Observation of Expansion/Contraction Process of Bubbles in PVA Gel

User Benefits

- The HPV-X3, with a maximum framerate of 20Mfps, is suitable for observation of high-speed phenomena such as cavitation. - The HPV-X3 provides 3 times higher resolution than the conventional device, enabling detailed observation. - Since the image sensor of HPV-X3 is burst-type, the HPV-X3 enables image acquisition with constant resolution, regardless of the recording speed.

Introduction

When laser-induced shock waves and cavitation are applied in the medical field, it is important to understand the actual phenomena. Here, a polyvinyl alcohol (PVA) gel was irradiated with a laser, and the condition of the shock wave and cavitation generated upon laser light condensation (LC) was observed. PVA gel has high biocompatibility and is known as a promising biomaterial which is suitable for tissue mimicking. In this experiment, the newly-developed Hyper Vision HPV-X3 high-speed video camera was used to observe bubble expansion/contraction in PVA gel. In comparison with the conventional device, the recording speed (framerate) of the HPV-X3 is 2 times faster. The new HPV-X3 also provides 3 times higher resolution, supporting more detailed observation.

February 17, 2026 GMT