Application to actuators of fullerenol doped polyurethane elastomer (PUE)

Kyokane, Jun; Tokugi, K.; Uranishi, D.; Miyata, Motoyuki; Ueda, Tsutomu; Yoshino, K.

doi:10.1016/s0379-6779(00)00987-5

Cited by 6 publications

(4 citation statements)

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“…The chemistry of fullerene C 60 and its derivatives has attracted a great deal of interest due to the outstanding physical and chemical properties of these compounds. Among the great number of derivatives that have been synthesized, water-soluble fullerene derivatives have been investigated to date mostly within the framework of biological and medical applications. − Fullerenol, synthesized for the first time by Chiang et al, − is a good example of a water-soluble fullerene derivative; however, this compound has been used not only in medical applications − but also as a piezoelectric and proton conducting material …”

Section: Introductionmentioning

confidence: 99%

“…Among the great number of derivatives that have been synthesized, water-soluble fullerene derivatives have been investigated to date mostly within the framework of biological and medical applications. [1][2][3] Fullerenol, synthesized for the first time by Chiang et al, [4][5][6][7][8][9] is a good example of a water-soluble fullerene derivative; however, this compound has been used not only in medical applications [10][11][12][13][14][15][16][17] but also as a piezoelectric 18 and proton conducting material. 19 Our research interest in these compounds is based upon their potential use as new materials for solar energy conversion and storage.…”

Section: Introductionmentioning

confidence: 99%

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Electrical and Optical Properties of Fullerenol Langmuir−Blodgett Films Deposited on Polyaniline Substrates

Rincón

Campos

et al. 2003

J. Phys. Chem. B

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The synthesis of fullerenol with various degrees of hydroxylation and the use of a low hydroxylated product to form stable Langmuir films are reported in this work, along with the optical and electrical properties of Langmuir-Blodgett (LB) films obtained on glass and polyaniline (PANI) substrates. The data suggest that an average of 9-12 hydroxyl groups are bound preferentially on one side of the C 60 cage and this allows the formation of stable two-layer films at the air/water interface. The large anisotropy of the hydroxylated molecule provides organized LB films of the type substrate-(D-C 60 -D-C 60 -) n , with D representing the hydroxyl groups. The electrical conductivity of LB films deposited on glass is equivalent to that reported for highly conductive polymeric C 60 but several orders of magnitude higher than that for disordered fullerenol pellets. UV-vis absorptions provide evidence that fullerenol layers cause the deprotonation of PANI, rendering a polymer with low conductivity. The loss of conductivity disagrees with the behavior expected for a donor (PANI)/acceptor (fullerenol) interface, even though current-voltage (I-V) curves of fullerenol LB /PANI junctions indicate some degree of electrical rectification. Additionally, transients observed at large bias on the I-V curves agree with the reported proton conductivity of fullerenol.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrical and Optical Properties of Fullerenol Langmuir−Blodgett Films Deposited on Polyaniline Substrates

Rincón

Campos

et al. 2003

J. Phys. Chem. B

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“…With the development of micromechanics and micro-optoelectro-mechanical systems (MOEMS), the requirements of microactuating technology and microactuators have been increased. Most of the previous microactuators utilize conventional driving principles such as magnetic [1], electrostatic [2], piezoelectric [3,4], magnetostrictive [5], and thermal actuation [6,7], among which, thermal actuation includes electrothermal actuation [8][9][10] and optothermal actuation [11,12]. In an electrothermal actuator, thermal deformation occurs when electric current flows through two expansion arms of differing resistance [13,14], so that electrothermal actuation is achieved.…”

Section: Introductionmentioning

confidence: 99%

Theoretical model of an optothermal microactuator directly driven by laser beams

Xu¹,

Zhang²,

Xu³

et al. 2015

J. Micromech. Microeng.

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This paper proposes a novel method of optothermal microactuation based on single and dual laser beams (spots). The theoretical model of the optothermal temperature distribution of an expansion arm is established and simulated, indicating that the maximum temperature of the arm irradiated by dual laser spots, at the same laser power level, is much lower than that irradiated by one single spot, and thus the risk of burning out and damaging the optothermal microactuator (OTMA) can be effectively avoided. To verify the presented method, a 750 μm long OTMA with a 100 μm wide expansion arm is designed and microfabricated, and single/dual laser beams with a wavelength of 650 nm are adopted to carry out experiments. The experimental results showed that the optothermal deflection of the OTMA under the irradiation of dual laser spots is larger than that under the irradiation of a single spot with the same power, which is in accordance with theoretical prediction. This method of optothermal microactuation may expand the practical applications of microactuators, which serve as critical units in micromechanical devices and micro-opto-electro-mechanical systems (MOEMS).

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“…They have attracted much attention of researchers due to their outstanding physical and chemical properties. These derivatives have been used not only in medical and bio-applications [3][4][5] but also in dielectric [6], piezoelectric [7], and proton conducting and optical materials [8,9].…”

Section: Introductionmentioning

confidence: 99%

Dielectric Properties of Au/C60 (OH) 24-26/Au Structure

Sun¹,

Kanemitsu²,

Kirimoto³

2015

PAMJ

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Dielectric properties of the Au/C 60 (OH) 24-26 /Au structure were studied by measuring a.c. impedance and d.c. current in a wide temperature range. Three dielectric response characteristics were identified from Cole-Cole plots of a.c. impedance and dielectric dissipation factor of the structure. First, the bulk resistance and capacitance of the structure were observed at frequencies below 10 Hz, regardless of preparation condition of the Au electrode. Secondly, an interfacial characteristic of the Au foil/C 60 (OH) 24-26 contact was observed as a peak of dielectric dissipation factor at frequency of 200 Hz. Thirdly, an interfacial characteristic of the Au paste/C 60 (OH) 24-26 contact was also observed as a peak of dielectric dissipation factor at frequency of 1.7 × 10 Hz.

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Application to actuators of fullerenol doped polyurethane elastomer (PUE)

Cited by 6 publications

References 0 publications

Electrical and Optical Properties of Fullerenol Langmuir−Blodgett Films Deposited on Polyaniline Substrates

Electrical and Optical Properties of Fullerenol Langmuir−Blodgett Films Deposited on Polyaniline Substrates

Theoretical model of an optothermal microactuator directly driven by laser beams

Dielectric Properties of Au/C60 (OH) 24-26/Au Structure

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