Nano Futures最新文献

{"title":"Metal halide perovskite nanocrystals for x-ray scintillators","authors":"Handong Jin, Shihe Yang, M. Iqbal, Yu-Jia Zeng","doi":"10.1088/2399-1984/ac9568","DOIUrl":"https://doi.org/10.1088/2399-1984/ac9568","url":null,"abstract":"Radiation detection, converting high-energy (keV) photons to lower energy (1.7–3 eV) photons, is of great importance in various fields, including medical diagnostics, quality inspection, and security checking. High-resolution scintillation imaging based on lead halide perovskite nanocrystals is very promising for these applications owing to their high absorption cross-section for x-rays, fast decay time, room temperature fabrication, tunable bandgap, low trap density, and near-unity photoluminescence quantum yield. Although considerable achievements have been made, challenges remain for future industrialization. Herein, the progress of scintillators based on lead halide perovskite nanocrystals is reviewed, including their working mechanisms, key parameters, and the relationship between growth conditions and performance. An overview of the current state in this promising research area toward high-performance x-ray scintillators is provided, along with a look at some of the challenges and opportunities that lie ahead.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47132759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Opportunities and challenges for antimicrobial nanostructured materials in the management of skin infections","authors":"M. Arruebo","doi":"10.1088/2399-1984/ac92f1","DOIUrl":"https://doi.org/10.1088/2399-1984/ac92f1","url":null,"abstract":"The management of skin and soft-tissue infections represents a burden for healthcare systems worldwide, demanding additional scientific efforts. Despite combined advances in modern medicine from different disciplines, chronic non-healing topical wounds still represent an unresolved clinical challenge. Nanotechnology has contributed significantly to the development of advanced therapeutic and diagnostic approaches in wound care. From this perspective, recommendations on the design of nano-based approaches for the management of infected non-healing chronic wounds are suggested. Preclinical results have demonstrated that nanostructured antimicrobial-loaded dressings and hydrogels can reduce the pathogenic bioburden and can restore the wound’s physiological balance. Future clinical trials that ensure meaningful results are recommended.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44606875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Layer-structured NiFe nanosheets on CoNi nanowires for enhanced oxygen evolution reaction","authors":"Yichuan Guo, Zizhen Gong, Hang Yu, Guihua Liu, Zisheng Zhang, Changcheng Wu, Jingde Li","doi":"10.1088/2399-1984/ac9022","DOIUrl":"https://doi.org/10.1088/2399-1984/ac9022","url":null,"abstract":"Efficient electrocatalysts are critical for the oxygen evolution reaction (OER) that occurs during water electrolysis. Herein, a simple and low-cost strategy of assembling CoNi nanowire arrays with NiFe nanosheets on flexible carbon cloth (CC) support as an efficient OER catalyst is developed. This unique ‘nanosheets on nanowires’ structure design increases its specific surface area, enabling access to more active sites. The resulting NiFe@H-CoNi/CC catalyst exhibits excellent OER activity (280 mV overpotential at 100 mA cm−2) with a Tafel slope of 36 mV dec−1 and also has outstanding durability at high current operation conditions (over 100 h at 100 mA cm−2). Moreover, in-situ Raman analysis suggests that the NiOOH is the realistic OER active phase. This ‘nanosheet on nanowire’ design gives a means for fabricating OER catalysts that are both high-performance and long-lasting.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44178562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lithography-free fabrication and optical characterizations of nanotextured nickel dewetting thin film for broadband absorbers","authors":"Rongpeng Fang, Zhenshan Yu, Yu‐Sheng Lin","doi":"10.1088/2399-1984/ac8dce","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8dce","url":null,"abstract":"Plasmonic structures based on metamaterials are widely studied and have been extensively researched in various applications. However, the fabrication of regular nanostructures always requires expensive equipment and a strict working environment, lacking the ability for large-scale fabrication. In this study, we propose and demonstrate simple nanotextured nickel (Ni) dewetting thin films on silicon (Si) and quartz substrates by using different thermal annealing temperatures. They achieve a broadband absorption range with near zero reflectivity due to the standing-wave resonances of surface plasmon polariton, and the resonance is relative to the material of the substrate. The topographies of the nanotextured Ni dewetting thin films vary with thermal annealing temperatures at different dewetting stages. The corresponding reflection and absorption resonant wavelengths of the devices are redshifted by increasing the thermal annealing temperatures. The main absorption resonances are at wavelengths of 610 nm, 580 nm, 625 nm, and 660 nm on the Si substrate. While the reflectivity of the sample around the visible range is lower than 40%, it is suitable for broadband absorption for green and yellow spectra. Moreover, the resonant wavelengths are blueshifted by increasing the incident angles. The demonstrated devices are also sensitive to the ambient media. The reflection resonant wavelengths are redshifted by increasing the environmental refraction indexes. The corresponding reflected colors are changed from green to yellow . These devices exhibit a highest sensitivity of 500 nm RIU−1 and can be used for color sensors. This proposed approach has large-scale fabrication capacity and provides promising applications for broadband absorbers, reflective displays, environmental sensors, and other optoelectronic fields.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48328655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application status of zeolitic imidazolate framework in gas sensors","authors":"Bo-Ting Huang, Yanqiong Li, Wen Zeng","doi":"10.1088/2399-1984/ac84b5","DOIUrl":"https://doi.org/10.1088/2399-1984/ac84b5","url":null,"abstract":"In recent years, metal organic frameworks (MOFs) have become emerging materials. Their applications in various fields are increasingly reported due to their special structure and excellent physical and chemical properties. Zeolitic imidazolate framework (ZIF) is a sub-system of MOF with good stability and similar structure to conventional type of zeolites. A variety of ZIF crystals have been obtained by adjusting metal ions as well as organic ligands. Through investigation, we found that the literature on gas sensing mainly focuses on the complexes of ZIF-8 and derivatives of ZIF-67, and there were also some reports on the application of other ZIF materials in gas response. In this paper, the reports of ZIF materials in the direction of gas sensing in recent years are summarized. By summarizing and considering the existing studies, it can help us better understand the current progress and limitations of ZIF materials in the development of gas sensing, and provide some possible development directions or ideas for the future development of ZIF materials.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47545289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A short review on transition metal chalcogenides/carbon nanocomposites for energy storage","authors":"Parisa Salarizadeh, Mohadese Rastgoo-Deylami, M. Askari, Khadijeh Hooshyari","doi":"10.1088/2399-1984/ac8460","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8460","url":null,"abstract":"Introducing suitable electrode materials and electrolytes for supercapacitors and next-generation batteries should be considered for the industrial application of these devices. Among the proposed materials for them, transition metal chalcogenides (TMCs), are attractive and efficient options due to their unique properties such as appropriate layered structure, good oxidation state of transition metals, high thermal and mechanical stabilities, etc. However, applying other layered materials with high electrical conductivity e.g. carbon-based materials can lead to producing remarkable results for the mentioned applications. However, an interesting point is how making TMCs composite with different types of carbon materials leads to improve electrochemical and structural properties of TMCs as active materials. In the present short review, the structural and electrochemical improvements of different types of TMC composites with carbon-based materials and their mechanism are investigated for supercapacitors and next-generation rechargeable batteries.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49587933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and application of lignin nanoparticles: a review","authors":"Baoping Zhu, Yang Xu, Huanfei Xu","doi":"10.1088/2399-1984/ac8400","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8400","url":null,"abstract":"Lignin is a natural renewable biopolymer with abundant reserves and great potential. As a by-product of the pulp and paper industry, the world can produce 150 billion tons of it every year, but it has not been effectively utilized. It was found that disordered and complex lignin can be converted into ordered and homogeneous nanoparticles by self-assembly, solvent exchange and acid precipitation. Lignin nanoparticles (LNPs) have the advantages of high stability, high activity, good biocompatibility and biodegradability, as well as improved structural and size control, antioxidant activity and other properties. LNPs have great potential for application not only as a natural alternative to traditional petroleum derivatives, biopharmaceutical carriers, but also in hydrogels. In recent years, the research of LNPs has received a lot of attention. It is hoped that more economical, environmentally friendly and high yielding methods for the synthesis of LNPs will be investigated in the future. This paper reviews the preparation methods of LNPs and their applications in various fields.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44234558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silver nanowires: a focused review of their synthesis, properties, and major factors limiting their commercialization","authors":"T. Muhmood, Farooq Ahmad, Xiaobin Hu, Xiaofei Yang","doi":"10.1088/2399-1984/ac8388","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8388","url":null,"abstract":"Metallic nanostructures play a vital role in the nanoscale engineering of flexible optoelectronic devices as active units. Due to the limited flexibility properties of nanoparticles, researchers are devoting much more attention nowadays to nanowires (NWs) for designing flexible transparent electrodes for different electronic devices. Silver NW (AgNW) possesses a 1D structure with a changeable aspect ratio. It also includes up-to-date properties for future optoelectronic devices, such as low cost, high conductivity, high transparency, and mechanical flexibility. In view of the increasing demand for AgNWs, commercial-scale synthesis of AgNWs is inevitable. However, high discrepancies among the published data have resulted in a major delay in its commercialization. Therefore, this review critically discusses the ignored factors that limit AgNW commercialization and provide possible solutions.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45896510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical detection of homovanillic acid, a breast cancer biomarker, using Pluronic-modified MoS2 nanosheets","authors":"Mohammed Zniber, Parastoo Vahdatiyekta, Shounak Roy, K. Nikiforow, Amit K Jaiswal, T. Huynh","doi":"10.1088/2399-1984/ac8215","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8215","url":null,"abstract":"Two-dimensional transition metal dichalcogenides have gained considerable attention from the scientific community for their various applications thanks to their remarkable chemical, physical, optical and electronic properties. In this study, MoS2 nanosheets were synthesized using a kitchen blender with the assistance of a surfactant, Pluronic F-127, through a shear-exfoliation process. The chemical composition, nanostructure and electrochemical properties of the synthesized MoS2–F127 were characterized by different methods. A Pt electrode modified with MoS2–F127 (Pt/MoS2–F127) was used with differential pulse voltammetry for the electrochemical detection of homovanillic acid (HVA) – a breast-cancer biomarker, in the presence of common interferents in urine. This study provides a new approach to discriminate the electrochemical signals of HVA and uric acid, leading to higher selectivity of the sensor.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42208531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Roadmap for network-based biocomputation","authors":"F. van Delft, A. Månsson, H. Kugler, T. Korten, C. Reuther, Jingyuan Zhu, R. Lyttleton, T. Blaudeck, C. Meinecke, Danny Reuter, S. Diez, H. Linke","doi":"10.1088/2399-1984/ac7d81","DOIUrl":"https://doi.org/10.1088/2399-1984/ac7d81","url":null,"abstract":"Network-based biocomputation (NBC) is an alternative, parallel computation approach that can potentially solve technologically important, combinatorial problems with much lower energy consumption than electronic processors. In NBC, a combinatorial problem is encoded into a physical, nanofabricated network. The problem is solved by biological agents (such as cytoskeletal filaments driven by molecular motors) that explore all possible pathways through the network in a massively parallel and highly energy-efficient manner. Whereas there is currently a rapid development in the size and types of problems that can be solved by NBC in proof-of-principle experiments, significant challenges still need to be overcome before NBC can be scaled up to fill a technological niche and reach an industrial level of manufacturing. Here, we provide a roadmap that identifies key scientific and technological needs. Specifically, we identify technology benchmarks that need to be reached or overcome, as well as possible solutions for how to achieve this. These include methods for large-scale production of nanoscale physical networks, for dynamically changing pathways in these networks, for encoding information onto biological agents, for single-molecule readout technology, as well as the integration of each of these approaches in large-scale production. We also introduce figures of merit that help analyze the scalability of various types of NBC networks and we use these to evaluate scenarios for major technological impact of NBC. A major milestone for NBC will be to increase parallelization to a point where the technology is able to outperform the current run time of electronic processors. If this can be achieved, NBC would offer a drastic advantage in terms of orders of magnitude lower energy consumption. In addition, the fundamentally different architecture of NBC compared to conventional electronic computers may make it more advantageous to use NBC to solve certain types of problems and instances that are easy to parallelize. To achieve these objectives, the purpose of this roadmap is to identify pre-competitive research domains, enabling cooperation between industry, institutes, and universities for sharing research and development efforts and reducing development cost and time.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46327054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}