The same stuff that stains your coffee mug could reduce pollution in the computer hard-drive industry, while saving drive makers millions of dollars in manufacturing costs.
Two UA engineering grads and a UA engineering professor have developed an environmentally friendly polishing/lapping slurry that could save millions for computer hard-drive manufacturers. They are (from left) Materials Science and Engineering (MSE) alum Don Zipperian (Pace Technologies), MSE alum John Lombardi (Ventana Research Corp.) and MSE Professor Srini Raghavan. (Photo by Erica von Koerber, Evon Photography)
This separatory funnel contains an additive for polishing/lapping slurries that was developed by Ventana Research Corp. The additive is derived from green tea. (Photo by Erica von Koerber, Evon Photography)
The compound is derived from the tannin phytochemicals commonly found in plants. Green tea has a lot of them.
John Lombardi, president of Tucson-based Ventana Research Corp. combined phytochemicals from green-tea extract, synthetic proteins and an abrasive to produce a lapping slurry that is three to four times faster at polishing magneto-resistive heads than the ones currently in use. An added bonus — one that could save millions of dollars for hard-drive manufacturers — is that its also environmentally friendly, unlike many of the solvent-based slurries now used.
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