N. Nakamura, N. M. Watanabe, K. Hattori, K Yatsugi, and K. Suga “Surface-enhanced Raman scattering in Au nanostructures with sub-molecular gaps for molecular size detection” ACS Omega, accepted.
K. Adachi, S. Mukai, K. Higami, T. Saito, and N. Nakamura “Versatile confocal microscopy for imaging objects oscillating at frequencies exceeding the frame rate” Applied Physics Letters 126 (2025) 263704.
N. Nakamura, K. Yoshikawa, and A. Ishii Publisher’s Note: “Enhancement of hydrogen response by forming an Au submonolayer on nanogap Pd nanoparticles” Applied Physics Letters 125 (2024) 059901.
K. Adachi, H. Wilhelm, M. P. Schmidt, M. A. Carpenter “Elastic and anelastic behavior associated with magnetic ordering in the skyrmion host Cu2OSeO3” Physical Review B 109 (2024) 144413.
N. Nakamura, K. Matsuura, A. Ishii, and H. Ogi “Restructuring in bimetallic core-shell nanoparticles: Real-time observation” Physical Review B 105 (2022) 125401. (PDF)
2021
N. Nakamura, K. Kashiuchi, and H. Ogi “Multi-mode resistive spectroscopy for precisely controlling morphology of extremely narrow gap palladium nanocluster array” Review of Scientific Instruments 92 (2021) 063901.
N. Nakamura, Y. Sakamoto, and H. Ogi “Spontaneous nucleation on flat surface by depletion force in colloidal suspension” Scientific Reports 11 (2021) 8929.
L. Zhou, N. Nakamura, A. Nagakubo, and H. Ogi “Enhancement of sensitivity of Pd-based hydrogen-gas sensor by plasma exposure studied by wireless quartz resonator” Japanese Journal of Applied Physics 59 (2020) SKKB02.
2019
N. Nakamura, T. Ueno, and H. Ogi “Hydrogen-gas sensing at low concentrations using extremely narrow gap palladium nanoclusters prepared by resistive spectroscopy” Journal of Applied Physics 126 (2019) 225104. (PDF)
L. Zhou, N. Nakamura, A. Nagakubo, and H. Ogi “Highly sensitive hydrogen detection using curvature change of wireless-electrodeless quartz resonators” Applied Physics Letters 115 (2019) 171901. (PDF)
N. Nakamura, S. Nakashima, and H. Ogi “Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass” Scientific Reports 9 (2019) 12836.
N. Nakamura, T. Ueno, and H. Ogi “Precise control of hydrogen response of semicontinuous palladium film using piezoelectric resonance method” Applied Physics Letters 114 (2019) 201901. (PDF) Selected as a Featured Article!
2018
K. Adachi, H. Ogi, N. Takeuchi, N. Nakamura, H. Watanabe, T. Ito, and Y. Ozaki “Unusual elasticity of monoclinic β-Ga2O3“ Journal of Applied Physics 124 (2018) 085102. (PDF) Selected as a Featured Article!
2017
N. Nakamura and H. Ogi “Resistive spectroscopy coupled with non-contacting oscillator for detecting discontinuous-continuous transition of metallic films” Applied Physics Letters 111 (2017) 101902. (PDF)
N. Nakamura, K. Ianayama, T. Okuno, H. Ogi, and M. Hirao “Accelerated crystallization of colloidal glass by mechanical oscillation” Scientific Reports 7 (2017) 1369.
Nurmalia, N. Nakamura, H. Ogi, and M. Hirao “EMAT pipe inspection technique using higher mode torsional guided wave T(0,2)” NDT & E International 87 (2017) 78-84.
2016
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” Applied Physics Letters 109 (2016) 182108. (PDF)
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 International 83 (2016) 88-93. (Accepted Manuscrtip)
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” Physical Review B 93 (2016) 024112. (PDF)
N. Nakamura, N. Yoshimura, H. Ogi, and M. Hirao “Formation of continuous metallic film on quartz studied by noncontact resonant ultrasound spectroscopy” Journal of Applied Physics 118 (2015) 085302. (PDF)
N. Nakamura, H. Ogi, and M. Hirao “Review on acoustic transducers for resonant ultrasound spectroscopy” JOM 67 (2015) 1849-1855.
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” Applied Physics Letters 106 (2015) 091901. (PDF)
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” Nature Communications 4 (2013) 2343.
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” Review of Scientific Instruments 83 (2012) 073901. (PDF)
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” Japanese Journal of Applied Physics, 51 (2012) 07GA09.
Nurmalia, N. Nakamura, H. Ogi, M. Hirao, and K. Nakahata “Mode conversion behavior of SH guided wave in a tapered plate” NDT& E International, 45 (2012) 156-161.
N. Nakamura, A. Uranishi, M. Wakita, H. Ogi, M. Hirao, and M. Nishiyama “Elastic stiffness of L10 FePt thin film studied by picosecond ultrasonics” Applied Physics Letters, 98 (2011) 101911. (PDF)
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” Physical Review B, 82 (2010) 155436. (PDF)
N. Nakamura, T. Nakashima, H. Ogi, M. Hirao and M. Nishiyama “Fast recovery of elastic constant in thin films studied by resonant-ultrasound spectroscopy” Journal of Applied Physics, 107 (2010) 103541. (PDF)
K. Tanigaki, T. Kusumoto, H. Ogi, N. Nakamura, and M. Hirao “Measurement of Elastic Constant and Refraction Index of Thin Films at Low Temperatures Using Picosecond Ultrasound” Japanese Journal of Applied Physics, 49 (2010) 07HB01.
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” Applied Physics Express, 3 (2010) 017001.
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 (2010) pp.150-154.
2009
H. Ogi, T. Shagawa, N. Nakamura, and M. Hirao “Extraction of Interface Stiffness in Superlattices: Proposal of the Interface Elasticity Parameter” Applied Physics Express, 2 (2009) 105001.
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” Applied Physics Letters, 95 (2009) 011902.
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” Japanese Journal of Applied Physics, 48 (2009) 07GA01.
H. Tanei, K. Tanigaki, K. Kusakabe, H. Ogi, N. Nakamura, and M. Hirao “Stacking-Fault Structure Explains Unusual Elasticity of Nanocrystalline Diamonds” Applied Physics Letters, 94 (2009) 041914.
H. Ogi, T. Shagawa, N. Nakamura, M. Hirao, H. Odaka, and N. Kihara “Elastic Constant and Brillouin Oscillations in Sputtered Vitreous SiO2 Thin Films” Physical Review B, 78 (2008) 134204.
N. Nakamura, H. Ogi, T. Shagawa, and M. Hirao “Recovery of Elastic Constant of Ultra Thin Cu Films by Low Temperature Annealing” Applied Physics Letters, 92 (2008) 141901.
H. Ogi, M. Fujii, N. Nakamura, T. Shagawa, and M. Hirao “Resonance Acoustic-Phonon Spectroscopy for Studying Elasticity of Ultrathin Films” Applied Physics Letters, 90 (2007) 191906.
H. Ogi, T. Ohmori, N. Nakamura, and M. Hirao “Elastic, Anelastic, and Piezoelectric Coefficients of α-Quartz Determined by Resonance Ultrasound Spectroscopy” Journal of Applied Physics, 100 (2006) 053511.
N. Nakamura, H. Ogi, H. Nitta, H. Tanei, M. Fujii, T. Yasui, and M. Hirao “Study on Elastic Anisotropy of Cu Thin Films by Resonant-Ultrasonud Spectroscopy Coupled with Laser Doppler Interferometry and Pump-Probe Photoacoustics” Japanese Journal of Applied Physics, 45, 5B (2006) pp.4580-4584.
H. Ogi, N. Nakamura, H. Tanei, R. Ikeda, M. Hirao, and M. Takemoto “Off-Diagonal Elastic Constant and sp2-Bonded Graphitic Grain Boundary in Nanocrystalline-Diamond Thin Films” Applied Physics Letters, 86 (2005) 231904.
N. Nakamura, H. Ogi, M. Hirao, and T. Ono “Determination of anisotropic elastic constants of superlattice thin films by resonant-ultrasound spectroscopy” Journal of Applied Physics, 97 (2005) 013532.
N. Nakamura, H. Ogi, and M. Hirao “Resonance ultrasound spectroscopy with laser-doppler interferometry for studying elastic properties of thin films” Ultrasonics, 42 (2004) pp.491-494.
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 (2004) pp.183-187.
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 (2004) pp.765-771.
2003
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” Journal of Applied Physics, 94 (2003) pp.6405-6410.