We propose two single-wavelength notch filters and one dual-wavelength (480 620 nm) filter to enhance image contrast. The stack structure of the was designed as (Ta2O5/SiO2)4Ta2O5 in Essential Macleod thin film simulation software. Dual-electron-beam evaporation with ion beam-assisted deposition used prepare optical interference different center wavelengths. A multilayer a wavelength nm deposit...

The study concerns ways to describe filtration efficiency and gas flow resistance while particles are deposited in fibrous respiratory protective filters under conditions characteristic for their use. The performance of fibrous filter materials of varied structure and electrostatic properties was studied, using polydisperse coarse-grained aerosols and submicron aerosols of sodium chloride. Evid...

Metal sputter deposition processes for semiconductor manufacturing are characterized by a decrease in deposition rate from run to run as the sputter target degrades. The goal is to maintain a desired deposition thickness from wafer to wafer and lot to lot. Run by run (RbR) model-based process control (MBPC) has been applied to metal sputter deposition processes at Texas Instruments. RbR MBPC, b...

The deposition of the instantaneously released sediment into a gravel matrix and the hydraulic resistance induced by the rapid siltation are investigated herein. The experimental results reveal that the depositional patterns of the sediment are governed by the gravel-sediment size ratio, the amount of sediment released, and the seepage flowrate. The observations also indicate that the stable st...

The pneumatic conveying process of fine particles through filters was studied by CFD-DEM simulation method. porous media model and structure were used to simulate the airflow state blocking effect when they flowed filter. Under different particle feed rates initial velocities, effects plugging rate settling velocity in pleated analyzed, deposition height on fluid zone studied. results showed th...

OBJECTIVES This study was carried out to detect vulnerable coronary plaques by color fluorescent angioscopy. BACKGROUND Collagen fibers (CFs) mainly provide mechanical support to coronary plaques. Oxidized low-density lipoprotein (Ox-LDL) induces macrophage proliferation, which in turn destroy CFs while accumulating lipids. As such, demonstration of the absence of CFs, deposition of lipids, a...

In our work, a monolithic integration of RF filter SAW, on a semiconductor substrate such us Si or GaAs is highly desirable to miniaturize the outer dimensions and introduce the new functionalities of the cellular phones. But, direct monolithic integration of SAW filters is impossible with Si which is non piezoelectric and difficult with GaAs which is weakly piezoelectric. One alternative is th...

an air filter is a significant element of any mechanical ventilation system. however, the importance and performance evaluation of air filters have not been well publicized and related scientific reports are scarce. in this study, a transportable, off-line, air filter-testing unit (the unit) was designed and utilized to simulate the filter housing of a mechanical ventilation system. the unit wa...