Kang Sung-Mook
School of Electronic and Electrical Engineering, Daegu Catholic University, Hayangro 13-13, Hayang-eup, Gyeongsan-si 38430, Gyeongbuk, Korea.
Nanomaterials (Basel). 2022 Apr 14;12(8):1350. doi: 10.3390/nano12081350.
To verify the possibility of multiple localized surface plasmon resonance based optical recording mechanism, the present study has demonstrated that an Au nanoparticles array deposited with media combined with a ridge-type nanoaperture can amplify the || intensity of the incident optical light transmitted into the media under specific conditions. Using a numerical Finite-Difference Time-Domain method, we found that the optical intensity amplification first occurred in the near-field region while penetrating the ridge-type nanoaperture, then the second optical amplification phenomenon was induced between the metal nanoparticles, and eventually, the excitation effect was transferred to the inside of the media. In a system consisting of a Gold (Au) NPs deposited media and nanoaperture, various parameters to increase the || intensity in the near-field region were studied. For an Au nanoparticle size (Cube) = 5 nm × 5 nm × 5 nm, an inter-particle space = 10 nm, and a gap (between nanoaperture and media) = 5 nm, the || intensity of a ridge-type nanoaperture with an Au nanoparticles array was found to be ~47% higher than the || intensity of a ridge-type nanoaperture without an Au nanoparticles array.
为了验证基于多重局域表面等离子体共振的光学记录机制的可能性，本研究表明，沉积有介质并结合脊型纳米孔径的金纳米颗粒阵列在特定条件下可以增强入射到介质中的光的||强度。使用数值有限时域差分方法，我们发现光强增强首先发生在穿透脊型纳米孔径时的近场区域，然后在金属纳米颗粒之间诱导出第二次光增强现象，最终，激发效应转移到介质内部。在由沉积有金（Au）纳米颗粒的介质和纳米孔径组成的系统中，研究了各种增加近场区域||强度的参数。对于金纳米颗粒尺寸（立方体）=5nm×5nm×5nm、颗粒间间距=10nm以及（纳米孔径与介质之间的）间隙=5nm的情况，发现具有金纳米颗粒阵列的脊型纳米孔径的||强度比没有金纳米颗粒阵列的脊型纳米孔径的||强度高约47%。
