- 著者
- 森田 康之 石黒 孝知 巨 陽
- 出版者
- The Japanese Society for Experimental Mechanics
- 雑誌
- 実験力学 (ISSN:13464930)
- 巻号頁・発行日
- vol.13, no.1, pp.88-92, 2013-03-28 (Released:2013-09-28)
- 参考文献数
- 20
High-efficiency technology to the photodiodes has become a critical issue. Surface plasmon resonance (SPR) would be one of the means for solving the problem. Photocurrent of photodiodes is enhanced by metal nanoparticles, which induce the localized SPR, deposited on light-receiving surface of the photodiodes. Most previous studies had been focused on the photocurrent enhancement effect around maximum absorption wavelength of the nanoparticles. The effect except the wavelength has not been paid attention yet. For instance, in case of a solar cell, metal nanoparticles which have maximum absorption wavelength at around 500nm, have been widely employed since solar light has higher illuminance around 500nm. However, the photocurrent enhancement effect of the nanoparticles has not studied around near-infrared light though illuminance of the near-infrared light is quite valuable. Therefore, in this study, experimental investigation of photocurrent enhancement effect was conducted using Au nanoparticles with 100 and 150nm in nominal diameters, which have maximum absorption wavelengths at around 500nm. As a result, the photocurrent enhancement effect was obtained at near-infrared wavelengths. In addition, higher enhancement effect was achieved when the two Au nanoparticles were mixed. This would be ascribable to obtaining wider bandwidth of maximum absorption wavelengths due to mixing of different-size nanoparticles.
1 0 0 0 外國思想の受容と日本 : 思想史的考察
- 著者
- 鈴木 新一 森田 康之 坂上 賢一
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集 A編 (ISSN:03875008)
- 巻号頁・発行日
- vol.67, no.655, pp.432-439, 2001-03-25 (Released:2008-02-21)
- 参考文献数
- 24
- 被引用文献数
- 3 4
High-speed holographic microscopy is applied to take successive microscopic photographs of a fast propagating crack at bifurcation. The crack speed is about 650 m/s. From the photographs, crack opening displacements (CODs) of the mother crack and two bifurcated branches are measured along the crack. A specimen with a notch is also made, where the notch has the bifurcated notch tip same as the bifurcated fast propagating crack. Opening displacement of the notch is measured by Moire interferometry under static loading condition. The measurement results show that the opening displacements of both the mother crack of the bifurcated fast propagating crack and the mother notch of the bifurcated notch are proportional to square root of the distance r from the crack or the notch tip. The opening displacements of the two bifurcated branches of the notch are also proportional to √(r). But the CODs of the bifurcated branches of the fast propagating crack are not always proportional to √(r).