Tracking On-Surface Chemistry with Atomic Precision

Atomic Step Formation on Sapphire Surface in Ultra-precision Manufacturing

Surfaces with controlled atomic step structures as substrates are highly relevant to desirable performances of materials grown on them, such as light emitting diode (LED) epitaxial layers, nanotubes and nanoribbons. However, very limited attention has been paid to the step formation in manufacturing process. In the present work, investigations have been conducted into this step formation mechan...

Site-selective substitutional doping with atomic precision on stepped Al (111) surface by single-atom manipulation

In fabrication of nano- and quantum devices, it is sometimes critical to position individual dopants at certain sites precisely to obtain the specific or enhanced functionalities. With first-principles simulations, we propose a method for substitutional doping of individual atom at a certain position on a stepped metal surface by single-atom manipulation. A selected atom at the step of Al (111)...

Precision Chemistry for Precision Medicine

During the 2015 State of the Union address, President Obama unveiled plans for a $215 million Precision Medicine Initiative. The details of this plan were laid out by past and present directors of the National Institutes of Health, Harold Varmus and Francis Collins, in a commentary in the New England Journal of Medicine. While the announcement stood as a public statement of support for funding,...

Comparative precision analysis of Precision-controls on automated chemistry analyzers

Background: Automated diagnostic equipments took over manual testing in last three decades, that allowed enhanced reproducibility, precision and accurateness of results; in addition to 24/7 availability of major lab testing profiles. Aim: In this regard, present study described comparative equipments’ precision assessment of conventional chemistry analyzer, Hirachi 912 with Cobas c501 on parame...

Precision measurements with atomic hydrogen masers