Review
Chemistry, Physical
Rupresha Deb, Bhaskarjyoti Sarma, Amaresh Dalal
Summary: The behavior of ferrofluids in a magnetic field has intrigued researchers for many years and has found applications in various fields. Recent studies have focused on understanding the shape and contact line dynamics of sessile ferrofluid droplets in different magnetowetting scenarios. The role of magnetic nanoparticles, carrier fluid, and the interaction between the magnetic fluid and solid surfaces have been explored. A systematic review of the progress made in magnetowetting in the past decade would be beneficial to the scientific community.
Article
Mathematics, Applied
Andrey Yu Zubarev, Anton Yu Musikhin, Pavel Kuzhir, Maxime Raboisson-Michel, Gregory Verger-Dubois
Summary: We propose a mathematical model and an approximate solution method for circulating flows induced by an alternating magnetic field in a channel filled with a non-magnetic liquid and injected with a soluble ferrofluid drop. The model imitates a thrombosed blood vessel and aims to provide a mathematical background for enhancing thrombolytic transport in thrombosed vessels using an alternating magnetic field.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2022)
Article
Physics, Multidisciplinary
A. Yu. Zubarev, A. Yu. Musikhin
Summary: The paper presents a theoretical study on the circulating flow in a channel filled with a non-magnetic liquid and an injected drop of a soluble ferrofluid under the influence of a uniform rotating magnetic field. The aim of this study is to develop a scientific understanding of drag transport intensification in thrombosed blood vessels. The results demonstrate that under realistic parameters, circulating flow with a velocity of approximately one hundred millimeters per second can be generated in a channel with a thickness of several millimeters. This can significantly enhance molecular transport (thrombolytics) in the channel.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2023)
Article
Chemistry, Physical
S. Mawet, H. Caps, S. Dorbolo, F. Elias
Summary: The deformation of hemispherical sessile bubbles made of ferrofluid soap under vertical uniform magnetic fields was studied. The meniscus was found to bear most of the deformation, reshaping into a cylinder, with the remainder of the bubble forming a spherical cap. A simple model was used to rationalize the growth of the meniscus height, showing that the meniscus shape depends on the competition between capillary, gravity and magnetic effects.
Article
Thermodynamics
Pariya Akbari, Masoud Haghshenasfard, Mohsen Nasr Esfahany, Mohammadreza Ehsani
Summary: The gas absorption process in a Y-shaped microchannel using magnetic nanofluids stimulated within an AC magnetic field was investigated. The study analyzed the effects of operation conditions, ferrofluid concentration, and magnetic field strengths on the absorption efficiency and mass transfer coefficient. Additionally, the position of the microchannel in the magnetic field was found to affect CO2 absorption enhancement.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Chemical
Amin Shahsavar, Mehdi Jamei, Masoud Karbasi
Summary: Experiments in the study focus on investigating the impact of shear rate, nanoparticle concentration, and magnetic field induction on the viscosity of water-Fe3O4 magnetic nanofluid (MNF). Results show a complex relationship between these factors and viscosity. A novel machine learning model, Grid-KRR, is developed for accurately predicting viscosity based on input features such as nanoparticle volume fraction, shear rate, and magnitude of external magnetic field. Performance evaluation indicates that the Grid-KRR model outperforms other models like Random Forest and Gene expression programming.
Article
Chemistry, Multidisciplinary
Fang Chen, Xiaobing Liu, Zhenggui Li, Shengnan Yan, Hao Fu, Zhaoqiang Yan
Summary: The rheological properties of PFPE oil-based ferrofluids were studied in this research, revealing changes in activity from Newtonian to non-Newtonian to solid-like with increasing w from 10 wt% to 45.5 wt%. The viscosity of the ferrofluids was found to increase with increasing M-w, attributed to entanglements between PFPE oil molecules. The viscosity temperature change in ferrofluids was influenced by both the magnetization temperature variation of Zn-ferrite nanoparticles and viscosity temperature variation of PFPE oil.
Article
Engineering, Electrical & Electronic
Jie Yao, Jiameng Liu, Yang Hu, Zhenkun Li, Decai Li
Summary: This paper presents an inertial sensor that utilizes the self-levitation of a magnetic object in ferrofluids. The absorbed ferrofluid on the magnetic object creates an unusual buoyant force that counters gravity and acts as an elastic force. The analysis of the buoyant force is crucial in achieving excellent static performance for the sensor.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Physical
M. Khani, M. Haghshenasfard, N. Etesami, M. R. Talaei
Summary: The performance of a venturi scrubber is greatly affected by the magnetic field strength and ferrofluid concentration, with increasing magnetic field strength leading to higher CO2 absorption rates and lower pressure drops. Increasing the ferrofluid concentration also enhances CO2 absorption, with potential for significant improvements in CO2 removal percentage.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Physics, Applied
Xingfei Xie, Qingwen Dai, Wei Huang, Xiaolei Wang
Summary: This paper investigates the supporting capacity of a ferrofluids ring bearing, finding that the magnetic force plays a dominating role in the total supporting force. Such a liquid ring support may have potential applications for frictionless bearings or precision positioning systems.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Mechanics
Jyun-Chen Shih, Hong-Yu Chu
Summary: This study reports the stretch-shrink-rotation motion of a ferrofluid drop in a time-varying magnetic field along the x direction. The drop undergoes stretch and shrink motion at low magnetic field and rotating motion at high magnetic field. The growth rate of rotating angle for the stretched drop is characterized and the transitions of the size of the elongated drop are observed at specific frequencies. The phase diagram reveals the threshold for drop rotation and suggests the association of induced transverse magnetization with the phase lag between the magnetic field and drop deformation.
Article
Mathematics, Applied
Zouhaier Mehrez, Afif El Cafsi
Summary: The study showed that the heat exchange and flow behaviors of Fe3O4/water nanofluid in a horizontal channel are significantly altered by the application of a magnetic field, creating a recirculation region near the magnetic source and enhancing local heat exchange. The overall heat exchange can be enhanced by suspending nanoparticles and increasing magnetic strength.
APPLIED MATHEMATICS AND COMPUTATION
(2021)
Article
Mechanics
Adnan Khan, Hiroshi Yamaguchi
Summary: This study numerically investigates the Rosensweig instability of a ferrofluid-infused surface and examines the effects of overlayer thickness, substrate pore size, and magnetic field strength. The results provide important insights for understanding and controlling the dynamic behavior of ferrofluids on surfaces.
Article
Thermodynamics
Guolong Li, Jin Wang, Hongxing Zheng, Gongnan Xie, Bengt Sunden
Summary: This study investigates the convective heat transfer enhancement of Fe3O4-water nanofluid by introducing carbon nanotubes and applying a magnetic field. The results show significant improvement in heat transfer performance by adding carbon nanotubes to the nanofluid and subjecting it to a magnetic field under certain experimental conditions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Meibo Xing, Chaofu Jia, Hongbing Chen, Ruixiang Wang, Longxiang Wang
Summary: Water-based ferrofluid with Fe3O4 nanoparticles decorated multi-walled carbon nanotubes nanocomposite was synthesized and studied for solar photo-thermal energy conversion. The results showed that the axial arrangement of multi-walled carbon nanotubes and the introduction of a magnetic field can effectively enhance the photo-thermal conversion efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Analytical
Alessio Meggiolaro, Sebastian Cremaschini, Davide Ferraro, Annamaria Zaltron, Mattia Carneri, Matteo Pierno, Cinzia Sada, Giampaolo Mistura
Summary: The actuation of droplets on a surface is crucial for microfluidic applications. One promising solution is to use iron-doped lithium niobate crystals to generate an evanescent electric field that controls the motion of water droplets. This study presents an experimental method to determine the attractive force exerted by the evanescent field and demonstrates the importance of these measurements for the design and characterization of optofluidic devices based on lithium niobate crystals.
Article
Physics, Multidisciplinary
Paolo Sartori, Davide Ferraro, Marco Dassie, Alessio Meggiolaro, Daniele Filippi, Annamaria Zaltron, Matteo Pierno, Giampaolo Mistura
Summary: This study investigates the motion of small drops of polymeric fluids deposited on inclined lubricated surfaces. It is found that drops of sufficiently elastic fluids move downward with an oscillating instantaneous speed. The oscillatory motion is caused by the formation of a bulge at the rear of the drop, which will be dragged along the drop free contour by the rolling motion undergone by the drop.
COMMUNICATIONS PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Annamaria Zaltron, Davide Ferraro, Alessio Meggiolaro, Sebastian Cremaschini, Mattia Carneri, Enrico Chiarello, Paolo Sartori, Matteo Pierno, Cinzia Sada, Giampaolo Mistura
Summary: This article presents an optofluidic platform for the actuation and control of liquid droplets. The platform uses iron-doped lithium niobate crystals and a lubricant-infused layer to easily manipulate droplets. It is highly flexible and reconfigurable, without the need for moving parts.
ADVANCED MATERIALS INTERFACES
(2022)
Review
Chemistry, Analytical
Alessio Meggiolaro, Valentina Moccia, Paola Brun, Matteo Pierno, Giampaolo Mistura, Valentina Zappulli, Davide Ferraro
Summary: Extracellular vesicles (EVs) are receiving considerable attention in the biological and medical fields due to their role as natural carriers of genetic information and their potential as diagnostic and prognostic biomarkers in various diseases. However, conventional methods for EV isolation have limitations, and microfluidic approaches have been proposed as a solution. This review summarizes the most important microfluidic-based devices for EV isolation and their advantages and disadvantages compared to existing technology.
Article
Chemistry, Analytical
Maria Poles, Alessio Meggiolaro, Sebastian Cremaschini, Filippo Marinello, Daniele Filippi, Matteo Pierno, Giampaolo Mistura, Davide Ferraro
Summary: Magnetic beads are widely used in biochemical assays for purification and quantification of cells, nucleic acids, or proteins. However, their use in microfluidic devices is limited by precipitation due to their size and density. In this study, a shaking device is developed to prevent the sedimentation of magnetic beads, allowing for equal distribution in droplets without affecting droplet generation.
Article
Materials Science, Multidisciplinary
Daniele Filippi, Ladislav Derzsi, Francesco Nalin, Andrea Vezzani, Davide Ferraro, Annamaria Zaltron, Giampaolo Mistura, Matteo Pierno
Summary: The handling of yield-stress fluids is important for various injection and transport technologies such as additive manufacturing, injection molding, food rheology, and oil transport. This study focuses on the pressure-driven flow of emulsions in a microfluidic channel with a herringbone-patterned wall roughness. The results reveal a surprising flow boost in the forward direction as the emulsion approaches a jammed state, with evidence of nonlocal correlations and heterogeneous stress distribution.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Paszkal Papp, Samantha Bourg, Michael Emmanuel, Agota Toth, Ali Abou-Hassan, Dezso Horvath
Summary: In this study, the spatiotemporal precipitation of calcium oxalate crystals in a microchannel was investigated using a physicochemical approach. The formation of crystals was found to be correlated with supersaturation and gradient, and the crystal size exhibited increased monodispersity over time.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Mattia Carneri, Davide Ferraro, Afshin Azarpour, Alessio Meggiolaro, Sebastian Cremaschini, Daniele Filippi, Matteo Pierno, Giuliano Zanchetta, Giampaolo Mistura
Summary: The use of highly slippery lubricated surfaces can facilitate the movement of high-viscosity YSF droplets. The droplets slide on the lubricated surfaces and roll down when their descending speed increases, especially at high inclinations and low concentrations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Emilia Benassai, Ana C. Hortelao, Elif Aygun, Asli Alpman, Claire Wilhelm, Emine Ulku Saritas, Ali Abou-Hassan
Summary: Magnetic nanoparticles can be assembled into magnetic micelles using block copolymers, and they show great potential as multimodal theranostic platforms with high functionalities and performances. In addition to their biocompatibility, these magnetic nanohybrids can generate heat through photothermia, function as negative contrast agents in magnetic resonance imaging, and be used as imaging tracers in magnetic particle imaging.
NANOSCALE ADVANCES
(2023)
Review
Chemistry, Multidisciplinary
Aurore Van de Walle, Albert Figuerola, Ana Espinosa, Ali Abou-Hassan, Marta Estrader, Claire Wilhelm
Summary: Due to their unique physicochemical features, nanoparticles, especially magnetic nanoparticles with iron-based composition, have become effective multifunctional tools for biomedical applications. In oncology, these nanoparticles have been widely used in magnetic resonance imaging, magnetic hyperthermia, photothermal therapy, and ferroptosis induction.
MATERIALS HORIZONS
(2023)
Review
Chemistry, Multidisciplinary
Aurore Van de Walle, Albert Figuerola, Ana Espinosa, Ali Abou-Hassan, Marta Estrader, Claire Wilhelm
Summary: With their unique physicochemical features, nanoparticles, especially magnetic nanoparticles with iron-based composition, have been recognized as effective multifunctional tools for biomedical applications. This review focuses on the recent applications of iron-based nanomaterials in oncology, specifically photothermal therapy (PTT) and ferroptosis. These emerging physical and chemical methods for cancer therapy, facilitated by magnetic nanoparticles, offer versatile opportunities, combining multiple functionalities.
MATERIALS HORIZONS
(2023)