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Personalized Modeling and Detection of Moments of Cannabis Use in Free-Living Environments

https://doi.org/10.1109/BSN58485.2023.10331481

Azghan, Reza Rahimi ; Glodosky, Nicholas C ; Sah, Ramesh Kumar ; Cuttler, Carrie ; McLaughlin, Ryan ; Cleveland, Michael J ; Ghasemzadeh, Hassan ( October 2023 , IEEE)
Observation of exceptional points in magnonic parity-time symmetry devices

https://doi.org/10.1126/sciadv.aax9144

Liu, Haoliang ; Sun, Dali ; Zhang, Chuang ; Groesbeck, Matthew ; Mclaughlin, Ryan ; Vardeny, Z. Valy ( November 2019 , Science Advances)

Non-Hermitian Hamiltonians may still have real eigenvalues, provided that a combined parity-time (ƤƮ) symmetry exists. The prospect of ƤƮ symmetry has been explored in several physical systems such as photonics, acoustics, and electronics. The eigenvalues in these systems undergo a transition from real to complex at exceptional points (EPs), where the ƤƮ symmetry is broken. Here, we demonstrate the existence of EP in magnonic devices composed of two coupled magnets with different magnon losses. The eigenfrequencies and damping rates change from crossing to anti-crossing at the EP when the coupling strength increases. The magnonic dispersion includes a strong “acoustic-like” mode and a weak “optic-like” mode. Moreover, upon microwave radiation, the ƤƮ magnonic devices act as magnon resonant cavity with unique response compared to conventional magnonic systems.
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Triplet exciton fine structure in Pt-rich polymers studied by circularly polarized emission under high magnetic field

https://doi.org/10.1103/PhysRevB.98.155205

Zhang, Chuang ; Sun, Dali ; McLaughlin, Ryan ; Semenov, Dmitry ; McGill, Stephen ; Yu, Zhi-Gang ; Ehrenfreund, Eitan ; Vardeny, Zeev Valy ( October 2018 , Physical Review B)
Optical detection of transverse spin-Seebeck effect in permalloy film using Sagnac interferometer microscopy

https://doi.org/10.1103/PhysRevB.95.180401

McLaughlin, Ryan ; Sun, Dali ; Zhang, Chuang ; Groesbeck, Matthew ; Vardeny, Z. Valy ( May 2017 , Physical Review B)
Organic-based magnon spintronics

https://doi.org/10.1038/s41563-018-0035-3

Liu, Haoliang ; Zhang, Chuang ; Malissa, Hans ; Groesbeck, Matthew ; Kavand, Marzieh ; McLaughlin, Ryan ; Jamali, Shirin ; Hao, Jingjun ; Sun, Dali ; Davidson, Royce A. ; et al ( April 2018 , Nature Materials)

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