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youngfi木蟲 (小有名氣)
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[求助]
Electrowetting 已有1人參與
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| 有沒有做過類似Electrowetting實驗的同學(xué)。本人做浸潤的相關(guān)基礎(chǔ)研究,但是不直接做Electrowetting,最近想做個這方面的展示實驗,但是當(dāng)電壓加的較小時,看不到接觸角發(fā)生變化;如果電壓加的太大,又容易出現(xiàn)電解或者直接打出電火花。有經(jīng)驗的同學(xué)能不能指點一下,不知道這個Electrowetting在具體操作時應(yīng)該注意哪些細(xì)節(jié)呢?謝謝。 |

木蟲之王 (文學(xué)泰斗)
peterflyer
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設(shè)潤濕角為θ,則由維基百科:Electrowetting (http://en.wikipedia.org/wiki/Electrowetting) Cosθ=[γs-γ0ws+C*V^2/2]/γw γ0ws: The surface tension between the electrolyte and the conductor at zero electric field γs: The surface tension between the conductor and the external ambient γw: The surface tension between the electrolyte and the external ambient θ: The macroscopic contact angle between the electrolyte and the dielectric C:T he capacitance of the interface, єrє0/t, for a uniform dielectric of thickness t and permittivity єr V: The effective applied voltage, integral of the electric field from the electrolyte to the conductor 個人認(rèn)為,γs和γ0ws一般不變。如此一來,使C、V增加或使γw減小的因素都會使得Cosθ變大,也就是使θ變小?梢試L試一下在電解質(zhì)液體中添加一些純度高的非離子表面活性劑或無水乙醇,降低γw。 |
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