No abstract

The structural changes inside rock-salt crystals after femtosecond (fs) laser irradiation are investigated using a microscopic pump-probe technique and an elastic simulation. The pump-probe imaging shows that a squircle-shaped stress wave is generated after the fs laser irradiation as a result of the relaxation of thermal stress in the photoexcited region. Pump-probe crossed-Nicols imaging and elastic simulation elucidate that shear stresses and tensile stresses are concentrated in specific regions during the propagation of the stress wave. The shear stresses and tensile stresses observed in this study can explain the characteristic laser-induced structural changes inside rock-salt crystals.

Abstract— We present a RGB multicolor EL display, in which a blue organic EL display was combined with color‐changing media (CCM). The CCMs were basically made up of organic fluorescent media which changed the emission color from blue to green or red.

Abstract— For the first time, we report a full‐color organic display with 10‐in. diagonal and high resolution (VGA). This display was based on blue organic EL with color‐changing mediums (CCM). A blue‐emitting material with heat resistance was developed and used. In the construction of the full‐color display, we used a tapered In2O3‐ZnO with Al auxiliary electrodes as an anode with a low resistivity of 2 Ω/□. In addition, the CCM structure was improved in order to increase the contrast ratio of the display.

For the first time, we report a full color organic display with 10 inch diagonal size and high resolution (VGA). This display was based on blue organic EL with color changing mediums (CCM). A blue emitting material with heat resistance was developed and used. In the construction of the full color display, we used a tapered In2O3‐ZnO with an Al auxiliary electrodes as an anode with a low resistivity of 2Ω/square. In addition, the CCM structure was improved in order to increase a contrast ratio of the display.