墨水中含有纳米银粒子，所以它画出来的线条是可以当做电路使用的，能把电池与LED灯连接起来，并且可以接通点亮了。当然，这还只是初级玩法，你还可以玩得更高端一些。
导电墨水（导电笔）
2018年8月26日
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