Chin Li Cheung

Title: Innovations of Chin Li Cheung in Nanotechnology

Introduction

Chin Li Cheung is a prominent inventor based in Cambridge, MA (US). He has made significant contributions to the field of nanotechnology, particularly in the development of carbon single wall nanotubes (SWNTs). With a total of 2 patents, his work has implications for various applications in scientific research and technology.

Latest Patents

Cheung's latest patents include groundbreaking methods for the direct growth of nanotubes and their use in nanotweezers. One patent discloses a method of producing carbon single wall nanotubes by chemical vapor deposition (CVD). This method allows for the growth of SWNTs on a metal-catalyzed support surface, such as commercially available silicon tips for atomic force microscopes (AFM). The growth characteristics of the SWNTs can be finely controlled by adjusting the density of the catalyst and the CVD growth conditions. Additionally, the length of the SWNTs can be modified through pulsed electrical etching. These nanotubes can be utilized in structures with defined patterns and for nano-tweezers, which may be instrumental in manipulating biological materials at a molecular level.

Another patent focuses on the fabrication of nanotube microscopy tips. This method involves creating SWNT probes for use in atomic force microscopy. In one embodiment, the SWNTs are fabricated using a metallic salt solution, while in another, metallic colloids are employed. These innovations enhance the capabilities of atomic force microscopy, allowing for more precise measurements and manipulations.

Career Highlights

Chin Li Cheung is affiliated with Harvard College, where he continues to advance research in nanotechnology. His work has garnered attention for its potential applications in various scientific fields, including materials science and biotechnology.

Collaborations

Cheung has collaborated with notable scientists such as Charles M. Lieber and Jason H. Hafner. These partnerships have further enriched his research and contributed to the advancement of nanotechnology.

Conclusion

Chin Li Cheung's innovative work in the field of nanotechnology, particularly in the development of carbon single wall nanotubes, showcases his significant contributions to science and technology. His patents reflect a commitment to advancing research and practical applications in this exciting area.