Wang, Liyuan Li, Jianqiang Wang, Te Bai, Shunai Che, Lu Han

引用次数: 0

Lipid nanoparticles deliver mRNA to the blood–brain barrier 将 mRNA 运送到血脑屏障的脂质纳米颗粒

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6827-7

Yanina Kuzminich, Avraham Shakked, Randi Calkins, Sebastian Rudden, Camille Jones, Jessie Doan, Bora Jang, Elisa Schrader Echeverri, Ryan Zenhausern, Liming Lian, David Loughrey, Hannah E. Peck, Rachelle Wiese, Dorothy Koveal, Philip J. Santangelo, James E. Dahlman

{"title":"Lipid nanoparticles deliver mRNA to the blood–brain barrier","authors":"Yanina Kuzminich, Avraham Shakked, Randi Calkins, Sebastian Rudden, Camille Jones, Jessie Doan, Bora Jang, Elisa Schrader Echeverri, Ryan Zenhausern, Liming Lian, David Loughrey, Hannah E. Peck, Rachelle Wiese, Dorothy Koveal, Philip J. Santangelo, James E. Dahlman","doi":"10.1007/s12274-024-6827-7","DOIUrl":"10.1007/s12274-024-6827-7","url":null,"abstract":"<div>Lipid nanoparticles (LNPs) have delivered RNA to hepatocytes in patients after intravenous administration. These clinical data support efforts to design LNPs that transfect cells in the central nervous system (CNS). However, delivery to the CNS has been difficult, in large part because quantifying on-target delivery alongside common off-target cell types in adult mice remains challenging. Here we report methods to isolate different cell types from the CNS, and subsequently present mRNA delivery readouts using a liver-detargeted LNP. These data suggest that LNPs without targeting ligands can transfect cerebral endothelial cells in mice after intravenous administration. Given the difficulty of crossing the blood–brain barrier, they also underscore the value of quantifying delivery in the CNS with cell-type resolution instead of whole-tissue resolution.\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 10","pages":"9126 - 9134"},"PeriodicalIF":9.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141870877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dimensional regulation in gigantic molybdenum blue wheels featuring {(W)Mo5} motifs for enhanced proton conductivity 具有{(W)Mo5}图案的巨型钼蓝轮的尺寸调节可增强质子传导性

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-01 DOI: 10.1007/s12274-024-6868-y

Yu-Lun Wu, Jing Du, Hai-Ying Zhang, Ming-Jun Hou, Qiao-Yue Li, Wei-Chao Chen, Kui-Zhan Shao, Bo Zhu, Chao Qin, Xin-Long Wang, Zhong-Min Su

{"title":"Dimensional regulation in gigantic molybdenum blue wheels featuring {(W)Mo5} motifs for enhanced proton conductivity","authors":"Yu-Lun Wu, Jing Du, Hai-Ying Zhang, Ming-Jun Hou, Qiao-Yue Li, Wei-Chao Chen, Kui-Zhan Shao, Bo Zhu, Chao Qin, Xin-Long Wang, Zhong-Min Su","doi":"10.1007/s12274-024-6868-y","DOIUrl":"10.1007/s12274-024-6868-y","url":null,"abstract":"<div>Dimensional regulation in polyoxometalates is an effective strategy during the design and synthesis of polyoxometalates-based high proton conductors, but it is not available to date. Herein, the precise regulation of dimensionality has been realized in an unprecedented gigantic molybdenum blue wheel family featuring pentagonal {(W)Mo5} motifs through optimizing the molar ratio of Mo/W, including [Gd2Mo124W14O422(H2O)62]38− (0D-{Mo124W14}, 1), [Mo126W14O441(H2O)51]70− (1D-{Mo126W14}n, 2), and [Mo124W14O430(H2O)50]60− (2D-{Mo124W14}n, 3). Such important {(W)Mo5} structural motif brings new reactivity into gigantic Mo blue wheels. There are different numbers and sites of {Mo2} defects in each wheel-shaped monomer in 1–3, which leads to the monomers of 2 and 3 to form 1D and 2D architectures via Mo–O–Mo covalent bonds driven by {Mo2}-mediated H2O ligands substitution process, respectively, thus achieving the controllable dimensional regulation. As expected, the proton conductivity of 3 is 10 times higher than that of 1 and 1.7 times higher than that of 2. The continuous proton hopping sites in 2D network are responsible for the enhanced proton conductivity with lower activation energy. This study highlights that this dimensional regulation approach remains great potential in preparing polyoxometalates-based high proton conductive materials.<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 9","pages":"8261 - 8268"},"PeriodicalIF":9.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141870871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0