Fabrication of Stacked Layers of Fine Particle Assembly Aiming at Wavelength-Selective Reflection
Kenta Wakamatsu† and Nobuyuki Moronuki
Tokyo Metropolitan University
6-6 Asahigaoka, Hino-shi, Tokyo 191-0065, Japan
This study aims to demonstrate that dielectric particles can be stacked to produce electromagnetic functions. By drawing up a hydrophilic substrate from an aqueous suspension in which fine particles are dispersed, monolayer closed-packed or ordered structures can be obtained by utilizing the meniscus attraction between the particles during the drying process. By repeating this process, particles of different sizes and materials can be stacked layer by layer. By changing the permittivity and/or diameters of the particles through layers, the reflectance of light at a particular wavelength can be increased or decreased. Aiming at selective reflection of the near infrared light, silica (SiO2) particles of φ200 nm and titanium oxide (TiO2) particles of φ33 nm were chosen and two layers were stacked on a silicon wafer. The reflectivity was measured with an original setup. Monochromatic light was focused on the sample at various angles of incidence, and the reflection intensity was measured at specified angles independent of the angle of incidence. By scanning the wavelength of the light, the reflection spectrum at specific incident and reflection angles was obtained. It was confirmed that reflectivity increased by 1.7 μm when the TiO2 oxide layer covered the SiO2 layer, as derived from theory.
-  A. F. Turner and P. W. Baumeister, “Multilayer Mirrors with High Reflectance Over an Extended Spectral Region, Applied optics,” Vol.5, No.1, pp. 69-76, 1966.
-  L. S., H. Du, J. Yang, and Z. Ma, “Optimized broad band and quasi-omnidirectional anti-reflection properties with moth-eye structures by low cost molding,” Applied Surface Science, Vol.325, pp. 100-104, 2015.
-  A. Mekis, J. C. Chen, I. Kurland, S. Fan, P. R. Villeneuve, and J. D. Joannopoulos, “High Transmission through Sharp Bends in Photonic Crystal Waveguides,” Physical Review Letters, Vol.77, pp. 3787-3790, 1996.
-  S.-Y. Lin, E. Chow, V. Hietala, P. R. Villeneuve, and J. D. Joannopoulos, “Experimental Demonstration of Guiding and Bending of Electromagnetic Waves in a Photonic Crystal,” Science, Vol.282, pp. 274-276, 1998.
-  E. Tian, J. Wang, Y. Zheng, Y. Song, L. Jiang, and D. Zhu, “Colorful humidity sensitive photonic crystal hydrogel,” J. of Materials Chemistry, Vol.18, pp. 1116-1122, 2008.
-  Y. Nishijima, K. Ueno, S. Juodkazis, V. Mizeikis, H. Misawa, T. Tanimura, and K. Maeda, “Inverse silica opal photonic crystals for optical sensing applications,” Optics Express, Vol.15, pp. 12979-12988, 2007.
-  G. Q. Liu, Z. S. Wang, Y. B. Liao, H. H. Hu, and Y. Chen, “High-quality photonic crystal heterostructures fabricated by a modified self-assembly method,” Applied Optics, Vol.48, pp. 2480-2484, 2009.
-  A. S. Dimitrov, K. Nagayama, “Continuous Covective Assembling of Fine Particles into Two-Dimensional Arrays on Solid Surfaces, Langmuir,” Vol.12, pp. 1303-1311, 1996.
-  T. Ogi, L. B. Modesto-Lopez, F. Iskandar, and K. Okuyama, “Fabrication of a large area monolayer of silica particles on a sapphire substrate by a spin coating method,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol.297, pp. 71-78, 2007.
-  Y. Inoue, M. Nishiwaki, Y. Kudo, N. Seino, T. Nakagama, and K. Uchiyama, “Preparation of Two-dimensionally Ordered Microbeads Structure Dispensed with an Ink-jet and Its Application to ELISA,” Analytical Sciences, Vol.25, pp. 235-239, 2009.
-  H. Gu, F. Rong, B. Tang, Y. Zhao, D. Fu, and Z. Gu, “Photonic Crystal Beads from Gravity-Driven Microfluidics,” Langmuir, Vol.29, No.25, pp. 7576-7582, 2013.
-  M. Kihara, K. Miyazaki, H. Tsukamoto, K. Inoue, and O. Yoshida, “Reflectivity of Photonic Crystals Self-assembled with Silica Spheres,” J. of Thermal Science and Technology, Vol.1, pp. 12-19, 2006.
-  J. R. Oh, J. H. Moon, S. Yoon, C. R. Park, and Y. R. Do, “Fabrication of wafer-scale polystyrene photonic crystal multilayers via the layer-by-layer scooping transfer technique,” J. of Materials Chemistry, Vol.21, pp. 14167-14172, 2011.
-  P. Masse, S. Reculusa, K. Clays, and S. Ravaine, “Tailoring planar defect in three-dimensional colloidal crystals,” Chemical Physics Letters, Vol.422, pp. 251-255, 2006.
-  P. Jiang, J. F. Bertone, K. S. Hwang, and V. L. Colvin, “Single-Crystal Collidal Multilayers of Controlled Thickness,” Chemistry of Materials, Vol.11, pp. 2132-2140, 1999.
-  S. Reculusa, P. Masse, and S. Ravaine, “Three-dimensional colloidal crystals with a well-defined architecture,” J. of Colloid and Interface Science, Vol.279, pp. 471-478, 2004.
-  M. Nishio, N. Moronuki, and A. Kaneko, “Instability Phenomenon in Dip-Coating Process for Self-Assembly of Fine Particles and Design Countermeasures,” Int. J. Automation Technol., Vol.5, pp. 688-693, 2011.
-  Y. Masuda, M. Itoh, T. Yonezawa, and K. Koumoto, “Low-Dimensional Arrangement of SiO2 Particles,” Langmuir, Vol.18, pp. 4155-4159, 2002.
-  N. P. Johnson, D. W. McComb, A. Richel, B. M. Treble, and R. M. De La Rue, “Synthesis and optical properties of opal and inverse opal photonic crystals,” Synthetic Metals, Vol.116, pp. 469-473, 2001.
This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.