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Solid State Drives (SSDs) are emerging as attractive alternatives to traditional HDDs due to there reduced power consumption and potential for increased performance. SSDs have the potential to improve the performance of both Checkpoint Restart (CPR) and the Metadata Server (MDS) for high performance File Systems, e.g., Lustre. However, the write performance of SSDs is relatively poor (compared to ...

Energy consumption is quickly becoming one of the primary bottlenecks of compute clusters and supercomputers. The DOE is a primary developer and consumer of these power hungry supercomputers, however smaller cluster machines are also widely used through other government agencies and industries. Yet, there are few power profiling tools that allow application developers transparent insight into the ...

Solid state lighting is being promoted as the ultimate lamps of future. Though the internal quantum efficiency of OLED devices is almost 100%, external efficiency is a mere 36% mainly because of poor light out-coupling (~40%) from the device. Improvement in light out-coupling to >70% and further reducing the manufacturing cost will rapidly accelerate the commercialization of the OLED technology. T ...

The fabrication of high-quality ultra thin (~20 micron) diamond crystals targets for 9 GeV highly polarized photon beams is an outstanding challenge. Current state of the art polishing/thinning techniques are not successful in thinning single crystal diamond to such dimension because of its extreme hardness and chemical inertness. These techniques create significant stresses surface and sub-surfac ...

Providing a reliable, clean and economical energy source is a priority of the US government. The challenge is to use coal, a secured and economical energy source, to produce clean hydrogen fuel to support domestic and global green economy with near-zero emission. Conventional separation technology and even developmental technology do not satisfy all of the requirements for hydrogen production from ...

Currently the commercially available technologies for H2 separation such as pressure swing adsorption and cryogenic distillation are very energy intensive. Membrane technologies can be very energy efficient; but for high selective membranes low flux and high cost are the major challenges that frustrate commercialization. Recently, cermet has shown promise because of less precious metal usage and m ...

Higher operating temperature for the gas turbine engine is needed for enhanced efficiency, lower emission and increased performance goal. The current state-of-the-art thermal barrier coatings (TBCs) are not adequate to provide the needed protection for the metallic components of the turbine engine operating at higher TBC surface temperature (>1300

Ziva Corporation in collaboration with UCSB will assess the feasibility of developing a directly modulated polarization switching laser based on the Vertical Cavity Surface Emitting Laser (VCSEL) geometry with a 3dB frequency of at least 10 GHz. This will be a major breakthrough in the ability to cost effectively fabricate directly modulated lasers (even in 2-D arrays) with polarization diversity ...

We propose to develop a computational model of leadership designed to capture complex variables including cultural differences in leadership requirements along with task differences, primarily ill-defined goals, which pose leadership challenges. Rather than avoiding these kinds of complexity and developing a computational model that is unlikely to scale up, we believe there is more to be gained b ...

Despite significant advancement in PV technology and efficiency, qualification testing and market penetration, actual performance in the field of operation under a myriad of environemental constraints remains an important topic. PV arrays are subject to degradation mechanisms that can significantly impact power production capability. For revenue-critical PV arrays, detection of underperformance an ...