Hua Liu

Title: Innovations by Inventor Hua Liu

Introduction

Hua Liu is an accomplished inventor based in Excelsior, MN (US). He has made significant contributions to the field of heat-assisted magnetic recording technology. With a total of 3 patents to his name, Liu continues to push the boundaries of innovation in his industry.

Latest Patents

One of Hua Liu's latest patents focuses on calculating heater power that compensates for laser-induced writer protrusion in heat-assisted magnetic recording devices. This method involves moving a heat-assisted magnetic recording (HAMR) slider relative to a magnetic recording medium. The slider consists of a writer, a writer heater, and a near-field transducer (NFT). For various head-to-media spacings, a test tone is written to a track of the medium, which is then read, and a Discrete Fourier Transform (DFT) of the amplitude of the read test tone is captured. A first DFT curve is generated at the beginning of writing the test tones, followed by a second DFT curve at a saturated state of writing. The horizontal shift between these two DFT curves is computed to determine the writer heater power required to compensate for NFT clearance offset due to laser-induced writer protrusion.

Career Highlights

Hua Liu has established himself as a key figure at Seagate Technology Incorporated. His work has been instrumental in advancing the capabilities of magnetic recording technologies. Liu's innovative approaches have garnered attention and respect within the engineering community.

Collaborations

Hua Liu collaborates with talented individuals such as Zhen Wei and Timothy A Madsen. These partnerships enhance the creative process and contribute to the successful development of new technologies.

Conclusion

Hua Liu's contributions to the field of heat-assisted magnetic recording are noteworthy. His innovative patents and collaborative efforts continue to shape the future of technology in this area.