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Intersubband transition based multiple junction quantum cascade thermophotovoltaic device has been proposed using AlN/GaN heterostructure. Temperature effect on the dark current has been investigated numerically to analyze its effect on the performance of thermophotovoltaic structure.
Group-III Nitride system has been analyzed numerically to design multiple quantum well heterostructure. Transport characteristics through tunneling phenomena based on bound-to-continuum intersubband transition in quantum well is investigated. Topology of photodetector has been introduced.
An intersubband transition based quantum cascade structure has been presented for wideband photovoltaic energy conversion. The structure is designed on group III-nitride material system so that the large conduction band offset of the material system can be utilized to absorb light over a broad energy range, and the ultra-fast electron scattering rates can be utilized to collect the photo-excited carriers...
The total amount of information stored on disks has increased tremendously in recent years with data storage, sharing and backup becoming more important than ever. The demand for storage has not only changed in size, but also in speed, reliability and security. These requirements create a big challenge for storage system architects who aim for a one system fits all design. Storage policies like backup...
The total amount of stored information on disks has increased tremendously in recent years. With storage devices getting cheaper and government agencies requiring strict data retention policies, it is clear that this trend will continue for several years to come. This progression creates a challenge for system administrators who must determine several aspects of storage policy with respect to provisioning,...
In this paper we present a study of I/O access patterns of scientific and general applications on a parallel file system. Understanding I/O access patterns is an essential condition to effectively designing a file system. Supercomputing applications running on these parallel systems make extensive use of parallel file systems taking advantage of faster data access by requesting information from multiple...
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