In the Klein Group at Bar-Ilan University, I study how mechanical strain reshapes magnetism in thin films, and I use that physics to build flexible planar Hall effect sensors with sub-200 pT resolution.
I am a Ph.D. candidate in the Klein Group at Bar-Ilan University. My field is flexible spintronics: what happens to magnetism in thin films when you bend them, and how to turn that physics into devices.
Strain is usually treated as a hazard that flexible electronics must survive. In my work it is also a knob. I grow Ta/permalloy heterostructures and elliptical planar Hall effect sensors on flexible substrates such as Kapton, bend them on custom 3D-printed stages, and track how strain reshapes magnetic anisotropy, magnetotransport, spin-orbit torques, film morphology, and noise.
The approach works. Our flexible sensors resolve magnetic fields below 200 pT/√Hz flat and below 400 pT/√Hz bent to a 10 mm radius, which at publication was the best resolution reported for a flexible magnetic sensor. Bending can flip the magnetization easy axis and more than double the anisotropy field, and the change is reversible. The same physics lets one device read magnetic field and strain at once.
Alongside research, I operate the Nano-Fabrication Center at BINA, supporting cleanroom work like sputtering, lithography, and thin-film deposition for research groups across the institute.
Sensors · 2024 · First author
Shrinking the ellipse short axis from 200 to 20 µm raises the anisotropy field from 12 to 120 Oe and extends the operating field range tenfold. The optimized 50 µm device reaches 7.7 nT/√Hz at 10 Hz.
Read at the journal
Ph.D. thesis · In progress
Bending a sensor to a 10 mm radius flips its magnetization easy axis and tunes the effective anisotropy field from 7.2 to 17.8 Oe, reversibly. The same physics lets one device read magnetic field and strain at once.
More on the research page
Applied Physics Letters · 2023
A planar Hall effect magnetometer on 25 µm Kapton: equivalent magnetic noise below 200 pT/√Hz flat and below 400 pT/√Hz bent to a 10 mm radius. At publication, the best resolution reported for a flexible magnetic sensor.
Read at the journalThree more manuscripts are under review, at Communications Physics, Measurement, and Array, and a fourth is submitted to IEEE Sensors Journal.
I'm glad to talk about research, collaborations, and measurement problems worth solving.