Patterning colloids with microbubbles

Electrokinetic concentration and patterning of colloids with a scanning laser.

Optically-based lab-on-a-chip systems have the distinct advantage of being dynamically controlled in real time, providing reconfigurable operations that can be tuned to perform a variety of tasks. This manuscript demonstrates the concentration of liquid-suspended microparticles using a focused near-infrared laser (980 nm) and a parallel-plate electrode system. The parallel-plate electrodes cons...

Electrokinetic concentration, patterning, and sorting of colloids with thin film heaters.

Reliable and simple techniques for rapid assembly and patterning of colloid architectures advance the discovery and implementation of such nanomaterials. This work demonstrates rapid electrokinetic two-dimensional assembly of colloidal structures guided by the geometry of thin film heaters within a parallel-plate device. This system is designed to enable either independently addressable or mass...

Ultrasound with microbubbles

Conventional ultrasound has well known short comings in the detection and characterisation of focal liver lesions. A false negative rate of up to 30% has been quoted in the detection of liver metastases and its accuracy in the characterisation of focal liver lesions is poor compared to computed tomography (CT) and magnetic resonance (MR). Ultrasound microbubble contrast agents have redressed th...

Applications with microbubbles and proteins

Colloids with anisotropic interactions

The phase behavior of nanoand colloidal particles becomes increasingly complex as the particle shape and interactions are anisotropic. In addition, softness, deformability and other complicated interaction potentials e.g multipolar moments contribute to the complexity. As a result of the numerous variables that are often involved, the study of their collective behavior, such as the formation of...