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 20 for “"thin metal films"”.
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Heteroepitaxial Growth and Morphology of Thin Metal Films
In the growth of Cu and Co bilayer nanostructures, a metastable fcc alloy was observed to form despite the well-established immiscibility of Cu and Co in the relevant temperature range ∼600°C. It is established in this study that the alloy forms during the epitaxial growth of Co on Cu by a …
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Interfacial effects on the structure of thin metal films
Three studies of thin metal films grown on semiconductor and insulator substrates are presented. Thin films grown on a substrate decorated by a periodic array of atomic wires can exhibit unusual properties such as stacking faults and electronic topological phase transitions due to the interfacial …
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Solid state interaction between thin metal films and SiO2 substrate.
Thin films of Cu, Ir, Mo, Pt, Re, Y, Yb and Zr were vacuum deposited onto Si02 substrates of thermally oxidized Si< 100 > wafers and were annealed in a vacuum tube furnace. Samples were then analysed using Rutherford Backseattering Spectrometry (RBS) and X-Ray Diffraction (XRD) to determine whether …
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Study of thin metal films and oxide materials for nanoelectronics applications
Different types of thin metal films and oxide materials are studied for their potential application in nanoelectronics: gold and copper films, nickel nanoelectrodes, oxide nanograin superconductors, carboxyl ferromagnetic microspheres and graphene oxide flakes. The crystallization and surface …
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Coadsorption of anions and ultra-thin metal films on single crystal electrodes
… surface analysis of anions and ultra-thin metallic films of copper and silver deposited on single crystal electrodes. The anion and metal coverages from the Auger electron spectroscopy (AES) measurements were compared with results obtained by in situ radiochemical and electrochemical …
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Characterization of a Viscoelastic Response from Thin Metal Films Deposited on Silicon for Microsystem Applications
… The material response to the stress developed within the hinge during actuation controls how the actuator will respond to the actuating force. A fully recoverable non-linear viscoelastic response has been observed in electrostatically driven micro actuators employing torsional hinges of silicon …
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Multiscale Approaches for Simulation of Nucleation, Growth, and Additive Chemistry During Electrochemical Deposition of Thin Metal Films
A two-step approach was used to calculate the spatial distribution of nucleation events on an electrode undergoing deposition by electrolysis under the influence of mass transport. The simulations were carried out by first, calculating the time-dependent concentration profiles in the vicinity of a …
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Thermodynamic stability of Vo2-Metal thin films
Thermodynamic stability of VO2 in contact with metals was conducted on solid thin metal films. The VO2 film was synthesized on a corning glass under optimized condition parameters using rf magnetron reaction sputtering. The samples with structure glass/VO2 were then taken for optical …
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A STUDY OF SWITCHING PHENOMENA IN DISCONTINUOUS AU AND TI FILMS
… properties have been reported in discontinuous thin metal films, and this thesis reports on results for discontinuous gold and discontinuous titanium. Due to apparent similarities in the operation of amorphous semiconductor devices and discontinuous metal devices, some of the more widely …
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Interrelationships of microstructure, stress and diffusion
Extensive research has been performed on thin metal films due to their interesting mechanical, electrical and magnetic properties. They can exhibit very high residual, internal stresses arising from the film growth and/or external effects. Apart from direct mechanical consequences, several …
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Fabrication of extremely smooth blazed diffraction gratings
… number materials, such as gold. Deposition of thin metal film often develops residual stress that adds out-of-plane distortion. In this thesis the out-of-plane distortions due to thin metal films are analyzed using wavefront aberration functions known as the Zernike polynomials. The thin film …
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Study of waveguide and anisotropy effects upon surface acoustic wave velocities in thin films
… waves (SAWs) for mechanical properties of thin metal films in the microelectronic industry. In this work, the effect of elastic anisotropy from silicon wafers on ISTS measurements has been studied. It has been shown that for films of submicron thickness, the anisotropic effects on acoustic …
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Scalable Plasmonic Nanopixels
… polyaniline) coated gold nanoparticles onto a metal mirror, and termed an electrochromic nanoparticle on mirror (eNPoM). The tight confinement of light inside this well-defined and tiny gap volumes allows independent tuning of the individual nanoparticles, which act as active nanopixels. The …
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Figure correction of thin plate and shell substrates using stress generated by ion implantation
I developed a method to correct height errors in thin substrates. Accurately-figured thin plates and shallow shells are important for large-area space telescopes and for the semiconductor industry. Thin substrates can be bent into the desired shape, for example by tens of microns on a 100 mm …
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Tunneling spectroscopy of the two-dimensional electron gas
… for the first time in 2D systems other than thin metal films. As we increase the density, this suppression in tunneling conductance narrows and recedes. Nevertheless suppression reappears when we apply a magnetic field perpendicular to the 2D plane. We find that the tunneling conductance …
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Micromechanics of deformation and stress evolution in thin films and patterned lines on substrates
… volume structures, with specific application to thin metal films and patterned metal lines on substrates. The first part of this investigation dealt with the elastoplastic behavior of interconnect lines during thermal cycling. A robust computational method was developed to predict volume-averaged …
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Solid state superionic stamping design for large area patterning
… process for etching features into thin metal films which has shown the capability of reproducing features below 100 nm in recent years. The technique has significant potential because in addition to its high resolution capability it is both fast and inexpensive. Potential …
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Pattern formation and magnetism in pulsed laser-induced self-organized nanostructures from single and bilayer metallic films
… via nanosecond pulsed laser melting of thin metal films is attractive as a reliable and low cost method to create surface metallic nanostructures. The potential applications of these resulting structures are related to their magnetic, optical, plasmonic, and magneto-optical properties, …