Vortex fluidics mediated non-covalent physical entanglement of tannic acid and gelatin for entrapment of nutrients

2021 ◽  
Author(s):  
Xuejiao Cao ◽  
Nikita Joseph ◽  
Matt Jellicoe ◽  
Ahmed Hussein Mohammed Al-Antaki ◽  
Xuan Luo ◽  
...  
Keyword(s):  
Thin Film ◽  
Shear Stress ◽  
Tannic Acid ◽  
Continuous Flow ◽  
Simple Process ◽  
Fluidic Device ◽  
Physical Entanglement

We have developed a simple process for the entrapment of nutrients in shear stress induced non-covalent physically entangled tannic acid-gelatin gel in a thin film vortex fluidic device (VFD) operating under continuous flow.

scholarly journals Continuous flow vortex fluidic-mediated exfoliation and fragmentation of two-dimensional MXene

2020 ◽  
Vol 7 (5) ◽  
pp. 192255
Author(s):  
Ahmed Hussein Mohammed Al-antaki ◽  
Suela Kellici ◽  
Nicholas P. Power ◽  
Warren D. Lawrance ◽  
Colin L. Raston
Keyword(s):  
Thin Film ◽  
Continuous Flow ◽  
Isopropyl Alcohol ◽  
Inert Atmosphere ◽  
Operating Parameters ◽  
Two Dimensional ◽  
Flow Conditions ◽  
2D Material ◽  
Fluidic Device ◽  
Flow Vortex

MXene (Ti 2 CT x ) is exfoliated in a vortex fluidic device (VFD), as a thin film microfluidic platform, under continuous flow conditions, down to ca 3 nm thin multi-layered two-dimensional (2D) material, as determined using AFM. The optimized process, under an inert atmosphere of nitrogen to avoid oxidation of the material, was established by systematically exploring the operating parameters of the VFD, along with the concentration of the dispersed starting material and the choice of solvent, which was a 1 : 1 mixture of isopropyl alcohol and water. There is also some fragmentation of the 2D material into nanoparticles ca 68 nm in diameter.

Vortex Fluidic Ethenolysis, Integrating a Rapid Quench of Ruthenium Olefin Metathesis Catalysts

2020 ◽  
Vol 73 (12) ◽  
pp. 1138
Author(s):  
Scott J. Pye ◽  
Justin M. Chalker ◽  
Colin L. Raston
Keyword(s):  
Thin Film ◽  
Olefin Metathesis ◽  
Continuous Flow ◽  
Rapid Quenching ◽  
Flow Process ◽  
Rapid Quench ◽  
Metathesis Catalyst ◽  
Fluidic Device ◽  
Continuous Flow Process ◽  
Metathesis Catalysts

Ruthenium-catalysed ethenolysis occurs in a vortex fluidic device (VFD) – a scalable, thin-film microfluidic continuous flow process. This process takes advantage of the efficient mass transfer of gaseous reagents into the dynamic thin film of liquid. Also reported is the rapid quenching of the ruthenium-based olefin metathesis catalyst by the addition of a saturated solution of N-acetyl-l-cysteine in MeCN, as a convenient alternative to previously reported quenching methods.

scholarly journals Dynamic thin film mediated slicing of boron nitride nanotubes

2019 ◽  
Vol 1 (12) ◽  
pp. 4722-4728 ◽  
Author(s):  
Ahmed Hussein Mohammed Al-antaki ◽  
Warren D. Lawrance ◽  
Colin L. Raston
Keyword(s):  
Thin Film ◽  
Boron Nitride ◽  
Continuous Flow ◽  
Boron Nitride Nanotubes ◽  
Fluidic Device

A method has been developed to slice boron nitride nanotubes BNNTs under continuous flow in a vortex fluidic device (VFD), along with a method to partially purify the as received BNNT containing material.

Shear Stress Induced Fabrication of Dandelion-Shaped Lanthanide Phosphate Nanoparticles

2017 ◽  
Vol 70 (7) ◽  
pp. 823
Author(s):  
Nicholas J. D'Alonzo ◽  
Paul K. Eggers ◽  
Ela Eroglu ◽  
Colin L. Raston
Keyword(s):  
Shear Stress ◽  
Electron Microscope ◽  
Tilt Angle ◽  
Continuous Flow ◽  
Morphological Changes ◽  
Molecular Weights ◽  
Lanthanide Phosphate ◽  
Microscope Images ◽  
Fluidic Device ◽  
Transition Electron

Lanthanide phosphate nanoparticles were co-precipitated under continuous flow in a vortex fluidic device in the presence of polyvinylpyrrolidone (PVP) of different molecular weights and at varying rotational speeds and tilt angles. Dandelion-shaped lanthanide phosphate particles were produced at rotation speeds of 5000 rpm and 7000 rpm. In contrast, individual rods formed at 9000 rpm. Transition electron microscope images reveal changes in morphology of the dandelion-shaped nanoparticles with changes in the chain length of PVP or tilt angle of the tube of the vortex fluidic device. These morphological changes are likely to arise from different wrapping and aggregation of the nanoparticles induced by the PVP polymer under shear.

scholarly journals Impact of chosen force fields and applied load on thin film lubrication

Friction ◽  
2021 ◽  
Author(s):  
Thi D. Ta ◽  
Hien D. Ta ◽  
Kiet A. Tieu ◽  
Bach H. Tran
Keyword(s):  
Thin Film ◽  
Shear Stress ◽  
Surface Structure ◽  
Rheological Properties ◽  
Surface Potential ◽  
Applied Load ◽  
Velocity Slip ◽  
Thin Film Lubrication ◽  
Lubrication Performance ◽  
Film Lubrication

AbstractThe rapid development of molecular dynamics (MD) simulations, as well as classical and reactive atomic potentials, has enabled tribologists to gain new insights into lubrication performance at the fundamental level. However, the impact of adopted potentials on the rheological properties and tribological performance of hydrocarbons has not been researched adequately. This extensive study analyzed the effects of surface structure, applied load, and force field (FF) on the thin film lubrication of hexadecane. The lubricant film became more solid-like as the applied load increased. In particular, with increasing applied load, there was an increase in the velocity slip, shear viscosity, and friction. The degree of ordering structure also changed with the applied load but rather insignificantly. It was also significantly dependent on the surface structure. The chosen FFs significantly influenced the lubrication performance, rheological properties, and molecular structure. The adaptive intermolecular reactive empirical bond order (AIREBO) potential resulted in more significant liquid-like behaviors, and the smallest velocity slip, degree of ordering structure, and shear stress were compared using the optimized potential for liquid simulations of united atoms (OPLS-UAs), condensed-phase optimized molecular potential for atomic simulation studies (COMPASS), and ReaxFF. Generally, classical potentials, such as OPLS-UA and COMPASS, exhibit more solid-like behavior than reactive potentials do. Furthermore, owing to the solid-like behavior, the lubricant temperatures obtained from OPLS-UA and COMPASS were much lower than those obtained from AIREBO and ReaxFF. The increase in shear stress, as well as the decrease in velocity slip with an increase in the surface potential parameter ζ, remained conserved for all chosen FFs, thus indicating that the proposed surface potential parameter ζ for the COMPASS FF can be verified for a wide range of atomic models.

Continuous flow photolytic reduction of graphene oxide

2019 ◽  
Vol 55 (76) ◽  
pp. 11438-11441 ◽  
Author(s):  
Thaar M. D. Alharbi ◽  
Amira R. M. Alghamdi ◽  
Kasturi Vimalanathan ◽  
Colin L. Raston
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Continuous Flow ◽  
Reducing Agents ◽  
Reduced Graphene ◽  
Fluidic Device

Reduced graphene oxide (rGO) is generated from GO dispersed in water under continuous flow in the absence of harsh reducing agents, in a vortex fluidic device, such that the processing is scalable with uniformity of the product.

105 Alterations in Flow and Shear Stress in the Thoracic Aorta with a Continuous-Flow Left Ventricular Assist Device

2012 ◽  
Vol 31 (4) ◽  
pp. S44
Author(s):  
D. Gupta ◽  
M. Piccinelli ◽  
T. Passerini ◽  
A. Veneziani ◽  
L. Brewster ◽  
...  
Keyword(s):  
Shear Stress ◽  
Thoracic Aorta ◽  
Left Ventricular Assist Device ◽  
Ventricular Assist Device ◽  
Continuous Flow ◽  
Left Ventricular ◽  
Assist Device ◽  
Ventricular Assist ◽  
Left Ventricular Assist

Kinetic study on degradation of gaseous acetone over thin-film TiO2 photocatalyst in a continuous flow system

2007 ◽  
Vol 90 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Sung Hyun Kim ◽  
Sang Bum Kim ◽  
Gyung Soo Kim ◽  
Hyun Tae Jang ◽  
Sung Chang Hong
Keyword(s):  
Thin Film ◽  
Kinetic Study ◽  
Continuous Flow ◽  
Flow System ◽  
Tio2 Photocatalyst ◽  
Continuous Flow System

Investigating the effect of operation points on crystal quality in reactive crystallization using continuous flow with high shear stress

2021 ◽  
Vol 176 ◽  
pp. 116-122
Author(s):  
Shuntaro Amari ◽  
Chinami Sugawara ◽  
Ryo Harada ◽  
Shoji Kudo ◽  
Hiroshi Takiyama
Keyword(s):  
Shear Stress ◽  
Continuous Flow ◽  
Crystal Quality ◽  
High Shear ◽  
High Shear Stress ◽  
Reactive Crystallization
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