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.

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.

scholarly journals Inverted vortex fluidic exfoliation and scrolling of hexagonal-boron nitride

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 22074-22079 ◽  
Author(s):  
Ahmed Hussein Mohammed Al-Antaki ◽  
Xuan Luo ◽  
Thaar M. D. Alharbi ◽  
David P. Harvey ◽  
Scott Pye ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Continuous Flow ◽  
Hexagonal Boron Nitride ◽  
Fluidic Device

Exfoliation or scrolling of h-BN occurs in a vortex fluidic device under downward continuous flow.

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.

High flux thin-film nanocomposites with embedded boron nitride nanotubes for nanofiltration

2020 ◽  
Vol 597 ◽  
pp. 117749 ◽  
Author(s):  
Serena Casanova ◽  
Tian-Yin Liu ◽  
Yong-Min J. Chew ◽  
Andrew Livingston ◽  
Davide Mattia
Keyword(s):  
Thin Film ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
High Flux ◽  
Film Nanocomposites

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.

Molecular insights on the dynamic stability of peptide nucleic acid functionalized carbon and boron nitride nanotubes

2021 ◽  
Vol 23 (1) ◽  
pp. 219-228
Author(s):  
Nabanita Saikia ◽  
Mohamed Taha ◽  
Ravindra Pandey
Keyword(s):  
Nucleic Acid ◽  
Boron Nitride ◽  
Nucleic Acids ◽  
Dynamic Stability ◽  
Peptide Nucleic Acid ◽  
Rational Design ◽  
Peptide Nucleic Acids ◽  
Boron Nitride Nanotubes ◽  
Molecular Hybrids ◽  
Single Wall Nanotubes

The rational design of self-assembled nanobio-molecular hybrids of peptide nucleic acids with single-wall nanotubes rely on understanding how biomolecules recognize and mediate intermolecular interactions with the nanomaterial's surface.

Density Functional Theory Study of Antioxidant Adsorption onto Single- Wall Boron Nitride Nanotubes: Design of New Antioxidant Delivery Systems

2019 ◽  
Vol 22 (7) ◽  
pp. 470-482
Author(s):  
Samereh Ghazanfary ◽  
Fatemeh Oroojalian ◽  
Rezvan Yazdian-Robati ◽  
Mehdi Dadmehr ◽  
Amirhossein Sahebkar
Keyword(s):  
Density Functional Theory ◽  
Boron Nitride ◽  
Vitamin C ◽  
Electric Field ◽  
External Electric Field ◽  
Lipoic Acid ◽  
Density Functional ◽  
Cell Interaction ◽  
Boron Nitride Nanotubes ◽  
Functional Theory

Background: Boron Nitride Nanotubes (BNNTs) have recently emerged as an interesting field of study, because they could be used for the realization of developed, integrated and compact nanostructures to be formulated. BNNTs with similar surface morphology, alternating B and N atoms completely substitute for C atoms in a graphitic-like sheet with nearly no alterations in atomic spacing, with uniformity in dispersion in the solution, and readily applicable in biomedical applications with no obvious toxicity. Also demonstrating a good cell interaction and cell targeting. Aim and Objective: With a purpose of increasing the field of BNNT for drug delivery, a theoretical investigation of the interaction of Melatonin, Vitamin C, Glutathione and lipoic acid antioxidants using (9, 0) zigzag BNNTs is shown using density functional theory. Methods: The geometries corresponding to Melatonin, Vitamin C, Glutathione and lipoic acid and BNNT with different lengths were individually optimized with the DMOL3 program at the LDA/ DNP (fine) level of theory. Results: In the presence of external electric field Melatonin, Vitamin C, Glutathione and lipoic acid could be absorbed considerably on BNNT with lengths 22 and 29 Å, as the adsorption energy values in the presence of external electric field are considerably increased. Conclusion: The external electric field is an appropriate technique for adsorbing and storing antioxidants on BNNTs. Moreover, it is believed that applying the external electric field may be a proper method for controlling release rate of drugs.

scholarly journals About the possibility of creating a high-performance sensor based on boron nitride nanotubes

2020 ◽  
Author(s):  
N. P. Boroznina ◽  
M. A. Vdovin ◽  
I. V. Zaporotskova ◽  
S. V. Boroznin ◽  
P. A. Zaporotskov
Keyword(s):  
Boron Nitride ◽  
High Performance ◽  
Boron Nitride Nanotubes

scholarly journals Four-dimensional vibrational spectroscopy for nanoscale mapping of phonon dispersion in BN nanotubes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ruishi Qi ◽  
Ning Li ◽  
Jinlong Du ◽  
Ruochen Shi ◽  
Yang Huang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Phonon Dispersion ◽  
Hexagonal Boron Nitride ◽  
Real Space ◽  
Boron Nitride Nanotubes ◽  
Detection Sensitivity ◽  
Optical Modes ◽  
Optical And Mechanical Properties ◽  
Energy And Momentum

AbstractDirectly mapping local phonon dispersion in individual nanostructures can advance our understanding of their thermal, optical, and mechanical properties. However, this requires high detection sensitivity and combined spatial, energy and momentum resolutions, thus has been elusive. Here, we demonstrate a four-dimensional electron energy loss spectroscopy technique, and present position-dependent phonon dispersion measurements in individual boron nitride nanotubes. By scanning the electron beam in real space while monitoring both the energy loss and the momentum transfer, we are able to reveal position- and momentum-dependent lattice vibrations at nanometer scale. Our measurements show that the phonon dispersion of multi-walled nanotubes is locally close to hexagonal-boron nitride crystals. Interestingly, acoustic phonons are sensitive to defect scattering, while optical modes are insensitive to small voids. This work not only provides insights into vibrational properties of boron nitride nanotubes, but also demonstrates potential of the developed technique in nanoscale phonon dispersion measurements.

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