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LIU931232

银虫 (小有名气)

[求助] 如何减小界面电阻 已有1人参与

请问各种虫友,本人在金属上涂了一层厚度大约1μm的导电涂层后,四探针测出的方阻为何跟在PET板上涂相同涂层得到的方阻一致呢?单独测试金属的电阻的时候是小到超量程的。
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kaifeng838

金虫 (正式写手)

【答案】应助回帖

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感谢参与,应助指数 +1
LIU931232: 金币+10, ★有帮助, 电子应该是优先走电阻最小的通道,探针之间的间距是2mm,相比于探针之间的路径,电子理论上来讲会走下面的金属层吧。 2018-01-15 13:10:53
因为你的电阻其决定作用的就是导电层,四探针根本就没接触到基板,所以基板对测试没影响
2楼2018-01-15 11:30:52
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