In recent years, 4H-SiC power devices have been widely employed in electronic systems owing to their superior performance Si devices. However, stacking faults can degrade the device performance. Stacking be considered as polytype inclusions 4H-SiC. Carrier recombination is a cause for degradation. Understanding carrier different polytypes other than helpful understanding mechanism of degradatio...

Direct atomistic simulations of dislocation multiplication in fcc aluminum reveal an unexpected mechanism, in which a Frank-Read source emits dislocations with Burgers vectors different from that of the source itself. The mechanism is traced to a spontaneous nucleation of partial dislocation loops within the stacking fault. Understanding and a quantitative description of this unusual process ar...

Macroscopic strain was hitherto considered a necessary corollary of deformation twinning in coarse-grained metals. Recently, twinning has been found to be a preeminent deformation mechanism in nanocrystalline face-centered-cubic (fcc) metals with medium-to-high stacking fault energies. Here we report a surprising discovery that the vast majority of deformation twins in nanocrystalline Al, Ni, a...

Base stacking is important for the base pair interaction of a DNA duplex, DNA replication by polymerases, and single-stranded nucleotide overhangs. To study the mechanisms responsible for DNA stacking interactions, we measured the thermal stability of DNA duplexes containing a non-natural nucleotide tethered to a simple aromatic hydrocarbon group devoid of dipole moments and hydrogen bonding si...

Air-core coil current transformer is a key piece of equipment in the digital substation development. However, it more vulnerable to various faults when compared with traditional electromagnetic transformer. Aiming at understanding effect parameters on performance air-core transformer, this paper investigates influence these factors using maximum information coefficient. The interference mechani...

A novel method for the on-column sample stacking of proteins is described. The strategy takes advantage of interactions between protein molecules and sodium dodecyl sulfate (SDS) monomers. A long plug of a protein sample (either acidic or basic) is injected into a capillary filled with a background electrolyte (BGE) containing SDS. When a potential is applied, the proteins interact with SDS mon...