Generation of atmospheric negative corona discharge using Taylor cone and its application for plasma reactor

泰勒锥产生大气负电晕放电及其在等离子体反应器中的应用

• 批准号: 23740409
• 负责人: SHIRAI Naoki
• 金额: $ 2.66万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23740409/
• 关键词: 大気圧プラズマ; コロナ放電; テイラーコーン; 液体電極

We examined characteristics of atmospheric negative corona discharge using liquid needle cathode. As a liquid needle cathode, we adopted Taylor cone with conical shape. A nozzle with inner diameter of 10 mm is filled with liquid, and a plate electrode is placed at 10 mm above the nozzle. By applying a dc voltage between electrodes, Taylor cone is formed. To change the liquid property, we added sodium dodecyl sulfate to reduce the surface tension, sodium sulfate to increase the conductivity, and polyvinyl alcohol to increase the viscosity, in distilled water. The liquid, with high surface tension such as pure water could not form a Taylor cone. When we reduced surface tension, a Taylor cone was formed and the stable corona discharge was observed at the tip of the cone. When we increased viscosity, a liquid filament protruded from the solution surface was formed and corona discharge was observed along the filament at position 0.7-1.0 mm above fromthe tip of the cone. Increasing the conductivity resulted in the higher light intensity of corona and the lower corona onset voltage. When we use the metal needle electrode, the corona discharge depends on the voltage and the gap length. Using Taylor cone, different types of discharges were observed by changing the property of the liquid.

研究了液体针形阴极大气压负电晕放电特性。作为液体针阴极，我们采用了圆锥形的泰勒锥。将内径为10 mm的喷嘴填充液体，并将平板电极放置在喷嘴上方10 mm处。通过在电极之间施加直流电压，形成泰勒锥。为了改变液体性质，我们在蒸馏水中加入十二烷基硫酸钠以降低表面张力，硫酸钠以增加电导率，聚乙烯醇以增加粘度。高表面张力的液体如纯水不能形成泰勒锥。当降低表面张力时，形成泰勒锥，在锥尖处观察到稳定的电晕放电。当溶液粘度增加时，溶液表面形成一条突出的液丝，在离锥尖0.7-1.0 mm处，观察到沿液丝沿着的电晕放电。电导率的增加导致电晕光强的增加和电晕起始电压的降低。当我们使用金属针电极时，电晕放电取决于电压和差距长度。利用泰勒锥，通过改变液体的性质，观察到不同类型的放电。

项目成果

液体電極を用いた大気圧負コロナ放電の生成と評価

使用液体电极的大气压负电晕放电的产生和评估

• 发表时间: 2012
• 作者: Ryuto Sekine;Naoki Shira;Satoshi Uchida;Fumiyoshi Tochikubo;関根隆人,白井直機,内田 諭,杤久保文嘉
• 通讯作者: 関根隆人,白井直機,内田 諭,杤久保文嘉

Atmospheric negative corona discharge using a Taylor cone as liquid electrode

使用泰勒锥作为液体电极的大气负电晕放电

• 发表时间: 2012
• 作者: Ryuto Sekine;Naoki Shira;Satoshi Uchida;Fumiyoshi Tochikubo
• 通讯作者: Fumiyoshi Tochikubo

Plasma-liquid interfacial phenomena of atmospheric DC glow discharge using liquid electrode

液体电极大气直流辉光放电的等离子体-液体界面现象

• 发表时间: 2013
• 作者: Naoki Shirai;Satoshi Uchida;Fumiyoshi Tochikubo
• 通讯作者: Fumiyoshi Tochikubo

Generation of atmospheric negative corona discharge using Taylor cone as liquid electrode

使用泰勒锥作为液体电极产生大气负电晕放电

• 发表时间: 2012
• 作者: Naoki Shirai;Ryuto Sekine;Satoshi Uchida;Fumiyoshi Tochikubo
• 通讯作者: Fumiyoshi Tochikubo