Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"Two-dimensional material"”.
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Two-dimensional material based layer transfer of thin film devices
… proposes a novel layer transfer process, termed two-dimensional material based layer transfer (2DLT), which prepares thinfilm semiconductors by facile mechanical exfoliation to yield a clean wafer surface requiring minimal surface treatment. Moreover, this process can be applied to a wide range …
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Spectroscopic Measurements of Doping and Strain at Two-Dimensional Material Interfaces
… study uniaxial and biaxial strain in monolayer two-dimensional materials. Here I report SHG microscopy measurements of chemical vapor deposition (CVD) grown MoS2 on Si/SiO2 and c-cut sapphire, as well as in-plane WSe2/NbS2 in-plane heterostructures. I utilize a three-point polarization-resolved …
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Mechanics of two-dimensional material interfaces under the three-dimensional deformation
The student, Jaehyung Yu, accepted the attached license on 2020-05-05 at 17:21.
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Two-dimensional material enhanced dielectric and conductive inks for printable electronics
… of current functional inks, such as high material cost, complex processing requirements, and low electrical conductivities/dielectric constants. For example, currently available conductive inks are based on metal salts or particles (i.e. silver) which are expensive and require complex …
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Two-dimensional material inks and composites for printed electronics and energy
This thesis explores the application of two-dimensional (2D) materials such as graphene and single layer hexagonal boron nitride (h-BN) which are produced by liquid phase exfoliation for use in printed electronics and energy composite applications. In Chapter 2 I give a broad overview of the …
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Layer-by-Layer Single-crystal Two-dimensional Material Growth by Geometric Confinement
Two-dimensional (2D) transition metal dichalcogenides (TMDs) and their heterostructures have been widely studied for next-generation electronics. However, the following critical challenges have hindered them from their commercialization: 1) precise layer control during their growth, 2) maintaining …
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Scanning Probe Microscopy Study of Molecular Self Assembly Behavior on Graphene Two-dimensional Material
… needed to integrate graphene with the different materials required for potential applications. Molecular self-assembly behavior on graphene is a key method to investigate the mechanism of interaction between molecules and graphene and the promising applications related to molecular devices. In …
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Superconducting tunneling spectroscopy of graphene and graphene nanostructures
… spectroscopy of graphene and nanostructures in two dimensional materials. The technique of tunneling spectroscopy via a planar superconducting probe is developed based on a well-formed self-limited tunnel barrier created only between the Pb and the graphene. High magnetic field/low temperature …
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Synthesis and characterization of two-dimensional transition metal dichalcogenides
… methods. The resulting monolayer WSe2 and MoS2 materials provide a solid material foundation for future study of the electronic and photonic devices based on these materials. These novel devices will have a broad range of applications in computing, communication, and biomedicine.
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Electronic devices based on 2D material: fabrication, characterization and analysis
Two-dimensional (2D) crystals are layered materials with strong in-plane covalent bonding and weak Van der Waals interlayer coupling. Stable 2D materials range from insulators, to semiconductors, to metals and even superconductors. Compared to their bulk counterparts, 2D materials show many …
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Electronic Quantum Transport in Graphene.
Graphene is a new two-dimensional material with interesting electronic properties and a wide range of applications. Graphene epitaxially grown on the Si-terminated surface of SiC is a good candidate to replace semiconductors in field-effect transistors. In this work we investigate the properties of …
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Electronic transport in low-angle twisted bilayer graphene
Graphene is a two-dimensional material with exotic electronic, optical and mechanical properties. By stacking two layers of graphene together with a small rotation angle between them, a superlattice of arbitrarily large size can be formed. The hybridization of the electronic states in the two …
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Tikslinis fotovoltinių silicio prietaisų savybių keitimas, panaudojant gilų paviršiaus tekstūrinimą ir dvimatės medžiagos dangas /
… metal-assisted chemical etching and CVD grown two-dimensional material coatings. The modifications were performed with photovoltaic devices in mind. Single-step copper-assisted chemical etching was used to texture the silicon surface, which allowed control over the types and sizes of the …
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Graphene etch mask for silicon
… graphene will be explored. Graphene, a popular two-dimensional material of remarkable electrical properties, has been thought to be a successor to current day microelectronic materials. With the many challenges posed by the manufacture of conventional devices from graphene, other adaptations for …
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Design of Resistivity Instrumentation for a He3 Cryostat and its Application to the Charge Density Wave Superconductor CuxTiSe2
Fermi patches in quasi-two dimensional charge density waves (CDW) have not described the connection to superconductivity (SC) according to theory adequately at this point in time. The connection between CDW and SC in the quasi-two dimensional material CuxTiSe2 is an interesting one which might …
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Surface functionalization of graphene devices
… charge carriers, is emerging as an amazing material for future electronics, due to its outstanding electrical and mechanical performances. However, the lack of a bandgap results in a high off-state current leakage and a nonsaturating drive current, both of which severely limit graphene's …
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H-BN integration in III-nitride devices for green hydrogen applications
… (hexagonal Boron Nitride), which are promising materials for hydrogen production and storage applications thanks to their unique properties. InGaN, for example, offers a tunable band gap, high chemical stability, and good catalytic activity, making it suitable for hydrogen production. However, …
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Graphene-Supported Metal Nanoparticles For Applications in Heterogeneous Catalysis
… "for groundbreaking experiments regarding the two-dimensional material graphene". Microwave-assisted synthesis of various metallic nanostructured materials was investigated for CO oxidation applications. These metallic nanostructured materials were used to convert CO to CO2 as an effective …
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Interactions between 0-Dimensional and 2-Dimensional Materials
This thesis describes two types of interactions between zero-dimensional and two-dimensional materials: energy transfer and surface diffusion. The first chapter introduces zero-dimensional and two-dimensional materials and their unique properties. Based on emerging properties different from bulk …
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Substrate-mediated modulations of graphene’s electronic properties
As a perfectly two-dimensional material graphene is exceptionally susceptible to its environment. In particular, the substrate used to support graphene can dramatically alter its electrical and mechanical properties. In this thesis we investigate the interactions between graphene and three distinct …
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