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Showing 1 to 20 of 154 for “"Boron nitride"”.
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Optical study on hexagonal boron nitride
… the temperature dependence of energy bandgap of boron nitride nanotubes.
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Alkylation of Boron Nitride Nanomaterials using Reductive Conditions
Boron nitride nanomaterials possess an unparalleled combination of properties: their mechanic properties are superior to that of steel, their thermal conductivity is comparable to that of copper, their band gap is that of an insulating material, and their chemical and thermal stability is …
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Mirror-Coupled Nanoantennas with Hexagonal-Boron Nitride Spacers
… consisting of the layered dielectric hexagonal-Boron Nitride encapsulated between gold nanoparticles and a gold substrate, are probed using high-angle optical scattering measurements. During illumination of individual nanoparticles, light is trapped at the nanoscale inside the hBN, between …
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Structural and thermal properties of graphene - boron nitride superlattice
… two–dimensional materials such as the graphene - boron nitride (C-BN) superlattices. C-BN superlattices with regular ordered subdomains of graphene and boron nitride have recently been synthesized and characterized as a potential candidate for optoelectronic and thermoelectric devices. However, …
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Processing and characterization of boron nitride composites and films
… to oxidation, and high electrical conductivity. Boron nitride (BN) provides a suitable alternative to carbon because of its oxidation resistance and its low dielectric constant. This thesis describes a novel approach to the synthesis of BN composites and films based on borazine, the …
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Photon-induced tunneling in graphene-boron nitride-graphene heterostructures
… measurements performed on ultrathin graphene-boron nitride-graphene heterostructures. Scanning photocurrent spectroscopy allows us to explore the tunneling behavior of these devices as a function of both photon energy and bias voltage. Tunneling through the boron nitride insulator is found to …
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Characterization of Boron Nitride Thin Films on Silicon (100) Wafer.
Cubic boron nitride (cBN) thin films offer attractive mechanical and electrical properties. The synthesis of cBN films have been deposited using both physical and chemical vapor deposition methods, which generate internal residual, stresses that result in delamination of the film from substrates. …
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Advancements in Hexagonal Boron Nitride for Thermal Neutron Detection Applications
Hexagonal boron nitride (h-BN) possesses many unique physical properties which combined have made h-BN an incredibly attractive material for a vast array of technologically significant applications. Some of these properties include extremely wide bandgap, strong optical absorption of above bandgap …
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High temperature quantum transport in graphene/hexagonal-boron nitride heterostructures
… flow in graphene encapsulated with hexagonal boron nitride devices. At elevated temperatures, electron-electron collisions become significant, and the electron viscosity starts to influence the steady state current distribution in a variety of surprising ways. In the first work, we perform …
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Density Functional Theory Study of Two-Dimensional Boron Nitride Films
… that has emerged in recent years is hexagonal boron nitride, in its monolayer or multilayer form. In my thesis work, I used density functional theory (DFT) calculations to investigate the properties of boron nitride films. In particular, I first studied the properties (i.e. formation energy, …
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Remote epitaxy of III-N membranes on amorphous boron nitride
Amorphous boron nitride (aBN) has found broad applications in industrial applications. Thick aBN has been thoroughly investigated¹,², including the recent revisiting of this material at nanometer thickness. However, most investigations of aBN so far have been based on three-dimensional structures. …
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Growth and characterization of high-quality bulk hexagonal boron nitride crystals
While hexagonal boron nitride (hBN) in polycrystalline form has met demand for its mechanical, chemical, and thermal applications, its new electronic, optoelectronic, and nanophotonic applications required single crystals with low residual impurity concentrations. Grain boundaries and impurities …
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Investigating the Behavior of Boron Nitride Nanomaterials in Aqueous Surfactant Solutions
Boron nitride nanomaterials are an exciting and understudied class of materials with enticing properties for a wide range of applications. They’re extremely lightweight and strong, with high thermal and chemical stability, and a wide bandgap that makes them electrically insulating and transparent …
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Structural Analysis and Radiation Response of Multi-Walled Boron Nitride Nanotubes
Electron irradiation damage analysis has revealed that: (1) Damage mechanism is different from carbon nanotubes; no radiation induced amorphization was observed, (2) irradiation response of BN nanotubes to 200 keV electrons in TEM environment is almost independent of temperature, (3) under intense …
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Catalytic Role of Boron Nitride in the Thermal Decomposition of Ammonium Perchlorate
… decomposition becomes catalyzed. In this study, Boron Nitride (BN) nanostructures, a material previously unknown to act as a catalyst, is studied. The decomposition reaction is studied by thermo-gravimetric analysis / differential scanning calorimetry, X-ray photoelectron spectroscopy, fourier …
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Epitaxial growth and characterization of hexagonal boron nitride for deep UV applications
Hexagonal boron nitride has attracted a lot of interest in the deep UV community of late. Due to its wide bandgap (~ 6 eV), hBN has a significant potential for deep ultraviolet (DUV) photonic device applications. Additionally, the high neutron capture cross-section of the isotope boron-10 makes hBN …
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Molecular Dynamics and Ab Initio Studies on Nanofluidics in Boron Nitride Nanotubes
Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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