Ultrasound is the most commonly used abdominal imaging modality. The addition of color and spectral Doppler imaging has been particularly beneficial. When ultrasound findings are nonspecific, however, patients are generally referred to CT or MRI. A contrast-enhanced ultrasound examination could alleviate the need for these more expensive imaging investigations, and a number of micro-bubble-base...

A pilot experiment was conducted by NSUOC and DLR in April-June 2008 in the Straits of Florida near Port Everglades, Florida in order to study the dynamics of far wakes of ships. In this experiment, a small boat with downward-looking sonar made “snake-like” sections through wakes of ships of opportunity during the TerraSAR-X overpasses. The ship identity and its parameters (length, speed, cours...

Heat dissipation in high-heat flux micro-devices has become a pressing issue. One of the most effective methods for removing high heat load is boiling transfer microchannels. A novel approach to flow pattern and recognition microchannels provided by combination image machine learning techniques. The support vector method texture characteristics successfully recognizes patterns. To determine bub...

Predicting the dynamics of an electrically charged drop impacting a solid surface is great importance in various industrial applications such as spray coating and painting. An decelerates immediately before touch-down by lubrication pressure intervening air. The build-up forms dimple resulting entrapment bubbles under drop. We measured visualized bubble formations using high-speed interferometr...

Whereas bubble growth out of gas-oversatured solutions has been quite well understood, including the formation and stability of surface nanobubbles, this is not the case for bubbles forming on catalytic surfaces due to catalytic reactions, though it has important implications for gas evolution reactions and self-propulsion of micro/nanomotors fueled by bubble release. In this work we have fille...

During the process of bubbles interacting with particles, the bubble movement velocity, jetting phenomenon, topological deformation, and even properties of flow field may demonstrate novel variation. To investigate these characteristics, the lattice Boltzmann method (LBM) which is based on kinetic theory is adopted to build up the three dimensional coupled model. The gas-liquid interface with l...

Forced convection boiling in microchannels is studied experimentally under the uniform heat flux boundary condition. Several microchannel heat sinks with integrated temperature sensors, spanning two orders of magnitude in height 5–500 μm, have been fabricated with designed nucleation sites on the bottom surfaces. The microchannels are capped by a glass wafer to monitor bubble activity using vid...