Kiyoshi Nakamura

TL;DR: In this paper, it was shown that heat treatment of a LiNbO3 plate at temperatures somewhat lower than the Curie point causes a ferroelectric domain inversion, thereby yielding an inversion layer useful for various piezoelectric devices.

TL;DR: In this article, the authors presented the experimental confirmation of the high coupling factor and elucidates the relationship between the domain structure and the piezoelectric properties in the pseudocubic (001)pc cut.

TL;DR: In this article, single crystals of a thiophene/phenylene co-oligomer [α,ω-bis-biphenyl-4-yl-terthiophene (BP3T)] showed interesting photonic aspects: (1) the self-waveguided amplified spontaneous light emissions with a comparable low threshold of 8μJ∕cm2 to other optimized organic solid-state laser systems, and (2) the laser oscillation based on the optical self-confinement effect in the crystals.

TL;DR: In this article, a thickness-extensional mode piezoelectric resonator consisting of a ZnO/SiO2 diaphragm supported by a silicon wafer was presented.

TL;DR: In this article, a three-dimensional vertically-stacked flexible integrated circuit is demonstrated based on hybrid complementary inverters made of n-type In-Ga-Zn-O (a-IGZO) amorphous oxide thin-film transistors (TFTs) and p-type poly-(9,9-dioctylfluorene-co-bithiophene) (F8T2) polymer TFTs, where all the fabrication processes were performed at temperatures ≤120 °C.