Laser Pointer and Webcam Set Up (IMAGE) Optica Caption A laser pointer (top right) illuminates a microfluidic flow phantom (bottom center) and the speckle pattern is imaged onto a webcam (top center) to enable calculation of flow images. Credit Andrew Dunn, University of Texas - Austin Usage Restrictions Must include caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.