Design Meets Neuroscience: An Electroencephalogram Study of Design Thinking in Concept Generation Phase.

Extant research on design thinking is subjective and limited. This manuscript combines protocol analysis and electroencephalogram (EEG) to read design thoughts in the core design activities of concept generation phase. The results suggest that alpha band power had event related synchronization (ERS) in the scenario task and divergent thinking occupies a dominant position.

Ag-SiO₂-Er₂O₃ nanocomposites: highly effective upconversion luminescence at high power excitation and high temperature.

Rare Earth (RE) activated upconversion phosphors (UCPs), have demonstrated significant application potentials in some front fields, including solar energy conversion and bio-application. However, some bottleneck problems should be overcame, such as the lower upconversion efficiency, narrower excitation band, concentration-quenching and temperature-quenching. To solve these problems, the Ag-SiO2-Er2O3 nanocomposites were fabricated, in which the upconversion luminescence (UCL) of Er2O3 was white broadband.

The up-conversion luminescent properties and silver-modified luminescent enhancement of YVO4:Yb3+, Er3+ NPs.

In this paper, the unique up-conversion luminescence (UCL) properties of as-prepared and annealing YVO(4):Yb(3+), Er(3+) nanoparticles (NPs, ∼100 nm) and the corresponding YVO(4):Yb(3+), Er(3+)@Ag hybrids under 980 nm excitation were systemically studied through power-dependent, temperature-dependent emission spectra and dynamics. It is interesting to determine that the radiative transition rate of (2)H(11/2)/(4)S(3/2)-(4)I(15/2) for Er(3+) ions in YVO(4) is about an order of magnitude faster than that in the other hosts due to the wave function coupling with the 3d orbital of V(5+) and, thus, the up-conversion (UC) green emissions of YVO(4):Yb(3+), Er(3+) NPs is efficient. In addition, efficient novel UC broad band centering around 630 nm (1.