Qinli Ma

Title: Qinli Ma: Inventor in Magnetic Switching Technologies.

Introduction

Qinli Ma is an inventor based in Baltimore, Maryland, and is associated with Johns Hopkins University. His patent work focuses on magneto-electronic devices and methods for controlling magnetic units with electrical current.

Latest Patents

Ma’s listed patent portfolio includes 2 patents addressing magnetic switching and device design.

“Topological insulator-based high efficiency switching of magnetic unit, method and applications” describes magneto-electronic devices that use a spin-orbit torque generator layer containing topological-insulator material. The designs pair this layer with magnetic memory layers and sensing electrodes that can measure the Hall effect. The magnetic layers may use ferromagnetic materials with perpendicular or in-plane magnetic anisotropy.

“Heavy metal multilayers for switching of magnetic unit via electrical current without magnetic field, method and applications” describes an electric-current-controllable magnetic unit. Its structure includes a substrate, an electric-current channel containing a composite heavy-metal multilayer, a capping layer, and at least one ferromagnetic layer. The approach is designed to switch the magnetic unit using electrical current without an external magnetic field.

Career Highlights

Ma’s listed affiliation is Johns Hopkins University. His patent topics connect materials and device structures with electrical control of magnetic states, including spin-orbit torque and heavy-metal multilayers.

Collaborations

The provided information identifies Yufan Li and Chia-ling Chien as Ma’s coworkers. Their names are associated with his professional network, though specific roles in the listed patents are not provided.

Conclusion

Qinli Ma’s patent work at Johns Hopkins University centers on approaches to magnetic switching that use electrical current and engineered material layers.