Ferroelectric “gourd” goes into vdW atomic cage

Single Atomic Layer Ferroelectric on Silicon.

A single atomic layer of ZrO2 exhibits ferroelectric switching behavior when grown with an atomically abrupt interface on silicon. Hysteresis in capacitance-voltage measurements of a ZrO2 gate stack demonstrate that a reversible polarization of the ZrO2 interface structure couples to the carriers in the silicon. First-principles computations confirm the existence of multiple stable polarization...

Atomic Insights into the Melting Behavior of Metallic Nano-catalysts

In the present study, molecular dynamics simulations have been utilized to provide fundamental understanding of melting behavior of pure Pd and Pt nanoparticles with the size of 10 nm in diameter, both free and graphene-supported during continuous heating. The embedded atom method is employed to model the metal-metal interactions, whereas a Lennard-Jones potential is applied to describe the met...

The effect of atomic nitrogen on the C(60) cage.

We herein report the investigation of N@C(60) exposed to laser flash excitation to exhibit the acceleration of the decay of (N@C(60))* by the encased N atom.

Okediji, The Shattered Gourd

Into the Twenty-First Century: Medical History Goes Online

As of spring 2005,Medical History became the first medical history journal to make its complete archive available, free of charge, on the Internet. All future issues of Medical History will be freely available online at the time of publication. The journal will continue to be produced and be available in hard copy, and we hope that our readers will enjoy and make use of the flexibility of these...