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Showing 1 to 20 of 37 for “"Metallic films."”.
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Adsorption physics of metals partially coated by metallic films
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Engineering, 1963
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Pulsed-Laser-Induced Melting and Solidification of Thin Metallic Films
… induced melting and solidification of thin metallic films on SiO2. Two distinct topics were pursued: (1) microstructural manipulation and optimization of Cu films via SLS of as-deposited Cu films on SiO2, and (2) investigation of oriented heterogeneous nucleation via complete melting and …
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Micomagnetic calculations of the magnetic properties of thin metallic films
… developed to simulate the magnetisation in a metallic thin film. This is achieved by energy minimisation techniques. The energy of each grain in the medium includes Zeeman, anisotropy, magnetostatic and exchange. The magnetostatic energy is incorporated by considering each grain as a point …
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Mechanical behavior of nanostructured metallic films under compressive and shear loads
… and bonding strengths of nanostructured thin films consisting of arrays of Cu and Ag helical springs. Rectangular areas of films were loaded in uniform compression and shear and the film properties were obtained through the load versus displacement response. The compressive stiffness of the …
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Relationships between grain structure and stress in thin Volmer-Weber metallic films
… film. During deposition of these polycrystalline films, the intrinsic stress for materials of sufficiently high mobility often evolves through three distinct stages, switching from compressive to tensile and back to compressive. Many studies of stress evolution during this process have indicated …
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Optical properties and surface activities of thin metallic films deposited in ultra high vacua
Copper and silver films of various thicknesses were deposited at a rapid rate, from four to twenty-five seconds, on glass substrates in ultra high vacua at pressures of 10⁻⁸ torr or lower. Their optical properties, reflectivity, transmissivity and absorptivity, were determined in vacua and in air …
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Changes of some optical constants of thin metallic films due to exposure to gases
… of freshly evaporated silver and copper films were measured in vacuo and then in the presence of several gases. These measurements were performed, using the photoelectric method, with two photomultiplier tubes (931-A and 1P21), and were made at an angle of incidence of zero degrees for …
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Pattern formation and magnetism in pulsed laser-induced self-organized nanostructures from single and bilayer metallic films
… 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, such as in …
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Angle-resolved photoemission studies of two-dimensional electron systems
… of 2D electron systems, including ultrathin metallic films grown on semiconductor substrates and graphite/graphene layers. Both systems are (quasi) two-dimensional and are of particular interest due to their technological importance. The major experimental tool is angle-resolved photoemission …
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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 data. …
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Microstructural studies of vapor-deposited nickel/ceramic composites
… and consisting of thin ($<$1 micrometer) metallic films on a ceramic substrate. The two major aspects of this research are: (1) the investigation of the effects of ion bombardment on the nucleation behavior and growth morphologies of the films, as well as the development of any …
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Computational modeling of laser-induced delamination testing of thin films
… uses laser-generated stress waves to load thin films at high strain rates and extract the fracture toughness of the film/substrate interface. The effectiveness of the technique in measuring the interface properties of metallic films has been documented in previous studies. The objective of the …
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Hydrogen Loading System Development and Evaluation of Tritiated Substrates to Optimize Performance in Tritium Based Betavoltaics
… hydrogen loading system onto thin metallic films based on differential pressure in calibrated chambers has been developed for conditions pressures and temperatures up to 69 bar and 500°C, respectively. Experiments on hydrogen loading on to palladium films of thickness 50 and 250 nm …
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New Chemistry For The Growth Of First-Row Transition Metal Films By Atomic Layer Deposition
<p>Thin films containing first-row transition metals are widely used in microelectronic, photovoltaic, catalytic, and surface-coating applications. In particular, metallic films are essential for interconnects and seed, barrier, and capping layers in integrated circuitry. Traditional vapor …
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Electrostatic adhesion testing of metallizations on silicon substrates
… forces to generate delaminating stresses in thin metallic films. The interfacial adhesion strength is readily calculated from the electrode geometry and the applied electrostatic field at failure. Unlike other adhesion tests, this technique does not require any mechanical contact and is virtually …
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Design fabrication and calibration of MEMS actuators for in-situ materials testing
Many MEMS devices utilize thin metallic films as mechanical structures. The elastic and plastic properties of these thin films (thickness < 1μm) are significantly different from those of the bulk material. At these scales the volume fraction of material defects such as: grain boundaries, …
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Novel electromagnetic scattering phenomena
… propose two schemes featured by thin metallic films and hybrid plasmonic dielectric nanoresonantors, respectively, aiming at achieving high radiative efficiency in plasmonics. Second, treating free electrons as a near-field scattering excitation, we derive a universal upper limit to …
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Optical Characterization and Evaluation of Dye-Nanoparticle Interactions
… Initially descriptive of light interactions with metallic films, research has branched out to encompass the nanoparticles as well. Generation of the maximum surface plasmon resonance for nanostructures is based on the resonance condition that the oscillatory behavior of the 'free' electrons on the …
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