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Direct to Digital Holography

Description: In this CRADA, Oak Ridge National Laboratory (ORNL) assisted nLine Corporation of Austin, TX in the development of prototype semiconductor wafer inspection tools based on the direct-to-digital holographic (DDH) techniques invented at ORNL. Key components of this work included, development of the first prototype named the Visible Alpha Tool (VAT) that uses visible spectrum illumination of 532 nm, assist in design of second prototype tool named the DUV Alpha Tool (DAT) using deep UV (266 nm) illu… more
Date: June 15, 2003
Creator: Bingham, P.R. & Tobin, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct to Digital Holography

Description: In this CRADA, Oak Ridge National Laboratory (ORNL) assisted nLine Corporation of Austin, TX in the development of prototype semiconductor wafer inspection tools based on the direct-to-digital holographic (DDH) techniques invented at ORNL. Key components of this work included, testing of DDH for detection of defects in High Aspect Ratio (HAR) structures, development of image processing techniques to enhance detection capabilities through the use of both phase and intensity, and development of m… more
Date: June 15, 2002
Creator: Bingham, P.R. & Tobin, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Human genome sequencing with direct x-ray holographic imaging

Description: Direct holographic imaging of biological materials is widely applicable to the study of the structure, properties and action of genetic material. This particular application involves the sequencing of the human genome where prospective genomic imaging technology is composed of three subtechnologies, name an x-ray holographic camera, suitable chemistry and enzymology for the preparation of tagged DNA samples, and the illuminator in the form of an x-ray laser. We report appropriate x-ray camera, … more
Date: June 8, 1993
Creator: Rhodes, C.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Diffraction and holography with photoelectrons and Auger electrons: Some new directions

Description: The current status of photoelectron and Auger-electron diffraction is reviewed, with emphasis on new directions of activity. The use of forward scattering in the study of adsorbed molecules, epitaxial overlayers, and clean surfaces is one of the most developed applications, and one that will become more powerful as higher energy resolution and perhaps spin analysis are used to resolve emitters on the basis of chemical state, position at a surface, or magnetic state. The use of larger data sets … more
Date: June 1, 1992
Creator: Fadley, C.S. (California Univ., Davis, CA (United States) Lawrence Berkeley Lab., CA (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Diffraction and holography with photoelectrons and Auger electrons: Some new directions

Description: The current status of photoelectron and Auger-electron diffraction is reviewed, with emphasis on new directions of activity. The use of forward scattering in the study of adsorbed molecules, epitaxial overlayers, and clean surfaces is one of the most developed applications, and one that will become more powerful as higher energy resolution and perhaps spin analysis are used to resolve emitters on the basis of chemical state, position at a surface, or magnetic state. The use of larger data sets … more
Date: June 1, 1992
Creator: Fadley, C. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Human genome sequencing with direct x-ray holographic imaging. Final report

Description: Direct holographic imaging of biological materials is widely applicable to the study of the structure, properties and action of genetic material. This particular application involves the sequencing of the human genome where prospective genomic imaging technology is composed of three subtechnologies, name an x-ray holographic camera, suitable chemistry and enzymology for the preparation of tagged DNA samples, and the illuminator in the form of an x-ray laser. We report appropriate x-ray camera, … more
Date: June 8, 1993
Creator: Rhodes, C. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characteristics of holograms recorded on Agfa 10E75 plates and processed in D6X developer

Description: This study evaluates the results obtained by using a new developer (D6X) to produce certain types of holograms on Agfa-Gevaert 10E75 plates. D6X developer when used to produce a gamma of one on 10E75 plates, can produce amplitude holograms with 65 percent of the diffraction efficiency (eta) of D-19 with a superior signal-to-noise ratio (S/N). The D6X amplitude holograms are comparable in eta and S/N to D-19 plates recorded with higher reference-to-object beam ratios; 1.3 percent efficiency with… more
Date: June 1, 1977
Creator: Phipps, G. S. & Robertson, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optical measurements laboratory for determining heat transfer coefficients. [For use in Liquid Metal Fast Breeder Reactor Cask Technology Development Program]

Description: A laboratory to be used for determining heat transfer coefficients using the technique of laser holographic interferometry (holometry) is described in this report. The basic theory upon which the experimental measurements are based is derived from first principles. Using a relationship between temperature and index of refraction, several cases of free convection in enclosures are evaluated. Results are presented for a heated hexagonal cylinder in an isothermal circular enclosure. In addition, a… more
Date: June 1, 1976
Creator: Schimmel, W. P. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Meson Transition Form Factors in Light-Front Holographic QCD

Description: We study the photon-to-meson transition form factors (TFFs) F{sub M{gamma}}(Q{sup 2}) for {gamma}{gamma}* {yields} M using light-front holographic methods. The Chern-Simons action, which is a natural form in 5-dimensional anti-de Sitter (AdS) space, leads directly to an expression for the photon-to-pion TFF for a class of confining models. Remarkably, the predicted pion TFF is identical to the leading order QCD result where the distribution amplitude has asymptotic form. The Chern-Simons form i… more
Date: June 22, 2011
Creator: Brodsky, Stanley J.; Cao, Fu-Guang & de Teramond, Guy F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Image Correlation Applied to Single Crystal Plasticity Experiments and Comparison to Strain Gage Data

Description: Full-field optical techniques are becoming increasingly popular for measuring the deformation of materials, especially in materials that exhibit non-uniform behavior. While there are many full-field techniques available (e.g. moire interferometry, electronic speckle pattern interferometry (ESPI), holography, and image correlation [1]), for our study of the deformation of single crystals, the image correlation technique was chosen for its insensitivity to vibrations and ability to measure large … more
Date: June 29, 2005
Creator: LeBlanc, M. M.; Florando, J. N.; Lassila, D. H.; Schmidt, T. & Tyson, J., II
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Imaging of Lamb Waves in Plates for Quantitative Determination of Anisotropy using Photorefractive Dynamic Holography

Description: Anisotropic properties of sheet materials can be determined by measuring the propagation of Lamb waves in different directions. Electromagnetic acoustic transduction and laser ultrasonic methods provide noncontacting approaches that are often desired for application to industrial and processing environments. This paper describes a laser imaging approach utilizing the adaptive property of photorefractive materials to produce a real-time measurement of the antisymmetric Lamb wave mode in all dire… more
Date: June 1, 1998
Creator: Telschow, Kenneth Louis; Deason, Vance Albert; Schley, Robert Scott & Watson, Scott Marshall
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Light-front Holography - A New Approach to Relativistic Hadron Dynamics and Nonperturbative QCD

Description: The holographic mapping of gravity in AdS space to QCD, quantized at fixed light-front time, provides a precise relation between the bound-state amplitudes in the fifth dimension of AdS space and the boost-invariant light-front wavefunctions describing the internal structure of hadrons in physical space-time. In particular, the elastic and transition form factors of the pion and the nucleons are well described in this framework. The light-front AdS/QCD holographic approach thus gives a frame-in… more
Date: June 20, 2012
Creator: de Teramond, Guy F. & Brodsky, Stanley J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Atomic holography with electrons and x-rays: Theoretical and experimental studies

Description: Gabor first proposed holography in 1948 as a means to experimentally record the amplitude and phase of scattered wavefronts, relative to a direct unscattered wave, and to use such a {open_quotes}hologram{close_quotes} to directly image atomic structure. But imaging at atomic resolution has not yet been possible in the way he proposed. Much more recently, Szoeke in 1986 noted that photoexcited atoms can emit photoelectron of fluorescent x-ray wavefronts that are scattered by neighboring atoms, t… more
Date: June 1, 1997
Creator: Len, P. M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Mass-producible micro-holographic tags

Description: Microtags are microscopic computer-generated holograms with 130-nm features and are mass-producible with EUVL. This fabrication method renders microtags difficult to counterfeit. Applications includ tagging and tracking of microprocessors, memory chips, currencey, and credit cards.
Date: June 1, 1996
Creator: Sweatt, W. C.; Ray-Chaudhuri, A. K.; Kravitz, S. H.; Warren, M. E.; Stulen, R. H.; Tichenor, D. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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