Nano Select最新文献

{"title":"Enhancing Carbon Cloth Substrates for Water Splitting Catalysts via Nitric Acid Oxidation Pretreatment","authors":"YuanYe JIANG, Hui Wang, Mengqi Cui, Sundaram Gunasekaran, Xianguo Ma","doi":"10.1002/nano.70115","DOIUrl":"https://doi.org/10.1002/nano.70115","url":null,"abstract":"ABSTRACT Carbon cloth is widely chosen as the substrate for electrical catalysts. However, its practical use is limited by its relatively low specific surface area and hydrophobicity, which hinder the deposition of active components and overall catalytic performance. In this study, nitric acid pretreatment was used to oxidize the carbon cloth, modify its surface morphology, enhance surface functionalization, and increase its charge‐transfer capacity. After pretreatment, the surface area is significantly improved through etching and roughening, and hydrophilic and conductive groups are introduced and coordinated on the surface, facilitating the ion adsorption and charge transfer. These modifications enhance the electrochemical performance of the carbon cloth by increasing the electrochemical surface area (ECSA), lowering the energy barrier for the oxygen evolution reaction (OER), and reducing impedance, making it a better substrate for the OER catalyst. All these enhancements strongly support hydrothermal deposition and growth of active components, resulting in more uniform surface coverage and the formation of a 3D hierarchical structure. Additionally, by comparing the characterization and measurement results of carbon cloth pretreated at different nitric acid concentrations, the optimal nitric acid concentration for pretreating carbon cloth has been determined.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"7 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Application of Antimicrobial Nano‐ZnO Nanocoatings as the Surface of Cell Culture Dish","authors":"Juan Wang, Xiaoye Song, Houqiang Chen, Rongsheng Chen, Wensheng Deng, Hongwei Ni","doi":"10.1002/nano.70056","DOIUrl":"https://doi.org/10.1002/nano.70056","url":null,"abstract":"ABSTRACT Cell culture is an indispensable technique in biological research. However, cultured cells are vulnerable to microbial contamination, leading to unreliable and unrepeatable research data. Penicillin‐streptomycin, a common preventive measure, can significantly affect gene expression and regulation in cells. This study aims to develop a photocatalytic antimicrobial and biocompatible film for cell culture dish surfaces. Zinc oxide nanocoatings, synthesized by atomic layer deposition (ALD) on the surface of indium tin oxide (ITO) glass, exhibit strong, robust adhesion. We introduced an antibiotic‐free cell culture system utilizing ALD‐engineered ZnO nanocoatings. Scanning electron microscope (SEM), x‐ray diffraction (XRD), x‐ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) reveal a smooth surface and simple composition of the ZnO film. The ZnO nanofilms exhibited potent antimicrobial activity, achieving a bacterial lethality rate of 98.3% under visible light ( λ = 336 nm) within 30 min. Remarkably, these coatings sustained biocompatibility over three successive cell passages, as evidenced by unaltered proliferation rates ( p > 0.05) and preserved cytoskeletal architecture in HeLa cells. Furthermore, ZnO nanocoatings retain their exceptional properties even after five successive generations of cell culture, leading to a 60% reduction in plastic waste compared to conventional Petri dishes. This study suggests that ZnO nanocoatings could be a promising solution to reduce contamination and antibiotic use on cell culture surfaces.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/nano.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Characterization of Carbon Micro‐Embroideries Spheres: Based on SB3‐12@NaCl","authors":"Menglan Hu, Bo Meng, Bingxuan Du, Haichao Li","doi":"10.1002/nano.70063","DOIUrl":"https://doi.org/10.1002/nano.70063","url":null,"abstract":"ABSTRACT Carbon micro‐embroidered spheres with excellent dispersibility and controllable particle size were prepared by leveraging the intrinsic interaction between the surfactant 3‐(N,N‐dimethyldodecylammonio) propanesulfonate (SB3‐12) and sodium chloride (NaCl). Characterized by SEM and TEM, the overall morphology of the carbon micro‐embroidered spheres is similar to that of an embroidered ball, while DLS analysis revealed that their diameters range from 1.5 to 3.5 µm. Further characterization via XRD, Raman spectroscopy, XPS, and FT‐IR was conducted on the carbon micro‐embroidered spheres. Through these analyses, it was observed that with increasing SB3‐12 concentration, the diameter of the carbon micro‐embroidered spheres tends to first increase and then decrease; concurrently, disorder and defects in the spheres increase, and the contents of carbon, nitrogen, and oxygen gradually rise. In addition, the optical properties of the carbon micro‐embroidered spheres were characterized, exhibiting a broad fluorescence spectral range (375–460 nm). In general, novel carbon micro‐embroidered spheres with optical properties were successfully prepared by utilizing the interaction between 3‐(N,N‐dimethyldodecylammonio) propanesulfonate and sodium chloride.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/nano.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Moving Horizon Estimation for Al‐Doped ZnO Nanoparticle Synthesis: An Online UV‐vis Spectroscopy Approach","authors":"Guohui Yang, Marcel Kévin Jiokeng Dongmo, Thomas Meurer, Hermann Nirschl","doi":"10.1002/nano.70044","DOIUrl":"https://doi.org/10.1002/nano.70044","url":null,"abstract":"ABSTRACT Nanoparticles play a pivotal role in various applications, including electronics and photovoltaics. Among the diverse synthesis techniques, the sol‐gel process is widely utilized for producing transparent conductive nanostructures, such as aluminum‐doped zinc oxides (AZO), which serve as cost‐effective alternatives to indium tin oxide (ITO) for transparent electrodes. However, achieving precise control over critical particle properties, e.g., particle size distribution (PSD) remains a major challenge due to the inherent complexity of online monitoring during synthesis. This study develops a moving horizon estimator (MHE) to dynamically predict AZO nanoparticle properties during sol‐gel synthesis. The proposed approach combines online UV–vis spectroscopy with a population balance equation (PBE) model to estimate the PSD and related parameters. To reduce computational complexity, the high‐dimensional PBE model is simplified using dynamic mode decomposition with control (DMDc), retaining essential dynamics while enabling real‐time state estimation. The MHE‐based observer optimizes the consistency between measured and estimated AZO concentrations, demonstrating accurate real‐time prediction of PSD. Experimental validation shows strong agreement between the predicted PSD and offline measurements, confirming the observer's effectiveness. This approach paves the way for model predictive control, enhancing reproducibility and product quality in the synthesis of functional semiconductor nanoparticles.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"6 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/nano.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Thermal Management in Microelectronics Packaging With 2D h‐BN Nanocomposite Underfills","authors":"S. A. Razgaleh, Shyam Aravamudhan","doi":"10.1002/nano.202400073","DOIUrl":"https://doi.org/10.1002/nano.202400073","url":null,"abstract":"The quest for faster and more densely packed microelectronic circuits has necessitated significant advancements in thermal management and encapsulant manufacturing technologies. This pursuit has driven the development of innovative methods to enhance heat flux and thermal transfer in microelectronics packaging. A critical issue is the thermal stress induced by the coefficient of thermal expansion (CTE) mismatch between the chip and the substrate, threatening the chip's mechanical integrity and lifespan. To address this challenge, there is a growing emphasis on using underfills to improve thermal transfer and heat dissipation. The current study focuses on using hexagonal boron nitride (h‐BN) nanofillers for robust thermal support in microelectronics packaging. This study deploys epoxy adhesives to integrate nanofillers, where precise dispersion is crucial for optimizing thermal and mechanical properties. Findings show 1500‐ and 500‐nm h‐BN enhance axial thermal conductivity and diffusivity linearly with filler content, while the 70‐nm h‐BN plateaus at 3% volume. The 70‐nm h‐BN demonstrates superior radial thermal performance.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"6 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141927555","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}

{"title":"Conductive hydrogel as stress‐strain sensor for human motion monitoring","authors":"M. I. H. Mondal, Md. Sofiuzzaman, F. Ahmed, Volker Hessel, Mohammad Boshir Ahmed, M. Zargar","doi":"10.1002/nano.202400057","DOIUrl":"https://doi.org/10.1002/nano.202400057","url":null,"abstract":"Hydrogel‐based stress‐strain sensors have attracted immense attention recently for developing wearable electronic devices and health‐monitoring systems owing to their intrinsic soft characteristics and flexible nature. Developing hydrogel that has high conductivity, better mechanical performance, and elasticity is necessary for better analysis or getting accurate measurement data. Hence, this study focuses on the development of novel conductive hydrogels with enhanced mechanical, swelling, and sensing properties targeting the advancement of stress‐strain sensitive hydrogel sensors. Polyvinyl alcohol (PVA) and citric acid (CA) have been used to prepare esterified PVA/CA hydrogels while using a simple one‐pot method followed by doping with a conductive polymer (polyaniline, PANI). The resultant PVA/CA/PANI hydrogel displayed a high water uptake capacity of ∼4200%, a high mechanical strain of 700%, high puncture resistance, large durability, and a fast response time when applied as soft human‐motion sensors in real‐time measurement of large‐scale and subtle human physiological stress activities (i.e., joint motions in the forefinger, elbow, wrist, and neck). The high strain sensitivity and ultrahigh stretchability of hydrogel sensors allow them to detect small mechanical changes caused by human movement showing their great potential for hydrogel‐based sensor device fabrication.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"42 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804022","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}

{"title":"Electrochemical Mineralization Regulates Hydroxyapatite Deposition of Silk Fibroin Nanofibers for Promoting Osteogenic Differentiation of Human Mesenchymal Stem Cells","authors":"Leihao Lu, Xiao Yang, Dulin Wang, Suting Zhong, Ying Zhang, Guanshan Zhou, Chenlin Li, Jie Wang, Mingying Yang","doi":"10.1002/nano.202400030","DOIUrl":"https://doi.org/10.1002/nano.202400030","url":null,"abstract":"Scaffold and stem cells are the key elements in the procedure of bone repair. Bombyx mori silk fibroin (SF) is the proper material for bone tissue engineering due to its biocompatibility and its easy to obtain nanofiber structure. The suitable cell substrate is also an important factor because different cells have different adaptations to composite. For this case, selecting a scaffold that can promote osteogenic differentiation of various cells is crucial and meaningful. In this work, hydroxyapatite (HA) was deposited precisely onto each silk nanofiber by electrochemical mineralization (EC) to form SF/HA. SF/HA can promote the proliferation and osteogenic differentiation of both human bone marrow mesenchymal‐derived stem cells (hMSCs) and human adipose‐derived mesenchymal stem cells (hAMSCs). It also promot the expression of alkaline phosphatase (ALP) and osteogenic differentiation related genes. Western blot analyses show mitogen‐activated protein kinase (MAPK) signal pathway is regulated by SF/HA. Therefore, the study provides a proper method to obtain a good composite SF/HA and it promotes the osteogenic differentiation of both hMSCs and hAMSCs.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"14 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141813616","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}

{"title":"A Review: CRISPR Cas System and the Mechanism With an Inhibition of Binding of CRISPR Cas‐9","authors":"Akram Hosen, Md Nakibul Hasan Nishat, MD. Mohaimin Hossain Soaib, Omar Sharif Sharkar, Md. Sahabuddin, Imdadul Haque Sharif, S. K. Bhajan","doi":"10.1002/nano.202400009","DOIUrl":"https://doi.org/10.1002/nano.202400009","url":null,"abstract":"CRISPR Cas system is a revolutionary and precise genome editing system that induces bacterial and archaeal adaptive immunity and already has shown several promising applications in the treatment of genetic diseases and detection of nucleic acid targets. It is a complex tool, comprising diverse effector proteins and guide RNA that can be applied to dissociate and modify genes in living organisms along with the in vitro process. The review concentrates on the advances accomplished from some recent years to 2023 for the emergence of predicting actions of Cas protein with the guide RNA (gRNA), playing a key role in genome editing. This review emphasizes the effect of DNA structure and chromosomal protein on Cas 9 binding with a distinct classification of Cas types. The relevance of this review is highlighted by the significance of the rapid development of wide study methods and their potential impacts on the efficiency of the CRISPR Cas system. We have analyzed recent kinds of literature in this work to integrate a deep learning way that contributes over the next time with some important discussion about viral resistance in eukaryotes along with some cancer treatment strategies, and crop improvement by the CRISPR Cas system.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141826204","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}

{"title":"Modified Scaffolds With Magnetic Nanoparticles in Periodontal Tissue Regeneration","authors":"Dulce Guzmán-Rocha, Benjamin Aranda-Herrera, Laura Susana Acosta Torres, M. C. Arenas-Arrocena, Rene Garcia-Contreras","doi":"10.1002/nano.202400077","DOIUrl":"https://doi.org/10.1002/nano.202400077","url":null,"abstract":"Nanomaterials have displayed vast potential across a spectrum of biomedical applications, particularly in recent studies aimed at optimizing traditional systems. Metal oxide nanoparticles, like Magnetic nanoparticles (MNPs), offer unique physicochemical properties ideal for biomedical applications, advancing diagnostics, therapies, tissue engineering and imaging technologies in medicine. Their notable features, such as high specific surface area and porous structure, render them versatile for myriad medical and biological uses. When combined with polymers, MNPs have found utility in nano‐scale treatments targeting specific human ailments, encompassing drug delivery, tissue engineering, and wound care. This review focuses on summarizing the utilization of MNPs examining their structural attributes, magnetic properties, biocompatibility, and their role in scaffolding applications. Furthermore, within the dental domain, periodontitis presents substantial challenges, prompting research into regenerative therapies to foster the growth and specialization of key cell types crucial for effective disease management and tissue revitalization.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141826601","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}

{"title":"Aggregation and Sedimentation Stability of Nanoscale Zeolitic Imidazolate Framework (ZIF‐8) Nanocomposites for Antimicrobial Agent Delivery Applications","authors":"Zeynep Sevimli-Yurttas, Rosana G. Moreira, E. Castell‐Perez","doi":"10.1002/nano.202400029","DOIUrl":"https://doi.org/10.1002/nano.202400029","url":null,"abstract":"The applications of nanoscale zeolitic imidazolate frameworks (ZIF‐8) for antimicrobial drug delivery depend on the aqueous suspension stability of the ZIF‐8 which is influenced by their crystallinity, size, shape, aggregation, and surface chemistry. This study evaluated the stability of ZIF‐8 nanoparticles in terms of their aggregation and sedimentation characteristics. ZIF‐8 nanocomposites were synthesized with methanol via sonication at 30°C for 1 h. The effect of drying methods (oven drying at 80°C, and vacuum drying at 35°C), number of washing steps (0 = no wash, 1, 2, 3), and washing medium (washing with water and ethanol instead of methanol, and redispersion in water and ethanol) on the suspension stability was evaluated. The impact of added xanthan gum (XG) and poly‐L‐lysine (PL) as suspension media was also evaluated. ZIF‐8 nanoparticles were also synthesized using ethanol and suspended in PL. % transmittance and zeta potential were measured for freshly prepared ZIF‐8 suspensions in PL and after freeze‐drying and resuspending in water. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and x‐ray diffraction (XRD) analysis were utilized for the assessment of the crystallinity, structure, and morphology of the samples. Antibacterial activity was evaluated by disc diffusion test against Escherichia coli. Dried methanol‐synthesized ZIF‐8 nanoparticles did not suspend in water; only the ZIF‐8 nanoparticles synthesized with reduced washing times and no drying treatment were resuspended in the water, XG and PL solutions. Instead, the ethanol‐synthesized ZIF‐8 nanoparticles were resuspended in water even after being washed three times and dried in a vacuum oven. SEM and TEM images and XRD patterns showed that alcohol can form well‐defined ZIF‐8 nanoparticles. FTIR spectra showed that ZIF‐8 had typical peaks of ZIF‐8 reported by others. Although particle size increased, the PL coating provided a 32.22% increase in zeta potential of ZIF‐8 nanoparticles from 36.25 to 47.93 mV (p < 0.05) and prevented aggregation and sedimentation of the nanoparticles without changing their morphology. All the tested ZIF‐8 nanoparticles showed antibacterial activity with the PL‐coated ZIF‐8 having the highest effect followed by the ZIF‐8 nanoparticles synthesized in ethanol.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"43 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643456","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}