Insect muscle potential recording by an epoxy-based multichannel microelectrode

I have been developing microelectrodes for recording the action potentials of insects from their nerves and muscles. Until last year, I used silicon as the electrode material and fabricated microelectrodes by anisotropic etching and reactive ion etching. However, it was very difficult to control the shape and size of the microprobes of electrodes. In this paper, I report a new method of microelectrode fabrication. An epoxy-based photoresist is used as the fabrication material. The results of recording the insect muscle potential with the microelectrodes are also reported.