I discovered that the device hasn't functioned in months.

我发现它已经数月没有运作了。

To cut costs, Dr Poulikakos and Dr Haechler applied a superhydrophobic coating to the surface of the chamber, forcing water droplets off the surface and making it possible for the device to function without electricity.

为了降低成本， Poulikakos 博士和 Haechler 博士在腔体表面涂上了一层超疏水涂层，迫使水滴从表面滴落， 使得该设备无需电力即可运行。