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Total 3421 results found since Jan 2013.
Stereolithography 3D Printed Carbon Microlattices with Hierarchical Porosity for Structural and Functional Applications
The combination of stereolithography (SLA) 3D printing, pyrolysis and hard-templating realizes hierarchically porous carbon microlattices (HPCMLs) that possess porosity in four stages: 3D architecture, macro-, meso-, and micropores. HPCMLs exhibit mechanical robustness with strength of 7.45 –10.45 MPa and functionality as extraordinarily thick electrochemical capacitors with areal capacitance as high as 10 F cm−2 simultaneously. AbstractHierarchically porous carbon microlattices (HPCMLs) fabricated by using a composite photoresin and stereolithography (SLA) 3D printing is reported. Containing magnesium oxide nanopart...
Source: Small - August 2, 2023 Category: Nanotechnology Authors: Akira Kudo,
Kazuya Kanamaru,
Jiuhui Han,
Rui Tang,
Kazuaki Kisu,
Takeharu Yoshii,
Shin ‐ichi Orimo,
Hirotomo Nishihara,
Mingwei Chen Tags: Research Article Source Type: research
g295A “Win–Win” Strategy to Modify Co/C Foam with Carbon Microspheres for Enhanced Dielectric Loss and Microwave Absorption Characteristics
The construction of 3D Co/C foam and its surface decoration with carbon microspheres are synchronously achieved by a “win–win” strategy. Both Co nanoparticles and carbon microspheres display good dispersity, which improves the graphitization degree of carbon framework and creates abundant heterogeneous interfaces. As a result, the Co/C foam decorated with carbon microspheres gains enhanced dielectric propert y and microwave absorption performance. Abstract3D carbon foams have demonstrated their superiority in the field of microwave absorption recently, but the preparation processes of traditional graphene foams are c...
Source: Small - August 2, 2023 Category: Nanotechnology Authors: Fengyuan Wang,
Yonglei Liu,
Rida Feng,
Xuan Wang,
Xijiang Han,
Yunchen Du Tags: Research Article Source Type: research
Ciprofloxacin Derivative ‐Loaded Nanoparticles Synergize with Paclitaxel Against Type II Human Endometrial Cancer
CIP2b synergizes with paclitaxel to combat resistant endometrial cancer. CIP2b-loaded nanoparticles (CIP2b NPs) show several-fold higher intracellular uptake in endometrial cancer cells in vitro, and higher intra-tumoral levels of CIP2b in vivo, compared to unencapsulated CIP2b. CIP2b NPs and paclitaxel significantly slow endometrial cancer tumor growth in mice, compared to paclitaxel with drug-free nanoparticles, or paclitaxel with free unencapsulated CIP2b. AbstractCombinations of chemotherapeutic agents comprise a clinically feasible approach to combat cancers that possess resistance to treatment. Type II endometrial ca...
Source: Small - August 1, 2023 Category: Nanotechnology Authors: Youssef W. Naguib,
Suhaila O. Alhaj ‐Suliman,
Emad I. Wafa,
Sanjib Saha,
Kareem Ebeid,
Hamada H. H. Mohammed,
Somaya A. Abdel‐Rahman,
Gamal El‐Din A. Abuo‐Rahma,
Sean M. Geary,
Aliasger K. Salem Tags: Research Article Source Type: research
Synthesis of Free ‐Standing Tin Phosphide/Phosphate Carbon Composite Nanofibers as Anodes for Lithium‐Ion Batteries with Improved Low‐Temperature Performance
Tin phosphide/phosphate nanoparticles uniformly distributed within thecarbon nanofiber matrix have been designed by electrospinning with carbothermal reduction of phosphate-containing precursors. Designed material of unique nanostructure and composition exhibits outstanding electrochemical properties at low temperatures as an anode for lithium-ion batteries, retaining 580 mAh g−1 capacity after 100 cycles at −20 °C using commercial electrolyte without any additives. AbstractFree-standing tin phosphide/phosphate carbon composite nanofiber mats of unique nanostructure have been successfully synthesized by electrospinnin...
Source: Small - July 29, 2023 Category: Nanotechnology Authors: Ayaulym Belgibayeva,
Makpal Rakhatkyzy,
Aiym Rakhmetova,
Gulnur Kalimuldina,
Arailym Nurpeissova,
Zhumabay Bakenov Tags: Research Article Source Type: research
Plasmon ‐Driven Photochemical Reduction Reaction on Silver Nanostructures for Green Fabrication of Superhydrophobic Surface
A nano-Ag coating with strong localized surface plasmon resonance (LSPR) in the ultraviolet light (UVA) region is prepared by a water-based silver mirror reaction. UVA irradiation triggers a LSPR-driven reduction reaction, which transforms the hydrophilic absorbates on Ag nanoparticles (NPs) into hydrophobic moieties. Consequently, the generated hydrophobic moieties and hierarchical roughness result in the formation of stable superhydrophobic surface. AbstractGreen fabrication of superhydrophobic surface by water-based processing is still challenging, because introduction of the substances with hydrophilic moieties comprom...
Source: Small - July 29, 2023 Category: Nanotechnology Authors: Shengmao Chao,
Hong Shao,
Xiao Wang,
Yongzheng Zhang,
Ruifeng Jiang,
Meikun Fan,
Shuwei Chen,
Changyu Tang Tags: Research Article Source Type: research
Stabilize Sodium Metal Anode by Integrated Patterning of Laser ‐Induced Graphene with Regulated Na Deposition Behavior
A novel sodium metal anode host with sodiophilic Sn nanoparticles-anchored laser-induced graphene on copper foil is designed and fabricated by a facile and highly-efficient laser-induced technique, and the sodium deposition behavior in it is regulated and investigated by DFT calculations and in situ optical microscopy observation. Such an integrated patterning structure enables dendrite-free Na deposition and outstanding electrochemical performances. AbstractMetallic sodium is regarded as the most potential anode for sodium-ion batteries due to its high capacity and earth-abundancy. Nevertheless, uncontrolled Na dendrite g...
Source: Small - July 27, 2023 Category: Nanotechnology Authors: Hong Xiao,
Yijuan Li,
Weizhao Chen,
Tangchao Xie,
Hengji Zhu,
Weitao Zheng,
Jialang He,
Shaoming Huang Tags: Research Article Source Type: research
Low Forces Push the Maturation of Neural Precursors into Neurons (Small 30/2023)
Neural Stem CellsNeural progenitor cells (NPCs, green) are labelled with magnetic nanoparticles to make them magneto-responsive. When NPCs are transplanted in the mouse spinal cord tissue (red), an external magnetic field can be used to promote growth and guidance of their neural processes in the desired direction. More details can be found in article number2205871 by Sara De Vincentiis, Vittoria Raffa, and co-workers.
Source: Small - July 26, 2023 Category: Nanotechnology Authors: Sara De Vincentiis,
Matteo Baggiani,
Francesca Merighi,
Valentina Cappello,
Jakub Lopane,
Mariachiara Di Caprio,
Mario Costa,
Marco Mainardi,
Marco Onorati,
Vittoria Raffa Tags: Frontispiece Source Type: research
Self ‐Assembly of Selenium‐Doped Carbon Quantum Dots as Antioxidants for Hepatic Ischemia‐Reperfusion Injury Management (Small 30/2023)
Hepatic Ischemia-Reperfusion Injury ManagementSelenium-doped carbon quantum dots (Se-CQDs) with excellent anti-oxidation capability protect hepatocytes from apoptosis by limiting damage from oxidative stress. Se-CQDs-lecithin nanoparticles are developed through a supramolecular self-assembly mainly driven by noncovalent interactions, which effectively scavenge reactive oxygen species and inhibit the release of inflammatory cytokines, thus exerting beneficial therapeutic efficacy on hepatic ischemia-reperfusion injury. More details can be found in article number2300217 by Yu Xia, Huaping Xu, Guocan Yu, Zuobing Chen, and co-workers.
Source: Small - July 26, 2023 Category: Nanotechnology Authors: Bing Bai,
Shaolong Qi,
Kai Yang,
Xinyang Yu,
Ruijun Jian,
Tianfang Zhang,
Daming Wang,
Hongbo Meng,
Yifan Zhao,
Yu Xia,
Huaping Xu,
Guocan Yu,
Zuobing Chen Tags: Frontispiece Source Type: research
A Nanoparticle Ink Allowing the High Precision Visualization of Tissue Engineered Scaffolds by MRI (Small 30/2023)
Ultra-Small Iron Oxide NanoparticlesIn article number2206644, Marc-Andr é Fortin and co-workers develop a magnetic ink based on ultra-small iron oxide nanoparticles (USPIONs) that are integrated into biocompatible alginate hydrogel used in cell scaffolding applications. This approach establishes the possibility to reveal precisely without image artifacts engineered hyd rogel structures in vivo by using magnetic resonance imaging (MRI) inT1-weighted mode.
Source: Small - July 26, 2023 Category: Nanotechnology Authors: Samila Leon ‐Chaviano,
Mariia Kiseleva,
Philippe Legros,
Simon Collin,
Théophraste Lescot,
Céline Henoumont,
Yves Gossuin,
Sophie Laurent,
Dominique Mayrand,
Julie Fradette,
André Bégin‐Drolet,
Jean Ruel,
Marc‐André Fortin Tags: Back Cover Source Type: research
Gold Nanoparticle ‐Carrying T Cells for the Combined Immuno‐Photothermal Therapy
In this study, a strategy to boost therapeutic efficacy by combining an immunotherapy based on ex vivo expanded tumor-reactive T cells is devised, or adoptive cell therapy (ACT), with photothermal therapy (PTT). Smart gold nanoparticles (sAuNPs), which aggregates to form gold nanoclusters in the cells, are loaded into T cells, and their photothermal effects within T cells are confirmed. When transferred into tumor-bearing mice, large number of sAuNP-carrying T cells successfully infiltrate into tumor tissues and exert anti-tumor activity to suspend tumor growth, but over time tumor cells evade and regrow. Of note, ≈20% o...
Source: Small - July 26, 2023 Category: Nanotechnology Authors: HyeMi Kim,
Yujin Baek,
Taeyong Ha,
Doowon Choi,
Woo Jin Lee,
Yongbum Cho,
Jeehun Park,
Sungjee Kim,
Junsang Doh Tags: Research Article Source Type: research
Light ‐Driven Spatiotemporal Pickering Emulsion Droplet Manipulation Enabled by Plasmonic Hybrid Microgels
Plasmonic hybrid microgels are assembled by electrostatic heterocoagulation between oppositely charged microgels and Au nanoparticles, and can stabilize oil-in-water Pickering emulsions and enable precise manipulation of droplet behaviors by laser irradiation. The presented system may open new possibilities for on-demand substance transport, programmed release, and controlled catalytic reactions. AbstractThe past decades have witnessed the development of various stimuli-responsive materials with tailored functionalities, enabling droplet manipulation through external force fields. Among different strategies, light exhibi...
Source: Small - July 25, 2023 Category: Nanotechnology Authors: Xin Guan,
Guangyao Cheng,
Yi ‐Ping Ho,
Bernard P. Binks,
To Ngai Tags: Research Article Source Type: research
DNA Nanoflower Eye Drops with Antibiotic ‐Resistant Gene Regulation Ability for MRSA Keratitis Target Treatment
Development of an eye-drop system for chemo-gene therapy targeting methicillin-resistantStaphylococcus aureus (MRSA) biofilm-associated bacterial keratitis. DNA nanoflowers (DNFs) loaded with MRSA-specific aptamers and DNAzymes are used to penetrate biofilms and regulate MRSA resistance gene mecR1 gene expression. The system effectively eliminated MRSA, cleared biofilms, and reduced inflammation, offering a promising treatment approach. AbstractMethicillin-resistantStaphylococcus aureus (MRSA) biofilm-associated bacterial keratitis is highly intractable, with strong resistance to β-lactam antibiotics. Inhibiting the MRSA ...
Source: Small - July 25, 2023 Category: Nanotechnology Authors: Meixin Ran,
Rong Sun,
Jiaqi Yan,
Arto T. Pulliainen,
Yu Zhang,
Hongbo Zhang Tags: Research Article Source Type: research
Manipulating Redox Kinetics using p ‐n Heterojunction Biservice Matrix as both Cathode Sulfur Immobilizer and Anode Lithium Stabilizer for Practical Lithium–Sulfur Batteries
A p-n-type heterostructure consisting of n-type MoS2 nanoflowers with embeddedp-type NiO nanoparticles is designed on carbon nanofibers (NiO –MoS2@CNFs) as biservice hosts for both sulfur/lithium electrodes in lithium –sulfur (Li–S) batteries. The p-n junction presents reinforced ability for LiPS/Li+ adsorption and catalytic conversion/deposition of each component. The full Li –S batteries deliver excellent electrochemical properties under lean-electrolyte and increased sulfur loading. AbstractAs an attractive high-energy-density technology, the practical application of lithium –sulfur (Li–S) batteries is sever...
Source: Small - July 24, 2023 Category: Nanotechnology Authors: Xiaohang Du,
Chenxu Wen,
Yuhong Luo,
Dan Luo,
Tingzhou Yang,
Lanlan Wu,
Jingde Li,
Guihua Liu,
Zhongwei Chen Tags: Research Article Source Type: research
Insights on the Roles of Nitrogen Configuration in Enhancing the Performance of Electrocatalytic Methanol Oxidation over Pt Nanoparticles
Under the guidance of theoretical calculations, the intrinsic mechanisms of different N configurations in enhancing the electrocatalytic methanol oxidation over Pt nanoparticles (NPs) are elucidated for the first time. The synergistic interaction of pyrrolic-N and Pt promotes the adsorption and activation of CH3OH, and the synergistic effect between pyridinic-N and Pt accelerates the oxidation of COads and promotes the MOR kinetics. AbstractStabilization of the Pt in N-doped carbon materials is an effective method to improve the performance of electrocatalytic methanol oxidation reaction (MOR). Nevertheless, the roles of d...
Source: Small - July 22, 2023 Category: Nanotechnology Authors: Yanru Li,
Hongwei Li,
Yan Zhao,
Dong Ji,
Peng Guo,
Guixian Li,
Xinhong Zhao Tags: Research Article Source Type: research
Freestanding, Freeform Metamolecule Fibers Tailoring Artificial Optical Magnetism
In this work, the freeform, freestanding raspberry-like metamolecule (RMM) fibers based on the directional guidance of a femtoliter meniscus are presented, resulting in the evaporative co-assembly of silica nanoparticles and gold nanoparticles with the aid of 3D nanoprinting. our method offers a facile and universal pathway to shape RMM fibers in 3D, enabling versatile manipulation of near- and far-field characteristics. AbstractMetamolecule clusters support various unique types of artificial electromagnetism at optical frequencies. However, the technological challenges regarding the freeform fabrication of freestanding me...
Source: Small - July 22, 2023 Category: Nanotechnology Authors: Won ‐Geun Kim,
Hongyoon Kim,
Byoungsu Ko,
Nara Jeon,
Cherry Park,
Jin‐Woo Oh,
Junsuk Rho Tags: Research Article Source Type: research
