Nanotechnology最新文献_第2页

Effects of the total thickness of multilayer thermite materials Al/CuO on the combustion mode and morphology of reaction products. 多层铝热材料Al/CuO总厚度对反应产物燃烧方式和形貌的影响。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-05 DOI: 10.1088/1361-6528/ae61b7

Alexander I Novoselcev, Maxim E Shiryaev, Roman M Ryazanov, Lidiya S Volkova, Artem V Sysa, Margarita D Kruzhalina, Sergey V Dubkov, Dmitry G Gromov, Egor A Lebedev

{"title":"Effects of the total thickness of multilayer thermite materials Al/CuO on the combustion mode and morphology of reaction products.","authors":"Alexander I Novoselcev, Maxim E Shiryaev, Roman M Ryazanov, Lidiya S Volkova, Artem V Sysa, Margarita D Kruzhalina, Sergey V Dubkov, Dmitry G Gromov, Egor A Lebedev","doi":"10.1088/1361-6528/ae61b7","DOIUrl":"https://doi.org/10.1088/1361-6528/ae61b7","url":null,"abstract":"The multilayer thermite material Al/CuO is an outstanding representative of metastable intermolecular composites characterized by excellent energy and combustible properties. However, the combustion of such a material is accompanied by intensive release of gas and spraying products. In this work, it is demonstrated that in a certain thickness range (2-3μm) of the multilayer thermite material (Al/CuO)nformed on the surface of Sitall substrates, the reaction products remain on the surface of the substrate in the form of composite entities, in some cases resembling ladybugs. By means of high-speed video shooting from different angles, the propagation velocity of the combustion front was measured and the intensity of gas release was visually assessed depending on the thickness of the multilayer structure (Al/CuO)n. The spraying products effect becomes significant for multilayer structures (Al/CuO)40with a total thickness of 4μm. It was found that the propagation velocity of the combustion front increases with the thickness of the multilayer structure (Al/CuO)nuntil the effect of spraying products intensifies. The morphology and composition of the combustion products of multilayer structures were studied using scanning electron microscopy in combination with focused ion beam and energy-dispersive x-ray spectroscopy. In particular, it was found that in many cases, the composite entities are hollow inside and consist of an aluminum oxide framework, rounded fuses of metallic copper, and fragments of unreacted film multilayers. As a result of the analysis of experimental data, two combustion modes of multilayer thermocomposite materials on a substrate were described depending on the temperature of the combustion front, which are related to the thickness of the multilayer structure.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":"37 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147840336","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

The high stable RuMnSnO_xcatalysts for enhanced oxygen evolution reaction and anti-reversal performance. 高稳定性的RuMnSnOx催化剂增强了析氧反应和抗反转性能。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-05 DOI: 10.1088/1361-6528/ae5fa1

Guang Zhu, Dan Lu, Xuefeng Zhou, Kaining Shen, Chenxi Xu

引用次数: 0

Predicting catalytic pathways for Thiophenol decomposition on TM-doped MoS₂: a comparative machine learning study. 预测tm掺杂二硫化钼上硫苯酚分解的催化途径：比较机器学习研究。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-04 DOI: 10.1088/1361-6528/ae61b9

Meng Zhang, Yingjiao Zhai, Xueying Chu, Jinhua Li, Fujun Liu

{"title":"Predicting catalytic pathways for Thiophenol decomposition on TM-doped MoS2: a comparative machine learning study.","authors":"Meng Zhang, Yingjiao Zhai, Xueying Chu, Jinhua Li, Fujun Liu","doi":"10.1088/1361-6528/ae61b9","DOIUrl":"10.1088/1361-6528/ae61b9","url":null,"abstract":"Thiophenol (TP), a high-toxicity compound prevalent in pharmaceuticals and industrial products, necessitates efficient catalytic decomposition methods. While two-dimensional MoS2offers a promising large surface area for catalysis, its inert basal plane and weak TP adsorption energy (1.60 eV) limit its efficacy. To address this, we designed a single-atom catalyst via transition metal (TM) doping of MoS2. Using first-principles calculations, we demonstrate that TM doping drastically alters the local charge density, significantly enhancing adsorption and catalytic activity for TP decomposition into H2and H2S. Our results identify Ni-doped MoS2as kinetically favored and Co-doped MoS2as thermodynamically favored for the reaction. Furthermore, we evaluated four machine learning models (linear regression, K-nearest neighbors, random forest, and gradient boosting regression trees) for predicting activation barriers and reaction energies. Random forest regression emerged as the most accurate predictor. This work provides a theoretical framework for eliminating toxic organic pollutants and establishes a machine-learning-guided strategy for accelerating catalyst screening.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147729436","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

Co 2+ -Intercalated 3D Nb2CTx/CNTs Flexible Film via Roller-Wetting for superior Lithium-Ion Storage 1 Co 2+ -Intercalated 3D Nb2CTx/CNTs Flexible Film via Roller-Wetting for superior Lithium-Ion Storage. 采用滚轴润湿技术的Co 2+ -嵌入3D Nb2CTx/CNTs柔性薄膜可提高锂离子存储性能。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-04 DOI: 10.1088/1361-6528/ae6819

Shiqi Li, Yuxin Chen, Dongliang Fan, Zhi Cao, Fengmei Guo, Yingjiu Zhang

{"title":"Co 2+ -Intercalated 3D Nb2CTx/CNTs Flexible Film via Roller-Wetting for superior Lithium-Ion Storage 1 Co 2+ -Intercalated 3D Nb2CTx/CNTs Flexible Film via Roller-Wetting for superior Lithium-Ion Storage.","authors":"Shiqi Li, Yuxin Chen, Dongliang Fan, Zhi Cao, Fengmei Guo, Yingjiu Zhang","doi":"10.1088/1361-6528/ae6819","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6819","url":null,"abstract":"Conventional flexible MXene films are predominantly fabricated via vacuum filtration, which inevitably suffers from concentration polarization, strict size limitations, and structural brittleness at high mass loadings. To address this issue, we introduced carbon nanotubes (CNTs) as interlayer spacers, leveraging their high conductivity and mechanical strength. The flexible and self-supporting composite films Nb2CTx/CNTs with layered porous structures were prepared by roller wetting method and freeze-drying techniques. The porous architecture effectively inhibited the restacking of Nb2CTx nanosheets and provided numerous active sites. Furthermore, a Co2+-intercalated composite (Co@Nb2CTx/CNTs) was fabricated through electrostatic adsorption and thermal annealing. The resulting electrode material demonstrated a larger specific surface area, multiplied reactive sites, and a decreased charge transfer resistance. Owing to the synergistic effects, the Co@Nb2CTx/CNTs electrode achieved a marked enhancement in performance, exhibiting a high specific capacity (300.2 mAh g-1 at 0.05 A g-1) coupled with robust cyclic stability (229.6 mAh g-1 retained after 2000 cycles at 2 A g-1). In addition, its remarkable mechanical flexibility suggests potential applicability in flexible energy storage devices.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147840267","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

Enhancing thermoelectric performance of GeTe monolayer via modulation doping at Ge sites. 通过在Ge位点调制掺杂提高GeTe单层热电性能。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-04 DOI: 10.1088/1361-6528/ae6274

L J Gong, R S Cheng, Q Z Han, J Yang, H L Shi, Y H Zhao, Z T Jiang

{"title":"Enhancing thermoelectric performance of GeTe monolayer via modulation doping at Ge sites.","authors":"L J Gong, R S Cheng, Q Z Han, J Yang, H L Shi, Y H Zhao, Z T Jiang","doi":"10.1088/1361-6528/ae6274","DOIUrl":"10.1088/1361-6528/ae6274","url":null,"abstract":"Aiming at improving the thermoelectric (TE) performance of the GeTe monolayer by means of doping, we systematically investigate the TE properties of the doped GeTe monolayers. By testing most of the atoms in Groups IIA-VA, we found that Be, Mg, Sn, and Pb are possible dopants in view of their stability and electrical conductivity. It is shown that the doping atom types and the doping concentrations can make different influences on the electronic energy band structures, the phononic spectra, and the electronic (phononic) transmission spectra. Furthermore, the Seebeck coefficientS, the electrical conductanceG, the power factorS2G, and the electronic (phononic) thermal conductancesκe(ph)will be changed to varying extents. Finally, we find that the resulting figures of meritZTs are closely dependent on the doping atom types and the doping concentration. In comparison with the pristine GeTe monolayer, theZTpeaks of the doped one can be manipulated by the atomic doping. At appropriate doping concentrations for different doping atoms, theseZTpeaks can be improved. Our findings demonstrate the feasibility of using Be, Mg, Sn, and Pb as the dopants to enhance the TE performance of the GeTe monolayer.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776516","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

Self-adhesive, stretchable, and conductive hydrogel for self-powered flexible electronics. 用于自供电柔性电子产品的自粘、可拉伸和导电水凝胶。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-01 DOI: 10.1088/1361-6528/ae678b

Mengxue Yan, Jiaming Zhang, Shuncheng Yao, Minhai Chen, Zhuo Wang, Li Zheng, Linlin Li

引用次数: 0

Gate-tunable polarization-sensitive broadband photodetector based on PdSe₂/2H-MoTe₂heterostructure. 基于pdse2 / 2h - mote2异质结构的栅极可调谐偏振敏感宽带光电探测器。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-01 DOI: 10.1088/1361-6528/ae6789

Yu Jia, Qiaochu Chen, Tao Hu, Guanghui Huo, Wei Bai

{"title":"Gate-tunable polarization-sensitive broadband photodetector based on PdSe2/2H-MoTe2heterostructure.","authors":"Yu Jia, Qiaochu Chen, Tao Hu, Guanghui Huo, Wei Bai","doi":"10.1088/1361-6528/ae6789","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6789","url":null,"abstract":"The vertical stacking of diverse materials provides a versatile platform for constructing multifunctional optoelectronic devices. However, for layered anisotropic materials, which can offer an additional degree of freedom to control in-plane optoelectronic performance, their stacking for multifunctional device applications remains limited. Here, an anisotropic PdSe2/2H-MoTe2vdWH is designed and fabricated, and gate-programmable photocurrent polarity reversal and operation-mode switching for polarization-sensitive broadband photodetection. Benefiting from the dual-gate tunability of the 2H-MoTe2, the reversible photoconductive and photovoltaic operation modes are realized, where an enhanced rectification ratio of 9.2 × 103 at a positive gate bias and a pronounced negative photoresponse with an extremely R of -25.6 A/W at a negative gate bias are highlighted. Broadband detection from 520 to 2000 nm with a peak responsivity of 151.1 A/W and polarization-dependent photoresponse from 520 to 1550 nm with a maximum polarization ratio up to 3.34 are demonstrated. Such multifunctional integration offers new insights into developing the highly integrated and intelligent optoelectronic systems by constructing the anisotropic heterostructures.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147817957","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

Preparation of a metal micro-nano electrode by femtosecond laser ablation and its electrochemical deposition characteristics. 飞秒激光烧蚀制备金属微纳电极及其电化学沉积特性。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-01 DOI: 10.1088/1361-6528/ae678a

Chen Li, Chenyang Xu, Lei Zhang, Yong Wang, Dexin Wang, Chang Ma, Xinyu Xie, Qingfa Peng

{"title":"Preparation of a metal micro-nano electrode by femtosecond laser ablation and its electrochemical deposition characteristics.","authors":"Chen Li, Chenyang Xu, Lei Zhang, Yong Wang, Dexin Wang, Chang Ma, Xinyu Xie, Qingfa Peng","doi":"10.1088/1361-6528/ae678a","DOIUrl":"https://doi.org/10.1088/1361-6528/ae678a","url":null,"abstract":"With the growing trend toward miniaturization and integration of electrochemical devices and systems, research on the electrochemical deposition characteristics of metal micro-nano electrodes has emerged as a focal point of interest. Femtosecond laser offers a green, flexible, and maskless method for fabricating such micro-nano electrodes. This paper presents a novel strategy for preparing functional micro-nano surfaces by integrating additive and subtractive manufacturing techniques. 3D micro-nano electrodes of various sizes are fabricated on Au-coated silicon wafers using femtosecond laser ablation, followed by investigation of their micro-nano scale electrochemical growth characteristics through electrochemical deposition technology. By systematically optimizing the key parameters of both femtosecond laser ablation and electrochemical deposition, diverse morphologies of metal electrode micro-nano composite structures can be achieved. These tailored structures hold promise for enabling multifunctional and high-performance electrochemical platforms that integrate sensitive detection, biomimetic materials, efficient catalysis, and energy storage capabilities.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147817934","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

Construction of hepatic stellate cells-targeted nanosystem of verteporfin for the effective treatment of liver fibrosis through mechanical signal modulation. 构建肝星状细胞靶向维替波芬纳米系统，通过机械信号调节有效治疗肝纤维化。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-01 DOI: 10.1088/1361-6528/ae6788

Qian-Qian Ma, Ling Wang, Bang-Le Zhang, Si-Yuan Zhou, Li-Shuang Hou

{"title":"Construction of hepatic stellate cells-targeted nanosystem of verteporfin for the effective treatment of liver fibrosis through mechanical signal modulation.","authors":"Qian-Qian Ma, Ling Wang, Bang-Le Zhang, Si-Yuan Zhou, Li-Shuang Hou","doi":"10.1088/1361-6528/ae6788","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6788","url":null,"abstract":"The mechanical traction caused by high cross-linking extracellular matrix (ECM) can promote the continuous activation of hepatic stellate cells (HSCs) by YAP-mediated mechanical signal. Therefore, targeted inhibiting the activation of HSCs induced by mechanical traction is the main measure to improve liver fibrosis. The aHSCs-targeted drug delivery nanosystem of verteporfin@polyethyleneimine-vitamin A (VP@PSA), which loaded verteporfin, a small molecule inhibitor of YAP in the Hippo signaling pathway to regulate mechanical signal transduction was constructed. The particle size of VP@PSA was 167.1±1.5 nm with great stability, and the drug loading of VP was 34.39±2.41% and encapsulation efficiency was 93.28±1.57%. The targeting and therapeutic effect of VP@PSA were verified by immunofluorescence, flow cytometry and competitive inhibition experiments. The biocompatibility was evaluated by hemolysis, pyrogen, vascular stimulation, respiration and behavior. Compared with non-targeted delivery system, VP@PSA showed best targeting ability to aHSCs among different kinds of liver cells. VP@PSA had an excellent therapeutic effect on suppressing the activation of HSCs, reducing ECM deposition and improving liver fibrosis by regulating YAP/LOXL2/CTGF signal in vitro and in vivo. Furthermore, VP@PSA had favorable biological safety and no toxicity to the main organs. The constructed VP@PSA delivery system laid a solid theoretical and experimental foundation for developing clinical targeted drugs for liver fibrosis.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147817818","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

Quasi-type-I band alignment in WS2/MoS2 heterostructures produced by H2S-based CVD. h2s CVD制备WS2/MoS2异质结构的准i型带对准

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-04-30 DOI: 10.1088/1361-6528/ae670b

Artem Loginov, Pavel V Fedotov, Ivan V Sapkov, V I Kleshch, Rinat Ismagilov, Elena D Obraztsova, Rishat G Valeev, A N Chulkov

{"title":"Quasi-type-I band alignment in WS2/MoS2 heterostructures produced by H2S-based CVD.","authors":"Artem Loginov, Pavel V Fedotov, Ivan V Sapkov, V I Kleshch, Rinat Ismagilov, Elena D Obraztsova, Rishat G Valeev, A N Chulkov","doi":"10.1088/1361-6528/ae670b","DOIUrl":"https://doi.org/10.1088/1361-6528/ae670b","url":null,"abstract":"In this work we report the synthesis and characterization of WS2/MoS2 heterostructures prepared by sequential chemical vapor deposition (CVD) using H2S and thermally evaporated metal as precursors. A thin WS2 covers (1-2 monolayers) are produced on pre-formed MoS2 nanowall films, resulting in nearly complete quenching of the MoS2 photoluminescence (PL) and emergence of a dominant WS2 PL peak at higher energy. Remarkably, electrical measurements reveal that the thermally activated conduction in the both layered materials have nearly the same activation energies, suggesting comparable donor activation energies and a possible near-alignment of the CBM positions within experimental uncertainty. This particular \"quasi-type-I\" alignment is in sharp contrast to the conventional staggered (type-II) alignment normally expected in WS2/MoS2 heterostructures. Transient absorption pump-probe spectroscopy shows signatures consistent with ultrafast interlayer charge transfer and possible interlayer exciton formation. We present a comprehensive study of the optical, structural, and transport properties of prepared samples, and discuss the carrier transfer mechanisms that give rise to the observed PL redistribution.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147817979","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