Welcome to ULTRASONICS-2025: Advancing Innovation in Ultrasonic Applications On behalf of the Organizing Committee, it is our great pleasure to invite you to Caparica (Lisbon, Portugal) for the 7th International Conference on Ultrasonic-Based Applications: From Analysis to Synthesis (ULTRASONICS-2025), taking place in June 2025. ULTRASONICS-2025 will serve as a premier platform for researchers, scientists, and industry professionals to explore the latest breakthroughs and advancements in the field of ultrasonics. From fundamental principles to cutting-edge applications, this conference will cover a broad spectrum of topics, including sonochemistry, material synthesis, medical diagnostics, industrial processing, and beyond. With a carefully curated scientific program, featuring distinguished keynote speakers, insightful presentations, and dynamic discussions, we are confident that this event will inspire new ideas, foster collaborations, and shape the future of ultrasonics. Set against the backdrop of the stunning coastal town of Caparica, attendees will have the unique opportunity to engage with leading experts, exchange innovative research, and experience Portugal’s renowned hospitality and culture. We warmly encourage you to join us at ULTRASONICS-2025, contribute to this thriving scientific community, and be part of one of the most significant events in the ultrasonics field in 2025. We look forward to welcoming you to Portugal in June 2025 for an unforgettable experience!