Jimmy Xu

Learn More
While traditional methods of designing FPGA applications have relied on schematics or HDL, much interest has been shown in C-to-FPGA tool flows that allow users to design FPGA hardware in C. We evaluate a C-to-FPGA tool flow (Impulse C) by analyzing the performance of three independent implementations of the Computed tomography (CT) filtered backprojection(More)
Persistent efforts have been made to achieve efficient light emission from silicon in the hope of extending the reach of silicon technology into fully integrated optoelectronic circuits, meeting the needs for high-bandwidth intrachip and interchip connects. Enhanced light emission from silicon is known to be theoretically possible, enabled mostly through(More)
The Cooper pairing mechanism that binds single electrons to form pairs in metals allows electrons to circumvent the exclusion principle and condense into a single superconducting or zero-resistance state. We present results from an amorphous bismuth film system patterned with a nanohoneycomb array of holes, which undergoes a thickness-tuned(More)
When utilizing reconfigurable hardware there are many applications that will require more memory than is available in a single hardware block. While FPGAs have tools and mechanisms for building logically larger memories, it often requires developer intervention on word-oriented devices like Massively Parallel Processor Arrays (MPPAs). We examine building(More)
The authors propose a new approach to THz power generation: the " nanoklystron. " Utilizing silicon micromachining techniques, the design and fabrication concept of a mono-lithic THz vacuum-tube reflex-klystron source is described. The nanoklystron employs a separately fabricated cathode structure composed of densely packed carbon nanotube field emitters(More)
We present a study of the first silicon microdisk resonators which are smaller than the free-space resonant wavelength in all spatial dimensions. Spectral details of whispering gallery modes with azimuthal mode number m = 4-7 are measured in microdisks with diameters between 1.35 and 1.89microm and are studied at wavelengths from 1.52 to 1.62microm. For the(More)
1 University of Washington Graduate School This is to certify that I have examined this copy of a master's thesis by Jimmy Xu and have found that it is complete and satisfactory in all respects, and that any and all revisions required by the final examining committee have been made. Date: 2 3 In presenting this thesis in partial fulfillment of the(More)
Electroluminescence at 1.28mum is observed in a nanopatterned silicon test structure that has been subjected to carbon implantation followed by solid-phase epitaxial regrowth for recrystalization. The sub-bandgap luminescence comes from a di-carbon complex known as 'G center'. Enrichment of silicon with carbon atoms has been achieved in a procedure(More)