Chang Han Je

Title: Innovations by Chang Han Je: Pioneering Flow and Fluorescence Sensors

Introduction

Chang Han Je, a notable inventor based in Daejeon, South Korea, has made significant contributions to the fields of sensor technology, holding an impressive portfolio of 25 patents. His innovative work has focused on enhancing the performance and functionality of flow and fluorescence sensors, showcasing his expertise and creativity in engineering.

Latest Patents

Among Chang Han Je's latest patents is a groundbreaking invention involving a flow sensor that performs multi-level down sampling. This invention details a method of operating a flow sensor, which includes receiving ultrasonic signals reflected from particles, generating first and second digital signals, and comparing Doppler frequencies with predetermined reference frequencies. This technique enables precise flow information acquisition based on output frequencies, allowing for improved accuracy in measuring fluid dynamics.

Another remarkable invention is his fluorescence sensor specifically designed for measuring microalgae. This innovative device comprises a fluorescence measurement unit that emits excitation light and detects the resulting fluorescence from a measurement region. Furthermore, it incorporates an algae control unit that utilizes ultrasonic standing waves to control algal density, combined with a signal processing unit that calculates algal density through fluorescence intensity signals. This invention has significant implications for environmental monitoring and bioengineering.

Career Highlights

Chang Han Je has worked with esteemed institutions such as the Electronics and Telecommunications Research Institute and the Gwangju Institute of Science and Technology. His experience in these organizations has allowed him to develop and refine his innovative ideas, leading to his impressive collection of patents.

Collaborations

Chang has collaborated with prominent researchers such as Woo Seok Yang and Gunn Hwang. Working alongside these talented individuals has fostered a collaborative environment that encourages the exchange of ideas and enhances the development of groundbreaking technologies.

Conclusion

In summary, Chang Han Je stands out as a pioneering inventor in sensor technologies, with a focus on flow and fluorescence sensors. His contributions have not only advanced scientific understanding but also provided practical solutions with far-reaching applications. Through his continual innovation, he remains a significant figure in the realm of engineering and technology.