Yu-Hsin Liu

Title: Innovations of Yu-Hsin Liu in Retinal Prostheses and Signal Amplification

Introduction

Yu-Hsin Liu is a prominent inventor based in San Diego, CA, known for his groundbreaking work in the field of optoelectronic devices. With a total of 4 patents, Liu has made significant contributions to technologies aimed at restoring vision and enhancing signal amplification.

Latest Patents

One of Liu's latest patents focuses on retinal prostheses. His invention, titled "Optoelectronic retinal prostheses," transduces light into electrical current for neural stimulation. This novel optoelectronic pixel architecture comprises a vertically integrated photo junction field-effect-transistor (Photo-JFET) and a neural stimulating electrode. Experimental measurements demonstrate that optically addressed Photo-JFET pixels utilize phototransistive gain to produce a broad range of neural stimulation current, effectively stimulating retinal neurons in vitro. The compact nature of the Photo-JFET pixel can enable high-resolution retinal prostheses with a theoretical visual acuity of approximately 20/60, helping to restore vision in patients with degenerative retinal diseases.

Another significant patent involves methods, systems, and devices for amplification of signals based on a cycling excitation process in disordered materials. This invention discloses low noise and high efficiency photoelectric amplification based on a cycling excitation process (CEP). The device for amplifying signals of light-induced photocurrent includes an anode connected to a positive terminal of a voltage source, a disordered material layer structured to have a thickness of 100 nm or less, and a cathode connected to the disordered material layer. This device is operable to amplify photoexcited carriers based on photon absorption, producing an external quantum efficiency of at least 100%.

Career Highlights

Yu-Hsin Liu has worked with notable institutions, including the University of California and Nanovision Biosciences, Inc. His work has been instrumental in advancing the field of optoelectronics and improving the quality of life for individuals with vision impairments.

Collaborations

Liu has collaborated with esteemed colleagues, including Yu-Hwa Lo and Yuchun Zhou, contributing to the innovative research and development in his field.

Conclusion

Yu-Hsin Liu's contributions to retinal prostheses and signal amplification technologies highlight his role as a leading inventor in optoelectronics. His innovative patents and collaborations