A5020894840- Rheology and Fluid Dynamics Studies
- Pickering emulsions and particle stabilization
- Electrospun Nanofibers in Biomedical Applications
- Chemical Synthesis and Reactions
- Micro and Nano Robotics
- Boron Compounds in Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Surfactants and Colloidal Systems
- Modular Robots and Swarm Intelligence
- Organoboron and organosilicon chemistry
- Surface Modification and Superhydrophobicity
- Material Dynamics and Properties
- Electrohydrodynamics and Fluid Dynamics
- Additive Manufacturing and 3D Printing Technologies
- Chemical Synthesis and Analysis
- Oxidative Organic Chemistry Reactions
- Textile materials and evaluations
- Esophageal and GI Pathology
- Synthesis and Biological Evaluation
- biodegradable polymer synthesis and properties
- Graphene research and applications
- Synthetic Organic Chemistry Methods
- Characterization and Applications of Magnetic Nanoparticles
- Eosinophilic Esophagitis
- Asymmetric Synthesis and Catalysis
IMEC
2017-2024
Beaumont Hospital, Royal Oak
2018-2024
Hasselt University
2017-2023
Muljibhai Patel Urological Hospital
2020-2022
KU Leuven
2008-2020
University of Calgary
2018-2020
Humboldt-Universität zu Berlin
2016
Jeonbuk National University
2008
Princeton University
2008
BASF (United States)
2008
Abstract A possible strategy to give a simultaneous boost the energy and power attributes of current generation lithium‐ion batteries is developing thick porous electrodes with high loading active material alongside optimal percolation networks for ions electrons. However insertion capacity kinetics single particle lithium‐insertion materials, density cell can be capped by ionic electronic transport limitations in electrode. In this work, physical picture grounded experiment theory proposed...
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine mats. Due to its high rate, it could provide more technologically relevant than electrospinning. In this contribution, we examine influence polymer concentration and nozzle material on centrifugal process morphology. We find that increasing transforms from beaded-fiber regime continuous-fiber regime. Furthermore, not only diameter is strongly...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Naveen Krishna Reddy, Zhenkun Zhang, M. Paul Lettinga, Jan K. G. Dhont, Vermant; Probing structure in colloidal gels of thermoreversible rodlike virus particles: Rheology scattering. J. Rheol. 1 September 2012; 56 (5): 1153–1174. https://doi.org/10.1122/1.4728335 Download citation file: Ris (Zotero) Reference...
We show that incorporating ultrahigh molecular weight (UHMw) polymer fractions into spinning dopes improves their spinnability and facilitates the centrifugal force (CFS) of polystyrene (PS) fiber mats with enhanced mechanical sorption properties. For matched concentration, c, solvent type, UHMw additive at a low fraction (<0.1) only weakly influences shear viscosity. attribute properties to change in extensibility (stretched equilibrium coil size ratio), quantified using...
Purpose: To present initial clinical comparison between high-power holmium laser with MOSES technology (HPH-M) and thulium fiber (TFL) during mini-percutaneous nephrolithotomy (PCNL) for renal calculi specific emphasis on fragmentation efficiency, fragment size distribution, stone-free rates (SFRs). Materials Methods: Between August 2018 December 2019, we performed mini-PCNL <3 cm using HPH-M (Lumenis, Israel) or TFL (Urolase SP, IPG Photonics). Data were collected prospectively in our...
Biobased and biodegradable polyhydroxyalkanoates (PHAs) are currently gaining momentum. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) polymer has a useful processing window for extrusion injection molding of packaging, agricultural fishery applications with required flexibility. Processing PHBHHx into fibers using electrospinning or centrifugal fiber spinning (CFS) can further broaden the application area, although CFS remains rather unexplored. In this study, centrifugally spun...
Particle shape plays an important role in controlling the optical, magnetic, and mechanical properties of nanoparticle suspensions as well nanocomposites. However, characterizing size, shape, associated polydispersity nanoparticles is not straightforward. Electron microscopy provides accurate measurement geometric properties, but sample preparation can be laborious, to obtain statistically relevant data many particles need analyzed separately. Moreover, when are suspended a fluid, it measure...
We show that poly(ethylene oxide) (PEO) solutions formulated using solvent mixtures of acetonitrile (AcN) and water can be centrifugally spun into fibers. find spinnability fiber morphology depend on choice if polymer concentration, solution shear rheology, the number entanglements, extensional relaxation time, parameters for centrifugal spinning are nearly matched. obtain an intrinsic map volatile entangled (VE) by contrasting measured time with evaporation rate determined thermogravimetric...
To reduce the high surface roughness of additive manufactured (AM) products, typically a post-treatment is required. Subtractive post-treatments are often performed by hand and therefore expensive time consuming, whereas conventional post-treatments, such as pneumatic spray coating, require large quantities coating material. Ultrasonic in contrast, an technology capable applying coatings efficient way, resulting less material usage. In this paper, we investigate application ultrasonic...
Biobased and biodegradable polyhydroxyalkanoates (PHAs) have great potential as sustainable packaging materials. However, improvements in their processing mechanical properties are necessary. In this work, the influence of melt conditions on microstructure poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) is examined using a full factorial design experiments (DoE) approach. We found that strict control over temperature, mold screw speed, cooling time leads to highly increased elongation...
The errors on rheological measurements due to overfilling of Newtonian fluids using parallel plate and cone-plate setups in rotational rheometry are quantified. Overfilled sample causes an additional drag force, thereby increasing the measured viscosity, especially when wets geometry rim. This can cause up 30% standard experimental such as plates with a gap height 1 mm. viscosity error increases proportionally ratio radius geometry. By developing scaling relation that captures main effects...
Stress relaxation upon cessation of shear flow is known to be described by single-mode or multimode monotonic exponential decays. This considered ubiquitous in nature. However, we found that, some cases, the becomes anomalous that an increase relaxing stress observed. Those observations were made for physicochemically very different systems, having common, however, presence self-associating units generating structures at large length scales. The nonmonotonic can phenomenologically a generic...
Flow can change the rate at which solutes adsorb on surfaces by changing mass transfer to surface, but moreover, flow induce changes in conformation of macromolecules solution providing sufficient stresses perturb segmental distribution function. However, there are few studies where effect has been shown alter structure adsorbed surfaces. We have studied how local energy dissipation alters adsorption gelatin onto polystyrene nanoparticles (r = 85 nm). The nature layer is manifest ability...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Christophe Mobuchon, Pierre J. Carreau, Marie-Claude Heuzey, Naveen Krishna Reddy, Jan Vermant; Anisotropy of nonaqueous layered silicate suspensions subjected to shear flow. Journal Rheology 1 May 2009; 53 (3): 517–538. https://doi.org/10.1122/1.3094911 Download citation file: Ris (Zotero) Reference Manager...