Ultrasonic Resonance Spectrometry with Fourier Synthesized Pseudorandom Noise Excitation and Its Application to a Lyotropiec Liquid Crystal
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概要
- 論文の詳細を見る
Time domain measurement to obtain ultrasonic resonance spectra was made using Fourier Synthesized Pseudorandom Noise (FSPN) excitation in order to observe the viscoelastic property of a lyotropic liquid crystal. The FSPN with multiple frequency components was amplitude-modulated by a carrier signal with a much higher single fre-quency comronent, and a ctuadrature detection technictue was used to obtain a shear ultrasonic resonance spectrum produced between two transducers. A reflection method was applied to observe mechanical impedance of viscous and elastic materials at about 3 MHz.The viscosities obtained for standard viscous materials agreed well with literature values, and the rigidity and viscosity of a Iyorropic liquid crystal of Sodium Lauryl Sulfate wirh water were measured ; they were 〜 10^6 dyn/cm^2 and 〜0.1 P, respectively.
- 社団法人応用物理学会の論文
- 1982-11-20
著者
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Mitaku Shigeki
Department of Applied Physics, Graduate School of Engineering, Nagoya University
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Naito Yasuhiro
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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NAKAMURA HARUKI
Department of Applied Physics, Faculty of Engineering, University of Tokyo
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Nakamura Haruki
Department Of Applied Physics Faculty Of Engineering The University Of Tokyo
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OKANO Koji
Department of Applied Physics, Faculty of Engineering, The University of Tokyo
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Okano Koji
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Okano Koji
Department Of Applied Phisic Faculty Of Engineering The University Of Tokyo
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TSUBOI Yukitoshi
Department of Applied Physics, Faculty of Engineering, University of Tokyo
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Mitaku Shigeki
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Tsuboi Yukitoshi
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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OKANO Koji
Department of Applied Physics, Faculty of Engineering, University of Tokyo
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