start-ver=1.4
cd-journal=joma
no-vol=34
cd-vols=
no-issue=4
article-no=
start-page=845
end-page=848
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=200805
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Improvement of piezoresistance properties of silicon carbide ceramics through co-doping of aluminum nitride and nitrogen
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The piezoresistance coefficient was measured on co-doped silicon carbide ceramics. Evaluation samples of alpha-silicon carbide ceramics were first fabricated by glass capsule HIP method using powder mixture of silicon carbide and aluminum nitride with various ratios. The resultant aluminum nitride added silicon carbide ceramics were doped with nitrogen by changing the post-HIP nitrogen gas pressure. The lattice parameter increased with the amount of adding aluminum nitride indicating that the incorporated aluminum substituted smaller silicon atoms. After post-HIP treatment, lattice parameter then decreased with nitrogen gas pressure. The piezoresistive coefficient increased with the addition of aluminum nitride, it further increased with the nitrogen doping pressure.
en-copyright=
kn-copyright=

en-aut-name=KishimotoAkira
en-aut-sei=Kishimoto
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=OkadaYasuyuki
en-aut-sei=Okada
en-aut-mei=Yasuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=HayashiHidetaka
en-aut-sei=Hayashi
en-aut-mei=Hidetaka
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University

affil-num=2
en-affil=
kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University

affil-num=3
en-affil=
kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University
en-keyword=HIP
kn-keyword=HIP
en-keyword=co-doping
kn-keyword=co-doping
en-keyword=donor
kn-keyword=donor
en-keyword=acceptor
kn-keyword=acceptor
en-keyword=silicon carbide
kn-keyword=silicon carbide
en-keyword=strain sensor
kn-keyword=strain sensor
END

start-ver=1.4
cd-journal=joma
no-vol=38
cd-vols=
no-issue=9
article-no=
start-page=1751
end-page=1759
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=200509
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Flow-induced hardening of endothelial nucleus as an intracellular stress-bearing organelle
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The mechanical contribution of nucleus in adherent cells to bearing intracellular stresses remains unclear. In this paper, the effects of fluid shear stress on morphology and elastic properties of endothelial nuclei were investigated. The morphological observation suggested that the nuclei in the cytoplasm were being vertically compressed under static conditions, whereas they were elongated and more compressed with a fluid shear stress of 2 Pa (20 dyn/cm(2)) onto the cell. The elongated nuclei remained the shape even after they were isolated from the cells. The micropipette aspiration technique on the isolated nuclei revealed that the elastic modulus of elongated nuclei, 0.62 +/- 0.15 kPa (n = 13, mean +/- SD), was significantly higher than that of control nuclei, 0.42 +/- 0.12 kPa (n = 11), suggesting that the nuclei remodeled their structure due to the shear stress. Based of these results and a transmission electron microscopy, a possibility of the nucleus as an intracellular compression-bearing organelle was proposed, which will impact interpretation of stress distribution in adherent cells. (C) 2005 Elsevier Ltd. All rights reserved.
en-copyright=
kn-copyright=

en-aut-name=DeguchiShinji
en-aut-sei=Deguchi
en-aut-mei=Shinji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=MaedaKenjiro
en-aut-sei=Maeda
en-aut-mei=Kenjiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OhashiToshiro
en-aut-sei=Ohashi
en-aut-mei=Toshiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SatoMasaaki
en-aut-sei=Sato
en-aut-mei=Masaaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Energy Systems Engineering, Graduate School of Natural Science and Technology, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University

affil-num=3
en-affil=
kn-affil=Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University

affil-num=4
en-affil=
kn-affil=Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University
en-keyword=cell mechanics
kn-keyword=cell mechanics
en-keyword=nucleus
kn-keyword=nucleus
en-keyword=mechanical properties
kn-keyword=mechanical properties
en-keyword=shear stress
kn-keyword=shear stress
en-keyword=mechanotransduction
kn-keyword=mechanotransduction
en-keyword=atomic-force microscopy
kn-keyword=atomic-force microscopy
en-keyword=shear-stress
kn-keyword=shear-stress
en-keyword=mechanical-properties
kn-keyword=mechanical-properties
en-keyword=viscoelastic
kn-keyword=viscoelastic
en-keyword=properties
kn-keyword=properties
en-keyword=cells
kn-keyword=cells
END