Magnetoelectric Heterostructure-based Nanodevices for Spintronic and Biomedical Applications

Abstract: Magnetoelectric (ME) Heterostructure-based nanodevices, which couple magnetic and electric phenomena at the nanoscale with attojoule-level energy consumption, are promising for advanced spintronic and biomedical applications. This talk presents two key advancements.
 
First, an ME-based spintronic device achieves remote magnetization control using infrared (IR) light in a Ni/PMN-PT heterostructure, eliminating the need for applied electric fields or electrical contacts. Static and dynamic magnetization modulation is demonstrated via magnetoresistance and ferromagnetic resonance measurements, respectively, offering a pathway for light-controlled, energy-efficient memory and RF devices.

Second, we explored the possible integration of ME structures with microfluidics for potential biological applications. An optimized ME device employing shape-anisotropic elliptical ferromagnetic rings enables single magnetic particle, resembling size of single cell, rotation up to 90ᵒ without complex multi-electrode setup. Additionally, a novel IR-driven ME sensor quantifies magnetic nanoparticle (MNP) concentrations rapidly and accurately without external magnetic fields, achieving high sensitivity and fast response. Together, these innovations advance the functionality, integration, and biomedical potential of ME-based devices, enabling low-power, contactless control and highly precise particle manipulation critical for next-generation therapeutic and diagnostic platforms.

All are cordially invited.