Research videos

Flow and imaging in motion.

High-speed fluid dynamics, laser-induced phenomena, multiphase simulation, and volumetric OCT imaging of industrial and biological structures.

PNAS supplementary simulation | 2026

Multiphase simulation at the predicted breakdown site

Movie S5 shows the first few microseconds of a representative compressible two-phase simulation initialized at the optically predicted laser-induced breakdown site.

Optics Express supplementary media | 2024

3D OCT visualizations

Visualizations 2-6 demonstrate stable volumetric imaging of industrial structures, spatial-frequency profiles, and biological surface patterns using the BEMF-triggered multi-MHz endoscopic OCT system.

Visualization 2

3D OCT visualization of a weld seam

A volumetric reconstruction revealing weld-seam geometry and surface detail, demonstrating potential for industrial inspection.

Official media record

Visualization 3

3D OCT visualization of a threaded structure

A rotating volumetric view that resolves the fine geometry of a threaded structure.

Official media record

Visualization 4

OCT imaging of a constant-frequency profile

A three-dimensional reconstruction of a regular profile with a consistent spatial pattern.

Official media record

Visualization 5

OCT imaging of a variable-frequency profile

A volumetric view capturing structural variations across a changing spatial-frequency pattern.

Official media record

Visualization 6

3D OCT visualization of fingerprints

A volumetric biological-imaging example revealing fingerprint ridge patterns and surface structure.

Official media record

APS Gallery of Fluid Motion

High-speed flow visualizations

Shock-driven breakup, vortex-droplet interaction, aerodynamic atomization, and laser-induced fragmentation recorded through high-speed optical diagnostics.

2021APS Gallery of Fluid Motion

Mechanism of shock-induced aerobreakup of a droplet

High-speed shadowgraph and Schlieren visualization of wave interaction, deformation, and the transition between droplet-breakup regimes.

Shubham Sharma, Awanish Pratap Singh, Srinivasa Rao S, Aloke Kumar, Saptarshi Basu

2020APS Gallery of Fluid Motion

Aerodynamic breakup of droplets in a shock-induced flow

A first-author visual study of shock-wave interaction, airflow-driven deformation, mist stripping, and breakup across Weber-number regimes.

Awanish Pratap Singh, Shubham Sharma, Srinivas Rao, Saptarshi Basu

2020APS Gallery of Fluid Motion

On the dynamics of vortex droplet co-axial interaction

High-speed PIV, planar laser-induced fluorescence, and shadowgraphy reveal coupled vortex-ring and droplet dynamics.

Shubham Sharma, Awanish Pratap Singh, Saptarshi Basu

2020APS Gallery of Fluid Motion

Atomization of levitated droplets via laser-induced breakdown

A 50,000-frames-per-second view of nanosecond laser-induced deformation, propulsion, and fragmentation of acoustically levitated droplets.

D. Chaitanya Kumar Rao, Awanish Pratap Singh, Saptarshi Basu

Videos are embedded from the official APS records. Each work is licensed under CC BY-NC 4.0; author credits and source records are linked above.