| Title | Acoustic Wave Focusing Lens at Radio Frequencies in Thin-Film Lithium Niobate |
| Publication Type | Conference Paper |
| Year of Publication | 2022 |
| Authors | Kramer, Jack, Lee, Daehun, Cho, Sinwoo, Jahanbani, Shahin, Lai, Keji, Lu, Ruochen |
| Conference Name | 2022 IEEE MTT-S International Conference on Microwave Acoustics and Mechanics (IC-MAM) |
| Date Published | jul |
| Keywords | acoustic coupling, Acoustic wave focusing, Focusing, Human Behavior, Lithium niobate, Micromechanical devices, Optical coupling, Optical design, Piezoelectric devices, pubcrawl, Radio frequency, resilience, Resiliency, Scalability, SH-SAW, Silicon carbide, thin-film devices |
| Abstract | Expanding techniques for chip-scale acoustic wave focusing would open doors for advancements in signal processing and quantum electromechanical microsystems. In this paper, we present a method for acoustic wave focusing and wavefront shaping at radio frequencies (RF), validated with thin-film lithium niobite on a low-loss and high coupling silicon carbide (LiNbO3-on-SiC) testbed. By depositing a metal layer, we can mitigate the piezoelectric stiffening effect, and reduce the acoustic wave speed in a patterned area. Employing a design analogous to geometric optical systems, efficient acoustic wave focusing is experimentally observed. With more development, this technique could be employed in emerging acoustic microsystems. |
| DOI | 10.1109/IC-MAM55200.2022.9855343 |
| Citation Key | kramer_acoustic_2022 |
Acoustic Wave Focusing Lens at Radio Frequencies in Thin-Film Lithium Niobate