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  • 1
    Electronic Resource
    Electronic Resource
    Pulsed laser deposition of diamond-like carbon films (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 5675-5684 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Carbon thin films have been prepared by 248 nm excimer laser vaporization of graphite targets. The effect of a variety of process parameters on the film properties is investigated. Deposition at or below room temperature yields diamond-like films with low hydrogen content, high optical transmission, and high resistivity. Electron energy loss spectra indicate sp3 bond fractions of 70–85%. Detailed analyses of the pseudodielectric functions, measured using spectroscopic ellipsometry, show the films to have normal dispersion and an index of refraction of 2.5 in the visible wavelength region. The effects of a low pressure hydrogen background and the use of auxiliary pulsed and dc plasma enhancements are also examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350501
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  • 2
    Electronic Resource
    Electronic Resource
    Surface topography of ultrathin free-standing [100] gold films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 2206-2210 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Free-standing 40-A(ring)-thick [100] Au films have been produced by vapor deposition which exhibited various types of surface topography when observed by transmission electron microscopy. Here, one surface can be attributed to surface terraces that are a replication of the underlying substrate. The other surface is a combination of a step-ledge growth mechanism and surface nucleation phenomena. It is the purpose here to report upon this expitaxial thin-film growth which has not been observed in thin vapor-deposited metal films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348721
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  • 3
    Electronic Resource
    Electronic Resource
    δ-FeO(OH) and its solid solutions (1979)
    Springer
    Journal of materials science 14 (1979), S. 2929-2936 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract δ-FeO(OH)-type solid solutions have been synthesized with compositions Fe1−x M x O1−x (OH)1+x ranging up tox=0.10 for M=Ca,x=0.35 for M=Mg or Cd andx=0.40 for M=Zn. The phases are characterized by X-ray diffraction and transmission electron microscope studies. A structural model giving satisfactory intensity agreement is postulated for Fe1−x Zn x O1−x (OH)1+x . In this model, Zn2+ ions are situated in the 0 0 0 octahedral sites of space group D 3d 3 -P¯3ml while the Fe3+ ions are almost equally distributed among both octahedral sites (0 0 0 and 0 0 1/2).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00611477
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  • 4
    Electronic Resource
    Electronic Resource
    δ-FeO (OH) and its solutions (1980)
    Springer
    Journal of materials science 15 (1980), S. 959-973 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Decomposition products of δ-FeO(OH)-type Fe1−x M x O1−x (OH)1+x phases (M=Mg, Zn, Ca, Cd) have been studied by X-ray diffraction, electron diffraction and high-resolution transmission electron microscopy. It has been shown that the M=Mg and Cd δ-phases decompose to α-Fe2O3-based solid solutions which in turn undergo exsolution to form some MgO and CdO at a higher temperature. In the case of Fe1−x Zn x O1−x (OH)1+x , the decomposition proceeds over α-Fe2O3 ss to an unstable spinel solid solution. All decomposition products are topotactically related to their precursors in the decomposition chain. In the electron microscope some δ-type phases undergo in situ decomposition under intense beam bombardment with somewhat different results than obtained for thermal decomposition products under ambient conditions. The plate-like morphology and crystal size is retained in the decomposition products; however, the products have a more pitted appearance after decomposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552109
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  • 5
    Electronic Resource
    Electronic Resource
    δ-FeO(OH) and its solid solutions (1980)
    Springer
    Journal of materials science 15 (1980), S. 119-126 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A transmission electron microscope imaging investigation was performed on small δ-FeO(OH) crystallites less than 50 Å thick and several hundred angstroms across. We have observed faceting, and a hexagonal plate-like morphology with topological features near atomic step heights. Because of the mutual magnetic attraction on these particles, they tend to align with their thin direction (c-axis) either parallel or perpendicular to the support film surface. It is therefore possible to view dislocations or buckling of lattice planes of these plates either edge-on or perpendicular to this direction by direct lattice imaging in both the bright-field and dark-field modes. A highly distorted lattice is apparent when viewing the particles edge-on, and it is possible to show lattice projections to a resolution of 2.1 Å.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552435
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  • 6
    Electronic Resource
    Electronic Resource
    A discussion of the systematics of the pressure dependence of the contact charge density for the elements Ag through Te (1978)
    Springer
    Hyperfine interactions 4 (1978), S. 811-812 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021940
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  • 7
    Electronic Resource
    Electronic Resource
    Computer simulation and analysis of high-resolution electron microscope images and diffraction patterns with partial coherence, hollow cone illumination, and virtual apertures (1984)
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 1 (1984), S. 107-130 
    Details
    ISSN: 0741-0581
    Keywords: Phase contrast ; Computer simulation ; Partial coherence ; Electron microscopy ; Convergent beam ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: A general method for computing high-resolution conventional transmission electron microscope images and diffraction patterns, when there are different types of partially coherent illumination conditions, is described. Examples of convergent beam, hollow cone, and virtual aperture illumination conditions are given in the context of interpreting image features. A comparison of real and computed diffraction patterns shows that, in practice, many innovative imaging modes are possible, which can be verified prior to real microscope experiments.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1060010202
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  • 8
    Electronic Resource
    Electronic Resource
    Real time uses of color for electron microscopy via a television-rate digital frame store (1985)
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 2 (1985), S. 405-424 
    Details
    ISSN: 0741-0581
    Keywords: Electron microscopy ; Image processing ; Pseudo color ; Digital frame store ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: An on-line television-rate digital frame store device is utilized to provide color representations of a wide range of electron microscope images and image data. Various types of hardware devices in the frame store coupled with software manipulations via the host computer make rapid image acquisition, modification, measurement, and full-color display possible in real time either from micrographs or directly from an electron microscope. Lookup tables used in conjunction with grey-level image memories can be controlled from a menu display to provide a wide range of color-coding schemes and sequencing. It is also possible to use color graphics overlays and alpha numeric displays along with full-color image displays. This paper will describe many of the recent applications of color developed for electron microscopy studies of materials.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1060020502
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  • 9
    Electronic Resource
    Electronic Resource
    A fast image simulation technique for high resolution electron microscopy with multicomponent atomic species (1991)
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 18 (1991), S. 277-290 
    Details
    ISSN: 0741-0581
    Keywords: Digital television ; Fourier transforms ; Transmission function ; Phase contrast ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: A new method has been developed for simulating high resolution electron microscope images of weak phase objects via a digital television frame store system and fast Fourier transforms of a graphical representation of structures containing several atomic species. Here masks are constructed which consist of circular disk regions whose areas are proportional to the scattering power of the different atom types. These masks represent the object transmission function. The method extends the previous work on image computations of monatomic species objects using small point-like model representations of atom positions. Several examples will be given to verify the relative scattering power from masks corresponding to different atomic species such as Y, Ba, Cu, and O, as well as the limitations of this method for representing objects. Image simulations, which are in agreement with experiments, will also be presented for superconducting oxide materials of the form YBa2Cu3O7 using the circular disk method.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1060180310
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  • 10
    Electronic Resource
    Electronic Resource
    The use of histograms for transmission electron microscopy: Defocus and astigmatism correction at high resolution (1985)
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 2 (1985), S. 371-387 
    Details
    ISSN: 0741-0581
    Keywords: Image processing ; Histograms ; Phase contrast ; High resolution ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: A real-time method for optimizing the defocus of a conventional transmission electron microscope in the phase contrast imaging mode has been investigated using image histogram data. This method can also be used to minimize the objective lens astigmatism. It will be shown both theoretically and empirically, using a digital television frame store, that a histogram will give the largest peak when an image has a broad and flat contrast transfer function. This method has distinct advantages of speed and minimal computational requirements over obtaining the power spectrum of an image.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1060020406
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