The detectivity D* limits of YBa(2)Cu(3)O(7-x) bolometers on 0.05-cm-thick crystalline substrates are investigated, and a method to increase D* to greater than 10(9) (cm Hz(1/2))/W at a 20-microm wavelength is proposed. Because the response increases proportionally with the bias current I(b), whereas the noise near T(c) (the transition or critical temperature) of our MgO and SrTiO(3) substrate ...

Substrate coupling in integrated circuits is the process whereby parasitic current flow in the substrate electrically couples devices in different parts of the circuit. Higher levels of integration and higher frequencies of operation make the coupling more pronounced in modern circuit realizations. High levels of integration are desirable in several applications for reducing the overall power d...

Thermal noise in amorphous coatings is a limitation for wide range of precision experiments such as gravitational-wave detectors (GWDs). Mirrors GWDs are composed multiple thin layers dielectric materials deposited on substrate: the stack made with high-refractive index interleaved low-refractive index. The goal to obtain high reflectivity and low thermal noise. In this paper we report optical ...

Classical substrate noise analysis considers the silicon resistivity of an integrated circuit only as doping dependent besides neglecting diffusion currents as well. In power circuits minority carriers are injected into the substrate and propagate by drift–diffusion. In this case the conductivity of the substrate is spatially modulated and this effect is particularly important in high injection...

Traditional wired interconnects in multicore multichip (MCMC) systems can be replaced with chip-integrated switched beam antenna arrays to provide reconfigurable chip-to-chip communications. By simply switching the directive beams of arrays, chips made dynamically communicate their surrounding neighbors. Radiation from unintended direction, however, causes interference when multiple pairs are s...

background: in dental practical classes, the acoustic environment is characterized by high noise levels in relation to other teaching areas. the aims of this study were to measure noise levels produced during the different dental learning clinics, by equipments used in dental learning areas under different working conditions and by used and brand new handpieces under different working condition...

The paper analyzes the image quality in augmented reality display based on holographic waveguides. Brightness, brightness non-uniformity, noise, etc., depend parameters of waveguide substrate, configuration, and relief shape diffraction optical elements. optimal structure waveguides obtained by analog holography has been studied. presented recommendations to achieve best are experimental result...

this paper tries to determine efficiency of noise control method using fuzzy logic and based on collected data. from among various methods of noise control in workplace, sex methods (enclosure, installing noise absorber, enclosure and absorber, active, and administrative control, and personal protective equipment) were typically selected based on experts' judgment. for each of selected control ...