Abstract
Porosification of Surface of Platinum Electrode by Anisotropic Etching
Highlights
In neural prosthetics, electrical stimulation is widely used and contributes to improving the quality of life for many patients
The maximum injectable charge per unit area that can be delivered without an accompanying irreversible electrochemical reaction, such as the electrolysis of water, is known as the charge injection capacity (Qinj).(4,5) A large Qinj is an indicator of the performance of a stimulation electrode; a large Qinj is a desirable characteristic
We proposed a porosification method with anisotropic etching for platinum electrodes
Summary
Electrical stimulation is widely used and contributes to improving the quality of life for many patients. There are many commercial neural stimulators, which include the following: cardiac pacemakers that electrically stimulate the cardiac muscle to treat arrhythmias and heart failure; deep brain stimulator to improve Parkinson’s disease or essential tremor; functional electrical stimulator to stimulate peripheral nerve and move a paralyzed muscle; and cochlear implants that transmit auditory information to the hearing impaired.[1] In recent years, visual prostheses have been put into practical use[2,3] and have been reported to partially restore vision in blind patients. That the impedance of the stimulation electrode is sufficiently small. High impedance leads to heat generation, which could damage the neural tissue
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