Journal: Ultrasonics Sonochemistry

Article Title: Sonoluminescence from single cavitation bubbles near solid surfaces

doi: 10.1016/j.ultsonch.2026.107815

Figure Lengend Snippet: A schematic representation of the experimental setup, depicting crucial experiment parts. By using two spectrally separated cameras in the normal-view direction, the high-speed camera frame closest to the bubble collapse can be precisely overlaid with respective sonoluminescence emission (bottom right).

Article Snippet: For these measurements the ultra high-speed camera ( ) was combined with a 20 × magnification long working distance microscope objective (Edmund Optics, numerical aperture 0.42, resulting magnification 1 .

Techniques:

Journal: Ultrasonics Sonochemistry

Article Title: Sonoluminescence from single cavitation bubbles near solid surfaces

doi: 10.1016/j.ultsonch.2026.107815

Figure Lengend Snippet: (a) High-speed sequence of the first oscillation of a cavitation bubble generated close to a solid boundary in side view in the cavitation erosion regime. The timestamp t = 0 is defined as the frame closest to the bubble generation. Then, the bubble reaches maximum size after 46 μ s, and collapses in a toroidal shape at t = 95 μ s . The toroidal shape close to collapse is only visible in normal view, e.g., . The scale bar is 400 μ m . The whole video is presented in Supplementary Movie 1, and a higher frame rate video of a similar event in Supplementary Movie 2. (b) Normalized light intensity emitted during bubble collapse near a boundary as a function of the non-dimensional distance γ with added erosion rate measurements from for comparison. In inset, representation of the non-dimensional distance parameter γ = h / R max in the experiment, where h is the distance of the laser focus from the boundary, and R max the bubble radius at maximum expansion, measured perpendicular to the surface.

Article Snippet: For these measurements the ultra high-speed camera ( ) was combined with a 20 × magnification long working distance microscope objective (Edmund Optics, numerical aperture 0.42, resulting magnification 1 .

Techniques: Sequencing, Generated, Comparison

Journal: Ultrasonics Sonochemistry

Article Title: Sonoluminescence from single cavitation bubbles near solid surfaces

doi: 10.1016/j.ultsonch.2026.107815

Figure Lengend Snippet: Bubble collapses in close proximity of a quartz surface ( γ = 0 . 11 ± 0 . 01 ), leading to erosion and sonoluminescence. (a) High-speed camera frames leading to the bubble collapse with shock wave and sonoluminescence emission, as well as the separately detected positions of erosion marked with red arrows. The timing of the earlier illumination pulse in the frame closest to the collapse is a zero reference in relation to the ToA measurements (shown in overlay), denoted using a 0* sign. (b) and (c) High-speed camera frames closest to collapse for two different events at the same experimental setting, but with different outcomes compared to (a) due to significant statistical variations. Relative timings of collapses and sonoluminescence light time of arrival (ToA - from TPX3CAM, see text) are as following for each collapse spot: (a) Top: –30 ns & –35 ns; Bottom: –10 ns & 0 ns; (b) Top: 0 ns & –; Bottom: 40 ns & 40 ns; (c) Top: –60 ns & –50 ns; Bottom: 20 ns & –. The number pairs are always formed as “collapse timing & ToA”. The precision of collapse timing measurement is ± 10 ns , the precision of ToA ± 5 ns , and – signifies no data point available. The corresponding videos in normal-view (5 MHz framing rate) and side-view (144 kHz framing rate) are presented in Supplementary Movies 3–8.

Article Snippet: For these measurements the ultra high-speed camera ( ) was combined with a 20 × magnification long working distance microscope objective (Edmund Optics, numerical aperture 0.42, resulting magnification 1 .

Techniques:

Journal: Water Environment Research

Article Title: Enhanced Microplastic Flotation: Unraveling the Role of Bubble‐Chain Hydrodynamics via PIV Analysis

doi: 10.1002/wer.70374

Figure Lengend Snippet: Procedure for detecting and tracking PS particles from high‐speed imaging. (a) Raw image obtained from the PIV experiment, (b) PS particles identified using the LoG detector, and (c) Particle trajectories reconstructed using the Simple LAP Tracker algorithm.

Article Snippet: A high‐speed camera (MINI UX, Photron, USA) was positioned 150 mm above the needle tips and recorded at 2000 fps with a resolution of 1280 × 720 pixels, yielding a calibrated spatial resolution of 27.2 μm/pixel.

Techniques: Imaging

Journal: Water Environment Research

Article Title: Enhanced Microplastic Flotation: Unraveling the Role of Bubble‐Chain Hydrodynamics via PIV Analysis

doi: 10.1002/wer.70374

Figure Lengend Snippet: Time‐sequential high‐speed images illustrating the qualitative bubble–particle interaction mechanism induced by collision during the ascent of a single bubble. Frames (a) through (e) are arranged in chronological order with a constant time interval of Δt = 2.5 ms between consecutive frames. This figure was prepared with reference to the mechanism reported by Choi and Park and does not reproduce or reuse their data or results.

Article Snippet: A high‐speed camera (MINI UX, Photron, USA) was positioned 150 mm above the needle tips and recorded at 2000 fps with a resolution of 1280 × 720 pixels, yielding a calibrated spatial resolution of 27.2 μm/pixel.

Techniques:

Journal: Science Advances

Article Title: Abrupt eruptive instability of ice adhered to solid surfaces

doi: 10.1126/sciadv.adz8663

Figure Lengend Snippet: ( A ) Schematic of illustrating the cooling-induced ice eruptive fracture on solid substrate. ( B ) High-speed camera snapshots of the ice ejection on hydrophilic silicon wafer substrate when cooled to −122°C. ( C ) High-speed camera snapshots of the eruptive fracture of the ice and the substrate disintegration at −133°C. ( D ) The ice bound to the light-weight substrate leapt. ( E ) Evolution of calculated mechanical energy with fracture temperature for varying formation temperature of ice. Inset images display bound leap and motionless fractures at different temperatures, corresponding to ice with different formation temperature, respectively. The critical temperature T c = −93° ± 3°C is highlighted. Time τ = 0 ms in (B) to (D) denotes the onset of crack formation. The cooling rate is set as −0.5°C s −1 . Freezing water volume: 20 μl. Scale bars, 5 mm [(B) to (E)].

Article Snippet: The fracture dynamics of the ice plate was observed with a polarized microscope (LVDIA-N, Nikon) in conjunction with a high-speed camera (Phantom v7.3) and a digital camera (DS-Ri2, Nikon).

Techniques:

Journal: Science Advances

Article Title: Abrupt eruptive instability of ice adhered to solid surfaces

doi: 10.1126/sciadv.adz8663

Figure Lengend Snippet: ( A ) Material distribution according to their TECs and Young’s modulus values . Adapted with permission from , copyright 2011, Elsevier. The color dots show the occurrence of ice eruptive fracture on the corresponding materials. Insets: High-speed camera snapshots of bound leap of ice with aluminum alloy, sapphire, and quartz substrate. ( B ) Design of the automatic detachment of ice using substrate deformation upon temperature variation. ( C ) Spontaneous detachment of an ice block (volume: 100 ml) from a bimetallic strip upon cooling to −53°C. Scale bars, 1 cm (A) and 5 cm (C).

Article Snippet: The fracture dynamics of the ice plate was observed with a polarized microscope (LVDIA-N, Nikon) in conjunction with a high-speed camera (Phantom v7.3) and a digital camera (DS-Ri2, Nikon).

Techniques: Blocking Assay, Stripping Membranes

Journal: Ultrasonics Sonochemistry

Article Title: Role of gas nuclei in ultrasonic atomization in acoustic fountains: mechanisms and experimental evidence

doi: 10.1016/j.ultsonch.2026.107796

Figure Lengend Snippet: Experimental setup for visualizing microbubbles in water and microdroplets in air. The setup includes a 1.7 MHz ultrasonic transducer, capillary tubes, a microbubble syringe, sparkling water, and two high-speed cameras for capturing dynamic processes.

Article Snippet: Two high-speed cameras (Photron Fastcam SA-1 and Photron Fastcam SA-Z, Photron Ltd., Japan) equipped with various macro lenses and multiple light sources were used to capture dynamic processes, including the generation, distribution, and motion of microbubbles (nuclei), morphological evolution of the acoustic fountain, jet splashing, and atomized droplet formation.

Techniques:

Journal: Ultrasonics Sonochemistry

Article Title: Role of gas nuclei in ultrasonic atomization in acoustic fountains: mechanisms and experimental evidence

doi: 10.1016/j.ultsonch.2026.107796

Figure Lengend Snippet: Microbubbles in ultrasonic atomization. (A) Coexistence of microbubbles and microdroplets in ultrasonic atomization; (B) Microbubble generation process captured by high-speed photography; (C) Quantitative analysis of microbubble number versus time, showing a lag phase followed by a steady increase.

Article Snippet: Two high-speed cameras (Photron Fastcam SA-1 and Photron Fastcam SA-Z, Photron Ltd., Japan) equipped with various macro lenses and multiple light sources were used to capture dynamic processes, including the generation, distribution, and motion of microbubbles (nuclei), morphological evolution of the acoustic fountain, jet splashing, and atomized droplet formation.

Techniques: