An electrochemical thermal transistor

A recent collaboration among the groups of Ken Goodson and Eric Pop at Stanford University and of Davide Donadio at UC Davis developed a device, which thermal conductance can be modulated reversibly by a factor 10x in few minutes by electrochemical intercalation. This nanoscale switch is made of several layers of MoS2, and its thermal conductance has been measured at in operando conditions.

Eu₁₁Zn₄Sn₂As₁₂: A Ferromagnetic Zintl Semiconductor with a Layered Structure Featuring Extended Zn4As6 Sheets and Ethane-like Sn2As6 Units

In a recent publication from the Kauzlarich and Taufour labs (Devlin et. al., Chem. Mater., 2018) describes the synthesis, structure, and magnetic properties of a new layered Zintl phase and structure type, Eu₁₁Zn₄Sn₂As₁₂. Eu₁₁Zn₄Sn₂As₁₂ is made up of unique beehive Zn₄As₆ sheets with pseudo-trigonal planer Zn and ethane-like Sn₂As₆ units. Eu₁₁Zn₄Sn₂As₁₂ exhibits a large negative colossal magnetoresistance of 2690-fold at 9 T.

The Zinc Linchpin Motif in the DNA Repair Glycosylase MUTYH: Identifying the Zn²⁺ Ligands and Roles in Damage Recognition and Repair

A recent publication from the David, Siegel and Lim (Academia Sinica, Taiwan) labs (Nuñez et al., JACS, 2018) provides insight into the coordination sphere and critical role of a Zn²⁺ metal binding site in the DNA repair glycosylase MUTYH. Genome database mining and sequence alignment of MUTYH orthologs, along with computational modeling, identified and supported Zn²⁺ ligation by four Cys residues. Three of the Cys residues lie in an interdomain connector region unique to mammalian MutY enzymes, while the 4th Cys is located in close proximity to the Fe-S cluster DNA binding domain.

X-ray Triggered Release of Engineered Proteins from Nanoparticles

In a recent publication (Su and coworkers, X-ray Mediated Release of Molecules and Engineered Proteins from the Surface of Nanoparticles, 2018) the Guo and Siegel Labs presents unprecedented efficient release of modified green fluorescent proteins (GFP) from the surface of silica-coated gold nanoparticles.

Ultrafast Spintronics in Photochromic Cobalt Switches

In a recent publication (Jenkins et al. Ultrafast Spintronics: Dynamics of the Photoisomerization-Induced Spin–Charge Excited-State (PISCES) Mechanism in Spirooxazine-Based Photomagnetic Materials), the Larsen Lab, in collaboration with the Frank Lab (U. Victoria) explored the primary photodynamics of a novel Co coordination complex that via the structural evolution of a modified spirooxazine ligand will induced long living spin states.