Lei Zhang

Title: Innovations of Lei Zhang in Negative Index Materials

Introduction

Lei Zhang is an accomplished inventor based in Ames, IA (US). She has made significant contributions to the field of negative index materials, which have important applications in optics and materials science. Her innovative work has led to the development of a patent that simplifies the creation of these materials.

Latest Patents

Lei Zhang holds a patent for "Structures with negative index of refraction." This invention provides simplified negative index materials (NIMs) using various structures, including wire-pair arrangements, 4-gap single ring split-ring resonators (SRRs), fishnet structures, and overleaf capacitor SRRs. The wire-pair arrangement utilizes a pair of short parallel wires alongside continuous wires. The 4-gap single-ring SRR features SRRs centered on the faces of a cubic unit cell, combined with a continuous wire type resonator. This combination creates a frequency band where the metamaterial is transparent while simultaneously exhibiting negative permittivity and permeability. The fishnet structure employs a metallic mesh on both sides of a dielectric spacer. The overleaf capacitor SRR modifies the gap capacities into small plate capacitors by overlapping sections of the SRR ring at the gaps, separated by a thin dielectric film. This technique is particularly effective for the 4-gap single-ring structures.

Career Highlights

Lei Zhang is affiliated with the Iowa State University Research Foundation Inc., where she continues to advance her research in negative index materials. Her work has garnered attention for its innovative approach and potential applications in various fields.

Collaborations

Lei has collaborated with notable colleagues, including Jiangfeng Zhou and Costas M Soukoulis, who have contributed to her research endeavors.

Conclusion

Lei Zhang's contributions to the field of negative index materials exemplify her innovative spirit and dedication to advancing technology. Her patent reflects a significant step forward in the development of simplified negative index materials, showcasing her expertise and commitment to research.