Nanotechnology最新文献_第10页

pH-Sensitive and Redox-Responsive Poly(Tetraethylene Glycol) Nanoparticle-Based Platform for Cancer Treatment. 基于 pH 值敏感性和氧化还原反应性聚（四甘醇）纳米粒子的癌症治疗平台。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-18 DOI: 10.1088/1361-6528/ad7c54

Qian Sun,Nuocheng Nuo Kong,Qing Han Zhao,Wen Xian Zhang,Meng Qi Tao,Hao Jiang,Li Ai Xuan,Ming Xian Li

{"title":"pH-Sensitive and Redox-Responsive Poly(Tetraethylene Glycol) Nanoparticle-Based Platform for Cancer Treatment.","authors":"Qian Sun,Nuocheng Nuo Kong,Qing Han Zhao,Wen Xian Zhang,Meng Qi Tao,Hao Jiang,Li Ai Xuan,Ming Xian Li","doi":"10.1088/1361-6528/ad7c54","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7c54","url":null,"abstract":"Effective drug delivery with precise tumour targeting is crucial for cancer treatment. To address the challenges posed by the specificity and complexity of the tumour microenvironment, we developed a poly(tetraethylene glycol)-based disulfide nanoparticle platform and explored its potential in cancer treatment, focusing on drug loading and controlled release performance. Poly(tetraethylene glycol) nanoparticles were characterised using nuclear magnetic resonance spectroscopy, mass spectrometry, and ultraviolet-visible spectroscopy. Additionally, we evaluated physicochemical properties, including dynamic light scattering, zeta potential analysis, drug loading capacity, and drug loading efficiency. The impact of nanoparticles on the mouse colorectal cancer cell line (CT26) and NIH3T3 cells was assessed using a cytotoxicity assay, live/dead staining assay, flow cytometry, and confocal fluorescence microscopy. The experimental results align with the expected chemical structure and physicochemical properties of poly(tetraethylene glycol) nanoparticles. These nanoparticles exhibit high drug loading efficiency (78.7%) and drug loading capacity (12%), with minimal changes in particle size over time in different media. In vitro experiments revealed that the nanoparticles can induce significant cytotoxicity and apoptosis in CT26 cells. Cellular uptake notably increases with increasing concentration and exposure time. The confocal microscopic analysis confirmed the effective distribution and accumulation of nanoparticles within cells. In conclusion, poly(tetraethylene glycol) nanoparticles hold promise for improving drug-delivery efficiency, offering potential advancements in cancer treatment.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253325","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}

引用次数: 0

Green synthesised Mn₃O₄and poly (o-phenylenediamine) for antimicrobial textile-based supercapacitor applications. 绿色合成 Mn3O4 和聚（邻苯二胺），用于抗菌纺织品超级电容器。

IF 2.9 4区材料科学

Nanotechnology Pub Date : 2024-09-17 DOI: 10.1088/1361-6528/ad773b

Darshini K S, Sohini Chakraborty, Dona Mary Sam, Mary N L

{"title":"Green synthesised Mn3O4and poly (o-phenylenediamine) for antimicrobial textile-based supercapacitor applications.","authors":"Darshini K S, Sohini Chakraborty, Dona Mary Sam, Mary N L","doi":"10.1088/1361-6528/ad773b","DOIUrl":"10.1088/1361-6528/ad773b","url":null,"abstract":"The advancement of wearable supercapacitors (SCs) has recently garnered a lot of attention owing to their ease of fabrication into textiles, low cost, long cycle life, fast charging and discharging, high efficiency, and ability to bridge the energy and power gap between conventional capacitors and batteries. The present study focuses on the development of wearable textile-based SC electrodes using green-synthesised manganese oxide nanoparticles functionalised on poly(o-phenylenediamine) reinforced to a polymer nanocomposite. The prepared nanocomposite was characterized using spectroscopic techniques such as UV-visible spectroscopy, Fourier transform infrared spectroscopy, x-ray diffraction studies, and scanning electron microscopy to validate the incorporation of metal oxide nanoparticles into the polymer matrix. The thermal properties were studied using thermogravimetric analysis and differential scanning calorimetry. The electrochemical performance of the bare polymer and the nanocomposite was evaluated using cyclic voltammetry, galvanostatic charge-discharge, and impedance spectroscopy techniques. An impressive specific capacitance of 213 Fg-1was achieved at a current density of 1 Ag-1for the polymer nanocomposite and even after 1000 cycles a capacitance retention of 89% was observed. Enhanced antimicrobial activity was also observed for the nanocomposite against both gram-negative and gram-positive bacteria. Based on these attributes, the fabricated device can be used as an efficient antimicrobial wearable SC.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133289","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}

引用次数: 0

Influence of vacuum thermal annealing and air exposure on the performance of single-layer MoS₂devices. 真空热退火和空气暴露对单层 MoS2 器件性能的影响。

IF 2.9 4区材料科学

Nanotechnology Pub Date : 2024-09-17 DOI: 10.1088/1361-6528/ad77dc

Pablo Bastante, Thomas Pucher, Andres Castellanos-Gomez

{"title":"Influence of vacuum thermal annealing and air exposure on the performance of single-layer MoS2devices.","authors":"Pablo Bastante, Thomas Pucher, Andres Castellanos-Gomez","doi":"10.1088/1361-6528/ad77dc","DOIUrl":"10.1088/1361-6528/ad77dc","url":null,"abstract":"Two-dimensional semiconducting materials such as MoS2have gained significant attention for potential applications in electronic components due to their reduced dimensionality and exceptional electrical and optoelectronic properties. However, when reporting the performance of such 2D-based devices, one needs to consider the effect of the environment in which the characterization is carried out. Air exposure has a non-negligible impact on the electronic performance and vacuum thermal annealing is an established method to decrease the effects of adsorbates. Nevertheless, when measurements are performed in ambient conditions these effects arise again. In this work, we study the changes in the electrical and optoelectronic properties of single-layer MoS2-based devices at air exposure after thermal annealing treatment. Measurements are carried out in anin-situvacuum thermal annealing system, enabling the recording of electrical performance degradation over time. Moreover, this work shows how hexagonal boron nitride (hBN) capping improves device performance, both in vacuum and after venting, as well as stability, by decreasing the degradation speed by around six times. The results suggest that vacuum thermal annealing and hBN capping are methods to mitigate the effects of air environment on these devices.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146007","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}

引用次数: 0

Salt-coated air oxidation nanodiamond surface purification with a photoluminescence spectroscopy quality control 盐涂层空气氧化纳米金刚石表面净化与光致发光光谱质量控制

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-17 DOI: 10.1088/1361-6528/ad760a

S A Savinov, T Yu Kolomiets, Dongxue Bi and V V Sychev

引用次数: 0

Heteroatom doped graphitic carbon nanotubes as freestanding anodes for advanced potassium-ion batteries. 掺杂杂原子的石墨碳纳米管作为先进钾离子电池的独立阳极。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b3b

Jiaqi Liu,Hanfeng Wu,Jiping Tang,Le Jiang,Zhenhan Wang,Yongjun Yuan,Wangfeng Bai,Xiaowei Shi,Shiting Wu

{"title":"Heteroatom doped graphitic carbon nanotubes as freestanding anodes for advanced potassium-ion batteries.","authors":"Jiaqi Liu,Hanfeng Wu,Jiping Tang,Le Jiang,Zhenhan Wang,Yongjun Yuan,Wangfeng Bai,Xiaowei Shi,Shiting Wu","doi":"10.1088/1361-6528/ad7b3b","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7b3b","url":null,"abstract":"Owing to its higher earth element reserve and similar chemical properties to lithium, potassium ion batteries (PIBs) have been regarded as a potential alternative to lithium-ion batteries. And considering the relatively larger ionic radius of potassium, available electrode materials need to be equipped with enough space for volume expansion during charge-discharge cycles, thus graphitic carbon nanomaterials with adjustable layer spacing gradually come into researcher's version. Here with copper nanowires serving as growth template and organic polyvinyl pyrrolidone (PVP) providing carbon source, freestanding and ultra-light graphitic carbon nanotube (GCNT) aerogels were simply assembled and annealed, which were directly used as anodes of PIBs. Annealing parameters (temperature and atmosphere) were adapted to regulate the lattice order and interlayer spacing of GCNTs, and N, O heteroatoms derived from PVP were directly doped into the carbon lattice during thermal annealing, to optimize and enhance the cycle capacity and rate performance of GCNT anodes. The electrochemical potassium storage mechanism of GCNTs was also quantitatively analyzed. Most of the potassium ions are reversibly stored by squeezing into and escaping from the carbon lattice, and simultaneously oxygen-containing functional groups with different chemical states also offer active redox sites and dedicate partial capacity. Therefore, our assembled GCNTs with large lumen are expected to sandwich-like load with active substances efficiently, further constructing next-generation PIBs with excellent performance.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253323","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}

引用次数: 0

Facile synthesis of Bi2ZnB2O7-MoS2 Nanocomposites for Photodetector and Photocatalytic Rhodamine B dye degradation Application. 用于光探测器和光催化降解罗丹明 B 染料的 Bi2ZnB2O7-MoS2 纳米复合材料的简便合成。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b3c

Chirag Porwal,Deepa Thakur,Akshay Gaur,Vishal S Chauhan,Viswanath Balakrishnan,Rahul Vaish

引用次数: 0

Fabrication of a Graphene@Ni foam-supported silver nanoplates-PANI 3D architecture electrode for enzyme-free glucose sensing. 制备用于无酶葡萄糖传感的石墨烯@镍泡沫支撑银纳米板-PANI 三维结构电极。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b41

Ahtisham Abdul Wahid,Muhammad Usman,Yasir Abdul Haleem,Arsalan Ahmed,Kabeer Raza,Muhammad Usman Munir,Lujun Pan,M Aslam Khan

{"title":"Fabrication of a Graphene@Ni foam-supported silver nanoplates-PANI 3D architecture electrode for enzyme-free glucose sensing.","authors":"Ahtisham Abdul Wahid,Muhammad Usman,Yasir Abdul Haleem,Arsalan Ahmed,Kabeer Raza,Muhammad Usman Munir,Lujun Pan,M Aslam Khan","doi":"10.1088/1361-6528/ad7b41","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7b41","url":null,"abstract":"Reliable and cost-effective glucose sensors are in rising demand among diabetes patients. The combination of metals and conducting polymers creates a robust electrocatalyst for glucose oxidation, offering enzyme-free, high stability, and sensitivity with outstanding electrochemical results. Herein, graphene is grown on nickel foam by chemical vapor deposition to make a graphene@nickel foam scaffold (G@NF), on which silver nanoplates-polyaniline (Ag-PANI) 3D architecture is developed by sonication-assisted co-electrodeposition. The resulting binder-free 3D Ag-PANI/G@NF electrode was highly porous, as characterized by XPS, FESEM, XRD, FTIR, and Raman spectroscopy. The binder-free 3D Ag-PANI/G@NF electrode exhibits remarkable electrochemical efficiency with a superior electrochemical active surface area. The amperometric analysis provides excellent anti-interference performance, a low limit of deduction (0.1 nM), robust sensitivity (1.7 x 1013 µA mM-1cm-2), and a good response time. Moreover, the Ag-PANI/G@NF enzyme-free sensor is utilized to observe glucose levels in human blood serums and exhibits excellent potential to become a reliable clinical glucose sensor.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253327","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}

引用次数: 0

Polyaniline/Graphitic Carbon Nitride/Reduced Graphene Oxide Ternary Nanocomposite Film for Flexible Thermoelectric Application. 用于柔性热电应用的聚苯胺/石墨氮化碳/还原氧化石墨烯三元纳米复合薄膜。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b3e

Manoj Singh,Amish Kumar Gautam,Mohd Faraz,Neeraj Khare

{"title":"Polyaniline/Graphitic Carbon Nitride/Reduced Graphene Oxide Ternary Nanocomposite Film for Flexible Thermoelectric Application.","authors":"Manoj Singh,Amish Kumar Gautam,Mohd Faraz,Neeraj Khare","doi":"10.1088/1361-6528/ad7b3e","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7b3e","url":null,"abstract":"The present study outlines the preparation of a ternary nanocomposite film comprising of polyaniline doped with camphor sulfonic acid (PANI), reduced graphene oxide (rGO), and graphitic carbon nitride (g-C3N4), and delves into its thermoelectric performance. PANI is known to possess high electrical conductivity (σ) and poor thermal conductivity (κ). However, its potential for thermoelectric applications is constrained by the low value of the Seebeck coefficient (S). The incorporation of g-C3N4 in PANI has been demonstrated to result in an improvement of the Seebeck coefficient. Furthermore, the addition of rGO to the PANI/g-C3N4 sample counteracts the decrease in electrical conductivity. The PANI/g-C3N4/rGO ternary nanocomposite film exhibits an enhanced Seebeck coefficient of ~2.2 times when compared to the PANI sample. The Seebeck coefficient of the PANI/g-C3N4/rGO nanocomposite is enhanced by the energy filtering effect that occurs at the interfaces between g-C3N4/PANI and PANI/rGO. The π-π interaction between the PANI chains and rGO is responsible for the increased electrical conductivity resulting from the well-ordered polymer chain arrangement on the g-C3N4 and rGO surfaces. The ternary nanocomposite sample demonstrated a synergistic improvement in both electrical conductivity and Seebeck coefficient, resulting in a remarkable ~4.6-fold increment in power factor and an ~4.3-fold enhancement in the figure of merit (zT), as compared to the pristine PANI film.&#xD.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253330","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}

引用次数: 0

Enhancement of photovoltaic parameters of thermally stable graphene/LaVO3 semitransparent solar cell by employing interfacial graphene quantum dots. 利用界面石墨烯量子点提高热稳定石墨烯/LaVO3 半透明太阳能电池的光电参数。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b3d

Hyo Han Kim,Do Hoon Kim,Bo Gyu Choi,Da Hee Kim,Siduck Oh,Dong Hee Shin,Hosun Lee

{"title":"Enhancement of photovoltaic parameters of thermally stable graphene/LaVO3 semitransparent solar cell by employing interfacial graphene quantum dots.","authors":"Hyo Han Kim,Do Hoon Kim,Bo Gyu Choi,Da Hee Kim,Siduck Oh,Dong Hee Shin,Hosun Lee","doi":"10.1088/1361-6528/ad7b3d","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7b3d","url":null,"abstract":"Semitransparent solar cells are attracting attention not only for their visual effects but also for their ability to effectively utilize solar energy. Here, we demonstrate a translucent solar cell composed of bis(trifluoromethane sulfonyl)-amide (TFSA)-doped graphene (Gr), graphene quantum dots (GQDs), and LaVO3. By introducing a GQDs intermediate layer at the TFSA-Gr/LaVO3 interface, we can improve efficiency by preventing carrier recombination and promoting charge collection/separation in the device. As a result, the efficiency of the GQDs-based solar cell was 4.35%, which was higher than the 3.52% of the device without GQDs. Furthermore, the average visible transmittance of the device is 28%, making it suitable for translucent solar cells. The Al reflective mirror-based system improved the power conversion efficiency (PCE) by approximately 7% compared to a device without a mirror. Additionally, the thermal stability of the device remains at 90% even after 2000 h under an environment with a temperature of 60°C and 40% relative humidity. These results suggest that TFSA-Gr/GQDs/LaVO3-based cells have a high potential for practical use as a next-generation translucent solar energy power source.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253331","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}

引用次数: 0

Non-radiative recombination centres in InGaN/GaN nanowires revealed by statistical analysis of cathodoluminescence intensity maps and electron microscopy. 通过阴极发光强度图和电子显微镜的统计分析揭示 InGaN/GaN 纳米线中的非辐射重组中心。

IF 3.5 4区材料科学

Nanotechnology Pub Date : 2024-09-16 DOI: 10.1088/1361-6528/ad7b43

Anh My-Nhat Quach,Névine Rochat,Jean-Luc Rouvière,Jérôme Napierala,Bruno Daudin

{"title":"Non-radiative recombination centres in InGaN/GaN nanowires revealed by statistical analysis of cathodoluminescence intensity maps and electron microscopy.","authors":"Anh My-Nhat Quach,Névine Rochat,Jean-Luc Rouvière,Jérôme Napierala,Bruno Daudin","doi":"10.1088/1361-6528/ad7b43","DOIUrl":"https://doi.org/10.1088/1361-6528/ad7b43","url":null,"abstract":"The methodology of statistical analysis of cathodoluminescence intensity mappings on ensembles of several hundreds of InGaN/GaN nanowires used to quantify non-radiative recombination centres was validated on InGaN/GaN nanowires exhibiting spatially homogeneous cathodoluminescence at the scale of single nanowires. Cathodoluminescence intensity variations obeying Poisson's statistics were assigned to the presence of randomly incorporated point defects acting as non-radiative recombination centres. Additionally, another type of non-radiative recombination centres, namely extended defects leading to spatially inhomogeneous cathodoluminescence intensity at the scale of single InGaN/GaN nanowires are revealed by high resolution scanning transmission electron microscopy, geometrical phase analysis and two-beam diffraction conditions techniques. Such defects are responsible for deviations from Poissons's statistics, allowing one to achieve a rapid evaluation of the crystallographic and optical properties of several hundreds of nanowires in a single cathodoluminescence intensity mapping experiment.&#xD.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253326","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}

引用次数: 0