[18a-A201-1~8] 3.1 Basic optics and frontier of optics (merged with formerly 3.2 Equipment optics and materials)

△ [18a-A201-5] High definition 2-D print of gold microdots with light field possessing orbital angular momentum

〇(B)SAYAKA KAI¹, Haruki Kawaguchi¹, Kanta Takahashi¹, Rong Wei¹, Keisaku Yamane², Ken-ichi Yuyama³, Satoyuki Kawano⁴, Ryuji Morita², Nobuyuki Aoki^1,5, Katsuhiko Miyamoto^1,5, Takashige Omatsu^1,5 (1.Chiba Univ., 2.Hokkaido Univ., 3.Osaka Metropolitan Univ., 4.Osaka Univ., 5.MCRC, Chiba Univ.)

Keywords:optical vortex, printable electronics, LIFT

In this presentation, we demonstrate the direct printing of microdots consisting of the gold nanoparticles with close-packed gold nanoparticles, employed by the optical vortex laser-induced forward transfer technology. The gold nanoparticle suspension with a high concentration of nanoparticles was used as a donor film, and it was irradiated focused optical vortex pulse. Thus, the printed dot had an excellent circularity shape, homogeneity particle distribution, and high two-dimensional imprinting accuracy. This phenomenon was induced by the effect of the orbital angular momentum of the optical vortex. Interestingly, we were able to create a very small dot with a diameter of 8µm in the minimum for using the lens with a high numerical aperture. These results demonstrate the effectiveness of OV-LIFT in printable electronics.