A5080937639- Electrospun Nanofibers in Biomedical Applications
- Electrohydrodynamics and Fluid Dynamics
- Advanced Sensor and Energy Harvesting Materials
- Fluid Dynamics and Heat Transfer
- Surface Modification and Superhydrophobicity
- Rheology and Fluid Dynamics Studies
- Particle Dynamics in Fluid Flows
- Polymer composites and self-healing
- Textile materials and evaluations
- Fluid Dynamics and Thin Films
- Conducting polymers and applications
- Plant Surface Properties and Treatments
- Electrowetting and Microfluidic Technologies
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Turbulent Flows
- Dental Research and COVID-19
- Nanomaterials and Printing Technologies
- Heat Transfer and Boiling Studies
- Microfluidic and Bio-sensing Technologies
- Fluid Dynamics Simulations and Interactions
- High-Velocity Impact and Material Behavior
- Microfluidic and Capillary Electrophoresis Applications
- Pickering emulsions and particle stabilization
- Polymer crystallization and properties
- Combustion and Detonation Processes
University of Illinois Chicago
2015-2024
Korea University
2013-2024
Iowa State University
2019-2021
Istituto per le Applicazioni del Calcolo Mauro Picone
2020
Institute of Fundamental Technological Research
2020
Polish Academy of Sciences
2020
Seoul Institute
2018
Government of the Republic of Korea
2018
Bridge University
2015
University of Cambridge
2015
The review deals with drop impacts on thin liquid layers and dry surfaces. resulting in crown formation are referred to as splashing. Crowns their propagation discussed detail, well some additional kindred, albeit nonsplashing, phenomena like spreading deposition, receding (recoil), jetting, fingering, rebound. begins an explanation of various practical motivations feeding the interest fascinating impact, above-mentioned topics then considered experimental, theoretical, computational aspects.
Nanofibers of polymers were electrospun by creating an electrically charged jet polymer solution at a pendent droplet. After the flowed away from droplet in nearly straight line, it bent into complex path and other changes shape occurred, during which electrical forces stretched thinned very large ratios. solvent evaporated, birefringent nanofibers left. In this article reasons for instability are analyzed explained using mathematical model. The rheological complexity is included, allows...
In electrospinning, polymer nanofibers are formed by the creation and elongation of an electrified fluid jet. The path jet is from a surface that often, but not necessarily constrained orifice, through straight segment tapering cone, then series successively smaller electrically driven bending coils, with each coil having turns increasing radius, finally solidifying into continuous thin fiber. Control process produces fibers nanometer scale diameters, along various cross-sectional shapes,...
Co‐electrospinning of core–shell polymer nanofibers (see Figure) is introduced. This process can be used for manufacturing coaxial made pairs different materials. Non‐spinnable materials forced into 1D arrangements by co‐electrospinning using a spinnable shell polymer. The method results in novel two‐stage approach fabrication nanotubes instead the previously three‐stage process.
A localized approximation was developed to calculate the bending electric force acting on an electrified polymer jet, which is a key element of electrospinning process for manufacturing nanofibers. Using this force, far reaching analogy between electrically driven instability and aerodynamically established. Continuous, quasi-one-dimensional, partial differential equations were derived used predict growth rate small perturbations liquid column. discretized form these equations, that accounts...
The impact of drops impinging one by on a solid surface is studied experimentally and theoretically. process observed means charge-coupled-device camera, its pictures processed computer. Low-velocity results in spreading propagation capillary waves, whereas at higher velocities splashing (i.e. the emergence cloud small secondary droplets, absent former case) sets in. Capillary waves are some detail separate experiments. dynamics extension liquid lamellae produced an case recorded....
Sessile and pendant droplets of polymer solutions acquire stable shapes when they are electrically charged by applying an electrical potential difference between the droplet a flat plate, if is not too large. These result only from equilibrium electric forces surface tension in cases inviscid, Newtonian, viscoelastic liquids. In liquids with nonrelaxing elastic force, that force also affects shapes. It widely assumed critical φ0* has been reached any further increase will destroy...
This paper describes an electrostatic field-assisted assembly technique combined with electrospinning process used to position and align individual nanofibres (NFs) on a tapered grounded wheel-like bobbin. The bobbin is able wind continuously as-spun nanofibre at its tip-like edge. alignment approach has resulted in polyethylene oxide-based NFs diameters ranging from 100-300 nm lengths of up hundreds microns. results demonstrate the effectiveness this new for assembling parallel arrays while...
The electrospinning process was used successfully to fabricate nanofibers of poly(ethylene oxide) (PEO) in which multiwalled carbon nanotubes (MWCNT) are embedded. Initial dispersion MWCNTs water achieved using amphiphiles, either as small molecules (sodium dodecyl sulfate, SDS) or a high molecular weight, highly branched polymer (Gum Arabic). These dispersions provided separation the and their individual incorporation into PEO by subsequent electrospinning. focus this work is on development...
Abstract The mini‐review is devoted to coaxial electrospinning (co‐electrospinning, emulsion electrospinning), a group of novel methods for making core–shell nanofibers and hollow nanotubes. physical aspects the process are described in brief, particular, its modeling possible drawbacks resulting formation fibers without long intact core. After that main applications co‐electrospinning considered. They include drug release, encapsulation different biologically active compounds, cell...
Co-electrospinning is ideally suited for fabricating continuous fibers encasing materials within a polymer sleeve, but requires relatively complex coannular nozzles. A single-nozzle co-electrospinning technique demonstrated using blends of poly(methyl methacrylate) (PMMA)/polyacrylonitrile (PAN) solutions in dimethylformamide (DMF). The as-spun have outer diameters the range 0.5-5 microm and possess core-shell structure similar to that attained via relies on precipitation PMMA solution...
Three-dimensional carbon fiber electrodes prepared by electrospinning and solution blowing are shown to be excellent electrode materials for bioelectrochemical systems such as microbial fuel cells or electrolysis cells. The bioelectrocatalytic anode current density is reach values of up 30 A m−2, which represents the highest reported electroactive biofilms.