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Total 3421 results found since Jan 2013.
Aurozyme: A Revolutionary Nanozyme in Colitis, Switching Peroxidase ‐Like to Catalase‐Like Activity
This study presents the development of Aurozyme, a gold nanoparticle with glycol chitosan coating, switching its activity from peroxidase-like to catalase-like. Aurozyme effectively scavenges radicals and High-Mobility-Group-Box-1 in inflammatory bowel disease. In colitis-challenged mice, Aurozyme restores intestinal barrier, modulates immune responses, and improves gut microbiota with minimal side effects, offering potential as a multitherapeutic agent for refractory chronic colitis. AbstractA therapeutic strategy that could address colitis of multiple etiologies while restoring the dysbiosis of gut microbiota is attrac...
Source: Small - May 29, 2023 Category: Nanotechnology Authors: Hyung Shik Kim,
Sieun Lee,
Dong Yun Lee Tags: Research Article Source Type: research
Laser ‐Driven Transient Phase Oscillations in Individual Spin Crossover Particles
Spin crossover nanoparticles show length oscillations after exposure to nanosecond laser pulses. The particles undergo repeated transitions between the low- and high-spin state until relaxation in the high-spin state occurs due to energy dissipation. Spin crossover particles are a unique system where a resonant transition between two phases occurs in a phase transformation of first order. AbstractAn unusual expansion dynamics of individual spin crossover nanoparticles is studied by ultrafast transmission electron microscopy. After exposure to nanosecond laser pulses, the particles exhibit considerable length oscillations d...
Source: Small - May 29, 2023 Category: Nanotechnology Authors: Yaowei Hu,
Matthieu Picher,
Marl ène Palluel,
Nathalie Daro,
Eric Freysz,
Laurentiu Stoleriu,
Cristian Enachescu,
Guillaume Chastanet,
Florian Banhart Tags: Research Article Source Type: research
Role of Curvature ‐Sensing Proteins in the Uptake of Nanoparticles with Different Mechanical Properties
Cells possess proteins capable of sensing and inducing membrane curvature during uptake. Here liposomes and liposome-coated silica are used as a model to compare the role of curvature-sensing proteins in the cellular uptake of nanoparticles with different mechanical properties. Understanding the mechanisms of membrane curvature generation involved in nanoparticle uptake by cells can help to improve nanomedicine efficacy. AbstractNanoparticles of different properties, such as size, charge, and rigidity, are used for drug delivery. Upon interaction with the cell membrane, because of their curvature, nanoparticles can bend th...
Source: Small - May 26, 2023 Category: Nanotechnology Authors: Daphne Montizaan,
Catherine Saunders,
Keni Yang,
Sajitha Sasidharan,
Sourav Maity,
Catharina Reker ‐Smit,
Marc C. A. Stuart,
Costanza Montis,
Debora Berti,
Wouter H. Roos,
Anna Salvati Tags: Research Article Source Type: research
Electrochemical Production of Glycolate Fuelled By Polyethylene Terephthalate Plastics with Improved Techno ‐Economics
Valorization of polyethylene terephthalate (PET) plastics into commodity chemicals remains an attractive prospect. In this work, the efficient electrooxidation of real-word PET bottles is implemented to high-value glycolate with high Faradaic efficiency and selectivity in alkaline solution under a low applied potential of 0.55 V over Pt-loadedγ-NiOOH nanosheets grown on nickel foam. AbstractElectrochemical valorization of polyethylene terephthalate (PET) waste streams into commodity chemicals offers a potentially sustainable route for creating a circular plastic economy. However, PET wastes upcycling into valuable C2 pr...
Source: Small - May 26, 2023 Category: Nanotechnology Authors: Mengmeng Du,
Yu Zhang,
Sailei Kang,
Chao Xu,
Yingxin Ma,
Lejuan Cai,
Ye Zhu,
Yang Chai,
Bocheng Qiu Tags: Research Article Source Type: research
Trace Lattice S Inserted RuO2 Flexible Nanosheets for Efficient and Long ‐Term Acidic Oxygen Evolution Catalysis
An electrocatalyst based on S doping Ru/S NSs-400 can demonstrate high activity and stability in a harsh acidic medium. The formation of RuS coordination stabilize Ru from over-oxidation thus improving the stability to 300 h (at 250 mA cm−2) in a proton exchange membrane (PEM) device. This S doping strategy can also improve the stability of the commercial Ru/C and homemade RuO2 nanoparticles. AbstractPursuing highly active and long-term stable ruthenium (Ru) based oxygen evolution reaction (OER) catalyst for water electrolysis under acidic conditions is of great significance yet a tremendous challenge to date. To ...
Source: Small - May 24, 2023 Category: Nanotechnology Authors: Liangbin Liu,
Yujin Ji,
Wentao You,
Shangheng Liu,
Qi Shao,
Qingyu Kong,
Zhiwei Hu,
Huabing Tao,
Lingzheng Bu,
Xiaoqing Huang Tags: Research Article Source Type: research
Hsp70 ‐Targeting and Size‐Tunable Nanoparticles Combine with PD‐1 Checkpoint Blockade to Treat Glioma
This study offeres a potential nanocarrier combining size-tunable strategy with active targeting ability to increase drug enrichment in glioma and synergizes with PD-1 checkpoint blockade to achieve chemo-immunotherapy.
Source: Small - May 24, 2023 Category: Nanotechnology Authors: Rou Xie,
Yufan Wang,
Fan Tong,
Wenqin Yang,
Ting Lei,
Yufan Du,
Xiaorong Wang,
Zixiao Yang,
Tao Gong,
Maxim Shevtsov,
Huile Gao Tags: Research Article Source Type: research
Carbon ‐Doped Nickle Via a Fast Decarbonization Route for Enhanced Hydrogen Oxidation Reaction in Alkaline Media
Carbon doping is successfully applied to the electronic structure modulation of fcc phase Ni electrocatalysts for hydrogen oxidation reaction (HOR), while maintaining a relatively stable cubic crystal structure. Benefiting from carbon doping, the electronic structure is optimized, and the alkaline HOR electrocatalytic activity of carbon doped fcc phase Ni is enhanced. AbstractNickel (Ni) based materials with non-metal heteroatom doping are competitive substitutes for platinum group catalyst toward alkaline hydrogen oxidation reaction (HOR). However, the incorporation of non-metal atom into the lattice of conventional fcc p...
Source: Small - May 22, 2023 Category: Nanotechnology Authors: Peiqi Shen,
Pengcheng Cao,
Yifan Yu,
Lei Wang,
Lei Zhao,
Li Yang,
Yunxiang Lin,
Kun Xu Tags: Research Article Source Type: research
SMART RHESINs —Superparamagnetic Magnetite Architecture Made of Phenolic Resin Hollow Spheres Coated with Eu(III) Containing Silica Nanoparticles for Future Quantitative Magnetic Particle Imaging Applications
In this study, a novel NP architecture that overcomes this limitation by maintaining a virtually unchanged effective relaxation (Brownian plus Néel) even when immobilized is presented. This superparamagnetic magnetite architecture made of phenolic resin hollow spheres coated with Eu(III) containing silica nanop articles (SMARTH RHESINs) was synthesized and studied. Magnetic particle spectroscopy (MPS) measurements confirm their suitability for potential MPI applications. Photobleaching studies show an unexpected photodynamic due to the fluorescence emission peak of the europium ion in combination with th e phenol form...
Source: Small - May 19, 2023 Category: Nanotechnology Authors: Julia Feye,
Jessica Matthias,
Alena Fischer,
David Rudolph,
Jens Treptow,
Radian Popescu,
Jochen Franke,
Annemarie L. Exarhos,
Zoe A. Boekelheide,
Dagmar Gerthsen,
Claus Feldmann,
Peter W. Roesky,
Esther S. R ösch Tags: Research Article Source Type: research
Solar ‐Driven Production Of Hydrogen Peroxide And Benzaldehyde In Two‐Phase System By An Interface‐Engineered Co9S8‐CoZnIn2S4 Heterostructure
This study offers fertile guidelines for creating integrated semiconductors and broadens the avenue toward the coupled production of solar fuels and industrially important chemicals.
Source: Small - May 17, 2023 Category: Nanotechnology Authors: Linqian Li,
Xiaobing Huo,
Shipeng Chen,
Qiang Luo,
Wei Wang,
Yifan Wang,
Ning Wang Tags: Research Article Source Type: research
Nonpolar Solvent Modulated Inkjet Printing of Nanoparticle Self ‐Assembly Morphologies
A nonpolar solvent-modulated inkjet printing of nanoparticles self-assembly patterns driven by the droplet shrinkage and inner solutal convection is proposed. The high resolution of printed microarrays and continuous lines ’ width< 5 and 10 µm are attained, respectively. Multicolor light-emissive upconverting nanoparticles (UCNPs) self-assembly microarrays with the integration of designable microscale morphologies and photoluminescences are realized for multimodal anti-counterfeit. AbstractPatterning of luminescent nanomaterials is critical in the fields of display and information encryption, and inkjet printing tech...
Source: Small - May 16, 2023 Category: Nanotechnology Authors: Dan Guo,
Yanan Xu,
Jun Ruan,
Junhua Tong,
Yixuan Li,
Tianrui Zhai,
Yanlin Song Tags: Research Article Source Type: research
Functionalized Metal –Organic Framework‐Modified Hydrogel That Breaks the Vicious Cycle of Inflammation and ROS for Repairing of Diabetic Bone Defects
In conclusion, the study provides critical insight into the biological mechanism and potential therapy for diabetic bone regeneration.
Source: Small - May 15, 2023 Category: Nanotechnology Authors: An Lao,
Jiaqing Wu,
Dejian Li,
Aili Shen,
Yaxin Li,
Yu Zhuang,
Kaili Lin,
Jianyong Wu,
Jiaqiang Liu Tags: Research Article Source Type: research
Optimizing the Electronic Structure of Atomically Dispersed Ru Sites with CoP for Highly Efficient Hydrogen Evolution in both Alkaline and Acidic Media
This study proposes a tailoring strategy to fabricate high-density Ru SACs (13.87 wt.%) confined in the CoP (NC@RuSA-CoP). The hollow structure ensures adequate exposure to the active sites. CoP modulates the electronic structure of Ru and optimizes the hydrogen adsorption energy on the Ru sites. NC@RuSA-CoP presents excellent HER activity in both acidic and alkaline media and shows the potential to serve as a practical cathode for industrial hydrogen production. AbstractDeveloping efficient and stable electrocatalysts for hydrogen evolution reaction (HER) over a wide pH range and industrial large-scale hydrogen production...
Source: Small - May 15, 2023 Category: Nanotechnology Authors: Zhuoping Wang,
Kai Chi,
Shengxiong Yang,
Junwu Xiao,
Fei Xiao,
Xiaoxu Zhao,
Shuai Wang Tags: Research Article Source Type: research
Elastic Gallium Phosphide Nanowire Optical Waveguides —Versatile Subwavelength Platform for Integrated Photonics
GaP nanowire optical properties are studied in detail to demonstrate the pathways for fabrication of low-loss and subwavelength waveguides for visible and near-infrared ranges. The nanowires exhibit perfect elasticity and stable waveguiding demonstrated via fabrication of an optical X-coupler. The results of the work unveil feasibility for GaP nanowires implementation as elements of advanced photonic schemes. AbstractEmerging technologies for integrated optical circuits demand novel approaches and materials. This includes a search for nanoscale waveguides that should satisfy criteria of high optical density, small cross-se...
Source: Small - May 13, 2023 Category: Nanotechnology Authors: Alexey Kuznetsov,
Eduard Moiseev,
Artem N. Abramov,
Nikita Fominykh,
Vladislav A. Sharov,
Valeriy M. Kondratev,
Ivan I. Shishkin,
Konstantin P. Kotlyar,
Demid A. Kirilenko,
Vladimir V. Fedorov,
Svetlana A. Kadinskaya,
Alexandr A. Vorobyev,
Iva Tags: Research Article Source Type: research
A UV ‐Reflective Organic–Inorganic Tandem Structure for Efficient and Durable Daytime Radiative Cooling in Harsh Climates
An innovative organic –inorganic tandem structure is designed, comprising a bottom high-refractive-index polyethersulfone (PES) layer, a top ultraviolet-reflecting layer of alumina (Al2O3) nanoparticles, and a middle ultraviolet-absorption layer of titanium dioxide (TiO2) nanoparticles. The PES-TiO2-Al2O3 cooler demonstrates a excellent cooling performance, durable UV resistance, and superior superhydrophobicity. This tandem structure can be extended to other polymer-based designs against UV degradation. AbstractRadiative cooling shows great promise in eco-friendly space cooling due to its zero-energy consumption. For su...
Source: Small - May 13, 2023 Category: Nanotechnology Authors: Meng Li,
Chongjia Lin,
Keqiao Li,
Wei Ma,
Benjamin Dopphoopha,
Yang Li,
Baoling Huang Tags: Research Article Source Type: research
Mott –Schottky Effect in Core–Shell W@WxC Heterostructure: Boosting Both Electronic/Ionic Kinetics for Lithium Storage
The W@WxC Mott –Schottky heterojunction with core–shell structure is obtained by double chelation strategy and in situ partial carbonization. A unique Mott–Schottky heterostructure consists of W and WxC, significantly promoting the electronic transfer kinetics. The core –shell structure with abundant heterointerfaces boosts the ionic transport during the lithium storage. This work provides an idea for the development of high energy density lithium-ion battery. AbstractThe dynamics rate of traditional metal carbides (TMCs) is relatively slow, severely limiting its fast-charging capacity for lithium-ion batteries (LI...
Source: Small - May 12, 2023 Category: Nanotechnology Authors: Yao Yang,
Bing Sun,
Yinhong Gao,
Hui Zhu,
Yongting Chen,
Xuanke Li,
Qin Zhang Tags: Research Article Source Type: research
