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The possible mechanisms of formation of PAHs and PANHs in different environments such as interstellar media under different ionizing conditions were investigated. Reactions of benzene radical cations with acetylene produce styrene and naphthalene-type cations at high temperatures are demonstrated. Ion molecule reactions of pyridine cation, benzonitrile cation and pyrimidine radical cation with acetylene are studied. Formation of complex organics with fused nitrogen atom in an aromatic ring is reported. Formation of PAHs over nanoparticle surfaces is carried out by studying polymerization of...

Continuous scaling in the technology feature size and hence the supply voltage, has directed analog designers to change the signal representation from voltage domain to current domain. That is why the high performance current-mode building blocks have received a great deal of interest. The current-mode is better than the voltage-mode in such aspects like: lower voltage supplies, lower power consumption, wider dynamic range and higher bandwidth. The current-mode circuits offer higher frequency capabilities than corresponding voltage-mode circuits due to the constant bandwidth irrespective of...