Traumatic Brain Injury (TBI) occurs when an external force injures the brain. While clinical outcomes of TBI can vary widely in severity, few mechanisms of neurodegeneration following TBI have been identified for treatment. We propose a model for studying TBI using laser-induced shockwaves (LISs). An optical system was developed that allows single cells to be studied in response to LISs. Our system utilizes an optically-coupled force measurement component that allows for the visualization of shockwave dynamics. Here, the force measurement system is characterized by imaging stages over the period of violent expansion and collapse of microbubbles responsible for shockwave generation.
We present SiCloud (Silicon Photonics Cloud), the first free, instructional web-based research and education tool for
silicon photonics. SiCloud’s vision is to provide a host of instructional and research web-based tools. Such interactive
learning tools enhance traditional teaching methods by extending access to a very large audience, resulting in very high
impact. Interactive tools engage the brain in a way different from merely reading, and so enhance and reinforce the
learning experience. Understanding silicon photonics is challenging as the topic involves a wide range of disciplines,
including material science, semiconductor physics, electronics and waveguide optics. This web-based calculator is an
interactive analysis tool for optical properties of silicon and related material (SiO2, Si3N4, Al2O3, etc.). It is designed to
be a one stop resource for students, researchers and design engineers. The first and most basic aspect of Silicon
Photonics is the Material Parameters, which provides the foundation for the Device, Sub-System and System levels.
SiCloud includes the common dielectrics and semiconductors for waveguide core, cladding, and photodetection, as well
as metals for electrical contacts. SiCloud is a work in progress and its capability is being expanded. SiCloud is being
developed at UCLA with funding from the National Science Foundation’s Center for Integrated Access Networks
(CIAN) Engineering Research Center.