Dominic Labanowski

Thermally Programmable 90° Easy–Axis Rotation in Graded FeGa–B/LiNbO 3 Magnetoelastic Heterostructures With a Tunable Crossover

Abhishek Ghatge, Pankhuri Gupta, Anup Kumar Bera, U Ganguly et autres

ABSTRACT This work demonstrates giant Temperature Controlled Magnetic Anisotropy (TCMA) in compositionally graded FeGa–B thin films integrated on YZ –cut LiNbO 3 (LNO) substrates. By programming the boron concentration gradient during DC magnetron sputtering, we engineered two inverted architectures with comparable overall …

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Giant Non-Monotonic Temperature-Controlled Magnetic Anisotropy in FeGa-B/LiNbO 3 Magnetoelastic Heterostructures

Kousik Malai, Pankhuri Gupta, Anup Kumar Bera, Abhishek Ghatge et autres

Thermally reconfigurable magnetic anisotropy offers a compelling route to adaptive spintronic and microwave functionalities. Here, we report a giant, non-monotonic, temperature-controlled magnetic anisotropy (TCMA) in FeGa-B thin films deposited on YZ- cut LiNbO 3 (LNO) substrates, reaching up to ∼ 12% K …

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Silent Speech Recognition with Wearable Magnetometers

Debadatta Dash, Evan Kittle, Isabel Gerrard, Richárd Csáky et autres

Abstract Next-generation human-computer interaction (HCI) is moving towards more seamless, intuitive, and personal modes of communication, redefining how we interact with technology and one another. Within this landscape, silent speech recognition (SSR) offers a powerful new interaction paradigm, enabling hands-free, private interaction …

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Generalizable gesture recognition using magnetomyography

Richy Yun, Richárd Csáky, Debadatta Dash, Isabel Gerrard et autres

Abstract The progression of human-computer interfaces into immersive and touchless realities requires new ways of interacting with machines that are correspondingly intuitive and seamless. Among these are gesture-based systems that use natural hand movements to interact with and control digital devices. Today, …

Magnetomyography: A novel modality for non-invasive muscle sensing

Richy Yun, Gabriel González, Isabel Gerrard, Richárd Csáky et autres

Abstract The measurement of magnetic fields generated by skeletal muscle activity, called magnetomyography (MMG), has seen renewed interest from the academic community in recent years. Although studies have demonstrated complex models of MMG and experiments classifying between different movements using MMG, there …

On and Off-Resonance Spin Wave/Surface Acoustic Wave Coupling Measured Using Brillouin Light Scattering

Katherine E. Nygren, Joseph D. Schneider, Qianchang Wang, Dominic Labanowski et autres

Voltage-driven, local, and efficient excitation of nitrogen-vacancy centers in diamond.

Dominic Labanowski, Vidya Praveen Bhallamudi, Qiaochu Guo, Carola M. Purser et autres

Magnetic sensing technology has found widespread application in a diverse set of industries including transportation, medicine, and resource exploration. These uses often require highly sensitive instruments to measure the extremely small magnetic fields involved, relying on difficult-to-integrate superconducting quantum interference devices and …

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Effect of magnetoelastic film thickness on power absorption in acoustically driven ferromagnetic resonance

Dominic Labanowski, Adi Jung, Sayeef Salahuddin

Surface acoustic waves (SAWs) traveling on the surface of a piezoelectric substrate are capable of exciting magnetoelastic ferromagnets into resonance. In this work, we explore the effects of magnetoelastic film thickness on the coupling of SAWs into such magnetic thin films. We …

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Spin wave generation by surface acoustic waves

Xu Li, Dominic Labanowski, Sayeef Salahuddin, Christopher S. Lynch

Surface acoustic waves (SAW) on piezoelectric substrates can excite spin wave resonance (SWR) in magnetostrictive films through magnetoelastic coupling. This acoustically driven SWR enables the excitation of a single spin wave mode with an in-plane wave vector k matched to the magnetoelastic …

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Mechanical back-action of a spin-wave resonance in a magnetoelastic thin film on a surface acoustic wave

P. G. Gowtham, Dominic Labanowski, Sayeef Salahuddin

Surface acoustic waves (SAWs) traveling on the surface of a piezoelectric crystal can, through the magnetoelastic interaction, excite traveling spin-wave resonance in a magnetic film deposited on the substrate. This spin-wave resonance in the magnetic film creates a time-dynamic surface stress of …

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Power absorption in acoustically driven ferromagnetic resonance

Dominic Labanowski, Adi Jung, Sayeef Salahuddin

Surface acoustic waves (SAWs) have recently been used to drive ferromagnetic resonance by exploiting the coupling between strain and magnetization in magnetostrictive materials in a technique called acoustically driven ferromagnetic resonance (ADFMR). In this work, we quantitatively examine the power absorbed by …

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Switching of perpendicularly polarized nanomagnets with spin orbit torque without an external magnetic field by engineering a tilted anisotropy

OukJae Lee, Debanjan Bhowmik, Dominic Labanowski, Jeongmin Hong et autres

Spin orbit torque (SOT) provides an efficient way to significantly reduce the current required for switching nanomagnets. However, SOT generated by an in-plane current cannot deterministically switch a perpendicularly polarized magnet due to symmetry reasons. On the other hand, perpendicularly polarized magnets …

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