Nonlinear Optical Properties and Organic Gas Effects of VOPc Thick Films Prepared on KBr Substrate

Shidara, Toshitaka; Jin, Yonglong; Uchida, Yoshiyuki; Kojima, K.; Ohashi, Asao; Ochiai, Shizuyasu; Mizutani, Teruyoshi

doi:10.1541/ieejeiss.123.1706

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…6,7) This indicates that the (t-Bu) 1:45 VOPc composite film is improved after being exposed to organic gas, showing with better grain size, molecular orientation, homogeneity, and surface smoothness than those before use to organic gas. 5,8) The third-order susceptibility ( ð3Þ ) of the (t-Bu) 1:45 VOPc composite film after being exposed to organic gas was 1:36 Â 10 À11 esu. The incident angle dependence of third-harmonic (TH) intensity of the 3T/PMMA composite film is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Optical Bistability of Terthiophene/Poly(methyl methacrylate) Composite Film Prepared Using Spin-Coating

Ochiai

Isogai

Kojima

et al. 2008

jjap

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This paper presents an unsteady flow modeling of an electrorheological (ER) valve system and verifies its effectiveness through experimental investigation. After designing a cylindrical ER valve, a dynamic model for unsteady flow of ER fluid is derived by considering the fluid inertia. The field-dependent pressure drop of the unsteady flow is then calculated and validated with the experimental result. In order to clearly observe the difference between the unsteady flow model and the steady model, the flow rate of the ER valve is analyzed under low frequency and high frequency sinusoidal inputs. In addition, in order to demonstrate the effectiveness of the proposed unsteady flow model, a position control system activated by ER valves is constructed. The dynamic model of the control system is formulated on the basis of the unsteady flow analysis, and control responses such as flow rate, pressure drop and displacement are compared between the unsteady flow and the steady flow models.

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Section: Resultsmentioning

confidence: 99%

Optical Bistability of Terthiophene/Poly(methyl methacrylate) Composite Film Prepared Using Spin-Coating

Ochiai

Isogai

Kojima

et al. 2008

jjap

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“…In sample 3, which was thermally treated for 360 min, the absorption peak at 780 nm has increased but the shoulder at 810 nm has decreased, suggesting that distortion in the VOPc thin film was increased by thermal treatment for 360 min. A fundamental study of the transition from pseudo-epitaxial growth to epitaxial growth, which depends on the relaxation of distortions, was reported by Shitara and colleagues [8]. Figure 3 shows the absorbance ratio at 810 and 780 nm versus the annealing time.…”

Section: Methodsmentioning

confidence: 93%

“…We also observed that the pseudo-epitaxial layer increased with longer thermal treatment time. The potential for increased distortion inside the VOPc thin film by thermal treatment is closely related to the increase in the pseudo-epitaxial layer [8]. Figure 5 shows the absorbance ratios at 810 and 780 nm versus the annealing time.…”

Section: Methodsmentioning

confidence: 99%

Nano vanadyl‐phthalocyanine crystals fabricated on KBr substrate

Mototani

Ochiai

Ohashi

et al. 2008

Electrical Engineering Japan

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SUMMARYVanadyl-phthalocyanine (VOPc) thin films deposited on a KBr substrate by molecular beam epitaxy (MBE) consist of nano-VOPc crystals epitaxially grown. The nanoVOPc crystals acquire a square shape as a result of annealing at 150 °C. The size of the nano-crystals is controllable by changing the conditions of MBE deposition and thermal treatment. The growth processes of nano-crystals on the KBr substrate are elucidated experimentally and are shown to be closely related to strong interaction between the VOPc molecules and the KBr substrate. Their mechanisms can be explained in terms of surface diffusion of the VOPc molecules on the KBr substrate.

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