Nanomaterials最新文献_第3页

Cavity-Induced Optical Nonreciprocity Based on Degenerate Two-Level Atoms 基于退化两级原子的腔诱导光学非互易性

Nanomaterials Pub Date : 2024-07-23 DOI: 10.3390/nano14151236

Chuan-Zhao Qi, Jia-Rui Zheng, Yuan-Hang Tong, Ruo-Nan Li, Dan Wang, Liang-Hui Huang, Hai-Tao Zhou

引用次数: 0

Optimized Ammonia-Sensing Electrode with CeO2/rGO Nano-Composite Coating Synthesized by Focused Laser Ablation in Liquid 通过液态聚焦激光烧蚀技术合成的具有 CeO2/rGO 纳米复合涂层的优化氨传感电极

Nanomaterials Pub Date : 2024-07-23 DOI: 10.3390/nano14151238

Mengqi Shi, Hiroyuki Wada

{"title":"Optimized Ammonia-Sensing Electrode with CeO2/rGO Nano-Composite Coating Synthesized by Focused Laser Ablation in Liquid","authors":"Mengqi Shi, Hiroyuki Wada","doi":"10.3390/nano14151238","DOIUrl":"https://doi.org/10.3390/nano14151238","url":null,"abstract":"This study investigated the synthesis of cerium oxide (CeO2) nanoparticles (NPs) and composites with reduced graphene oxide (rGO) for the enhanced electrochemical sensing of ammonia. CeO2 NPs were prepared by the focused laser ablation in liquid (LAL) method, which enabled the production of high-purity, spherical nanoparticles with a uniform dispersion and sizes under 50 nm in a short time. The effects of varying irradiation fluence and time on the nanoparticle size, production yield, and dispersion were systematically studied. The synthesized CeO2 NPs were doped with rGO to form CeO2/rGO composites, which were drop casted to modify the glassy carbon electrodes (GCE). The CeO2/rGO-GCE electrodes exhibited superior electrochemical properties compared with single-component electrodes, which demonstrated the significant potential for ammonia detection, especially at a 4 J/cm2 fluence. The CeO2/rGO composites showed uniformly dispersed CeO2 NPs between the rGO sheets, which enhanced the conductivity, as confirmed by SEM, EDS mapping, and XRD analysis. Cyclic voltammetry data demonstrated superior electrochemical activity of the CeO2/rGO composite electrodes, with the 2rGO/1CeO2 ratio showing the highest current response and sensitivity. The CV response to varying ammonia concentrations exhibited a linear relationship, indicating the electrode’s capability for accurate quantification. These findings highlight the effectiveness of focused laser ablation in enhancing nanoparticle synthesis and the promising synergistic effects of CeO2 and rGO in developing high-performance electrochemical sensors.","PeriodicalId":508599,"journal":{"name":"Nanomaterials","volume":"91 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141812417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LAB-to-FAB Transition of 2D FETs: Available Strategies and Future Trends 二维场效应晶体管的 LAB 到 FAB 过渡：现有策略和未来趋势

Nanomaterials Pub Date : 2024-07-23 DOI: 10.3390/nano14151237

Yury Illarionov, Yezhu Lv, Yehao Wu, Yajing Chai

引用次数: 0

Rate-Dependent Stability and Electrochemical Behavior of Na3NiZr(PO4)3 in Sodium-Ion Batteries 钠离子电池中 Na3NiZr(PO4)3随速率变化的稳定性和电化学行为

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141204

Marwa Tayoury, Abdelwahed Chari, M. Aqil, Adil Sghiouri Idrissi, Ayoub El Bendali, J. Alami, Y. Tamraoui, M. Dahbi

引用次数: 0

Helical Hybrid Nanostructure Based on Chiral M13 Bacteriophage via Evaporation-Induced Three-Dimensional Process 通过蒸发诱导三维工艺获得基于手性 M13 噬菌体的螺旋混合纳米结构

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141208

Thanh Mien Nguyen, Sung-Jo Kim, Daegon Ryu, Jae Hun Chung, S. Lee, Sun-Hwi Hwang, Cheol Woong Choi, Jin‐Woo Oh

{"title":"Helical Hybrid Nanostructure Based on Chiral M13 Bacteriophage via Evaporation-Induced Three-Dimensional Process","authors":"Thanh Mien Nguyen, Sung-Jo Kim, Daegon Ryu, Jae Hun Chung, S. Lee, Sun-Hwi Hwang, Cheol Woong Choi, Jin‐Woo Oh","doi":"10.3390/nano14141208","DOIUrl":"https://doi.org/10.3390/nano14141208","url":null,"abstract":"The use of naturally sourced organic materials with chirality, such as the M13 bacteriophage, holds intriguing implications, especially in the field of nanotechnology. The chirality properties of bacteriophages have been demonstrated through numerous studies, particularly in the analysis of liquid crystal phase transitions, developing specific applications. However, exploring the utilization of the M13 bacteriophage as a template for creating chiral nanostructures for optics and sensor applications comes with significant challenges. In this study, the chirality of the M13 bacteriophage was leveraged as a valuable tool for generating helical hybrid structures by combining it with nanoparticles through an evaporation-induced three-dimensional (3D) printing process. Utilizing on the self-assembly property of the M13 bacteriophage, metal nanoparticles were organized into a helical chain under the influence of the M13 bacteriophage at the meniscus interface. External parameters, including nanoparticle shape, the ratio between the bacteriophage and nanoparticles, and pulling speed, were demonstrated as crucial factors affecting the fabrication of helical nanostructures. This study aimed to explore the potential of chiral nanostructure fabrication by utilizing the chirality of the M13 bacteriophage and manipulating external parameters to control the properties of the resulting hybrid structures.","PeriodicalId":508599,"journal":{"name":"Nanomaterials","volume":"1 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Niu, Y.; Galluzzi, M. Hyaluronic Acid/Collagen Nanofiber Tubular Scaffolds Support Endothelial Cell Proliferation, Phenotypic Shape and Endothelialization. Nanomaterials 2021, 11, 2334 更正：Niu, Y.; Galluzzi, M. Hyaluronic Acid/Collagen Nanofiber Tubular Scaffolds Support Endothelial Cell Proliferation, Phenotypic Shape and Endothelialization.纳米材料，2021，11，2334

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141203

Yuqing Niu, M. Galluzzi

引用次数: 0

Mo-Doped Ni/C Catalyst for Improved Simultaneous Production of Hydrogen and Carbon Nanotubes through Ethanol Decomposition 通过乙醇分解同时生产氢气和碳纳米管的掺钼镍/碳催化剂

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141205

Jinxiang Diao, Xiaojie Liu, Xianmeng Wang, Yuzhu Zhang, Jingkai Yue, Hui Wang

引用次数: 0

Size-Dependent Thresholds in CuO Nanowires: Investigation of Growth from Microstructured Thin Films for Gas Sensing 氧化铜纳米线的尺寸阈值：用于气体传感的微结构薄膜的生长研究

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141207

Christian Maier, V. Leitgeb, Larissa Egger, Anton Köck

引用次数: 0

Potentiometric Studies on Ion-Transport Selectivity in Charged Gold Nanotubes 带电金纳米管中离子传输选择性的电位计研究

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141209

Thomas T. Volta, Stevie N. Walters, Charles R. Martin

{"title":"Potentiometric Studies on Ion-Transport Selectivity in Charged Gold Nanotubes","authors":"Thomas T. Volta, Stevie N. Walters, Charles R. Martin","doi":"10.3390/nano14141209","DOIUrl":"https://doi.org/10.3390/nano14141209","url":null,"abstract":"Under ideal conditions, nanotubes with a fixed negative tube-wall charge will reject anions and transport-only cations. Because many proposed nanofluidic devices are optimized in this ideally cation-permselective state, it is important to know the experimental conditions that produce ideal responses. A parameter called Ccrit, the highest salt concentration in a contacting solution that still produces ideal cation permselectivity, is of particular importance. Pioneering potentiometric studies on gold nanotubes were interpreted using an electrostatic model that states that Ccrit should occur when the Debye length in the contacting salt solution becomes equivalent to the tube radius. Since this “double-layer overlap model” (DLOM), treats all same-charge ions as identical point charges, it predicts that all same-charged cations should produce the same Ccrit. However, the effect of cation on Ccrit in gold nanotubes was never investigated. This knowledge gap has become important because recent studies with a polymeric cation-permselective nanopore membrane showed that DLOM failed for every cation studied. To resolve this issue, we conducted potentiometric studies on the effect of salt cation on Ccrit for a 10 nm diameter gold nanotube membrane. Ccrit for all cations studied were, within experimental error, the same and identical, with values predicted by DLOM. The reason DLOM prevailed for the gold nanotubes but failed for the polymeric nanopores stems from the chemical difference between the fixed negative charges of these two membranes.","PeriodicalId":508599,"journal":{"name":"Nanomaterials","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation and Experimental Investigation of the Effect of Pore Shape on Heat Transfer Behavior of Phase Change Materials in Porous Metal Structures 多孔金属结构中孔隙形状对相变材料传热行为影响的模拟与实验研究

Nanomaterials Pub Date : 2024-07-16 DOI: 10.3390/nano14141206

Chao Chang, Bo Li, Baocai Fu, Xu Yang, Tianyi Lou, Yulong Ji

{"title":"Simulation and Experimental Investigation of the Effect of Pore Shape on Heat Transfer Behavior of Phase Change Materials in Porous Metal Structures","authors":"Chao Chang, Bo Li, Baocai Fu, Xu Yang, Tianyi Lou, Yulong Ji","doi":"10.3390/nano14141206","DOIUrl":"https://doi.org/10.3390/nano14141206","url":null,"abstract":"With the gradual increase in energy demand in global industrialization, the energy crisis has become an urgent problem. Due to high heat storage density, small volume change, and nearly constant transition temperature, phase change materials (PCMs) provide a promising method to store thermal energy. In this work, we designed and fabricated three kinds of porous metal structures with hexagonal, rectangular, and circular pores and explored the phase change process of PCMs within them. A two-dimensional numerical model was established to investigate the heat transfer process of PCMs within different shapes of porous metal structures and analyze the influence of heat source location on the thermal performance of the thermal storage units. Visualization experiments were also carried out to reveal the melting process of PCMs within different porous metal structures by a digital camera. The results show that paraffin in a porous metal structure with hexagonal pores has the fastest melting rate, while that in a porous metal structure with circular pores has the slowest melting rate. Under the bottom heating mode, the melting time of the paraffin in porous metal structures with hexagonal pores is shortened by 18.6% compared to that in porous metal structures with circular pores. Under the left heating mode, the corresponding melting time is shortened by 16.7%. These findings in this work will offer an effective method to design and optimize the structure of porous metal and improve the thermal properties of PCMs.","PeriodicalId":508599,"journal":{"name":"Nanomaterials","volume":"66 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0