Hubert J. Krenner, P. V. Santos, Christoph Westerhausen, Gustav Andersson, A. N. Cleland, H. Sellier, Shintaro Takada, Christopher Bäuerle, Daniel Wigger, T. Kühn, Paweł Machnikowski, Matthias Weiß, Galan Moody, A. Hernández‐Mínguez, S. Lazić, A. S. Kuznetsov, Matthias Küß, M. Albrecht, Mathias Weiler, Jorge Puebla, Yunyoung Hwang, Y. Otani, Krishna C. Balram, I-Tung Chen, Keji Lai, Mo Li, Geoff Nash, Emeline D. S. Nysten, Paromita Bhattacharjee, Himakshi Mishra, Parameswar Krishnan Iyer, Harshal B. Nemade, Abdelkrim Khelif, Sarah Benchabane, Gao Feng, Yabin Jin, Ausrine Bartasyte, Samuel Margueron, M. Marangolo, L. Thevenard, P. Rovillain, C. Gourdon, Sami Hage-Ali, Omar Elmazria, H. Schmidt, Leslie Y. Yeo, Lizebona August Ambattu, Jessie S. Jeon, Daesik Kwak, Joseph Rufo, Shujie Yang, Tony Jun Huang
Guided elastic waves are a truly cross-disciplinary key enabling technology. For more than five decades, surface acoustic wave (SAW) and bulk acoustic wave devices find widespread applications. Nowadays, different types of guided elastic waves cover the wide spectrum of applications spanning from quantum technologies to the life sciences, from controlling single excitations to macroscopic collective states in condensed matter. Six years after the first 2019 SAW roadmap, we believe it is time to make a step back and take a fresh look at the status of the field and its future challenges. Since the first roadmap in 2019, the spectrum clearly expanded and this new edition presents a current snapshot of the status of this vibrant field and prospects for potential future developments.