PLA法による石英基板上への金ナノ構造の作製と4-MBAを利用した表面増強ラマン散乱の評価

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2023/01/01

タイトル(英語): Deposition of Gold Nanostructured Films on Quartz Substrates by Pulsed Laser Ablation and Evaluation of Activated Chips Expressed Surface-Enhanced Raman Scattering by using 4-Mercaptobenzoic Acids

著者名: 胡桃　聡（日本大学理工学部），吉野　航（日本大学大学院理工学研究科），松田　健一（日本大学理工学部），鈴木　薫（日本大学理工学部）

著者名(英語): Satoshi Kurumi (College of Science and Technology, Nihon University), Wataru Yoshino (Graduate School of Science and Technology, Nihon University), Ken-ichi Matsuda (College of Science and Technology, Nihon University), Kaoru Suzuki (College of Science and Technology, Nihon University)

キーワード: 金ナノ構造，局在表面プラズモン，パルスレーザアブレーション，表面増強ラマン散乱，SERSチップ_x000D_　　gold nanostructure，LSPR，PLA，SERS，SERS chip

要約(英語): In this paper, we report on a one-step production method of gold nanostructured films for a surface-enhanced Raman scattering (SERS) chip, expected to be an advanced device for high-sensitive molecular detection, by a pulsed laser ablation method. Surface images, taken by atomic force microscopy, revealed that the gold nanostructured film on a SiO2 substrate have dome-shaped nanostructures. Pattern of x-ray diffraction of the gold nanostructured films showed existence of an Au(111) crystalline and intensity of it was increased with increment of the laser pulses from 5000 to 15000. Optical transmittance spectra of the gold nanostructured films on SiO2 showed that significant redshift of the absorption edge from 582 to 632 nm with increasing the number of the laser pulses. To evaluate the so-called enhancement factors of the SERS chips fabricated in this study, we measured SERS activation signals from the gold nanostructured films decorated with 4-mercaptobenzoic acids by a Raman spectroscopic system equipped with two different laser beams (532 and 785 nm). Using a 785 nm wavelength laser beam, the SERS activation signals were detected clearly from the gold nanostructured film produced with 15000 pulses. From that measurement, we approximately calculated the enhancement factor for that nanostructure as 1.4×105.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.143 No.1 （2023） 特集：2023年研究開発の動向と最前線

本誌掲載ページ: 38-43 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/143/1/143_38/_article/-char/ja/