Platinum Metals Rev., 2002, 46, (2), 72
Laser Drilling of Platinum Cavities
A copper laser has been used to etch and bore into coated Platinum wire electrodes (outer diameter 50—150 μm) to form ~ 30 μm diameter cavities for storing enzymes, by P. M. Vadgama of the University of Manchester (World Appl. 01/13,102). Cavities are formed in and along the length of the active electrode core. The enzymes face laterally, instead of being on a mechanically vulnerable tip, which improves effectiveness and ease of use. The electrodes are for in vivo biological sensors.