Nanomaterials最新文献

Near-Field Nano-Focusing and Nano-Imaging of Dielectric Microparticle Lenses.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-09 DOI: 10.3390/nano14231974

Jinzhong Ling, Yucheng Wang, Jinkun Guo, Xin Liu, Xiaorui Wang

{"title":"Near-Field Nano-Focusing and Nano-Imaging of Dielectric Microparticle Lenses.","authors":"Jinzhong Ling, Yucheng Wang, Jinkun Guo, Xin Liu, Xiaorui Wang","doi":"10.3390/nano14231974","DOIUrl":"https://doi.org/10.3390/nano14231974","url":null,"abstract":"Compared with traditional far-field objective lenses, microparticle lenses have a distinct advantage of nonobservance of the diffraction limit, which has attracted extensive attention for its application in subwavelength photolithography and super-resolution imaging. In this article, a complete simulation model for a microparticle lens assisted microscopic imaging system was built to analyze the imaging characteristics of any shape of microparticle lens. With this model, we simulated the resolution of a conventional objective lens, a microsphere lens and a hollow microsphere lens, which verified the correctness of our simulation model and demonstrated the super-resolution imaging ability of microsphere lenses. Secondly, the focusing and imaging characteristics of four typical microparticle lenses are illustrated, and how the focal spot affects imaging resolution and imaging quality is analyzed. Upon this conclusion, we reformed and upgraded the microsphere lens with several parameters for smaller focal spots and higher imaging resolution. Finally, three types of microparticle lenses were designed through the optimized parameters and their focusing and imaging characteristics were demonstrated with a minimum FWHM of 140 nm at the focal plane and a highest imaging resolution around 70 nm (~λ/6). Our work opens up a new perspective of super-resolution imaging with near-field microparticle lens.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Additive Manufacturing of Binary and Ternary Oxide Systems Using Two-Photon Polymerization and Low-Temperature Sintering.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-09 DOI: 10.3390/nano14231977

Halima El Aadad, Hicham El Hamzaoui, Yves Quiquempois, Marc Douay

{"title":"Additive Manufacturing of Binary and Ternary Oxide Systems Using Two-Photon Polymerization and Low-Temperature Sintering.","authors":"Halima El Aadad, Hicham El Hamzaoui, Yves Quiquempois, Marc Douay","doi":"10.3390/nano14231977","DOIUrl":"https://doi.org/10.3390/nano14231977","url":null,"abstract":"Multicomponent oxide systems have many applications in different fields such as optics and medicine. In this work, we developed new hybrid photoresists based on a combination of an organic acrylate resin and an inorganic sol, suitable for 3D printing via two-photon polymerization (2PP). The inorganic sol contained precursors of a binary SiO2-CaO or a ternary SiO2-CaO-P2O5 system. Complex microstructures were 3D printed using these hybrid photoresists and 2PP. The obtained materials were characterized using thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) techniques. Our results revealed that the produced microstructures were able to endure sintering at 700 °C without collapsing, leading to scaffolds with 235 and 355 nm resolution and pore size, respectively. According to the TGA analysis, there was no significant mass loss beyond 600 °C. After sintering at 500 °C, the FTIR spectra showed the disappearance of the characteristic bands associated with the organic phase, and the presence of bands characteristic of the binary and ternary oxide systems and carbonate groups. The SEM images showed different morphologies of agglomerated nanoparticles with mean sizes of about 20 and 60 nm for ternary and binary systems, respectively. Our findings open the way towards precise control of bioglass scaffold fabrication with tremendous design flexibility.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Photomodification Method Allows for Determining the Composition of the Full and Soft Protein Corona on the Lipid Surface of Composite Nanoparticles.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-09 DOI: 10.3390/nano14231976

Anna V Epanchintseva, Svetlana V Baranova, Julia E Poletaeva, Anastasiya V Tupitsyna, Elena I Ryabchikova, Ilya S Dovydenko

{"title":"The Photomodification Method Allows for Determining the Composition of the Full and Soft Protein Corona on the Lipid Surface of Composite Nanoparticles.","authors":"Anna V Epanchintseva, Svetlana V Baranova, Julia E Poletaeva, Anastasiya V Tupitsyna, Elena I Ryabchikova, Ilya S Dovydenko","doi":"10.3390/nano14231976","DOIUrl":"https://doi.org/10.3390/nano14231976","url":null,"abstract":"A protein corona (PC) is formed and maintained on the surface of any nanoparticle (NP) introduced into biological media. The full PC is formed by a hard and soft corona, and the latter determines the nature of the interaction of NPs with cells and the body's liquids. Nanomedicines are becoming increasingly important in modern health services, making information about the composition of PCs on the surface of NPs critically important for \"managing\" the behavior of nano-objects in the body. Currently, only a few studies report on the composition of the complete PC, since the isolation and preservation of the soft corona on the surface of the NP is extremely difficult. Recently, we proposed for the first time a photomodification method to fix PCs on the lipid surface of composite NPs, along with their isolation and purification. In this work, using tandem mass spectrometry, we successively determined the composition of the hard and full corona on the lipid surface of composite NPs, and we also identified the composition of the soft corona. To test the method, we changed the composition of the medium whose proteins formed the soft corona, and we found changes in its composition.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142838042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Theoretical Analysis of Contact Angle and Contact Angle Hysteresis of Wenzel Drops on Superhydrophobic Surfaces.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-09 DOI: 10.3390/nano14231978

Yufeng Li, Junyan Liu, Jialong Dong, Yufeng Du, Jinchun Han, Yuanyuan Niu

引用次数: 0

Controlling the Optical and Electrical Properties of Perovskite Films and Enhancing Solar Cell Performance Using the Photonic Curing Process.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-09 DOI: 10.3390/nano14231975

Moulay Ahmed Slimani, Arjun Wadhwa, Luis Felipe Gerlein, Jaime A Benavides-Guerrero, Mohamad Hassan Taherian, Ricardo Izquierdo, Sylvain G Cloutier

{"title":"Controlling the Optical and Electrical Properties of Perovskite Films and Enhancing Solar Cell Performance Using the Photonic Curing Process.","authors":"Moulay Ahmed Slimani, Arjun Wadhwa, Luis Felipe Gerlein, Jaime A Benavides-Guerrero, Mohamad Hassan Taherian, Ricardo Izquierdo, Sylvain G Cloutier","doi":"10.3390/nano14231975","DOIUrl":"https://doi.org/10.3390/nano14231975","url":null,"abstract":"The most common method of processing metal oxide and perovskite thin films in the laboratory is thermal annealing (TA), which is a constraint for the commercialization of large-scale perovskite solar cells. Here, we present a photonic curing (PC) process to produce fully photonically annealed perovskite cells-a fast process with well-controlled, short light pulses-to develop perovskite photovoltaic devices with high efficiency. We also demonstrate how to use the parameters of the photonic annealing system to control the optical, electrical, morphological, and structural properties of perovskite layers for photovoltaic device applications. The effect of PC treatment on the microstructure, granularity, and electronic properties was studied by scanning electron microscopy (SEM), photoluminescence (PL), and transient photocurrent (TPC). The degree of conversion of the perovskite precursor and its influence on the electronic structure have been identified. SnO2 and perovskite films were treated with a single pulse and produced PCE comparable to control samples treated by TA.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Palladium Nanocubes as Saturable Absorbers for Mode-Locked Laser Generation at 1.56 μm.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-08 DOI: 10.3390/nano14231971

Zhe Kang, Fang Wang

引用次数: 0

Design of a Deep Learning-Based Metalens Color Router for RGB-NIR Sensing. 为 RGB-NIR 感测设计基于深度学习的 Metalens 颜色路由器。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-08 DOI: 10.3390/nano14231973

Hua Mu, Yu Zhang, Zhenyu Liang, Haoqi Gao, Haoli Xu, Bingwen Wang, Yangyang Wang, Xing Yang

引用次数: 0

Ga₂O₃-Based Optoelectronic Memristor and Memcapacitor Synapse for In-Memory Sensing and Computing Applications. 用于内存传感和计算应用的基于 Ga2O3 的光电忆阻器和忆阻器突触。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-08 DOI: 10.3390/nano14231972

Hye Jin Lee, Jeong-Hyeon Kim, Seung Hun Lee, Sung-Nam Lee

{"title":"Ga2O3-Based Optoelectronic Memristor and Memcapacitor Synapse for In-Memory Sensing and Computing Applications.","authors":"Hye Jin Lee, Jeong-Hyeon Kim, Seung Hun Lee, Sung-Nam Lee","doi":"10.3390/nano14231972","DOIUrl":"https://doi.org/10.3390/nano14231972","url":null,"abstract":"This study presents the fabrication and characterization of a dual-functional Pt/Ga2O3/Pt optoelectronic synaptic device, capable of operating as both a memristor and a memcapacitor. We detail the optimized radio frequency (RF) sputtering parameters, including a base pressure of 8.7 × 10-7 Torr, RF power of 100 W, working pressure of 3 mTorr, and the use of high-purity Ga2O3 and Pt targets. These precisely controlled conditions facilitated the formation of an amorphous Ga2O3 thin film, as confirmed by XRD and AFM analyses, which demonstrated notable optical and electrical properties, including light absorption properties in the visible spectrum. The device demonstrated distinct resistive and capacitive switching behaviors, with memory characteristics highly dependent on the wavelength of the applied light. Ultraviolet (365 nm) exposure facilitated long-term memory retention, while visible light (660 nm) supported short-term memory behavior. Paired-pulse facilitation (PPF) measurements revealed that capacitance showed slower decay rates than EPSC, suggesting a more stable memory performance due to the dynamics of carrier trapping and detrapping at the insulator interface. Learning simulations further highlighted the efficiency of these devices, with improved memory retention upon repeated exposure to UV light pulses. Visual encoding simulations on a 3 × 3 pixel array also demonstrated effective multi-level memory storage using varying light intensities. These findings suggest that Ga2O3-based memristor and memcapacitor devices have significant potential for neuromorphic applications, offering tunable memory performance across various wavelengths from ultraviolet to red.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Thermodynamic Analysis of Size-Dependent Surface Energy in Pd Nanoparticles for Enhanced Alkaline Ethanol Electro-Oxidation.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-07 DOI: 10.3390/nano14231966

A Santoveña-Uribe, J Maya-Cornejo, M Estevez, I Santamaria-Holek

{"title":"Thermodynamic Analysis of Size-Dependent Surface Energy in Pd Nanoparticles for Enhanced Alkaline Ethanol Electro-Oxidation.","authors":"A Santoveña-Uribe, J Maya-Cornejo, M Estevez, I Santamaria-Holek","doi":"10.3390/nano14231966","DOIUrl":"https://doi.org/10.3390/nano14231966","url":null,"abstract":"This work investigates the relationship between the mean diameter of palladium (Pd) nanoparticles and their surface energy, specifically in the context of alkaline ethanol electro-oxidation for fuel cell applications. Employing a recent generalization of the classical Laviron equation, we derive crucial parameters such as surface energy (σ), adsorption-desorption equilibrium constant (Keq), and electron transfer coefficient (α) from linear voltammograms obtained from Pd-based nanoparticles supported on Vulcan carbon. Synthesized using two distinct methods, these nanocatalysts exhibit mean diameters ranging from 10 to 41 nm. Our results indicate that the surface energy of the Pd/C nanocatalysts spans σ ~ 0.5-2.5 J/m2, showing a linear correlation with particle size while remaining independent of ethanol bulk concentration. The adsorption-desorption equilibrium constant varies with nanoparticle size (~0.1-6 × 10-6 mol-1) but is unaffected by ethanol concentration. Significantly, we identify an optimal mean diameter of approximately 28 nm for enhanced electrocatalytic activity, revealing critical size-dependent effects on catalytic efficiency. This research contributes to the ongoing development of cost-effective and durable fuel cell components by optimizing nanoparticle characteristics, thus advancing the performance of Pd-based catalysts in practical applications. Our findings are essential for the continued evolution of nanomaterials in fuel cell technologies, particularly in improving efficiency and reducing reliance on critical raw materials.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142838049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Recent Advances in DNA Origami-Enabled Optical Biosensors for Multi-Scenario Application.

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-12-07 DOI: 10.3390/nano14231968

Ziao Hao, Lijun Kong, Longfei Ruan, Zhengtao Deng

{"title":"Recent Advances in DNA Origami-Enabled Optical Biosensors for Multi-Scenario Application.","authors":"Ziao Hao, Lijun Kong, Longfei Ruan, Zhengtao Deng","doi":"10.3390/nano14231968","DOIUrl":"https://doi.org/10.3390/nano14231968","url":null,"abstract":"Over the past few years, significant progress has been made in DNA origami technology due to the unrivaled self-assembly properties of DNA molecules. As a highly programmable, addressable, and biocompatible nanomaterial, DNA origami has found widespread applications in biomedicine, such as cell scaffold construction, antimicrobial drug delivery, and supramolecular enzyme assembly. To expand the scope of DNA origami application scenarios, researchers have developed DNA origami structures capable of actively identifying and quantitatively reporting targets. Optical DNA origami biosensors are promising due to their fast-to-use, sensitive, and easy implementation. However, the conversion of DNA origami to optical biosensors is still in its infancy stage, and related strategies have not been systematically summarized, increasing the difficulty of guiding subsequent researchers. Therefore, this review focuses on the universal strategies that endow DNA origami with dynamic responsiveness from both de novo design and current DNA origami modification. Various applications of DNA origami biosensors are also discussed. Additionally, we highlight the advantages of DNA origami biosensors, which offer a single-molecule resolution and high signal-to-noise ratio as an alternative to traditional analytical techniques. We believe that over the next decade, researchers will continue to transform DNA origami into optical biosensors and explore their infinite possible uses.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 23","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142837909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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