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Thin films of Topological insulators (TIs) coupled with ferromagnets (FMs) are excellent candidates for energy-efficient spintronics devices. Here, the effect of crystalline structural disorder of TI on interfacial and magnetic properties of sputter-deposited TI/FM, Bi2Te3/Ni80Fe20, heterostructures is reported. Ni and a smaller amount of Fe from Py was found to diffuse across the interface and react with Bi2Te3. For highly crystalline c-axis oriented Bi2Te3 films, a giant enhancement in Gilbert damping is observed, accompanied by an effective out-of-plane magnetic anisotropy and enhanced damping-like spin-orbit torque (DL-SOT), possibly due to the topological surface states (TSS) of Bi2Te3. Furthermore, a spontaneous exchange bias is observed in hysteresis loop measurements at low temperatures. This is because of an antiferromagnetic topological interfacial layer formed by reaction of the diffused Ni with Bi2Te3 which couples with the FM, Ni80Fe20. For increasing disorder of Bi2Te3, a significant weakening of exchange interaction in the AFM interfacial layer is found. These experimental results Abstract length is one paragraph.

Objectives: The study was performed to compare the status of nutrition management with and without dietitian in residential facilities in order to provide basic data for high quality of nutrition management services across the country.Methods: Among long-term care facilities with claims of benefits, 747 samples were extracted through a proportionate stratified sampling method based on region, agents of foundation, types of food service, and facility size.Results: The subjects of the survey were dietitian, general managers, or facility directors. Nutrition evaluation, nutrition intervention, and nutrition monitoring were performed by professional staff at the residential facilities with a dietitian. On the other hand, it was found that the rate of nutrition management performance was relatively low in residential facilities where no dietitian was assigned, and it was performed by non-professional personnel such as nurse aids and social workers.Conclusions: The results of this study suggested that developing strategies is required to reinforce the safe minimal standard of dietitians’ staffing levels for systematic nutrition management.

Transparent electrode arrays have emerged as promising platforms for neural interfacing by enabling simultaneous electrophysiological recording and optical measurements. Soft and thin devices also have compelling advantages due to their less mechanical mismatch with the brain tissue. Here we demonstrate a bilayer-nanomesh-based transparent microelectrode array (MEA) on ultrathin Polydimethylsiloxane (PDMS) substrate. We have successfully fabricated 32-channel, bilayer-nanomesh microelectrodes on PDMS with total device thickness down to only 10μm. In addition to excellent electrode performance, device reliability, and optical transparency, we have also demonstrated successful hydrophilic surface modification and great sterilization compatibility.