【公開日：2025.06.10】【最終更新日：2025.04.16】
課題データ / Project Data
課題番号 / Project Issue Number
24NM5293
利用課題名 / Title
Nanocomposites for energy and environmental applications
利用した実施機関 / Support Institute
物質・材料研究機構 / NIMS
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）マテリアルの高度循環のための技術/Advanced materials recycling technologies（副 / Sub）-
キーワード / Keywords
光学材料・素子/Optical materials,X線回折/ X-ray diffraction
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
鈴木 達
所属名 / Affiliation
物質・材料研究機構
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
NM-216：薄膜X線回折装置_Cu
NM-218：ゼータ電位＆粒径測定装置（ELSZ-2000ZS）
NM-215：卓上型X線回折計_Cu_SMF
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
The use of photonic crystals (PCs) is gaining in interest regarding the interaction between light and organized structures but it can be limited in terms of production cost, rate or substrate size. This work highlights an efficient and low-cost fabrication of opal structure based on the electrophoretic deposition (EPD) of self-made silica particles. The process allows to reduce the fabrication time compared to classical evaporation or sedimentation methods from days (evaporation) or weeks-months (sedimentation) to two minutes. Silica particles under 300 nm tend to have a very low sedimentation rate but present a partial band gap in the visible region when they form a close-packed structure. Obtained opals are iridescent, from blue to red, and have extra angle-dependent colors. Moreover, silica particles are formed after a two-hours synthesis and their washing, including centrifugation step, did not lead to aggregates. These latter tend to break the long-range order in the PCs.
実験 / Experimental
The SiO2 nanoparticles were
synthetized following the Stöber method, their sizes were modified from 180 to 310 nm thanks to TEOS concentration modification.
Electrophoretic deposition of SiO2 was performed in Ethanol and on ITO glass substrates.
結果と考察 / Results and Discussion
Artificial opal photonic crystals showed bright colors, from blue to red with an angle-dependent color thanks to their close-packed fcc structure, at short and long-range. One could envision achieving optimized photonic crystals quality and reduce the defects by more effectively controlling the polydispersity of silica nanoparticles during the synthesis or by selecting precisely sized particles after synthesis. However, the aim of this work was to promote a low-cost and efficient way to form PCs in a very short time with a scalable technique. The specified partial band gap can be tuned over the whole visible spectrum by adjusting the nanoparticles size regarding the application or the photoactive compound it can be associated with.
図・表・数式 / Figures, Tables and Equations
XRD pattern of an average PCs films prepared by EPD from ethanol and SiO2 particle suspension
SiO2 Particles Synthesis Parameter and Diameter Evaluations
Zeta Potential of the Different Alcohol−Water Mixtures Suspensions
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
-
Clement Lebastard, Facile and Rapid Fabrication of Opal Photonic Crystals by Electrophoretic Deposition, ACS Applied Optical Materials, 3, 153-160(2025).
DOI: 10.1021/acsaom.4c00446
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件