Publications

Sorted by year

Biosensors


  1. M. Yamato, T. Matsuzaki, R. Araki, S. Tsuchida, K. Okuda, H. Ying, S. Sanada, H. Asanuma, Y. Asano, M. Asakura, S. Takashima, M. Kitakaze, K. Noi, H. Torii, H. Ogi, R. Iwamoto, E. Mekada, Y. Sakata, and T. Minamino, "RNA aptamer binds heparin-binding epidermal growth factor-like growth factor with high affinity and specificity and neutralizes its activity", Int. J. Gerontology in press (2017).
  2. K. Nakajima, M. So, K. Takahashi,Y. Tagawa, M. H, Y. Goto, and H. Ogi "Optimized Ultrasonic Irradiation Finds Out Ultra-stable A¶¬1°›40 Oligomer", J. Phys. Chem. B 121(12), pp. 2603-2613 (2017).
  3. K. Nakajima, D. Nishioka, M. Hirao, M. So, Y. Goto, and H. Ogi "Drastic acceleration of fibrillation of insulin by transient cavitation bubble", Ultrason. Sonochem. 36, 206-211 (2017).
  4. K. Nakajima, H. Ogi, K. Adachi, K. Noi, M. Hirao, H. Yagi, and Y. Goto: "Nucleus factory on cavitation bubble for amyloid ¶¬ fibril", Sci. Rep. 6, 22015 (2016).
  5. T. Shagawa, H. Torii, F. Kato, H. Ogi, and M. Hirao, "Viscoelasticity evolution in protein layers during binding reactions evaluated by a high-frequency wireless and electrodeless QCM biosensor without dissipation", Jpn. J. Appl. Phys. 54, 096601 (2015).
  6. T. Shagawa, H. Torii, F. Kato, H. Ogi, and M. Hirao, "Relationship between viscosity change and specificity in protein binding reaction studied by high frequency wireless-electrodeless MEMS biosensor", Jpn. J. Appl. Phys. 54, 068001 (2015).
  7. H. Johjima, K. Noi, S. Nishikori, H. Ogi, M. Esaki, and T. Ogura "Microtubule severing by katanin p60 AAA+ ATPase requires the C-terminal acidic tails of both ¶Ń- and ¶¬-tubulins and basic amino acid residues in the AAA+ ring pore", J. Biol. Chem. 290(18), 11762 (2015).
  8. H. Hamada, H. Ogi, K. Noi, H. Yagi, Y. Goto, and M. Hirao "Nucleation-fibrillation dynamics of A¶¬1°›40 peptides on liquid-solid surface studied by total-internal-reflection fluorescence microscopy coupled with quartz-crystal microbalance biosensor", Jpn. J. Appl. Phys. (2015) in press.
  9. H. Ogi, M. Fukukshima, H. Hamada, K. Noi, M. Hirao, H. Yagi, and Y. Goto "Ultrafast propagation of ¶¬-amyloid fibrils in oligomeric cloud", Sci. Rep. 4, 6960 (2014).
  10. K. Uehara, H. Ogi, and M. Hirao "Enhancement of Ultrahigh-Frequency Vibration of Au/Si3N4 Composite Resonator with Picosecond Ultrasound", Appl. Phys. Express 7, 025201 (2014).
  11. H. Ogi, "Wireless-electrodeless quartz-crystal-microbalance biosensors for studying interactions among biomolecules: A review", Proc. Jpn. Acad. Ser. B, (2013) in press.
  12. F. Kato, K. Tsurimoto, H. Ogi, and M. Hirao, "Application of Sandwich Assay to RAMNE-Q Biosensor for High-selective Detection of C-reactive Protein", Jpn. J. Appl. Phys. 52, in press.
  13. K. Uesugi, H. Ogi, M. Fukushima1, M. So, H. Yagi, Y. Goto, and M. Hirao, "Mechanisms of Ultrasonically Induced Fibrillation of Amyloid β1-40 Peptides", Jpn. J. Appl. Phys. 52, in press.
  14. Y. Yoshimura, Y. Lin, H. Yagi, Y.-H. Lee, H. Kitayama, K. Sakurai, M. So, H. Ogi, H. Naiki, and Y. Goto, "Distinguishing crystal-like amyloid fibrils and glass-like amorphous aggregates from their kinetics of formation", Proc. Nat. Acad. Sci. USA 109, 14446-14451 (2012).
  15. H. Ogi, M. Fukushima, K. Uesugi, H. Yagi, Y. Goto, and M. Hirao, "Acceleration of deposition of Aβ1-40 peptide on ultrasonically formed Aβ1-42 nucleus studied by wireless quartz-crystal-microbalance biosensor", Biosens. Bioelectron. 40, 200-205 (2013).
  16. H. Ogi, T. Kawamoto, Y. Nakamichi, and M. Hirao, "Picosecond Ultrasound Spectroscopy with a Stable Fiber Laser for Ultrahigh-Frequency-Oscillator Applications: from Nanomechanics to Biosensors", Jpn. J. Appl. Phys. 51 07GA08 (2012).
  17. F. Kato, H. Ogi, T. Yanagida, S. Nishikawa, M. Hirao, and M. Nishiyama, "Resonance Acoustic Microbalance with Naked-Embedded Quartz (RAMNE-Q) Biosensor Fabricated by Microelectromechanical-System Process", Biosen. Bioelectron. 33, 139-145 (2012).
  18. M. So, H. Yagi, K. Sakura, H. Ogi, H. Naiki, and Y. Goto "Ultrasonication-Dependent Acceleration of the Formation of Amyloid Fibrils", J. Mol. Biol. 412, 568-577 (2011).
  19. H. Ogi, T. Yanagida, M. Hirao, and M. Nishiyama "Replacement-Free Mass-Amplified Sandwich Assay with 180-MHz Electrodeless Quartz-Crystal Microbalance Biosensor", Biosen. Bioelectron. 26, 4819-4822 (2011).
  20. H. Ogi, Y. Fukunishi, T. Yanagida, H. Yagi, Y. Goto, M. Fukushima, K. Uesugi, and M. Hirao, "Seed-dependent deposition behavior of A-beta peptides studied with wireless quartz-crystal-microbalance biosensor", Anal. Chem. 83, 4982-4988 (2011).
  21. F. Kato, H. Ogi, T. Yanagida, S. Nishikawa, M. Nishiyama, and M. Hirao, "High-Frequency Electrodeless Quartz Crystal Microbalance (QCM) Chip with a Bare Quartz Resonator Encapsulated in a Silicon Microchannel",Jpn. J. Appl. Phys. 50, 07HD03 (2011).
  22. H. Ogi, T. Kawamoto, N. Nakamura, M. Hirao, and M. Nishiyama "Ultrathin Film Oscillator Biosensors Excited by Ultrafast Light Pulses",Biosen. Bioelectron. 26, 1273-1277 (2010).
  23. H. Ogi, H. Nagai,Y. Fukunishi, T. Yanagida, M. Hirao, and M. Nishiyama "Multichannel Wireless-Electrodeless Quartz-Crystal Microbalance Immunosensor", Anal. Chem. 82, 3957-3962 (2010).
  24. H. Ogi, H. Nagai,Y. Fukunishi, T. Yanagida, M. Hirao, and M. Nishiyama "Development of 170 MHz Electrodeless Quartz-Crystal Microbalance Immunosensor with Nonspecifically Immobilized Receptor Proteins", Jpn. J. Appl. Phys. 49, 07HD07(2010).
  25. H. Ogi, K. Matsumoto, Y. Fujita, T. Kawamoto, N. Nakamura, and M. Hirao "Label-Free Ultrathin Pt Film Biosensor Using Phonon Vibrations Excited by Ultrafast Light Pulses", Appl. Phys. Express 3, 017001 (2010).
  26. H. Ogi, H. Nagai,Y. Fukunishi, M. Hirao, and M. Nishiyama "170-MHz Electrodeless Quartz Crystal Microbalance Biosensor: Capability and Limitation of Higher Frequency Measurement", Anal. Chem. 81, 8068-8073 (2009).
  27. H. Ogi, K. Okamoto, H. Nagai,Y. Fukunishi, and M. Hirao, "Replacement-Free Electrodeless Quartz Crystal Microbalance Biosensor Using Nonspecific-Adsorption of Streptavidin on Quartz", Anal. Chem. 81, 4015-4020 (2009).
  28. H. Ogi, Y. Fukunishi, H.Nagai, K. Okamoto, M. Hirao, and M. Nishiyama "Nonspecific-Adsorption Behavior of Polyethylenglycol and Bovine Serum Albumin Studied by 55-MHz Wireless-Electrodeless Quartz Crystal Microbalance", Biosens. Bioelectron. 24, 3148–3152 (2009).
  29. H. Ogi, K. Hatanaka, Y. Fukunishi, H. Nagai, M. Hirao, and M. Nishiyama "Aggregation Behavior of Amyloid beta 1-42 Peptide Studied by 55-MHz Wireless-Electrodeless Quartz-Crystal Microbalance", Jpn. J. Appl. Phys. 48 (2009) 07GF01.
  30. H. Ogi, Y. Fukunishi, T. Omori, K. Hatanaka, M. Hirao, and M. Nishiyama, "Effects of Flow Rate on Sensitivity and Affinity in Flow-Injection Biosensor Systems Studied by 55-MHz Wireless QCM", Anal. Chem. 80, 5494-5500 (2008).
  31. H. Ogi, Y. Fukunishi, T. Omori, K. Hatanaka, M. Hirao, and M. Nishiyama, "Effects of Flow Rate on Sensitivity and Affinity in Flow-Injection Biosensor Systems Studied by 55-MHz Wireless QCM", Anal. Chem. 80, 5494-5500 (2008).
  32. H. Ogi, K. Motohisa, K. Hatanaka, T. Ohmori, M. Hirao, and M. Nishiyama, "Concentration Dependence of IgG-Protein A Affinity Studied by Wireless-Electrodeless QCM", Biosens. Bioelectron. 22, 3238–3242 (2007).
  33. H. Ogi, K. Motohisa, K. Hatanaka, T. Ohmori, M. Hirao, and M. Nishiyama, "High-Frequency Wireless and Electrodeless Quartz Crystal Microbalance Developed as Immunosensor", Jpn. J. Appl. Phys. 46, 4693-4697 (2007).
  34. H. Ogi, K. Motohisa, T. Matsumoto, K. Hatanaka, and M. Hirao, "Isolated Electrodeless High-Frequency Quartz Crystal Microbalance for Immunosensors", Anal. Chem. 78, 6903-6909 (2006).
  35. H. Ogi, K. Motohisa, T. Matsumoto, T. Mizugaki, and M. Hirao, "Wireless electrodeless piezomagnetic biosensor with an isolated nickel oscillator", Biosens. Bioelectron. 21, 2001-2005 (2006).


Structure and acoustical property of colloidal glass


  1. N. Nakamura, K. Inayama, T. Okuno, H. Ogi, and M. Hiram "Accelerated crystallization of colloidal glass by mechanical oscillation", Sci. Rep. 7, 1396 (2017).


Elasticity, internal friction, and micromechanics of advanced materials


  1. K. Adachi, H. Ogi, A. Nagakubo, N. Nakamura, M. Hirao, M. Imade, M. Yoshimura, and Y. Mori "Piezoelectric coefficients of GaN determined by hopping conduction of carriers", Appl. Phys. Lett. 109, 182108 (2016).
  2. H. Ogi, T. Ishihara, H. Ishida, A. Nagakubo, N. Nakamura, and M. Hirao, "Thermal mode spectroscopy for thermal diffuusivity of millimeter-size solids", Phys. Rev. Lett. 117, 195901, (2016).
  3. K. Adachi, H. Ogi, A. Nagakubo, N. Nakamura, M. Hirao, M. Imade, M. Yoshimura, and Y. Mori, "Elastic constants of GaN between 10 and 305 K", J. Appl. Phys. 119, 245111 (2016).
  4. H. Ogi, S. Masuda, A. Nagakubo, N. Nakamura, M. Hirao, K. Kondou, and T. Ono: "Impact of interface stiffness in surface-wave resonances on nano-strip-attached substrates", Phys. Rev. B 93, 024112 (2016).
  5. A. Nagakubo, H. Ogi, H. Ishida, M. Hirao, T. Yokoyama, and T. Nishihara, "Temperature behavior of sound velocity of fluorine-doped vitreous silica thin films studied by picosecond ultrasonics", J. Appl. Phys. 118, 014307 (2015).
  6. H. Ogi, Y. Tsutsui, N. Nakamura, A. Nagakubo, M. Hirao, M. Imade, M. Yoshimura, and Y. Mori, "Hopping conduction and piezoelectricity in Fe-doped GaN studied by non-contacting resonant ultrasound spectroscopy", Appl. Phys. Lett. 106, 091901 (2015).
  7. R. Tarumi, H. Ledbetter, H. Ogi and M. Hirao, "Low-temperature elastic constants of monocrystal corundum (alpha-Al2O3)", Phil. Mag., (2013) in press.
  8. N. Nakamura, N. Yoshimura, H. Og, and M. Hirao, "Elastic constants of polycrystalline L10 FePt at high temperatures", J. Appl. Phys. 114, 093506 (2013).
  9. M. Tane, Y. Okuda, Y. Todaka, H. Ogi, and A. Nagakubo, "Elastic properties of a single-crystalline ¶ō phase in titanium", Acta Mater., (2013) in press.
  10. K. Tanigaki, H. Ogi, H. Sumiya, K. Kusakabe, N. Nakamura, M. Hirao, and H. Ledbetter, "Observation of higher stiffness in nanopolycrystal diamond than monocrystal diamond", Nat. Commun., 4, 2343 (2013).
  11. A. Nagakubo, H. Ogi, H. Sumiya, K. Kusakabe, and M. Hirao, "Elastic constants of cubic and wurtzite boron nitrides", Appl. Phys. Lett., in press.
  12. N. Nakamura, M. Sakamoto, H. Ogi, and M. Hirao, "Elastic constants of langasite and alpha quartz at high temperatures measured by antenna transmission acoustic resonance", Rev. Sci. Instrum. 83, 073901 (2012).
  13. A. Nagakubo, A. Yamamoto, K. Tanigaki, H. Ogi, N. Nakamura, and M. Hirao, "Monitoring of the Low-Temperature Phase Transitions of SrTiO3 Using Picosecond Ultrasound Spectroscopy", Jpn. J. Appl. Phys. (2012) in press.
  14. N. Nakamura, H. Ogi, and M. Hirao, "Elastic, anelastic and piezoelectric coefficients of GaN", J. Appl. Phys. 111, 013509 (2012).
  15. R. Tarumi, H. Nitta, H. Ogi, and M. Hirao "Low-temperature elastic constants and piezoelectric coefficients of langasite (La3Ga5SiO14)", Phil. Mag. 91, 2140-2153 (2011).
  16. R. Tarumi, H. Ledbetter, S. Shiomi, H. Ogi, M. Hirao, A. P. Tsai, "Elastic constants and anisotropic internal frictions of decagonal Al72Ni18Co8 single quasicrystal at low temperatures", J. Appl. Phys. 108, 013514 (2010).
  17. R. Tarumi, K. Shiraishi, and M. Hirao "High Temperature Elastic Constants of α-Fe Single Crystal Studied by Electromagnetic Acoustic Resonance", ISIJ Int. 49, 1432-1435 (2009).
  18. R. Tarumi, Y. Kawasaki, H. Ogi, M. Hirao, and T. Kagayama, é°é»Pressure-Dependent Shear Modulus of Polycrystalline Al Studied by Electromagnetic Acoustic Resonanceé°é…, Jpn. J. Appl. Phys. 47, 1763-1766 ( 2008).
  19. R. Tarumi, K. Nakamura, H. Ogi, and M. Hirao, é°é…Complete set of elastic and piezoelectric coefficients of alpha-quartz at low temperaturesé°é…, J. Appl. Phys. in press (2007).
  20. H. Ogi, T. Ohmori, N. Nakamura, and M. Hirao, "Elastic, anelastic, and piezoelectric coefficients of alpha-quartz determined by resonance ultrasound spectroscopy", J. Appl. Phys. 100, 053511 (2006).
  21. R. Tarumi, Y. Yoshimoto, S. Shiomi, H. Ogi, M. Hirao and A. P. Tsai, "Low temperature elastic and anelastic properties of an i-AlPdMn single quasicrystal", Mater. Sci. Eng. A, 442, 39-42 (2006).
  22. R. Tarumi, Y. Kawasaki, Y. Tabe, H. Ogi, M. Hirao and T. Kagayama, "Magnetic phase transition and elastic properties of alpha-Mn at low temperature", Jpn. J. Appl. Phys. 45, 4497-4499 (2006).
  23. R. Tarumi, T. Yonemoto, H. Ogi, M. Hirao, T. Inamura, H. Hosoda and S. Miyazaki, "Acoustic Study of Martensitic Phase Transformation in TiNbAl Shape Memory Alloy", Jpn. J. Appl. Phys., 44, 4322-4324 (2005).
  24. H. Ogi, A. Tsujimoto, S. Nishimura, and M. Hirao, "Acoustic Study of Kinetics of Vacancy Diffusion toward Dislocations in Aluminum", Acta Materialia, 53, pp. 513-517 (2005).
  25. H. Ledbetter, A. Migliori, J. Betts, R. G. Leisure, and H. Ogi, "Low-temperature elastic and piezoelectric constants of paratellurite (alpha-TeO2)", J. Appl. Phys., 96, pp. 6201-6206 (2004).
  26. H. Ledbetter, H. Ogi, S. Kai, S. Kim, and M. Hirao, "Elastic constants of titanium's b.c.c. monocrystals", J. Appl. Phys., 95, pp. 4642-4644 (2004).
  27. H. Ogi, S. Kai, H. Ledbetter, R. Tarumi, M. Hirao, and K. Takashima, "Titanium's high-temperature elastic constants through the hcp-bcc phase transformation", Acta Materialia, 52, 2075-2080 (2004.).
  28. H. Ogi, M. Fukunaga, M. Hirao, and H. Ledbetter, "Elastic constants, internal friction, and piezoelectric coefficient of alfa-TeO2", Phys. Rev. B., 69, 024104 (2004).
  29. H. Ogi, N. Nakamura, M. Hirao, and H. Ledbetter, "Determination of elastic, anelastic, and piezoelectric coefficients of piezoelectric materials from a single specimen by acoustic resonance spectroscopy", Ultrasonics, 42, 183-187 (2004).
  30. T. Ichitsubo, S. Kai, H. Ogi, M. Hirao, and K. Tanaka, "Elastic and anelastic behaviors of Zr55A10Ni5Cu30 bulk metallic glass around the glass transition temperature under ultrasonic excitation", Scripta Mater., 49, 267-271 (2003).
  31. H. Ledbetter, H. Ogi, and N. Nakamura: "Elastic, anelastic, piezoelectric coefficients of monocrystal lithium niobate", Mech. Mater., (2003), in press.
  32. T. Ichitsubo, T. Seto, H. Ogi, M. Hirao, and H. Inui: "Elastic constants predicted from sintered porous MgB2 via micromechanics modeling", Materials Letters, 57, 3910-3913 (2003).
  33. H. Ogi, N. Nakamura, K. Sato, M. Hirao, and S. Uda: "Elastic, anelastic, and piezoelectric coefficients of langasite (La3Ga5SiO14): Resonance ultrasound spectroscopy with laser-Doppler interferometry", IEEEé°é°Trans. Ultrason. Freq. Contr., 50, 553-560 (2003).
  34. M. Tane, T. Ichitsubo, H. Ogi, and M. Hirao, é°é»Elastic property of aged duplex stainless steelé°é…, Scripta Mater. 48, 229-234 (2003).
  35. H. Ogi, S. Kai. T. Ichitsubo, M. Hirao, and K. Takashima, é°é»Elastic-stiffness coefficients of a silicon-carbide fiber at elevated temperatures: Acoustic spectroscopy and micromechanics modelingé°é…, Philos. Mag. A.é°é°83, 503-512 (2003).
  36. T. Ichitsubo, H. Ogi, S. Nishimura, T. Seto, M. Hirao, and H. Inui, "Elastic Stiffness and Ultrasonic Attenuation of Superconductor MgB2 at Low Temperatures", Phys. Rev. B, 66, 052514 (2002).
  37. H. Ogi, K. Sato, T. Asada, and M. Hirao, é°é»Complete mode identification for resonance ultrasound spectroscopyé°é…, J. Acoust. Soc. Am., 112, 2553-2557 (2002).
  38. H. Ogi, Y. Kawasaki, M. Hirao, and H. Ledbetter, é°é»Acoustic spectroscopy of lithium niobate: Elastic and piezoelectric coefficientsé°é…, J. Appl. Phys., 92, 2451-2456 (2002).
  39. T. Ichitsubo, M. Tane, H. Ogi, M. Hirao, T. Ikeda and H. Nakajim: é°é»Anisotropic Elastic Constants of Lotus-Type Porous Copper : Measurements and Micromechanics Modeling, Acta Materialia, 50, 4105-4115 (2002).
  40. T. Ichitsubo, H. Ogi, M. Hirao, K. Tanaka, M. Osawa, T. Yokokawa, T. Kobayashi, and H. Harada: "Elastic constant measurement of Ni-base superalloy with the RUS and mode selective EMAR methods", Ultrasonics, 40, 211-215, (2002).
  41. H. Ogi H. Ledbetter, and Sudook Kim: "Snoek Relaxation and Dislocation Damping in Aged Fe-Cu-Ni Steel ", Metal. Material Trans A, 32A, 1671-1677 (2001).
  42. H. Ogi, P. Heyliger, H. Ledbetter, and S. Kim: "Mode-selective resonance ultrasound spectroscopy of a layered parallelepiped", J. Acoust. Soc.Am. , 108, 2829-2834 (2000).
  43. H. Ogi, H. Ledbetter, K. Takashima, G. Shimoike, and M. Hirao: "Elastic Properties of a crossply SiCf/Ti composite at elevated temperatures", Metal.Mater. Trans. A, 32A, 425-429 (2001).
  44. S. Kim, H. Ledbetter and H. Ogi: "Elastic Properties of Nb-Ti/Cu composite", J.Appl. Phys., 88, 2378-2381 (2000).
  45. H. Ogi, M. Dunn, K. Takashima, and H. Ledbetter: Elastic Properties of SiCf / Ti Unidirectional Composite: Acoustic-Resonance Measurements and Micromechanics Predictions, J. Appl. Phys. ,87, pp. 2769-2774 (2000).
  46. K. Tanaka, S. Okazaki, T. Ichitsubo, T. Yamamoto, H. Inui, M. Yamaguchi and M. Koiwa: Evaluation of elastic strain energy associated with the formation of hydride precipitates in LaNi5, Intermetallics 8 Nos. 5-6, 613-618 (2000).
  47. H. Ogi, H. Ledbetter, and S. Kim: Snoek Relaxation in Copper-Precipitated Alloy Steel, J. Alloys and Compounds, 310, 432-435 (2000).
  48. H. Ogi, A. Tsujimoto, M. Hirao, and H. Ledbetter: Stress-Dependent Recovery of Point Defects in Deformed Aluminum: An Acoustic-Damping Study, Acta Materialia, 47, 3745-3751 (1999).
  49. H.Ogi, K. Takashima, H. Ledbetter, M. Dunn, G. Shimoike, M. Hirao, and P. Bowen: Elastic Constants and Internal Friction of an SiC-Fiber-Reinforced Ti-Alloy-Matrix Crossply Composite: Measurement and Theory, Acta Materialia, 47, pp. 2787-2796 (1999).
  50. H. Ogi, H. Ledbetter, S. Kim, and M. Hirao: "Contactless Mode-Selective Resonance Ultrasound Spectroscopy: Electromagnetic Acoustic Resonanceé°éß J. Acoust. Soc. Am., 106, pp. 660-665 (1999).
  51. H. Ogi, N. Suzuki, and M. Hirao: Electromagnetic Acoustic Resonance for Studying Dislocation Formation in Polycrystalline Pure CopperDuring Deformation, Proc. of 1997 IEEE Ultrasonic Symposium, 507-510(1998).


Elastic constants and functions of thin films and nano materials


  1. N. Nakamura and H. Ogi "Resistive spectroscopy coupled with non-contacting oscillator for detecting discontinuous-continuous transition of metallic films", Appl. Phys. Lett. 111, 101902 (2017).
  2. N. Nakamura, N. Yoshimura, H. Ogi, and M. Hirao, "Formation of continuous metallic film on quartz studied by noncontact resonant ultrasound spectroscopy", J. Appl. Phys. 118, 085302 (2015).
  3. A. Nagakubo, H. Ogi, H. Ishida, M. Hirao, T. Yokoyama, and T. Nishihara, "Temperature behavior of sound velocity of fluorine-doped vitreous silica thin films studied by picosecond ultrasonics", J. Appl. Phys. (2015) in press.
  4. A. Nagakubo, M. Arita, T. Yokoyama, S. Matsuda, M. Ueda, H. Ogi, and M. Hirao "Acoustic properties of co-doped AlN thin films at low temperatures studied by picosecond ultrasonics", Jpn. J. Appl. Phys. (2015) in press.
  5. H. Ogi, Y. Sakamoto, and M. Hirao "Calibration-free portable Young's-modulus tester with isolated langasite oscillator", Ultrasonics (2014) in press.
  6. F. Kato, K. Tsurimoto, H. Ogi, and M. Hirao, "Application of Sandwich Assay to RAMNE-Q Biosensor for High-selective Detection of C-reactive Protein", Jpn. J. Appl. Phys. 52, in press.
  7. M. Tane, S. Nakano, R. Nakamura, H. Ogi, M. Ishimaru, H. Kimizuka, and H. Nakajima, "Nanovoid Formation by Change in Amorphous Structure through the Annealing of Amorphous Al2O3 Thin Films", Acta Mater. in press (2011).
  8. H. Ogi, N. Nakamura, and M. Hirao, "Picosecond Ultrasound Spectroscopy for Studying Elastic Modulus of Thin Films: A Review",Nondestr. Test Eval. in press (2011), invited.
  9. N. Nakamura, A. Uranishi, M. Wakita, H. Ogi, M. Hirao, and M. Nishiyama "Elastic stiffness of L10 FePt thin film studied by picosecond ultrasonics",Appl. Phys. Lett. 98, 101911 (2011).
  10. H. Ogi, A. Yamamoto, K. Kondou, K. Nakano, K. Morita, N. Nakamura, T. Ono, and M. Hirao "Significant softening of copper nanowires during electromigration studied by picosecond ultrasound spectroscopy",Phys. Rev. B 82, 155436 (2010).
  11. N. Nakamura, Y. Kake, H. Ogi, and M. Hirao "Strong strain-dependent elastic stiffness in ultrathin Pt films on MgO", J. Appl. Phys. 108, 043525 (2010).
  12. N. Nakamura, T. Nakashima, H. Ogi, M. Hirao, and M. Nishiyama "Fast recovery of elastic constant in thin films studied by resonant-ultrasound spectroscopy", J. Appl. Phys. 107, 103541 (2010).
  13. K. Tanigaki, T. Kusumoto, H. Ogi, N. Nakamura, M. Hirao, "Measurement of Elastic Constant and Refraction Index of Thin Films at Low Temperatures Using Picosecond Ultrasound", Jpn. J. Appl. Phys. 49, 07HB01 (2010).
  14. N. Nakamura, A. Uranishi, M. Wakita, H. Ogi, and M. Hirao, "Annealing effect on acoustic property of Fe/Pt superlattice studied by picosecond ultrasound", Jpn. J. Appl. Phys. 49, 07HB04 (2010).
  15. N. Nakamura, T. Nakashima, S. Oura, H. Ogi, and M. Hirao "Resonant-Ultrasound Spectroscopy for Studying Annealing Effect on Elastic Constant of Thin Film", Ultrasonics 50, 150-154 (2010).
  16. H. Ogi, T. Shagawa, N. Nakamura, and M. Hirao "Extraction of Interface Stiffness in Superlattices: Proposal of the Interface Elasticity Parameter", Appl. Phys. Express 2, 105001 (2009).
  17. H. Tanei, K. Kusakabe, H. Ogi, N. Nakamura, and M. Hirao, "Observation of gamma-point phonon frequency in ultrathin metallic films confirmed by ab initio calculation and lattice dynamics", Appl. Phys. Lett. in press (2009).
  18. N. Nakamura, T. Nakashima, H. Ogi, M. Hirao, and M. Nishiyama, "Fast Recovery of Elastic Stiffness in Ag Thin Film Studied by Resonant-Ultrasound Spectroscopy", Jpn. J. Appl. Phys. in press.
  19. H. Ogi, T. Shagawa, N. Nakamura, M. Hirao, H. Odaka, and N. Kihara "Elastic-Constant Measurement in Oxide and Semiconductor Thin Films by Brillouin Oscillations Excited by Picosecond Ultrasound", Jpn. J. Appl. Phys. in press.
  20. H. Tanei, K. Tanigaki, K. Kusakabe, H. Ogi, N. Nakamura, and M. Hirao, "Stacking-Fault Structure Explains Unusual Elasticity of Nanocrystalline Diamonds", Appl. Phys. Lett. 94, 041914 (2009).
  21. N. Nakamura, A. Uranishi, T. Shagawa, H. Ogi, M. Hirao, and M. Nishiyama, "Laser-Induced Coherent Acoustic Phonons for Measuring Elastic Constants of Ultra-Thin Films", Journal of Solid Mechanics and Materials Engineering 2, 1420-1426 (2008).
  22. H. Ogi, T. Shagawa, N. Nakamura, M. Hirao, H. Odaka, N. Kihara, "Elastic constant and Brillouin oscillations in sputtered vitreous SiO2 thin films", Phys. Rev. B 78, 134204 (2008)..
  23. N. Nakamura, H. Ogi, and M. Hirao, "Stable Elasticity of Epitaxial Cu Thin Films on Si", Phys. Rev. B 77, 245416 (2008).
  24. H. Ogi, T. Inoue, H. Nagai, and M. Hirao, "Quantitative imaging of Young's modulus of solids: A contact-mechanics study", Rev. Sci. Instrum. 79, 053701 (2008).
  25. N. Nakamura, H. Ogi, T. Shagawa, and M. Hirao, "Recovery of Elastic Constant of Ultrathin Cu Films by Low Temperature Annealing", Appl. Phys. Lett. 92, 141901 (2008).
  26. J. Tian, H. Ogi, T. Tada, and M. Hirao, "A Freestanding Oscillator for Resonant-Ultrasound Microscopy", IEEE Trans. Ultrason. Ferroelect. Freq. Contr. 55, pp. 499-502 (2008).
  27. H. Tanei, N. Nakamura, Y. Kake, H. Ogi, K. Kusakabe, and M. Hirao, "Elastic constants of Co/Pt superlattice studied by acoustic measurements and ab initio calculations", Jpn. J. Appl. Phys. 47 (2008) 3847-3850.
  28. N. Nakamura, H. Ogi, M. Hirao, T. Fukuhara, K. Shiroki, and N. Imaizumi, "Elastic Constants of Single-Crystal Rare-Earth Bismuth Iron Garnet Films", Jpn. J. Appl. Phys. (2008) in press.
  29. H. Tanei, N. Nakamura, H. Ogi, M. Hirao, R. Ikeda, "Unusual elastic behavior of nanocrystalline diamond thin films", Phys. Rev. Lett. 100, 016804 (2008).
  30. N. Nakamura, H. Ogi, T. Yasui, M. Fujii, and M. Hirao, "Mechanism of Elastic Softening Behavior in Superlattice", Phys. Rev. Lett. 99, 035502 (2007).
  31. H. Ogi, M. Fujii, N. Nakamura, T. Shagawa, and M. Hirao, "Resonance acoustic-phonon spectroscopy for studying elasticity of ultrathin films", Appl. Phys. Lett. 90, 191906 (2007).
  32. H. Ogi, M. Fujii, N. Nakamura, T. Yasui, and M. Hirao, "Stiffened ultrathin Pt films confirmed by acoustic-phonon resonances", Phys. Rev. Lett. 98, 195503 (2007).
  33. N. Nakamura, H. Ogi, T. Nakashima, M. Hirao, and M. Nishiyama, "Fast Recovery of Elasticity of Cu Thin Films at Room Temperature Studied by Resonant-Ultrasound Spectroscopy", Jpn. J. Appl. Phys., 46, 4450-4453 (2007).
  34. R. Tarumi, A. Shibata, H. Ogi, M. Hirao, K. Takashima, and Y. Higo, "Elastic anisotropy of an Fe79Si12B9 amorphous alloy thin film studied by ultrasound spectroscopy", J. Appl. Phys. 101, 053519 (2007).
  35. H. Ogi, N. Hayama, H. Niho, M. Hirao, and T.o Morishita, "Imaging of local stiffness of damaged polycrystalline copper: Nondestructive evaluation by resonance ultrasound microscopy", IEEE Trans. Ultrason. Freq. Contr., 54, 1514-1520 (2007).
  36. H. Ogi, H. Niho, and M. Hirao, "Elastic-Stiffness Distribution on Dual-Phase Stainless Steel Studied by Resonance Ultrasound Microscopy", Acta Materialia, 54, 4143-4148 (2006).
  37. H. Ogi, M. Hirao, T. Tada, and J. Tian, "Elastic-stiffness distribution on polycrystalline copper studied by resonance ultrasound microscopy: Young's modulus microscopy", Phys. Rev. B, 73, 174107 (2006) .
  38. H. Ogi, H. Niho, and M. Hirao, "Internal-friction mapping on solids by resonance ultrasound microscopy", Appl. Phys. Lett. 88, 141110 (2006).
  39. N. Nakamura, H. Ogi, H. Nitta, H. Tanei, M. Fujii, T. Yasui, and M. Hirao, "Study of Elastic Anisotropy of Cu Thin Films by Resonant-Ultrasound Spectroscopy Coupled with Laser-Doppler Interferometry and Pump-Probe Photoacoustics", Jpn. J. Appl. Phys. 45, 4580-4584 (2006).
  40. R. Ikeda, H. Tanei, N. Nakamura, H. Ogi, A. Sawabe, M. Hirao, M. Takemoto, "Elastic constant of nanocrystalline diamond film", Diamon. Relat. Mater., 15, 729-734 (2006).
  41. J. Tian, H. Ogi, and M. Hirao, "Effect of elastic anisotropy on contact stiffness for quantitative evaluation of local Young's modulus in resonance ultrasound microscopy", Appl. Phys. Lett. 87, 204107 (2005).
  42. H. Ogi, N. Nakamura, H. Tanei, R. Ikeda, M. Hirao, and Mikio Takemoto, "Off-diagonal elastic constant and sp2-bonded graphitic grain boundary in nanocrystalline-diamond thin films", Appl. Phys. Lett., 86, 231904 (2005).
  43. N. Nakamura, H. Ogi, T. Ono, and M. Hirao, "Elastic constants and magnetic anisotropy of Co/Pt superlattice thin films", Appl. Phys. Lett., 86,111918 (2005).
  44. H. Ogi, T. Tada, J. Tian, and M. Hirao, "Resonant Ultrasound Microscopy with an Isolated Langasite Oscillator for Quantitative Evaluation of Local Elastic Constant", Jpn. J. Appl. Phys. 44, 4381-4384 (2005).
  45. N. Nakamura, H. Ogi, T. Ono, M. Hirao, and M. Nishiyama, "Elastic Constants and Magnetic Anisotropy of Co/Pt Superlattice: Resonance Ultrasound Spectroscopy Method&quot", Jpn. J. Appl. Phys. 44, 4427-4430 (2005).
  46. H. Ogi, N. Nakamura, and M. Hirao, "Advanced resonant-ultrasound spectroscopy for measuring anisotropic elastic constants of thin films", Fatigue Fract. Eng. Mat. Struc. 28, 657-663 (2005).
  47. N. Nakamura, H. Ogi, T. Ono, and M. Hirao, "Determination of anisotropic elastic constants of superlattice thin films by resonant-ultrasound spectroscopy" J. Appl. Phys., 97, 013532 (2005).
  48. J. Tian, H. Ogi, and M. Hirao, "Dynamic-contact stiffness at the interface between a vibrating rigid sphere and a semi-infinite viscoelastic solid", IEEEé°é°Trans. Ultrason. Freq. Contr., 51,pp.1557-1563 (2004).
  49. J. Tian, H. Ogi, T. Tada, M. Hirao, and H. Ledbetter, "Local surface elastic constants by resonant-ultrasound microscopy", J. Appl. Phys., 96, pp. 133-137 (2004).
  50. J. Tian, H. Ogi, and M. Hirao "Vibration analysis of an elastic-sphere oscillator contacting semi-infinite viscoelastic solids in resonant ultrasound microscopy" J. Appl. Phys., 95, pp. 8366-8375 (2004).
  51. N. Nakamura, H. Ogi, and M. Hirao, "Resonance ultrasound spectroscopy for measuring elastic constants of thin films", Jpn. J. Appl. Phys., 43, pp. 3115-3118 (2004).
  52. N. Nakamura, H. Ogi, and M. Hirao, "Elastic constants of chemical-vapor-deposition diamond thin films: Resonance ultrasound spectroscopy with laser-Doppler interferometry", Acta Materialia., 52, 765-771 (2004).
  53. J. Tian, H, Ogi, T. Tada and M. Hirao, "Vibration Analysis on Electromagnetic-Resonance-Ultrasound Microscopy (ERUM) for Determining Localized Elastic Constants of Solids", J. Acoust. Soc. Am., 115, 630-636 (2004).
  54. N. Nakamura, H. Ogi, and M. Hirao, "Resonance ultrasound spectroscopy with laser-Doppler interferometry for studying elastic properties of thin films", Ultrasonics, 42, 491-494 (2004).
  55. J. Tian, H. Ogi, T. Tada, and M. Hirao, "Young's modulus mapping on SCS-6 SiCf 'Ti-6Al-4V composite by electromagnetic-resonance-ultrasound microscopy", J. Appl. Phys., 94, 6472-6476 (2003).
  56. N. Nakamura, H. Ogi, T. Ichitsubo, M. Hirao, N. Tatsumi, T. Imai, and H. Nakahata, "Elastic anisotropy and incohesive bond of chemical-vapor-deposition diamond film: Acoustic resonance measurements and micromechanics modeling", J. Appl. Phys., 94, .6405-6410 (2003).
  57. H. Ogi, J. Tian, T. Tada, and M. Hirao, "Elastic-stiffness mapping by resonance-ultrasound microscopy with isolated piezoelectric oscillator", Appl. Phys. Lett., 83, 464-466 (2003).
  58. H. Ogi, G. Shimoike, K. Takashima, and M. Hirao: "Measurement of elastic-stiffness tensor of an anisotropic thin film by electromagnetic acoustic resonance", Ultrasonics, 40, 333-336, (2002).
  59. H. Ogi, G. Shimoike, M. hirao, K. Takashima, and Y. Higo: "Anisotropic elastic-stiffness coefficients of an amorphous Ni-P film", J. Appl. Phys. 91, 4857-4862 (2002).


Sonoluminescence and ultrasonic degradation


  1. H. Ogi, Y. Tomiyama, Y. Shoji, T. Mizugaki, and M. Hirao, "Effects of Dissolved and Ambient Gases on Sonochemical Degradation of Methylene Blue in High-Amplitude Resonant Mode", Jpn. J. Appl. Phys., 45, 4678-4683 (2006).
  2. H. Ogi, A. Matsuda, K. Wada, and M. Hirao: "Brightened single bubble sonoluminescence by phase-adjusted high-frequency acoustic pulse", Phys. Rev. E, 67, 056301 (2003).
  3. H. Ogi, M. Hirao, and M. Shimoyama: "Activation of TiO2 photocatalyst by single-bubble sonoluminescence for water treatment", Ultrasonics, 40, 649-650, (2002).


Formation and structure analysis of nano-scale crystals


  1. R.Tarumi, K.Takashima and Y.Higo, Crystallographic features of oriented nanocrystals induced by focused-ion-beam irradiation for an amorphous alloy, J. Appl. Phys. (in press).
  2. T.Kamikawa, R.Tarumi, K.Takashima and Y.Higo, Orientation control of nanocrystals in an amorphous alloy by ion beam irradiation, Transactions of Materials Research Society Japan, (submitted).
  3. R.Tarumi, T.Kamikawa, K.Takashima and Y.Higo, Formation of orientated nano-sized crystals in an amorphous alloy under focused ion beam irradiaion, Transactions of Materials Research Society Japan, (in press).
  4. T.Kamikawa, R.Tarumi, K.Takashima and Y.Higo, Formation of 3-dimensionally orientated nano-sized crystals in an amorphous alloy under ion beam irradiation, MRS Symp. Proc., (in press).
  5. R.Tarumi, K.Takashima and Y.Higo, Formation of oriented nanocrystals in an amorphous alloy by focused-ion-beam irradiation, Appl. Phys. Lett., 81, 24, (2002), pp.4610-4612.
  6. K.Takashima, R.Tarumi and Y. Higo, Fracture behavior of micro-sized specimens prepared from an amorphous alloy thin film at ambient and elevated temperatures, MRS Symp. Proc., 695, (2002), pp.L8.4, 355-360.
  7. A.Ogura, R.Tarumi, M.Shimojo, K.Takashima and Y.Higo, Control of nanocrystalline orientation using the application of a stress field in an amorphous alloy, Appl. Phys. Lett., 79, 7, (2001), pp.1042-1044.
  8. A.Ogura, M.Sato, R.Tarumi, M.Shimojo, K.Takashima, Y.Higo, Formation of Nano-Sized Crystals During Plastic Deformation in Amorphous Alloys, MRS Symp. Proc., 634, (2001), pp.B1.10.1-10.6.
  9. R.Tarumi, A.Ogura, M.Shimojo, K.Takashima, Y.Higo: Molecular Dynamics Simulation of Nano-Sized Crystallization During Plastic Deformation in an Amorphous Metal, MRS Symp. Proc., 634, (2001), pp.B1.9.1-9.6.
  10. R.Tarumi, A.Ogura, M.Shimojo, K.Takashima and Y.Higo: Molecular Dynamics Simulation of Crystallization in an Amorphous Metal During Shear Deformation, Jpn. J. Appl. Phys., 39, 6, (2000), pp.L611-613.


Development of new electromagnetic acoustic transducers (EMATs) and non-destructive evaluation


  1. Nurmalia, N. Nakamura, H. Ogi, and M. Hirao "EMAT pipe inspection technique using higher mode torsional guided wave T(0,2)", NDT & E Int. 87, 78-84 (2017).
  2. N. Nakamura, K. Ashida, T. Takishita, H. Ogi, and M. Hirao, "Inspection of stress corrosion cracking in welded stainless steel pipe using point-focusing electromagnetic-acoustic transducer", NDT & E Int. 83, 88-93 (2016).
  3. N. Nakamura, H. Ogi, and M. Hirao, "Review on acoustic transducers for resonant ultrasound spectroscopy", JOM 67, 1849-1855 (2015).
  4. T. Takishita, K. Ashida, N. Nakamura, H. Ogi, and M. Hirao, "Development of shear-vertical wave point-focusing electromagnetic acoustic transducer (PF-EMAT)", Jpn. J. Appl. Phys. (2015) in press.
  5. R. Ribichini, P.B. Nagy, and H. Ogi, "The impact of magnetostriction on the transduction of normal bias field EMATs", NDT& E Int. in press (2012).
  6. Nurmalia, N. Nakamura, H. Ogi, M. Hirao, and K. Nakahata, "Mode conversion behavior of SH guided wave in a tapered plate", NDT& E Int. 45, 156-161 (2012).
  7. Nurmalia, N. Nakamura, H. Ogi, and M. Hirao, "Detection of SH Guided Waves Propagating in Aluminum Plate with Thinning Region",Jpn. J. Appl. Phys. 50, 07HC17 (2011).
  8. H. Ogi, K. Wada, and M. Hirao, "Energy Trap for Axial-Shear-Wave Resonance in a Stepped Cylindrical Rod: Theory and Measurement"", Jpn. J. Appl. Phys, 43, pp. 3024-3026 (2004).
  9. M. Hirao, H. Ogi, and K. Sato, "Interface Delamination of Layered Media: Acoustic Spectroscopy and Modal Analysis", IEEEé°é°Trans. Ultrason. Freq. Contr., 51, pp. 439-443 (2004).
  10. H. Ogi, E. Goda, and M. Hirao: "Increase of Efficiency of Magnetostriction SH-Wave EMAT by Angled Bias Field: Piezomagnetic Theory and Measurement", Jpn. J. Appl. Phys., 42, 3020-3024 (2003).
  11. G. A. Alers and H. Ogi: EMAT Techniques in Handbook of Elastic Properties of Solids, Liquids, and Gases, Vol.1, Ed. by A. G. Every and W. Sachse, Academic Press, pp. 263-281 (2000).
  12. Masahiko Hirao and Hirotsugu Ogi: An SH-Wave EMAT technique for gas pipelineinspection, NDT & E' International, 32, 127-132 (1999).
  13. Hirotsugu Ogi, Masahiko Hirao, Toshihiro Ohtani: Line-Focusing Electromagnetic Acoustic Transducers for Detection of Slit Defects, IEEE Trans. on Ultrason., Ferroele. Freq. Cont., 46, pp. 341-346 (1999).
  14. Hirotsugu Ogi, Masahiko Hirao, and Toshihiro Ohtani: Line-focusing of ultrasonic SV wave by electromagnetic acoustic transducer, J. Acoust. Soc. Am., 103, 2411-2415 (1998).
  15. T.Yamasaki, S.Tamai, and M.Hirao: Flaw Detection in Steel Wires by Electromagnetic Acoustic Transducer, R.E.Green, Jr.: Nondestructive Characterization of MaterialsVIII, 733-738 (Plenum Press, 1998).


Fatigue, creep and prediction of remaining life


  1. C.M. Sayers, M. Hirao, and T. Morishita, "Grain boundary compliance and ultrasonic velocities in pure copper undergoing intergranular creep", Int. J. Solids. Struct. 96, 400-408, (2016).
  2. T. Ohtani, N. Nishiyama, S. Yoshikawa, H. Ogi and M. Hirao, "Ultrasonic Attenuation and Microstructural Evolution throughout Tension-Compression Fatigue of a Low Carbon Steel", Materials Science and Engineering A, 442, 466-470 (2006).
  3. T. Ohtani, H. Ogi and M. Hirao, "Electromagnetic Acoustic Resonance to Assess Creep Damage in Cr-Mo-V steel", Japanese Journal of Applied Physics, Vol.45, No.5B, 4526-4533 (2006).
  4. T. Ohtani, H. Ogi and M. Hirao, "Evolution of Microstructure and Acoustic Damping during Creep of a Cr-Mo-V Ferritic Steel", Acta Materialia, 54, 2705-2713 (2006).
  5. T. Ohtani, H. Ogi and M. Hirao, "Creep-induced Microstructural Change in 304-type Austenitic Stainless Steel", Trans. ASME J. Eng. Mater. Tech., 128 (2): 234-242 (2006).
  6. T. Ohtani, H. Ogi, and M. Hirao, "Acoustic damping characterization and microstructure evolution in nickel-based superalloy during creep", Int. J. Sol. and Struc., 42, 2911-2928 (2005).
  7. T. Ohtani, H. Ogi, and M. Hirao, "Dislocation damping and microstructure evolutions during creep of 2.25Cr-1Mo steels", Metal. Mater. Trans. A, 36A 411-420 (2005).
  8. H. Ogi, Y. Minami, and M. Hirao: " Acoustic study of dislocation rearrangement at later stages of fatigue: Noncontact prediction of remaining life", J. Appl. Phys., 91, 1849-1854 (2002).
  9. H. Ogi, S. Aoki, and M. Hirao: " Noncontact monitoring of surface-wave nonlinearity for predicting remaining life of fatigued steels ", J. Appl. Phys., 90, 438-442 (2001).
  10. H. Ogi, T. Hamaguchi, and M. Hirao: "In-situ Monitoring of Ultrasonic AttenuationDuring Rotating Bending Fatigue of Carbon Steel with Electromagnetic AcousticResonance", J. Alloys and Compounds, 310, 436-439 (2000).
  11. T. Ohtani, H. Ogi, and M. Hirao: Ultrasonic Attenuation Monitoringof FatigueDamage in Low Carbon Steels with Electromagnetic Acoustic Resonance (EMAR), J. Alloys and Compounds, 310, 440-444 (2000).
  12. H.Ogi, M. Hirao, and T. Hamaguchi: Ultrasonic Attenuation Peak in Steel and Aluminum Alloy During Rotating Bending Fatigue, Metal. and Mater.Trans. A, 31A, 1121-1128 (2000).
  13. M. Hirao, H. Ogi, N. Suzuki, and T. Ohtani: Ultrasonic Attenuation Peak During Fatigue of Polycrystalline Copper, Acta Materialia, 48,pp.517-524 (2000).
  14. T. Ohtani, H. Ogi, and M. Hirao: Advanced EMAT-Resoant Technique for Assessment of Damage Accumulation and Remainning Life of Crept Stainless Steel, Reviewof Progress in QNDE, Vol.18, eds. D.O.Thompson and D.E.Chimenti (Acadimic/Plenum, New York, 1999), pp.1847-1854.
  15. M. Hirao, H. Ogi, T. Ohtani, and T. Morishita: Electromagnetic Acoustic Resonance to Assess Creep Damage in 2.25Cr-1Mo Steel, Nondestructive Characterization of Materials in Aging Systems (Materials ResearchSociety, Vol. 503),edited by R.L.Crane et al., 1998, pp.31-36.
  16. T.Ohtani, H.Ogi, T.Morishita, and M. Hirao: Noncontact Ultrasonic Spectroscopy for Detecting Creep Damage in 2.25Cr-1Mo Steel, R.E.Green, Jr.: Nondestructive Characterization of Materials VIII, 139-144 (Plenum Press, 1998).


Stress measurements


  1. M. Hirao, H. Ogi and H. Yasui: "Ultrasonic Measurement of Bolt-Axial Stress by a Shear-Wave EMAT", NDT & E' International, 34, 179-183 (2001).
  2. Hirotsugu Ogi and Masahiko Hirao: Electromagnetic Acoustic Spectroscopy in the Bolt Head for Evaluating the Axial Stress, R.E.Green, Jr.: Nondestructive Characterization of Materials VIII, 671-676 (Plenum Press, 1998).


Books and descriptions


  1. M. Hirao and H. Ogi, EMATs for Science and Industry, (Kluwer-Academic, Boston, 2003).
  2. G. Alers and H. Ogi: "EMAT Techniques", in Handbook of Elastic Properties of Solids, Liquids, and Gases, Vol. I, edited by M. Levy, H. Bass, R. Stern, and V. Keppens, Academic Press, New York, pp. 263-281, 2001.
  3. M.Hirao, H.Ogi, and H.Fukuoka: "Resonance EMAT System for Acoustoelastic Stress Evaluation in Sheet Metals", Rev. Sci. Instrum., 64, pp. 3198-3205 (1993).
  4. M.Hirao, H.Ogi, and H.Fukuoka: "Advanced Ultrasonic Method for Measuring Rail Axial Stresses with Electromagnetic Acoustic Transducer", Res. Nondestr. Eval., 5, pp. 211-223 (1994).
  5. H.Ogi, M.Hirao, and T.Honda: "Ultrasonic Attenuation and Grain Size EvaluationUsing Electromagnetic Acoustic Resonance", J. Acoust. Soc. Am., 98, pp.458-464 (1995).
  6. M. Hirao, H. Fukuoka, and Y. Miura: "Scattering of Rayleigh Surface Wavesby Edge Cracks: Numerical Simulation and Experiment", J. Acoust. Soc. Am., 72, pp.602-606 (1982).
  7. M. Hirao, K. Aoki, and H. Fukuoka: "Texture of Polycrystalline MetalsCharactertizedby Ultrasonic Velocity Measurements", J. Acoust. Soc. Am., 81, pp.1434-1440 (1987).
  8. M. Hirao, H. Fukuoka, K. Fujisawa, and R. Murayama: Characterization of Formability in Cold-Rolled Steel Sheets Using Electromagnetic AcousticTransducers, Metall. Trans., 20A, pp.2385-2392 (1989).
  9. M. Hirao, K. Tojo and H. Fukuoka: Small Fatigue Crack Behavior in 7075-T651 Aluminum as Monitored with Rayleigh Wave Reflection, Metall. Trans., 24A, pp.1773-1783 (1993).
  10. M. Hirao, K. Yokota, and H. Fukuoka: "Interference Measurement of Ultrasonic Velocities with Line-Focusing P(VDF-TrFE) Transducer: V(f) Curves", Rev. Prog. in Quant. NDE, D. O. Thompson and D. E. Chimenti, eds., Plenum Press, Vol.14, 1995, pp.931-936.