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Showing 1 to 20 of 26 for “"nanoconfinement"”.
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Flow of ionic liquids in nanoconfinement
Made available in DSpace on 2022-01-12T22:35:11Z (GMT). No. of bitstreams: 3 HAN-DISSERTATION-2021.pdf: 47709206 bytes, checksum: e901b50d13d22bafa2633b7c68efcd70 (MD5) LICENSE.txt: 4208 bytes, checksum: 5f98bb799c8265eb7ba2eb1dd3fded19 (MD5) PROQUEST_LICENSE.txt: 4554 bytes, checksum: …
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The glass transition and reaction kinetics under nanoconfinement
… of the glass transition. Furthermore, under nanoconfinement, Tg decreases, increases, or remains the same compared with that of the bulk, with results depending on starting material, confinement medium, sample preparation methods, and measurement technique. An adequate explanation of the …
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Self- assembly of soft matter under 2D nanoconfinement
La possibilità di creare nano e microstrutture confinate, integrabili su larga scala, è stata per molti anni uno degli interessi centrali della nanotecnologia e della nanoscienza. L'obiettivo principale è quello di controllare e manipolare l'assemblaggio, al fine di ottenere strutture con le …
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Tuning The Properties Of Soft Materials Through Extreme Nanoconfinement
Polymers and small molecules under nanoconfinement can show significantly deviated properties from bulk. While the effect of nanoconfinement has been studied for several decades, the origin of the deviation is yet to be investigated and different people can observe very different effects in similar …
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Engineering Nanoparticle And Nanoring Patterns For The Study Of Molecular Crystallization Under Nanoconfinement
<p>This dissertation focuses on generating the inorganic nanoparticle/organic nanorod hybrid nanostructures by the strategy of nanoparticle induced molecular crystallization developed by us and the new electrochemical method. We synthesize the gold nanoparticles with different sizes and functional …
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A study of conformational response of DNA to nanoconfinement by Monte Carlo simulation
The Monte Carlo simulations were carried out to explore how the restriction of the configurational degrees of freedom by a cylindrical potential, which mimics the nanochannel, alters certain structural properties of the supercoil. The simulation results were interpreted with the wormlike chain …
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Molecular Crystallization Directed By Nanoparticles And Nanopatterns
… compound nucleation and crystallization. The nanoconfinement effect will be addressed to study molecular crystallization by changing nanoparticle size, curvature and separation distance. Atomic force microscopy (AFM) is the main characterization tool to investigate the topography of the hybrid …
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Predicting the anomalous density of a dense fluid confined within a carbon nanotube
The equilibrium density of fluids under nanoconfinement can differ substantially from their bulk density. Using a mean-field approach to describe the energetic landscape near the carbon nanotube (CNT) wall, we obtain analytical results describing the lengthscales associated with the layering …
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DYNAMICS AND COMPACTION OF CONGESTED AND/OR CONFINED DNA
… with fluorescence microscopy. Anisotropic nanoconfinement facilitates compaction of DNA by negatively charged protein. Tentatively, it is interpreted that this behavior in terms of enhanced depletion interaction between segments of the DNA molecule due to orientation order imposed by the …
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Molecular Dynamics Study of Nano-confinement Effect on Hydrocarbons Fluid Phase Behavior and Composition in Organic Shale
… behavior. In this study, a MD simulation of nanoconfinement effect on hydrocarbon fluid phase and compositional behavior in organic shale rocks is presented. Chapter 1 reviews and discusses previous works on MD simulations of geological resources. With the knowledge acquired, a fully …
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Designer magnetoplasmonics for adaptive nano-optics
… an enhanced chiroptical response due to the nanoconfinement of light and strong near-field coupling. These have benefits in applications like chiral sensing. Fundamentally, they offer an additional degree of freedom to control the phase and polarization of light on the sub-wavelength scale …
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Structure and Ionic Conductivity Properties of Ionic Liquid@Metal—Organic Framework Composites
… greatly reduced compared to the bulk due to the nanoconfinement of the IL within the nanopores of the MOF. In the literature, studies have been limited to modifications to the organic linkers or metal ions of the MOF, however, the structuring of the pore architecture can be modified in several …
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LEVERAGING CONFINEMENT AND SURFACE EFFECTS TO CONTROL POLYMER PHASE BEHAVIOR AND TRANSPORT PHENOMENA IN POLYMER-INFILTRATED NANOPARTICLE FILMS
… we examine how blend morphology deviates under nanoconfinement. To probe solvent resistance, we employ solvation experiments to track polymer removal and determine how confinement and surface chemistry influence polymer retention. We also introduce a novel fabrication method, Sequential …
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Flexible nano-memory device by zinc oxide nanorod arrays
… traditional Ohm’s law because of the additional nanoconfinement from the third dimension. Photoelectric property change in half-dimensional (0.5D) ZnO nanomaterials as a function of illumination light intensity and materials geometry has been systematically studied. A new proposed model could …
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Developing Core-Shell Borohydride Nanoarchitectures and Understanding their Structure-Hydrogen Release/Uptake Relationships
… surface states, and/or high surface areas. The nanoconfinement of borohydrides in porous hosts (e.g. carbon, SiO2, and/or MOFs) has shown the possibility of improving their H2 release/uptake properties; however, this technique is impractical because of the hydroxyl/oxygen species, dead mass, …
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Design of polymeric substrates for controlled molecular crystallization
… mechanistic investigations. Furthermore, the nanoconfinement effect on nucleation was studied using polymeric microgels with tunable nanostructures and chemistry, whose mesh sizes range from 0.7-2 nm. We presented the first experimental evidence for the existence of an optimum confinement size …
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Structural heterogeneity in silk fibers and its effects on failure mechanics and supercontraction
… and heterogeneity in silk and other biopolymers. Nanoconfinement and flaw tolerance are presented as natural strategies to increase the mechanical performance of the entire material system. It is shown that the consideration of interatomic interactions alone cannot explain the fracture strength …
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Polymer Structure and Dynamics in Nano-Confinements: Polymer Nanocomposiets and Cylindrical Confinement
… spherical and cylindrical nanoparticles and nanoconfinement directly imposed by impenetrable planar and cylindrical walls. Polymer structure can be affected when adding nanoparticles into polymer matrices, which may lead to a change in dynamics. Small angle neutron scattering is applied to …
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Characterization of nano-scaled metal-hydrides confined in nano-porous carbon frameworks
"Metal hydrides are currently being studied to provide hydrogen for use in fuel cells and for transportation applications. Hydrogen can be stored in chemical compounds at higher density and lower volume than liquid H₂ or compressed gas. Thermodynamic properties of metal hydrides differ between bulk …
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Nanoscale Liquid Dynamics in Membrane Matrices: Insights into Confinement, Molecular Interactions, and Hydration
… species. At relatively low hydrations, the nanoconfinement of the polymer matrix leads to the ordering of confined water and prompts a high energy barrier for transport. We then delve deeper into the confinement effect by molecular modeling of various nanoconfining geometries, including …
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