Terahertz (THz) time-domain spectroscopy (TDS) imaging is considered a nondestructive evaluation method for composite materials used for examining various defects of carbon fiber reinforced polymer (CFRP) composites and fire-retardant coatings in the reflective imaging modality. We demonstrate that hidden defects simulated by Teflon artificial inserts are imaged clearly in the perpendicular pol...

The first detections of gravitational waves, GW150914 and GW151226, were associated with the coalescence of stellar mass black holes, heralding the opening of an entirely new way to observe the Universe. Many decades of development were invested to achieve the sensitivities required to observe gravitational waves, with peak strains associated with GW150914 at the level of 10−21. Gravitational w...

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The finite width of the X-ray beam determined by the source and detector aperture limits the resolution of computed tomography (CT) images. Improved resolution can be obtained by reducing the width of the detector, but at a cost in dose utilization efficiency. We show that it is possible to improve the resolution in a CT image with a minimum cost in dose efficiency by varying the sensitivity of...

During the period covered by this report, we have successfully overcome several technical challenges for the device fabrication and made solid progress heading toward a functional optical modulator of 635 nm working wavelength. This is the wavelength of the commercially available DVD lasers. We explored the parameter space of the RF sputtering deposition and spin-coating process. Low absorption...

The Reflective Memory/Memory Channel @h&UC) system represents a modular bus-based system architecture that belongs to the class of distrtbuted shared memory systems. The RWMC system is characterized by an update consistenqv mechanism for shared data and egicient block transfers over the bus. This worh has tnw main goals. First, an extensive simulation anat’ysis using the firnch’onal Ru/MC simul...

Based on the development of thermal reflective coating materials at home and abroad, modified emulsified asphalt was selected as substrate material nano TiO 2 filler. Different filler dosage selected, optimal ratio obtained by analyzing pavement temperature data measured in field experiment. Finally, construction technology reflection is described detail.