Micro & Nano Letters最新文献

Catalytic oxidation of CO over CuO@TiO2 catalyst: The relationship between activity and adsorption performance CuO@TiO2 催化剂催化氧化 CO：活性与吸附性能之间的关系

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-11-10 DOI: 10.1049/mna2.70005

Yuan Bai, Ping Shi, Xin Zhang, Fei Wei, Liguo Chen, Jing Song, Jian Qiu, Bin Chen, Hong Zhu, Haitao Xu

引用次数: 0

Anticancer effect of surface functionalized nano titanium dioxide with 5-fluorouracil on oral cancer cell line—An in vitro study 表面功能化纳米二氧化钛与 5-氟尿嘧啶对口腔癌细胞系的抗癌作用--体外研究

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-10-17 DOI: 10.1049/mna2.70004

Marco Antonio Rivera Rodriguez, Verónica Campos-Ibarra, Aruna-Devi Rasu Chettiar, Latha Marasamy, Ravichandran Manisekaran

{"title":"Anticancer effect of surface functionalized nano titanium dioxide with 5-fluorouracil on oral cancer cell line—An in vitro study","authors":"Marco Antonio Rivera Rodriguez, Verónica Campos-Ibarra, Aruna-Devi Rasu Chettiar, Latha Marasamy, Ravichandran Manisekaran","doi":"10.1049/mna2.70004","DOIUrl":"https://doi.org/10.1049/mna2.70004","url":null,"abstract":"5-Fluorouracil (5-FU) is a chemotherapeutic agent widely used to treat different types of cancers. However, many patients present with obstacles during treatment due to 5-FU drug resistance. To overcome these drawbacks, a novel drug-loaded nanocarrier (NC) comprising titanium dioxide (TiO2) nanoparticles surface functionalized with 5-FU to facilitate drug delivery is developed. This study designs and evaluates the antitumour effects of NCs in oral cancer (OC) cell lines of lymphoid origin. NCs were synthesized by biofunctionalization of TiO2 nanoparticles with 3-aminopropyl triethoxysilane (APTES) which was then loaded with 5-FU. in vitro drug release was determined at three different pH values. The effect of chemotherapy was studied in mono- and co-culture systems comprising OC cells and human gingival fibroblasts (hGFs). From these studies, it is noted that after 24 h in an acidic medium (pH 5.5), more than 80% of 5-FU was released compared to that at basic pH. The cytotoxicity was higher when 5-FU was combined with the system TiO2-APTES, in comparison with 5-FU alone was used. The drug-loaded NC showed an increased antitumour effect in the OC cell line with minimal cytotoxicity to hGFs. The anticancer effect of TiO2/5-FU could be highly effective in the tumour microenvironment.","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"19 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesis of cerium oxide nanoparticles via Linum usitatissimum seeds extract and assessment of its biological effects 通过亚麻籽提取物绿色合成氧化铈纳米粒子并评估其生物效应

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-10-13 DOI: 10.1049/mna2.70003

Zahra Foroutan, Zahra Sabouri, Amir Reza Afshari, Asma Mostafapour, Bahareh Farasati Far, Mohammad Jalili-Nik, Majid Darroudi

{"title":"Green synthesis of cerium oxide nanoparticles via Linum usitatissimum seeds extract and assessment of its biological effects","authors":"Zahra Foroutan, Zahra Sabouri, Amir Reza Afshari, Asma Mostafapour, Bahareh Farasati Far, Mohammad Jalili-Nik, Majid Darroudi","doi":"10.1049/mna2.70003","DOIUrl":"https://doi.org/10.1049/mna2.70003","url":null,"abstract":"In the current work, CeO2-NPs were produced via a green chemistry process via Linum usitatissimum seeds extract as the stabilizing agent. The CeO2-NPs were characterized by the results of analytical techniques such as TGA/DTA, FTIR, UV–vis, XPS, XRD, and FESEM/PSA/EDX. The outcomes of the XRD pattern affirmed the crystalline structure of this product with the suggested size of about 20 nm, while the FESEM/PSA pictures presented spherical morphology. Additionally, the XPS analysis of CeO2-NPs affirmed the presence of a Ce+3 oxidation state in the sample, as well as Ce+4 as the major valence of cerium oxide. The results of the MTT test on Huh-7 cancer cells and HFF normal cells displayed the lack of any significant cytotoxicity even at concentrations up to 1000 µg/mL. Therefore, the obtained synthesized CeO2-NPs through this green method could be suggested as a prospective agent for medical applications due to its non-toxic effects.","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"19 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142435357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene nanoribbon FET technology-based OTA for optimizing fast and energy-efficient electronics for IoT application: Next-generation circuit design 基于石墨烯纳米带 FET 技术的 OTA，用于优化物联网应用中的快速节能电子器件：新一代电路设计

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-10-09 DOI: 10.1049/mna2.70002

Faraz Hashmi, M Nizamuddin, Mohammad Aleem Farshori, Syed Umar Amin, Zafar Iqbal Khan

{"title":"Graphene nanoribbon FET technology-based OTA for optimizing fast and energy-efficient electronics for IoT application: Next-generation circuit design","authors":"Faraz Hashmi, M Nizamuddin, Mohammad Aleem Farshori, Syed Umar Amin, Zafar Iqbal Khan","doi":"10.1049/mna2.70002","DOIUrl":"https://doi.org/10.1049/mna2.70002","url":null,"abstract":"The Internet of Things (IoT) and portable electronic devices are pivotal in enhancing living standards, with battery efficiency and compact design being critical for these devices. Analogue sensors, integral to advanced artificial intelligence, often necessitate complex real-time processing and actuation. This study examines the performance of one-dimensional armchair graphene nanoribbons in graphene nanoribbon field-effect transistors (GNRFETs). It compares graphene nanoribbon-based triple cascode operational transconductance amplifiers (GNRFET-TCOTAs) with conventional CMOS-based TCOTA. The results reveal substantial enhancements in the GNRFET-based TCOTAs: the pure GNR-TCOTA variant shows a remarkable 33.8% increase in DC gain and significant improvements in transconductance, slew rate, and gain-bandwidth, with enhancements of 8.48, 5.85, and 8.56 times, respectively. Furthermore, the pure GNRFET TCOTA exhibits higher speed, lower energy-delay product, and settling time compared to Si-CMOS-based TCOTA. The study also investigates the impact of critical design parameters on circuit performance. Overall, the research highlights the potential of GNRFETs to optimize TCOTA circuits, offering a path towards more efficient and compact electronic devices, thereby advancing the state of nanoelectronics and supporting the growth of high-performance IoT systems.","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"19 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of ZnCo2O4/Ag3PO4 composite photocatalyst for enhanced photocatalytic performance 构建 ZnCo2O4/Ag3PO4 复合光催化剂以提高光催化性能

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-09-23 DOI: 10.1049/mna2.12202

Jiayi Liu, Jiafeng Hu, Hao Hu, Xiaotao Zhou, Qiwei Wang, Weizhi Wei, Wenhui Liu

{"title":"Construction of ZnCo2O4/Ag3PO4 composite photocatalyst for enhanced photocatalytic performance","authors":"Jiayi Liu, Jiafeng Hu, Hao Hu, Xiaotao Zhou, Qiwei Wang, Weizhi Wei, Wenhui Liu","doi":"10.1049/mna2.12202","DOIUrl":"https://doi.org/10.1049/mna2.12202","url":null,"abstract":"In this study, ZnCo2O4/Ag3PO4 composite catalyst was prepared by the precipitation method, and their performance in the photocatalytic degradation of methyl orange (MO) was studied. The catalysts were characterized by scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, selected area electron diffraction, X-ray photoelectron spectroscopy, and UV-Vis diffuse reflectance spectroscopy. The results indicate that the 0.1 ZnCo2O4/Ag3PO4 composite system has good photocatalytic activity in the degradation of methyl orange. Under simulated sunlight conditions, the degradation rate can reach 94% after 30 min. The maximum reaction rate constant of 0.1 ZnCo2O4/Ag3PO4 was 0.05301 min−1, which is 3 times and 52 times the rate constant of pure Ag3PO4 and pure ZnCo2O4, respectively. In catalyst recycling experiments, 0.1 ZnCo2O4/Ag3PO4 still degraded methyl orange at a rate of 84.4% after three cycles. Trapping experiments showed that holes and superoxide radicals mostly contributed to the photocatalytic degradation of methyl orange by the catalyst, while hydroxyl radicals played a partial role. The energy level structure of ZnCo2O4/Ag3PO4 is conducive to the effective separation of photogenerated electrons and holes, improving the lifespan of photogenerated charges. In the investigated catalyst series, 0.1 ZnCo2O4/Ag3PO4 demonstrated the best photocatalytic performance.","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"19 5","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.12202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microcapsule preparation process research and current status of oilfield application 微胶囊制备工艺研究及油田应用现状

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-08-29 DOI: 10.1049/mna2.70000

Sicai Wang, Qun Zhang, Jianlong Xiu, Yuandong Ma, Lixin Huang, Lina Yi, Haowei Fu

{"title":"Microcapsule preparation process research and current status of oilfield application","authors":"Sicai Wang, Qun Zhang, Jianlong Xiu, Yuandong Ma, Lixin Huang, Lina Yi, Haowei Fu","doi":"10.1049/mna2.70000","DOIUrl":"https://doi.org/10.1049/mna2.70000","url":null,"abstract":"Traditional tertiary oil recovery methods are fraught with challenges such as significant reagent adsorption, voluminous injection requirements, limited sweep efficiency, and inadequate intelligent targeting. These issues lead to suboptimal displacement of residual oil, resulting in the inability to mobilize substantial crude oil resources and thus yielding low recovery rates. Microcapsules—spherical particles with micron or nanometer scale diameters—have been extensively utilized across various sectors, including food storage, targeted drug encapsulation, and fragrance containment, owing to their distinct advantages in controlled release, isolation, and targeted delivery. These applications have successfully achieved industrialization and commercialization. In recent years, numerous researchers have explored the application of microcapsule preparation processes to diverse facets of oil extraction, with the aim of further enhancing oil recovery (EOR). This article elucidates the mechanism of action of microcapsules, their preparation methods (encompassing in situ polymerization, interfacial polymerization, spray drying, solvent evaporation, phase separation, and supercritical CO2-assisted techniques), characterization and evaluation methodologies, among other aspects. It encapsulates the current status and principal challenges associated with the application of microcapsule preparation processes in oilfield development and probes the potential and pivotal research directions for their oilfield applications.","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"19 5","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142100461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generation of dual-mode PS-OAM beams using a Vivaldi antenna array 利用 Vivaldi 天线阵列生成双模 PS-OAM 波束

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-08-26 DOI: 10.1049/mna2.70001

Na Li, Guirong Feng, Lingling Jiao, Ping Li, Xiaowei Shi

引用次数: 0

Nonmonotonic load-dependence of friction during nanoparticle manipulation 纳米粒子操作过程中摩擦力的非单调负荷依赖性

IF 1.5 4区材料科学

Micro & Nano Letters Pub Date : 2024-07-18 DOI: 10.1049/mna2.12206

Chunsheng Luo, Lei Chen, Chuan Tang, Yangqin Liu, Yilong Jiang, Linmao Qian

引用次数: 0

Biomass N/P co-doped porous carbon plates for electrocatalytic oxygen reduction 用于电催化氧还原的生物质 N/P 共掺多孔碳板