نتایج جستجو برای: nano switches
تعداد نتایج: 68068 فیلتر نتایج به سال:
Epoxy resin is extensively used in gas insulated switches as a renewable energy coating due to its exceptional insulation, mechanical characteristics, and environmental friendliness. The higher resistivity of the epoxy causes numerous surface charges accumulate on result carrier injection high DC electric field, which may cause insulation failure power transmission system. In this study, variou...
Keywords: RF MEMS capacitive switch Dielectric charging Silicon nitride PECVD method a b s t r a c t The present paper aims to provide a better insight to the electrical characteristics of silicon nitride films that have been deposited with PECVD method under different conditions. The effect of film thickness, substrate temperature and the frequency that produces the plasma in PECVD method on t...
We present ultra low-cycle fatigue experiments of axisymmetric nano-crystalline gold films of nano-thickness deformed by a spherical indenter using a recently developed freestanding membrane test. Freestanding membranes of gold were centrally deflected using a spherical indenter attached to a MEMS load cell. Fabrication of the films for these experiments yielded films 100 nm thick and 500 μm in...
In this paper, a boost converter with a clamp circuit is proposed for high intensity discharge (HID) lamp application. The clamp circuit provides zero voltage turn on for both main and clamp switches. Compared to conventional boost converters, the proposed converter has the following advantages: (i) high voltage gain without suffering from extreme duty ratio, (ii) low stress on the switches and...
in this paper, a new cascaded multilevel inverter by capability of increasing the number of output voltage levels with reduced number of power switches is proposed. the proposed topology consists of series connection of a number of proposed basic multilevel units. in order to generate all voltage levels at the output, five different algorithms are proposed to determine the magnitude of dc volta...
روش های معمول برای تهیه بنزوتیازول ها شامل تراکم 2-آمینوتیوفنول با کربوکسیلیک اسید ها، آلدهید ها و هم¬چنین ارتواسترها می باشد. در این کار، کاتالیست nano- γ-al2o3/bf3-n به عنوان کاتالیست اسید جامد تهیه شده است. برای تایید ساختار nano- γ-al2o3 و nano- γ-al2o3/bf3-n طیف مادون قرمز و پراش پرتو xگرفته شده است. مشتقهای بنزوتیازول از طریق تراکم آلدهید ها با 2-آمینوتیوفنول با استفاده از nano- γ-al2o...
As an alternative to conventional CMOS devices, we propose a new family of devices called “Complementary Nano Electro-Mechanical Switches” (CNEMS) using carbon nanotubes as active switching/latching elements. The basic structure of these devices consists of three co-planar carbon nanotubes arranged so that the central nanotube can touch the two side carbon nanotubes upon application of a voltag...
As a vital part of the inflammatory response, the leukocyte adhesion cascade involves the capture of white blood cells at the vascular endothelium, a progressively slowing, “rolling” motion of cells along the vessel walls, firm cell adhesion at target sites, and eventually, the transmigration of activated cells into the inflamed tissue1-4 (for an instructive overview see also http://bme.virgini...
The paper reviews current theoretical methods to study quasi–electrostatic phenomena in single–wall nanotube systems. Several models are presented to demonstrate importance of selfconsistent calculation of the electric fields for electronic device applications. The quantum mechanical formalism of the dielectric function is chosen to obtain the selfconsistent solution. It gives a unified approac...
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