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Total 3421 results found since Jan 2013.
Assembly of Metal –Phenolic Networks onto Microbubbles for One‐Step Generation of Functional Microcapsules
A soft-template strategy is developed to prepare functional metal –phenolic networks microcapsules by coordination assembly of polyphenol and metal ions onto bovine serum albumin microbubbles (BSA MBs). BSA MBs serve as both templates and carriers of functional species, which allow for pre-encapsulation of functional species without template removal and thereby make them more suitable for the preloading of biological functional molecules. AbstractThe one-step assembly of metal –phenolic networks (MPNs) onto particle templates can enable the facile, rapid, and robust construction of hollow microcapsules. However, the re...
Source: Small - August 29, 2023 Category: Nanotechnology Authors: Xin Tan,
Renwang Sheng,
Zonghao Liu,
Weikun Li,
Renqiang Yuan,
Yinghua Tao,
Ning Yang,
Liqin Ge Tags: Research Article Source Type: research
H2O2 ‐Induced Persistent Luminescence Signal Enhancement Applied to Biosensing
After UV excitation, a suspension of zinc gallium oxide doped with Cr3+ (ZGO) can emit light at 695 nm for several minutes. The signal intensity can be enhanced in presence of H2O2. Such phenomenon can be used for the dosage of H2O2 and of any molecule able of producing H2O2 in the presence of appropriate enzymes. AbstractPersistent luminescence nanoparticles (PLNPs) are innovative materials able to emit light for a long time after the end of their excitation. Thanks to this property, their detection can be separated in time from the excitation, making it possible to obtain images with a high signal-to-noise ratio. This op...
Source: Small - August 28, 2023 Category: Nanotechnology Authors: Jianhua Liu,
Bruno Viana,
Nathalie Mignet,
Daniel Scherman,
Yingshuai Liu,
Cyrille Richard Tags: Research Article Source Type: research
Ultrafine Pt Nanoparticles Anchored on 2D Metal−Organic Frameworks as Multifunctional Electrocatalysts for Water Electrolysis and Zinc–Air Batteries
Structurally stable Pt@Fe-MOF nanoarrays with trifunctional electrocatalytic activities are fabricated, displaying low water electrolysis voltage of 1.65 V at 100 mA cm−2 with long-term stability for 20 h at high temperatures (65 °C), and showing high open-circuit voltage (1.397 V) and decent cycling stability of rechargeable Zn–air batteries. AbstractMultifunctional electrocatalysts are crucial to cost-effective electrochemical energy conversion and storage systems requiring mutual enhancement of disparate reactions. Embedding noble metal nanoparticles in 2D metal –organic frameworks (MOFs) are proposed as a...
Source: Small - August 28, 2023 Category: Nanotechnology Authors: Chao ‐Peng Wang,
Xin Lian,
Yu‐Xuan Lin,
Lei Cui,
Chen‐Ning Li,
Na Li,
An‐Ni Zhang,
Jun Yin,
Joohoon Kang,
Jian Zhu,
Xian‐He Bu Tags: Research Article Source Type: research
Extending the In Vivo Residence Time of Macrophage Membrane ‐Coated Nanoparticles through Genetic Modification
This study employs a genetic engineering approach to enhance their in vivo residence times, aiming to further improve their performance. Specifically, macrophages are engineered to express proline-alanine-serine (PAS) peptide chains, which provide additional protection against opsonization and phagocytosis. The resulting modified nanoparticles demonstrate prolonged residence times when administered intravenously or introduced intratracheally, surpassing those coated with the wild-type membrane. The longer residence times also contribute to enhanced nanoparticle efficacy in inhibiting inflammatory cytokines in mouse models ...
Source: Small - August 28, 2023 Category: Nanotechnology Authors: Yaou Duan,
Jiarong Zhou,
Zhidong Zhou,
Edward Zhang,
Yiyan Yu,
Nishta Krishnan,
Daniela Silva ‐Ayala,
Ronnie H. Fang,
Anthony Griffiths,
Weiwei Gao,
Liangfang Zhang Tags: Research Article Source Type: research
Manganese ‐Based Immunomodulatory Nanocomposite with Catalase‐Like Activity and Microwave‐Enhanced ROS Elimination Ability for Efficient Rheumatoid Arthritis Therapy
The authors have successfully developed a hierarchical and multifunctional UMnEH nanoplatform as the immunomodulatory nanosystem (IMN). Assisted by MW irradiation, UMnEH can significantly increase the oxygen content and then down-regulate the expression of HIF-1 α, accompanied by the clearance of reactive oxygen species (ROS) to achieve the polarization of macrophages from M1 to M2 phenotype, which has exciting prospects in the treatment of RA. AbstractRheumatoid arthritis (RA) is a chronic autoimmune disease commonly associated with the accumulation of hyperactive immune cells (HICs), particularly macrophages of pro-infl...
Source: Small - August 26, 2023 Category: Nanotechnology Authors: Xiaotong Chen,
Lianying Zhang,
Haifeng Zeng,
Wei Meng,
Guijiang Liu,
Wenhua Zhang,
Pei Zhao,
Qun Zhang,
Ming Chen,
Jinxiang Chen Tags: Research Article Source Type: research
Lotus Leaf Derived NiS/Carbon Nanofibers/Porous Carbon Heterogeneous Structures for Strong and Broadband Microwave Absorption
Benefiting from conduction loss, interfacial polarization, magnetic loss, defect polarization, and optimized impedance matching, the sample demonstrates a minimal reflection loss of −67.65 dB with a thickness of 2.32 mm and a broad effective absorption bandwidth of 5.9 GHz at merely 2.07 mm, and the CST simulation indicates the application prospects of LNSF in practical. AbstractDeveloping composite materials with the synergistic effects of heterogeneous structures and multiple components is considered as a promising strategy to achieve high-performance electromagnetic wave (EMW) absorbers. To further satisfy the demand ...
Source: Small - August 26, 2023 Category: Nanotechnology Authors: Haotian Jiang,
Chengjuan Wang,
Bowen Cui,
Xiaodan Xu,
Mengfan Li,
Zhenhao Xu,
Hongxue Tan,
Chengguo Wang,
Yanxiang Wang Tags: Research Article Source Type: research
Journey of Mineral Precursors in Bone Mineralization: Evolution and Inspiration for Biomimetic Design
During bone mineralization, organisms tightly control the formation, stabilization, and phase transition of amorphous mineral precursors through the synergy of ions, biomolecules, and metabolic activities. The in vivo mineralization “on-off” control mechanisms are also an inspiration for the design of mineral precursor-based biomaterials, which are used as coatings, cements, hydrogels, and nanoparticles for bone regeneration. AbstractBone mineralization is a ubiquitous process among vertebrates that involves a dynamic physical/chemical interplay between the organic and inorganic components of bone tissues. It is now we...
Source: Small - August 25, 2023 Category: Nanotechnology Authors: Yuchen Zhang,
Shaoyang Ma,
Jiaming Nie,
Zhongbo Liu,
Faming Chen,
Ang Li,
Dandan Pei Tags: Review Source Type: research
Structural and Interfacial Manipulation of Multifunctional Skeletons Enabled Shuttling ‐Free and Dendrite‐Free Li–S Full Batteries
Hierarchically assembled Nb-based micro-nanospheres are rationally designed and masterly synthesized via a structural and interfacial manipulation strategy and employed as multifunctional skeletons for cathode and anode of Li –S fell cells. Benefiting from the unique structure, the polysulfides shuttling in sulfur cathode and dendrite growth of lithium anode can be effectively regulated simultaneously. AbstractLi –S batteries are regarded as promising devices for energy storage systems owing to high energy density, low cost, and environmental friendliness. However, challenges of polysulfides shuttling in sulfur cathode...
Source: Small - August 24, 2023 Category: Nanotechnology Authors: Miaomiao Zhang,
Rongjie Luo,
Qifei Guo,
Zihuan Tang,
Xingxing Li,
Biao Gao,
Xuming Zhang,
Kaifu Huo,
Yang Zheng Tags: Research Article Source Type: research
Identifying the Structure of Supported Metal Catalysts Using Vibrational Fingerprints from Ab Initio Nanoscale Models (Small 34/2023)
Pd NanocatalystsCeria-supported palladium nanoparticles exposed to carbon monoxide have been investigated by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) measurements and density functional theory (DFT) calculations. The molecular vibrations of the CO adsorbates and related infrared intensities have been used as a marker for identifying the structure of the catalyst by comparing experiments and theoretical predictions. More details can be found in article number2300945 by David Loffreda and co-workers.
Source: Small - August 23, 2023 Category: Nanotechnology Authors: Agustin Salcedo,
Deniz Zengel,
Florian Maurer,
Maria Casapu,
Jan ‐Dierk Grunwaldt,
Carine Michel,
David Loffreda Tags: Frontispiece Source Type: research
Controllable Fabrication of Highly Uniform Sub ‐10 nm Nanoparticles from Spontaneous Confined Nanoemulsification (Small 34/2023)
Polymeric NanoparticlesIn article number2300801, Liang-Yin Chu, Wei Wang, and co-workers develop a spontaneous confined nanoemulsification strategy to facilely fabricate sub-10 nm uniform polymeric nanoparticles by template synthesis of nanoemulsions. The strategy employs a self-confined reaction with highly accumulated surfactants in chemically-active droplets to achieve enhanced molecular-level interfacial instability for creating sub-10 nm nanodroplets, and allows controllable fabrication of uniform sub-10 nm polymeric nanoparticles with efficient drug encapsulation in continuous, scalable and low-energy manner.
Source: Small - August 23, 2023 Category: Nanotechnology Authors: Chen Chen,
Quan ‐Wei Cai,
Cai‐Zhen Zhan,
Bi‐Cong Wang,
Ping‐Fan Li,
Rui Xie,
Xiao‐Jie Ju,
Zhuang Liu,
Wei Wang,
Liang‐Yin Chu Tags: Inside Back Cover Source Type: research
Engineered Extracellular Vesicles to Enhance Antigen Presentation for Boosting Light ‐Driven Tumor Immunotherapy
Engineering strategy is employed to obtain Te nanoparticles-encapsulated extracellular vesicles with high heat shock protein 70 expression. These nanoparticles can damage tumor cells and induce immunogenic cell death under light drive, subsequently capturing more tumor-associated antigens. Dendritic cells present more tumor-associated antigens to CD8+ T cells after uptake of nanoparticles, achieving enhanced anti-tumor immunity. AbstractExtracellular vesicles (EVs) have emerged as potential tools for tumor-target therapy accompanied with activating anticancer immune responses by serving as an integrated platform, but usual...
Source: Small - August 23, 2023 Category: Nanotechnology Authors: Xuyu Li,
Shuaicheng He,
Ban Luo,
Puze Li,
Xue Chen,
Meichan Wu,
Cheng Song,
Chao Liu,
Tian Yang,
Xiaojuan Zhang,
Xiangliang Yang,
Jun Hu Tags: Research Article Source Type: research
NiCo2O4/Hollow Mesoporous Carbon Nanosphere Hybrids Enabling Super ‐Hydrophobicity, Thermal Insulation, and Highly Efficient Microwave Absorption
Here, a reverse strategy is provided based on the capillary force of pore structures to realize the controllable anchored growth of NiCo2O4 inside and outside hollow mesoporous carbon nanospheres. The proposed scheme simplifies the synthesis process of 2D magnetic nanosheets/carbon-based absorbers. The functionalized absorption coating with super-hydrophobic property and thermal insulation is successfully prepared using the optimized spraying process. AbstractThe combination of 2D magnetic nanosheets and mesoporous carbon with unique interfaces shows considerable prospects for microwave absorption (MA). However, traditiona...
Source: Small - August 22, 2023 Category: Nanotechnology Authors: Wenjun Ma,
Peng He,
Yukang Zhou,
Chao Xie,
Yi Chen,
Xiaoyun Liu,
Shaoliang Lin,
Peiyuan Zuo,
Qixin Zhuang Tags: Research Article Source Type: research
SERS Sensing of Dopamine with Fe(III) ‐Sensitized Nanogaps in Recleanable AuNP Monolayer Films
Surface-enhanced Raman spectroscopy (SERS) sensing of dopamine down to nm concentration is demonstrated using self-assembled monolayers of plasmonic Au nanoparticles sensitized with Fe(III) for multiplicative SERS enhancement. Since they are deposited onto glass, this configuration allows for double-sided access, enabling simultaneous flow and optical sensing. The repeated reusability after analyte sensing is demonstrated through oxygen plasma cleaning protocols. AbstractSensing of neurotransmitters (NTs) down to nm concentrations is demonstrated by utilizing self-assembled monolayers of plasmonic 60 nm Au nanoparticles ...
Source: Small - August 22, 2023 Category: Nanotechnology Authors: Marika Niihori,
Tam ás Földes,
Charlie A Readman,
Rakesh Arul,
David‐Benjamin Grys,
Bart de Nijs,
Edina Rosta,
Jeremy J Baumberg Tags: Research Article Source Type: research
Bone Homeostasis Modulating Orthopedic Adhesive for the Closed ‐Loop Management of Osteoporotic Fractures
The orthopedic GMOS/K@M adhesive excels in splicing fracture fragments and facilitating osteoporotic fracture fixation using a non-invasive approach. GMOS/K@M adhesive, doped with mesoporous bioactive glass nanoparticles (MBGNs) and loaded with kaempferol, effectively treats osteoporotic fractures in a closed-loop management by restoring bone homeostasis through pro-osteogenic and anti-osteoclastic effects. AbstractPatients with osteoporotic fractures often require effective fixation and subsequent bone repair. However, currently available materials are often limited functionally, failing to improve this cohort's outcomes....
Source: Small - August 22, 2023 Category: Nanotechnology Authors: Can Liu,
Weilu Liu,
Baoyu Qi,
Lei Fan,
Shencai Liu,
Qinfeng Yang,
Yusheng Yang,
Shuofei Yang,
Yili Zhang,
Xu Wei,
Liguo Zhu Tags: Research Article Source Type: research
Engineering 2D MXene and LDH into 3D Hollow Framework for Boosting Photothermal Energy Storage and Microwave Absorption
Benefiting from the 3D conductive network and the synergistic localized surface plasmon resonance effect of MXene and Co, C-LDH@MXene-PW composite PCM yields a high photothermal storage efficiency. Besides, it also exhibits excellent microwave absorption properties due to the optimal balance between impedance matching and high loss properties achieved by the integration of dielectric loss MXene and magnetic loss Co. Abstract2D MXene is highly preferred for photothermal energy conversion and microwave absorption. However, the aggregation issue, insufficient dielectric loss capacity, and lack of magnetic loss capacity for MX...
Source: Small - August 22, 2023 Category: Nanotechnology Authors: Yan Gao,
Jinjie Lin,
Xiao Chen,
Zhaodi Tang,
Geng Qin,
Ge Wang Tags: Research Article Source Type: research
