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You searched on: Author: sudook kim

Displaying records 11 to 20 of 44 records.
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11. Mode-selective acoustic spectroscopy of trigonal piezoelectric crystals
Published: 5/1/2008
Authors: Ward L Johnson, Carlos F. Martino, Sudook A. Kim, Paul R Heyliger
Abstract: A noncontacting electromagnetic-acoustic-resonance technique is presented for generating and detecting vibrational modes with prescribed symmetries in piezoelectric trigonal crystals with cylindrical geometry. This technique provides the experimental ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50441

12. Elastic constants and internal friction of martensitic steel, ferritic-pearlitic steel, and {alpha}-iron
Published: 4/15/2007
Authors: Sudook A. Kim, Ward L Johnson
Abstract: The elastic constants and internal friction of induction hardened and unhardened SAE 1050 plain-carbon steel were determined by acoustic resonance spectroscopy. The hardened specimen contained only martensite and the unhardened specimen was ferrite-p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50255

13. Elastic constants and internal friction of martensitic steel, ferritic-pearlitic steel, and {alpha}-iron
Published: 1/2/2007
Authors: Sudook A. Kim, Ward L Johnson
Abstract: The elastic constants and internal friction of induction hardened and unhardened SAE 1050 plain-carbon steel were determined by acoustic resonance spectroscopy. The hardened specimen contained only martensite and the unhardened specimen was ferrite- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50233

14. Surface-plasmon enhancement of Brillouin light scattering from gold-nanodisk arrays on glass
Published: 1/1/2007
Authors: Zhandos Utegulov, B. T. Draine, Sudook A. Kim, J. M. Shaw, Ward L Johnson
Abstract: Enhancement of Brillouin light scattering (BLS) at 532 nm was observed from Rayleigh-like and Sezawa-like acoustic modes of alkaline-earth boro-aluminosilicate glass covered with periodic arrays of gold nanodisks. This enhancement is larger than that ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50589

15. Characterization of Magnetic Properties at Edges by Edge Mode Dynamics
Published: 4/21/2006
Authors: Brian B Maranville, Robert D McMichael, Sudook A. Kim, Ward L Johnson, C A Ross, J Cheng
Abstract: We have used trapped spinwave or edge modes of magnetic precession to probe the magnetic environment near magnetic film edges magnetized perpendicular to the edge. Micromagnetic models of dynamics in stripes reveal that the edge mode frequency-fie ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853548

16. Elastodynamic characterization of imprinted nanolines
Published: 4/3/2006
Authors: Ward L Johnson, Colm Flannery, Sudook A. Kim, Roy H. Geiss, Christopher L Soles, Paul R Heyliger
Abstract: Experimental techniques employing Brillouin light scattering (BLS) and analytical techniques employing finite-element (FE) and Farnell-Adler models are being developed for characterizing acoustic modes and determining elastic moduli and dimensions o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50332

17. Brillouin light scattering from pumped uniform-precession and low-k magnons in Ni81Fe19
Published: 3/4/2005
Authors: Ward L Johnson, Sudook A. Kim, Stephen E Russek, Pavel Kabos
Abstract: A method is presented for performing Brillouin-light-scattering measurements on uniform-precession and low-wave-number (Iow-k) magnons excited by a microwave magnetic field in opaque magnetic specimens. The optical configuration is similar to that e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50065

18. ProfIles of material properties in inductlon-hardened steel determined through inversion of resonant acoustic measurements
Published: 1/3/2005
Authors: Ward L Johnson, Sudook A. Kim, S J Norton
Abstract: Electromagnetic-acoustic measurements of resonant frequencies of induction-hardened steel shafts were used in an inverse calculation to determine parameters of the radial variations in the shear constant and density, including the effects of material ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50076

19. Elastic Constants of Layers in Isotropic Laminates
Published: 11/1/2003
Authors: F Hayliger, H M Ledbetter, Sudook A. Kim, Ivar E. Reimanis
Abstract: We determined the individual laminae elastic constants in multilayer laminates composed of dissimilar isotropic layers using acoustic resonance spectroscopy and the linear theory of elasticity. Resonant ultrasound allows one to measure the free-vibr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851293

20. Elastic Constants of Natural Quartz
Published: 8/1/2003
Authors: Paul R Heyliger, H M Ledbetter, Sudook A. Kim
Abstract: We measured the elastic constants of a natural-quartz sphere using resonance-ultrasound spectroscopy (RUS). Our measurements of the near-traction-free vibrational frequencies of the sphere are matched with the predicted frequencies from the dynamic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851248



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