Results 61 to 70 of about 1,217,458 (328)

Slow oxidation of magnetite nanoparticles elucidates the limits of the Verwey transition

Nature Communications, 2021
The Verwey transition in magnetite has been studied for nearly eight decades since its discovery in the 1940s. Here, Kim et al. elucidate the influence of chemical doping by extremely slow oxidization process with magnetite nanoparticles, revealing why ...
Taehun Kim, Sangwoo Sim, Sumin Lim, Midori Amano Patino, Jaeyoung Hong, Jisoo Lee, Taeghwan Hyeon, Yuichi Shimakawa, Soonchil Lee, J. Paul Attfield, Je-Geun Park   +10 more
doaj   +1 more source

Thermodiffusion in model nanofluids by molecular dynamics simulations

, 2007
In this work, a new algorithm is proposed to compute single particle (infinite dilution) thermodiffusion using Non-Equilibrium Molecular Dynamics simulations through the estimation of the thermophoretic force that applies on a solute particle.
Bird R. B., Bird R. B., Boon J. P., Cussler E. L., de Groot S. R., G. Galliero, Hansen J.-P., Jolly D. L., S. Volz, Zhang M.   +9 more
core   +3 more sources

Metallic nanoparticle on micro ring resonator for bio optical detection and sensing [PDF]

, 2010
We have investigated the unique effects of metallic nanoparticle on the ring resonator, especially multiple Au nanoparticles on the micro ring resonator with the 4-port configuration on chip.
Armani, Arnold, Bayer, Borselli, Bruchez, Evanko, Fan, Forchel, Francois, Gorodetsky, Jensen, Koch, Koch, Little, Loncar, Loo, Mazzei, Moerner, Polman, Song, Vahala, Vollmer, Vollmer, Wiese, Yuan   +24 more
core   +4 more sources

Agglomerates of nanoparticles [PDF]

Beilstein Journal of Nanotechnology, 2020
Nanoparticles tend to agglomerate. The process of agglomeration is ruled by thermodynamics. Depending on the sign of the enthalpy of interaction, ensembles consist of (repelling) poorly agglomerated or (attracting) highly agglomerated particles. For these two cases different distribution functions for the agglomerates were found.
openaire   +3 more sources

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Dynamical density functional theory for the evaporation of droplets of nanoparticle suspension [PDF]

, 2017
We develop a lattice gas model for the drying of droplets of a nanoparticle suspension on a planar surface, using dynamical density functional theory (DDFT) to describe the time evolution of the solvent and nanoparticle density profiles. The DDFT assumes
A.J. Archer, C. Chalmers, Crivoi A., Davis H. T., De Gennes P.-G., Evans R., Hansen J.-P., Kalliadasis S., Kruger T., R. Smith   +9 more
core   +2 more sources

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

Advanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello, Qaisar Nawaz, Pier Francesco Ferrari, Laura Pastorino, Roberto Raiteri, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Facile Synthesis Toward Surface Decorated Ir1Ox@Pd35 with Low Iridium Content for Highly Efficient and Durable Proton Exchange Membrane Water Electrolyzer

ChemElectroChem
Herein, we introduce an iridium‐decorated palladium nanocluster (Ir1Ox@Pd35) synthesized via an epoxide‐assisted sol‐gel method. The nanocluster had a unique surface‐decorated structure, as confirmed by transmission electron microscopy (TEM) and ...
Hosung Choi, Hee Ji Choi, Hyuckjae Choi, Geumbi Na, Jongmin Lee, Shin‐Yeong Kim, Junha Kim, Yoojin Shin, Yong‐Hun Cho, Yung‐Eun Sung   +9 more
doaj   +1 more source

A facile synthetic strategy for iron, aniline-based non-precious metal catalysts for polymer electrolyte membrane fuel cells

Scientific Reports, 2017
The development of a low cost and highly active alternative to the commercial Pt/C catalysts used in the oxygen reduction reaction (ORR) requires a facile and environmentally-friendly synthesis process to facilitate large-scale production and provide an ...
Hyunjoon Lee, Min Jeong Kim, Taeho Lim, Yung-Eun Sung, Hyun-Jong Kim, Ho-Nyun Lee, Oh Joong Kwon, Yong-Hun Cho   +7 more
doaj   +1 more source