Chao-Peng Cheng

Title: Chao-Peng Cheng: Innovator in Magnetic Recording Technology

Introduction

Chao-Peng Cheng is a notable inventor based in Fremont, California. He has made significant contributions to the field of magnetic recording technology. His innovative approach has led to advancements in the fabrication of perpendicular magnetic recording heads.

Latest Patents

Cheng holds a patent for a method of reducing main pole corrosion during aluminum oxide etching. This method involves removing an alumina layer around a main pole layer during the fabrication process. The alumina etch sequence includes immersing a substrate in a series of aqueous solutions purged with an inert gas to avoid corrosion of the main pole. Initially, the substrate is soaked and heated in deionized water. Once heated, the substrate is immersed in an etching bath at about 80°C and pH 10.5. The bath chemistry is preferably based on NaCO and NaHCO, and nitrogen purging improves etch uniformity and reduces residue. After etching, the substrate is rinsed in a second deionized water bath and subjected to a quick dump rinse before drying.

Career Highlights

Chao-Peng Cheng has been instrumental in advancing technologies related to magnetic recording. His work has been recognized for its impact on improving the efficiency and reliability of recording heads. He is currently associated with Headway Technologies, Incorporated, where he continues to innovate in this specialized field.

Collaborations

Cheng has collaborated with notable colleagues, including Chih-I Yang and William Stokes. Their combined expertise has contributed to the development of cutting-edge technologies in magnetic recording.

Conclusion

Chao-Peng Cheng's contributions to the field of magnetic recording technology exemplify the importance of innovation in advancing engineering practices. His patented methods are paving the way for future developments in the industry.