Kook Heon Char

Title: Kook Heon Char: Innovator in Light Emitting Devices and Nanoparticle Technologies

Introduction

Kook Heon Char is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the fields of light emitting devices and nanoparticle technologies. With a total of seven patents to his name, Char's work is recognized for its innovative approaches and practical applications.

Latest Patents

One of Char's latest patents is a light emitting device that features a photonic crystal structure. This device comprises a crystal structure where nanospheres are densely arranged in a three-dimensional manner. The nanospheres are equipped with phosphors that are excited by an excitation source, allowing them to emit light at a wavelength longer than the pump photon of the excitation source. The photonic crystal structure also possesses at least a photonic bandgap along a specific crystal orientation, with the wavelength of the pump photon overlapping a photonic bandedge region. Another notable patent involves methods for dispersing nanoparticles and producing nanoparticle thin films. This method includes modifying the surface of nanoparticles to enable charging, which controls the electrostatic attractive force between the charged nanoparticles and a substrate, as well as the repulsive force between individual nanoparticles through pH variation.

Career Highlights

Kook Heon Char has worked at prestigious institutions, including Seoul National University and the Snur & Db Foundation. His experience in these organizations has allowed him to advance his research and development in innovative technologies.

Collaborations

Char has collaborated with notable colleagues such as Wan Ki Bae and Eun Joo Jang. These partnerships have contributed to the success of his projects and the advancement of his inventions.

Conclusion

Kook Heon Char is a distinguished inventor whose work in light emitting devices and nanoparticle technologies has garnered attention in the scientific community. His innovative patents and collaborations reflect his commitment to advancing technology and contributing to the field.