V. A.B. progeny in A.B. herds

1-V CMOS Class AB Current Mirror

A CMOS class AB current mirror whose supply requirements are restricted to one threshold voltage plus three saturation voltages is presented. The circuit uses two poly resistors and two auxiliary differential amplifiers to achieve low-voltage operation, as well as control of quiescent currents and input bias voltage. A design example is implemented in a 0.5-μm standard technology and uses a 1-V...

AB INITIO QUANTUM CHEMICAL STUDIES IN CTAB

Quaternary ammonium compounds (QACS) are employed both as disinfectants for manual processing lines and surfaces in the food industry, and in human medicine area. QACS also cause cell death by protein denaturation . One of the QAC is cetyl trimethyl ammonium bromide (CTAB) that appears to rapture the cell membrane. The primary site of action of CTAB has been suggested to be the lipid components...

Breaking AB stacking order in graphite oxide: ab initio approach.

Different bulk structures of graphite oxide were systematically investigated using density functional theory (DFT). Our model consisted of a hexagonal in-plane structure of graphene with hydroxyl and epoxide groups, and different oxidation levels and water content. The graphitic AB stacking order was stable in anhydrous graphite oxide, independent of oxidation levels. The hydrogen bonding inter...

Ab initio I-V characteristics of short C-20 chains

Just How Ab Initio Is Ab Initio Quantum Chemistry?

Quantum Mechanics has been the most spectacularly successful theory in the history of science. As is often mentioned the accuracy to which the gyromagnetic ratio of the electron can be calculated is a staggering nine decimal places. Quantum Mechanics has revolutionized the study of radiation and matter since its inception just over one hundred years ago. The impact of the theory has been felt i...