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

   https://doi.org/10.1103/PhysRevB.94.014436  

   Gowtham, P. G. ; Labanowski, D. ; Salahuddin, S. ( July 2016 , Physical Review B)
2. Conformable surface acoustic wave biosensor for E-coli fabricated on PEN plastic film

   https://doi.org/10.1016/j.bios.2020.112164  

   Lamanna, Leonardo ; Rizzi, Francesco ; Bhethanabotla, Venkat R. ; De Vittorio, Massimo ( September 2020 , Biosensors and Bioelectronics)

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3. Electrically Tunable Surface Acoustic Wave Propagation at MHz Frequencies Based on Carbon Nanotube Thin‐Film Transistors

   https://doi.org/10.1002/adfm.202010744  

   Shen, Chen ; Lu, Shiheng ; Tian, Zhenhua ; Yang, Shujie ; Cardenas, Jorge A. ; Li, Junfei ; Peng, Xiuyuan ; Huang, Tony Jun ; Franklin, Aaron D. ; Cummer, Steven A. ( February 2021 , Advanced Functional Materials)

   Surface acoustic waves (SAWs) that propagate on the surface of a solid at MHz frequencies are widely used in sensing, communication, and acoustic tweezers. However, their properties are difficult to be tuned electrically, and current devices suffer from complicated configurations, complicated tuning mechanisms, or small ranges of tunability. Here a structure featuring a thin‐film transistor configuration is proposed to achieve electrically tunable SAW propagation based on conductivity tuning. When a DC gate voltage is applied, the on‐site conductivity of the piezoelectric substrate is modulated, which leads to velocity and amplitude tuning of SAWs. The use of carbon nanotubes and crystalline nanocellulose as the channel and gate materials results in high tuning capacity and low gate voltage requirement. The tunability is manifested by a 2.5% phase velocity tuning and near 10 dB on/off switching of the signals. The proposed device holds the potential for the next generation SAW‐based devices.

    

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4. Rigorous asymptotics of traveling-wave solutions to the thin-film equation and Tanner’s law

   https://doi.org/10.1088/0951-7715/29/9/2497  

   Giacomelli, Lorenzo ; Gnann, Manuel V ; Otto, Felix ( September 2016 , Nonlinearity)
5. A Brillouin light scattering study of the spin-wave magnetic field dependence in a magnetic hybrid system made of an artificial spin-ice structure and a film underlayer

   https://doi.org/10.1063/5.0140866  

   Montoncello, F. ; Kaffash, M. T. ; Carfagno, H. ; Doty, M. F. ; Gubbiotti, G. ; Jungfleisch, M. B. ( February 2023 , Journal of Applied Physics)

   We present a combined Brillouin light scattering (BLS) and micromagnetic simulation investigation of the magnetic-field-dependent spin-wave spectra in a hybrid structure made of permalloy (NiFe) artificial spin-ice (ASI) systems, composed of stadium-shaped nanoislands, deposited on the top of an unpatterned permalloy film with a nonmagnetic spacer layer. The thermal spin-wave spectra were recorded by BLS as a function of the magnetic field applied along the symmetry direction of the ASI sample. Magneto-optic Kerr effect magnetometry was used to measure the hysteresis loops in the same orientation as the BLS measurements. The frequency and the intensity of several spin-wave modes detected by BLS were measured as a function of the applied magnetic field. Micromagnetic simulations enabled us to identify the modes in terms of their frequency and spatial symmetry and to extract information about the existence and strength of the dynamic coupling, relevant only to a few modes of a given hybrid system. Using this approach, we suggest a way to understand if the dynamic coupling between ASI and film modes is present or not, with interesting implications for the development of future three-dimensional magnonic applications and devices.

    

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