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Tanaka, Masaaki; Yagi, Shigenori; Tabata, Norikazu

doi:10.1541/ieejfms1972.102.533

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…In the present results shown in figure 3, Lissajous figures are also a form of parallelograms. We believe the DBDs observed in this study are essentially similar to the typical DBDs previously reported [27][28][29][30]. When the surface potential on the PT increases owing to the polarization charges induced on the PT and the voltage in the gap exceeds the breakdown voltage V s , many microdischarges are initiated randomly in the gap.…”

Section: Resultssupporting

confidence: 88%

“…Thus, small current pulses with higher repetition rates are formed in samples B and C as shown in figure 7(b). These features are well consistent with the results reported by Tanaka et al [28,29]. They observed precisely the DBDs generated in nitrogen and air with and without an UV irradiation to both electrodes in order to understand the discharge characteristics for the practical ozone generators [29].…”

Section: Difference In Discharge Mode Among the Dielectric Electrode ...supporting

confidence: 90%

“…This process proceeds locally and randomly in the gap space during the discharge periods. If the voltage at which the microdischarge is interrupted is defined as V e , the line width V in the Lissajous figure of the discharge periods corresponds to V s − V e [28], as shown in figure 4. Therefore, the actual gap voltage in the discharge duration is considered to fluctuate between V s and V e , and the Lissajous trace for a single microdischarge may vary in a staircase pattern within V , following the occurrence and extinction of microdischarges.…”

Section: Resultsmentioning

confidence: 99%

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Development of dielectric barrier discharge-type ozone generator constructed with piezoelectric transformers: effect of dielectric electrode materials on ozone generation

Teranishi¹,

Shimomura²,

Suzuki³

et al. 2009

Plasma Sources Sci. Technol.

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The dependence of ozone generation on the types of dielectric electrode material has been investigated using an ozone generator constructed with the piezoelectric transformer developed in our laboratory. The ozone generator is based on the excitation of the dielectric barrier discharge (DBD), which has the advantage of a compact configuration for generating ozone. Four kinds of dielectric materials are prepared for dielectric barrier electrodes. Electrical properties of the DBD and the ozone generation characteristics are investigated for the different dielectric materials. Differences in the discharge mode among the barrier electrode materials are recognized and discussed on the basis of the results of the Lissajous figures and voltage-current waveforms. During the continuous running of the generator, a temporal decrease in ozone concentration is observed owing to the temperature increase inside the reactor. Although the ozone generation characteristics are influenced by many properties of dielectrics, two important factors for achieving high-efficiency ozone generation are identified in this study. One is the use of a high-thermal conductivity material for the dielectric electrode, which functions well as a heat sink for transferring the generated heat to the outside through the material. The other factor is the control of the discharge mode. Our results show that the discharge mode that is considered as Townsend-like DBD is suitable for high-efficiency ozone generation.

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Section: Resultssupporting

confidence: 88%

Section: Difference In Discharge Mode Among the Dielectric Electrode ...supporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Development of dielectric barrier discharge-type ozone generator constructed with piezoelectric transformers: effect of dielectric electrode materials on ozone generation

Teranishi¹,

Shimomura²,

Suzuki³

et al. 2009

Plasma Sources Sci. Technol.

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“…In the present study, the measurement is performed to determine the breakdown voltage V s between a MgO film electrode and a stainless-steel (St.St.) electrode at frequencies up to 2 kHz using the gap voltage-electric charge (V -q) Lissajous figure, [15][16][17][18][19][20] because the effect of the accumulated charge is detected in the experiment. The breakdown voltage V s of MgO against p 0 d (d: gap length) is independent of the frequency f from DC to 200 Hz.…”

Section: Introductionmentioning

confidence: 99%

Secondary Ionization Coefficient of MgO and Accumulated Charge

Suzuki

Sekizawa

Kashiwagi

2011

Jpn. J. Appl. Phys.

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The (111)-oriented chemical-vapor-deposited diamond homoepitaxial layers with low defect density exhibited well-resolved free-exciton transitions in cathodoluminescence at 13 K and a sharp peak at 1332 cm À1 (linewidth: 1.9 cm À1 ) in Raman scattering. Furthermore, using these (111) layers, we fabricated metal-semiconductor field-effect transistors (FETs). FETs with an 11-mm-long gate exhibited a maximum drain current of 24 mA/mm and maximum transconductance of 14 mS/mm. These values are of the same order as those for the (001) orientation.

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“…Figure 9(a) shows the Lissajous figures obtained at the discharge treatment time of 20 min for the different electrode separations. The discharge voltage V* which is the average gap voltage during the discharge period [25][26][27] was determined from the Lissajous figures shown in Fig. 9(a).…”

Section: Gap Distance Dependence On Discharge Voltage and Electric Fi...mentioning

confidence: 99%

Decolorization of indigo carmine solution by argon dielectric barrier discharge produced on liquid surface

Yonezawa¹,

Murata²,

Teranishi³

et al. 2019

Jpn. J. Appl. Phys.

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Decolorization of indigo carmine solution was performed by excitation of argon dielectric barrier discharge (DBD) on a target solution and the effect of the gap distance on the water treatment characteristics was investigated for a gap distance between 1.0 and 2.5 mm. The argon DBD was excited by a 3 kHz sinusoidal voltage with a fixed discharge power between 1.72 and 1.76 W for each gap distance. Voltage and current waveforms and Lissajous figures were acquired to investigate the electrical characteristics of the DBD. Compared with fixing the discharge energy, a higher decolorization rate was obtained with shorter gap distance. Therefore, shortening the gap distance could lead to increased decolorization efficiency of the indigo carmine solution. The mechanism of higher efficiency with shorter gap distance is discussed on the basis of the electrical characteristics and possible plasma chemical reactions in the argon DBD on the solution surface.

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Untitled

Cited by 9 publications

References 6 publications

Development of dielectric barrier discharge-type ozone generator constructed with piezoelectric transformers: effect of dielectric electrode materials on ozone generation

Development of dielectric barrier discharge-type ozone generator constructed with piezoelectric transformers: effect of dielectric electrode materials on ozone generation

Secondary Ionization Coefficient of MgO and Accumulated Charge

Decolorization of indigo carmine solution by argon dielectric barrier discharge produced on liquid surface

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