Recent Publications (Hirotsugu Ogi)

#2021

  1. Kichitaro Nakajima, Hajime Toda, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Yuji Goto, Yuji and Hirotsugu Ogi, "Half-time heat map reveals ultrasonic effects on morphology and kinetics of amyloidogenic aggregation reaction", ACS Chem. Neurosci. in press (2021).
  2. Hsu-Kai Weng, Akira Nagakubo, Hideyuki Watanabe, and Hirotsugu Ogi, "Phonon propagation in isotopic diamond superlattices", Phys. Rev. B 104, 054112 (2021).
  3. Kentaro Noi, Kensuke Ikenaka, Hideki Mochizuki, Yuji Goto, and Hirotsugu Ogi, "Disaggregation behavior of amyloid β fibrils by anthocyanins studied by total-internal-reflection-fluorescence microscopy coupled with wireless quartz-crystal microbalance biosensor", Anal. Chem. 93, 11176-11183 (2021).
  4. N. Nakamura, K. Kashiuchi, and H. Ogi, "Multi-mode resistive spectroscopy for precisely controlling morphology of extremely narrow gap palladium nanocluster array", Rev. Sci. Instrum. 92, 063901 (2021).
  5. Nobutomo Nakamura, Yuto Sakamoto, and Hirotsugu Ogi, "Spontaneous nucleation on flat surface by depletion force in colloidal suspension", Sci. Rep. 11, 8929 (2021).
  6. Hiroki Fukuda, Akira Nagakubo, and Hirotsugu Ogi, "Elastic constant of dielectric nano-thin films using three-layer resonance studied by picosecond ultrasonics", Jpn. J. Appl. Phys. 60, SDDA05(2021).
  7. Kichitaro Nakajima, Kentaro Noi, Keiichi Yamaguchi, Masatomo So, Kensuke Ikenaka, Hideki Mochizuki, Hirotsugu Ogi, and Yuji Goto, "Optimized sonoreactor for accelerative amyloid-fibril assays through enhancement of primary nucleation and fragmentation", Ultrasonics Sonochemistry 73, 105508 (2021).
  8. Lianjie Zhou, Fumihito Kato, and Hirotsugu OGI, "Sensitive label-free IgG detection using MEMS QCM biosensor with 125-MHz wireless quartz resonator", Jpn. J. Appl. Phys. 60, SDDB03 (2021).
  9. Lianjie Zhou, Fumihito Kato, Nobutomo Nakamura, Yasushi Oshikane, Akira Nagakubo, and Hirotsugu Ogi, "MEMS hydrogen gas sensor with wireless quartz crystal resonator", Sens. Actuat. B. 334, 129651 (2021).
  10. Fumihito Kato, Yu Sato, Hiroki Ato, Haruki Kuwabara, Yuto Kobayashi, Kensuke Nakamura, Noriyasu Masumoto, Hiroyuki Noguchi, and Hirotsugu Ogi, "Study on micropillar arrangement optimization of wireless-electrodeless quartz crystal microbalance sensor and application to gas sensor", Jpn. J. Appl. Phys. in press (2021).

#2020

  1. K. Nakajima, T. Yamazaki, Y. Kimura, M. So, Y. Goto, and H. Ogi, "Time-Resolved Observation of Evolution of Amyloid-β Oligomer with Temporary Salt Crystals", J. Phys. Chem. Lett. 11, 6176-6184 (2020).
  2. K. Kusakabe, A. Wake, A. Nagakubo, K. Murashima, M. Murakami, K. Adachi, and H. Ogi, "Interplanar stiffness in defect-free monocrystalline graphite", Phys. Rev. Mater. 4, 043603 (2020).
  3. H. K. Weng, N. Nagakubo, H. Watanabe, and H. Ogi, "Thermal conduction in isotope diamond thin films studied by pump-probe laser reflectivity measurement", Jpn. J. Appl. Phys. 59, SKKA04 (2020).
  4. N. Nakamura, A. Maehara, and and H. Ogi, "Development of confocal picosecond ultrasonics for visualizing propagation of acoustic wave", Jpn. J. Appl. Phys. in press (2020).
  5. L. Zhou, N. Nakamura, A. Nagakubo, and and H. Ogi, "Enhancement of sensitivity of Pd-based hydrogen-gas sensor by plasma exposure studied by wireless quartz resonator", Jpn. J. Appl. Phys. 59 SKKB02 (2020).
  6. K. Noi, M. Iijima, S. Kuroda, F. Kato, and H. Ogi, "Mechanism of affinity enhanced protein adsorption on bio-nanocapsules studied by viscoelasticity measurement with wireless QCM biosensor", Jpn. J. Appl. Phys. 59, SKKB03 (2020).
  7. A. Nagakubo, H. T. Lee, H. Ogi, T. Moriyama, and T. Ono, "Elastic constants of beta tungsten thin films studied by picosecond ultrasonics and density functional theory", Appl. Phys. Lett. 116, 021901 (2020).
  8. A. Nagakubo, K. Adachi, T. Nishihara, and H. Ogi, "GHz-range resonant ultrasound spectroscopy for a free-standing nano film studied by picosecond ultrasonics", Appl. Phys. Express 13, 016504 (2020).

#2019

  1. N. Nakamura, T. Ueno, and H. Ogi, "Hydrogen-gas sensing at low concentrations using extremely narrow gap palladium nanoclusters prepared by resistive spectroscopy", J. Appl. Phys. 126, 225104 (2019).
  2. L. Zhou, N. Nakamura, A. Nagakubo, and H. Ogi, "Highly sensitive hydrogen detection using curvature change of wireless-electrodeless quartz resonators", Appl. Phys. Lett. 115, 171901 (2019).
  3. N. Nakamura, S. Nakashima, and H. Ogi, "Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass", Sci. Rep. 9, 12836 (2019).
  4. K. Noi, A. Iwata, F. Kato, and H. Ogi, "Ultrahigh-Frequency Wireless MEMS QCM Biosensor for Direct Label-Free Detection of Biomarkers in a Large Amount of Contaminants", Anal. Chem. 91(15), 9398-9402 (2019).
  5. A. Nagakubo, S. Tsuboi, Y. Kabe, S. Matsuda, A. Koreeda, Y. Fujii, and H. Ogi, "Zero temperature coefficient of sound velocity in vitreous silicon oxynitride thin films", Appl. Phys. Lett. 114, 251905 (2019).
  6. N. Nakamura, R. Yokomura, N. Takeuchi, D. Yamakado, and H. Ogi, "Elastic stiffness of metallic multilayers studied by picosecond ultrasonics: improved interpretation of interface elasticity", Jpn. J. Appl. Phys. 58, 075504, 2019 (2019).
  7. K. Noi, M. Iijima, S. Kuroda, and H. Ogi,, "Ultrahigh-Sensitive Wireless QCM with Bio-nanocapsules", Sens. Actuat. B: Chemical 293, 59-62 (2019).
  8. N. Nakamura, T. Ueno, and H. Ogi, "Precise control of hydrogen response of semicontinuous palladium film using piezoelectric resonance method", Appl. Phys. Lett. 114, 201901 (2019).<-- selected as a Featured Article!
  9. K. Kakuda, K. Ikenaka, K. Araki, M. So, C. Aguirre, Y. Kajiyama, K. Konaka, K. Noi, K. Baba, H. Tsuda, S. Nagano, T. Ohmichi, Y. Nagai, T. Tokuda, O. M.A. El-Agnaf, H. Ogi, Y. Goto, and H. Mochizuki, "Ultrasonication-based rapid amplification of α-synuclein aggregates in cerebrospinal fluid", Sci. Rep. 9, 6001 (2019).
  10. H. Ogi, S. Iwagami, A. Nagakubo, T. Taniguchi, and T. Ono, "Nano-Plate Biosensor Array Using Ultrafast Heat Transport through Proteins", Sens. Actuat. B: Chemical 278, 15-20 (2019).


#2018

  1. K. Adachi, H. Ogi, N. Takeuchi, N. Nakamura, H. Watanabe, T. Ito, and Y. Ozaki, "Unusual elasticity of monoclinic β-Ga2O3", J. Appl. Phys. 124, 085102 (2018). <-- selected as a Featured Article!
  2. H. Ishida and H. Ogi, "Perturbation theories behind thermal mode spectroscopy for high-accuracy measurement of thermal diffusivity of solids", Phil. Mag. 98(23), 2164-2187 (2018).
  3. F. Kato, H. Noguchi, Y. Kodaka, N. Oshida, and H. Ogi, "Wireless poly(dimethylsiloxane) quartz-crystal-microbalance biosensor chip fabricated by nanoimprint lithography for micropump integration aiming at application in lab-on-a-chip", Jpn. J. Appl. Phys. 57, 07LD14 (2018).
  4. F. Kato, H. Noguchi, Y. Kodaka, N. Oshida, and H. Ogi, "Wireless poly(dimethylsiloxane) quartz-crystal-microbalance biosensor chip fabricated by nanoimprint lithography for micropump integration aiming at application in lab-on-a-chip", Jpn. J. Appl. Phys. in press (2018)
  5. S. Tsuboi, K. Adachi, A. Nagakubo, and H. Ogi, "Theoretical study on elastic properties of Si2N2O by ab-initio calculation", Jpn. J. Appl. Phys., 57, 07LB04 (2018)


#2017


  1. A. Nitani, H. Muta, M. Adachi, M. So, K. Sasahara, K. Sakurai, E. Chatani, K. Naoe, H. Ogi, D. Hall, and Y. Goto, "Heparin-dependent aggregation of hen egg white lysozyme reveals two distinct mechanisms of amyloid fibrillation", J. Biol. Chem. in press (2017).
  2. E. Oishi, Y. Fujii, D. Katayama, A. Koreeda, A. Nagakubo, and H. Ogi "Phonon anharmonicity in zirconium tungstate single crystal investigated by broadband light scattering", Jpn. J. Appl. Phys. 56, 10PB06 (2017)
  3. 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).
  4. 芦田一弘、滝下峰史、坪井誠也、中村暢伴、荻博次、平尾雅彦 ”点焦点型電磁超音波センサによる探傷とスリット近傍の局所振動”、非破壊検査、66, 437-442 (2017).
  5. N. Nakamura, K. Inayama, T. Okuno, H. Ogi, and M. Hirao "Accelerated crystallization of colloidal glass by mechanical oscillation", Sci. Rep. 7, 1396 (2017).
  6. 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 11, 191-196 (2017).
  7. K. Nakajima, M. So, K. Takahashi,Y. Tagawa, M. H, Y. Goto, and H. Ogi "Optimized Ultrasonic Irradiation Finds Out Ultra-stable Aβ1－40 Oligomer", J. Phys. Chem. B 121(12), pp. 2603-2613 (2017).
  8. 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).
  9. 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).

#2016


  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. N. Nakamura, K. Ashida, T. Takashi, H. Ogi, and M. Hirao, "Inspection of stress corrosion cracking in welded stainless steel pipe using point-focusing electromagnetic-acoustic transducer", NDT E Int. accepted.
  5. A. Nagakubo, M. Arita, H. Ogi, H. Sumiya, N. Nakamura, and M. Hirao, "Elastic constant C11 of 12C diamond between 10 and 613 K", Appl. Phys. Lett. 108, 221902 (2016).
  6. K. Nakajima, H. Ogi, K. Adachi, K. Noi, M. Hirao, H. Yagi, and Y. Goto: "Nucleus factory on cavitation bubble for amyloid β fibril", Sci. Rep. 6, 22015 (2016).
  7. 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).

#2015


  1. A. Nagakubo, H. Ogi, and M. Hirao "Refractive index and extinction coefficient of Si at 400 nm between 10 and 300 K", Jpn. J. Appl. Phys. in press (2015).
  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. (2015) in press.
  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. 118, 014307 (2015).
  4. 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).
  5. N. Nakamura, H. Ogi, and M. Hirao, "A review on acoustic transducers for resonant ultrasound spectroscopy", JOM (2015) in press.
  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 α- and β-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 Aβ1－40 peptides on liquid-solid surface studied by total-internal-reflection fluorescence microscopy coupled with quartz-crystal microbalance biosensor", Jpn. J. Appl. Phys. 54, 07HE01 (2015).
  9. 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).
  10. 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.
  11. A. Nagakubo, M. Mari, 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.


#2014


  1. H. Ogi, M. Fukukshima, H. Hamada, K. Noi, M. Hirao, H. Yagi, and Y. Goto "Ultrafast propagation of β-amyloid fibrils in oligomeric cloud", Sci. Rep. 4, 6960 (2014).
  2. A. Nagakubo, H. Ogi, H. Sumiya, and M. Hirao "Elasticity and hardness of nano-polycrystalline boron nitrides: The apparent Hall-Petch effect", Appl. Phys. Lett. 105, 081906 (2014).
  3. A. Maehara, N. Nakamura, H. Ogi, and M. Hirao "Elimination of Bandwidth Effect in Attenuation Measurement with Picosecond Ultrasonics", Jpn. J. Appl. Phys. 53, 086602 (2014).
  4. H. Ogi, Y. Sakamoto, and M. Hirao "Calibration-free portable Young's-modulus tester with isolated langasite oscillator", Ultrasonics 54, 1963-1966 (2014).
  5. 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).


-2013-

  1. H. Ogi, "Wireless-electrodeless quartz-crystal-microbalance biosensors for studying interactions among biomolecules: A review", Proc. Jpn. Acad. Ser. B, (2013) in press.
  2. R. Tarumi, H. Ledbetter, H. Ogi and M. Hirao, "Low-temperature elastic constants of monocrystal corundum (alpha-Al2O3)", Phil. Mag., (2013) in press.
  3. N. Nakamura, N. Yoshimura, H. Og, and M. Hirao, "Elastic constants of polycrystalline L10 FePt at high temperatures", J. Appl. Phys. 114, 093506 (2013).
  4. M. Tane, Y. Okuda, Y. Todaka, H. Ogi, and A. Nagakubo, "Elastic properties of a single-crystalline ω phase in titanium", Acta Mater., (2013) in press.
  5. 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).
  6. A. Nagakubo, H. Ogi, H. Sumiya, K. Kusakabe, and M. Hirao, "Elastic constants of cubic and wurtzite boron nitrides", Appl. Phys. Lett., 102, 241909 (2013).
  7. Nurmalia, N. Nakamura, H. Ogi, and M. Hirao, "Mode Conversion and Total Reflection of Torsional Waves for Pipe Inspection", Jpn. J. Appl. Phys., 52, 07HC14 (2013).
  8. 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., 07HD11 (2013).
  9. N. Nakamura, Y. Nakamichi, H. Ogi, M. Hirao, and M. Nishiyama, "Elastic stiffness of Co thin film at high temperatures monitored by picosecond ultrasound", Jpn. J. Appl. Phys., 52, 07HB05 (2013).
  10. K. Uesugi, H. Ogi, M. Fukushima, M. So, H. Yagi, Y. Goto, and M. Hirao, "Mechanisms of Ultrasonically Induced Fibrillation of Amyloid β1－40 Peptides", Jpn. J. Appl. Phys. 52, 07HE10 (2013).
  11. 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).


-2012-

  1. 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).
  2. R. Ribichini, P.B. Nagy, and H. Ogi, "The impact of magnetostriction on the transduction of normal bias field EMATs", NDT& E Int. 51, 8-15 (2012).
  3. 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).
  4. 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.
  5. 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).
  6. 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).
  7. N. Nakamura, H. Ogi, and M. Hirao, "Elastic, anelastic and piezoelectric coefficients of GaN", J. Appl. Phys. 111, 013509 (2012).
  8. 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).


-2011-

  1. Nurmalia, N. Nakamura, H. Ogi, M. Hirao, and K. Nakahata, "Mode conversion behavior of SH guided wave in a tapered plate", NDT& E Int. (2011) in press.
  2. 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).
  3. 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).
  4. 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).
  5. 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).
  6. 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.59, 4631-4640 (2011).
  7. 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).
  8. 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).
  9. 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.
  10. 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).


-2010-

  1. 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).
  2. 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).
  3. 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).
  4. N. Nakamura, Y. Kake, H. Ogi, and M. Hirao "Strong strain-dependent elastic stiffness in ultrathin Pt films on MgO", J. Appl. Phys. in press (2010).
  5. 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).
  6. 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).
  7. 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).
  8. 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).
  9. 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).
  10. 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).
  11. 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).


-2009-

  1. 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).
  2. 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).
  3. H. Ohtani, H. Ogi and M. Hirao, "Noncontact Evaluation of Surface-Wave Nonlinearity for Creep Damage in Cr–Mo–V Steel", Jpn. J. Appl. Phys. 48 (2009) 07GD02.
  4. 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. 95, 011902 (2009).
  5. 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).
  6. 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).
  7. 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. 48 (2009) 07GA02.
  8. 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. 48 (2009) 07GA01.
  9. 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.
  10. 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).

-2008-

  1. 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", J. Sol. Mech. Mater. Eng. 2, 1420-1426 (2008).
  2. 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).(Selected for Virtual Journal of Ultrafast Science)
  3. N. Nakamura, H. Ogi, and M. Hirao, "Stable Elasticity of Epitaxial Cu Thin Films on Si", Phys. Rev. B 77, 245416 (2008).
  4. 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).
  5. R. Tarumi, Y. Kawasaki, H. Ogi, M. Hirao, and T. Kagayama, “Pressure-Dependent Shear Modulus of Polycrystalline Al Studied by Electromagnetic Acoustic Resonance”, Jpn. J. Appl. Phys. 47, 1763-1766 ( 2008).
  6. 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).
  7. 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).
  8. 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).
  9. 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, 3847-3850 ( 2008).
  10. H. Ogi, T. Omori, K. Hatanaka, M. Hirao, and M. Nishiyama, "Detection of Glypican-3 Proteins for Hepatocellular Carcinoma Marker Using Wireless-Electrodeless Quartz Crystal Microbalance", Jpn. J. Appl. Phys. 47, 4021-4023 ( 2008).
  11. 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. 47, 3851-3854 ( 2008).
  12. H. Tanei, N. Nakamura, H. Ogi, M. Hirao, R. Ikeda, "Unusual elastic behavior of nanocrystalline diamond thin films", Phys. Rev. Lett. 100, 016804 (2008).

-2007-

  1. R. Tarumi, K. Nakamura, H. Ogi, and M. Hirao, ”Complete set of elastic and piezoelectric coefficients of alpha-quartz at low temperatures”, J. Appl. Phys. in press (2007).
  2. N. Nakamura, H. Ogi, T. Yasui, M. Fujii, and M. Hirao, "Mechanism of Elastic Softening Behavior in Superlattice", Phys. Rev. Lett. 99, 035502 (2007).
  3. 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).
  4. 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).(Selected for Virtual Journal of Ultrafast Science)
  5. 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).
  6. 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).
  7. 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).
  8. 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).
  9. 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).

-2006-

  1. 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", Mater. Sci. Eng. A, 442, 466-470 (2006).
  2. T. Ohtani, H. Ogi and M. Hirao, "Electromagnetic Acoustic Resonance to Assess Creep Damage in Cr-Mo-V steel", Jpn. J. Appl. Phys., 45, 4526-4533 (2006).
  3. 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).
  4. 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).
  5. 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).
  6. 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).
  7. 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) .
  8. H. Ogi, H. Niho, and M. Hirao, "Internal-friction mapping on solids by resonance ultrasound microscopy", Appl. Phys. Lett. 88, 141110 (2006).
  9. 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).
  10. 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).
  11. 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).
  12. 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).
  13. 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).
  14. 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).
  15. 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).

-2005-

  1. 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).
  2. 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).
  3. 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).
  4. 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).
  5. 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).
  6. 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).
  7. 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).
  8. 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).
  9. 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).
  10. 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).
  11. 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).

-2004-

  1. 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, 3024-3026 (2004).
  2. M. Hirao, H. Ogi, and K. Sato, "Interface Delamination of Layered Media: Acoustic Spectroscopy and Modal Analysis", IEEE　Trans. Ultrason. Freq. Contr. 51, 439-443 (2004).
  3. 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, 6201-6206 (2004).
  4. H. Ledbetter, H. Ogi, S. Kai, S. Kim, and M. Hirao, "Elastic constants of titanium's b.c.c. monocrystals", J. Appl. Phys. 95, 4642-4644 (2004).
  5. 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.).
  6. 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).
  7. 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).
  8. J. Tian, H. Ogi, and M. Hirao, "Dynamic-contact stiffness at the interface between a vibrating rigid sphere and a semi-infinite viscoelastic solid", IEEE　Trans. Ultrason. Freq. Contr. 51, 1557-1563 (2004).
  9. J. Tian, H. Ogi, T. Tada, M. Hirao, and H. Ledbetter, "Local surface elastic constants by resonant-ultrasound microscopy", J. Appl. Phys. 96, 133-137 (2004).
  10. 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).
  11. 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).
  12. 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).
  13. 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).
  14. 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).
  15. H. Ledbetter, H. Ogi, and N. Nakamura: "Elastic, anelastic, piezoelectric coefficients of monocrystal lithium niobate", Mech. Mater. 36, 941-947 (2004).

-2003-

  1. 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).
  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. 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).
  4. T. Ichitsubo, T. Seto, H. Ogi, M. Hirao, and H. Inui: "Elastic constants predicted from sintered porous MgB2 via micromechanics modeling", Mater. Lett. 57, 3910-3913 (2003).
  5. 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", IEEE　Trans. Ultrason. Freq. Contr. 50, 553-560 (2003).
  6. 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).
  7. 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).
  8. 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).
  9. M. Tane, T. Ichitsubo, H. Ogi, and M. Hirao, “Elastic property of aged duplex stainless steel”, Scripta Mater. 48, 229-234 (2003).
  10. H. Ogi, S. Kai. T. Ichitsubo, M. Hirao, and K. Takashima, “Elastic-stiffness coefficients of a silicon-carbide fiber at elevated temperatures: Acoustic spectroscopy and micromechanics modeling”, Philos. Mag. A. 83, 503-512 (2003).

-2002-

  1. H. Ogi, M. Hirao, and M. Shimoyama: "Activation of TiO2 photocatalyst by single-bubble sonoluminescence for water treatment", Ultrasonics, 40, 649-650, (2002).
  2. R.Tarumi, K.Takashima and Y.Higo, Formation of oriented nanocrystals in an amorphous alloy by focused-ion-beam irradiation, Appl. Phys. Lett. 81, 4610-4612 (2002).
  3. 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.
  4. 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).
  5. 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).
  6. 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).
  7. H. Ogi, K. Sato, T. Asada, and M. Hirao, "Complete mode identification for resonance ultrasound spectroscopy”, J. Acoust. Soc. Am. 112, 2553-2557 (2002).
  8. H. Ogi, Y. Kawasaki, M. Hirao, and H. Ledbetter, “Acoustic spectroscopy of lithium niobate: Elastic and piezoelectric coefficients", J. Appl. Phys. 92, 2451-2456 (2002).
  9. T. Ichitsubo, M. Tane, H. Ogi, M. Hirao, T. Ikeda and H. Nakajim, "Anisotropic Elastic Constants of Lotus-Type Porous Copper: Measurements and Micromechanics Modeling, Acta Materialia 50, 4105-4115 (2002).
  10. 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).
  11. 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).

-2001-

  1. 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).
  2. 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).
  3. 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).
  4. 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).
  5. M. Hirao, H. Ogi and H. Yasui, "Contactless measurement of bolt axial stress using a shear-wave electromagnetic acoustic transducer", NDT & E International 34, 179-183 (2001).

-2000-

  1. 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).
  2. 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).
  3. 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).
  4. 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).
  5. M. Hirao, H. Ogi, N. Suzuki, and T. Ohtani, "Ultrasonic Attenuation Peak During Fatigue of Polycrystalline Copper", Acta Materialia, 48, 517-524 (2000).
  6. S. Kim, H. Ledbetter and H. Ogi, "Elastic Properties of Nb-Ti/Cu composite", J. Appl. Phys. 88, 2378-2381 (2000).
  7. 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, 2769-2774 (2000).
  8. H. Ogi, H. Ledbetter, and S. Kim, "Snoek Relaxation in Copper-Precipitated Alloy Steel", J. Alloys and Compounds 310, 432-435 (2000).

-1999-

  1. 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).
  2. 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, 2787-2796 (1999).
  3. H. Ogi, H. Ledbetter, S. Kim, and M. Hirao "Contactless Mode-Selective Resonance Ultrasound Spectroscopy: Electromagnetic Acoustic Resonance", J. Acoust. Soc. Am. 106, 660-665 (1999).
  4. Masahiko Hirao and Hirotsugu Ogi, "An SH-Wave EMAT technique for gas pipelineinspection", NDT & E International 32, 127-132 (1999).
  5. H. Ogi, M. Hirao, T. Ohtani, "Line-Focusing Electromagnetic Acoustic Transducers for Detection of Slit Defects", IEEE Trans. on Ultrason., Ferroele. Freq. Cont. 46, 341-346 (1999).

-1998-

  1. H.Ogi, N.Suzuki, and M.Hirao: "Noncontact Ultrasonic Spectroscopy on Deforming Polycrystalline Copper; Dislocation Damping and Acoustoelasticity", Metal. and Mater. Trans. A. 29A, pp. 2987-2993 (1998).
  2. H. Ogi, M. Hirao, and T. Ohtani, "Line-focusing of ultrasonic SV wave by electromagnetic acoustic transducer", J. Acoust. Soc. Am. 103, 2411-2415 (1998).

-1997-

  1. H.Ogi: "Field Dependence of Coupling Efficiency between Electromagnetic Field and Ultrasonic Bulk Waves", J. Appl. Phys., 82, pp. 3940-3949 (1997).
  2. H.Ogi, M.Hirao, and K. Minoura: "Noncontact Measurement of Ultrasonic Attenuation during Rotating Fatigue Test of Steel", J. Appl. Phys., 81, pp. 3677-3684 (1997).
  3. H.Ogi and M.Hirao: "Ultrasonic Noise Relaxation for Evaluating Thermal Aging Embrittlement of Duplex Stainless Steels", Res. Nondestr. Eval. 9, pp. 171-180 (1997).