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METHOD FOR MANUFACTURING SUBSTRATE FOR SURFACE ENHANCED RAMAN SPECTROSCOPY, AND SUBSTRATE MANUFACTURED BY SAID METHOD

Foreign code F160008868
File No. (S2015-0694-N0)
Posted date Oct 5, 2016
Country WIPO
International application number 2016JP055542
International publication number WO 2016136851
Date of international filing Feb 25, 2016
Date of international publication Sep 1, 2016
Priority data
  • P2015-035503 (Feb 25, 2015) JP
Title METHOD FOR MANUFACTURING SUBSTRATE FOR SURFACE ENHANCED RAMAN SPECTROSCOPY, AND SUBSTRATE MANUFACTURED BY SAID METHOD
Abstract A method for manufacturing a substrate for surface enhanced Raman spectroscopy which has a metal film formed on the surface thereof, said method being characterized by comprising the steps of: immersing at least a part of a substrate in a mixed solution prepared by mixing a metal nano-particle solution containing metal nano-particles with an oil-in-water-type emulsion solution; pouring an oily solution into the mixed solution to form an oil/water interface; and pulling out the substrate when the metal nano-particles are accumulated on the oil/water interface, thereby depositing a metal film formed from the metal nano-particles on the surface of the substrate. By employing the method, it becomes possible to provide a substrate for surface enhanced Raman spectroscopy which can be manufactured at low cost and has a uniformly protruded and depressed surface structure.
Outline of related art and contending technology BACKGROUND ART
Raman spectroscopy, a substance to be measured when irradiated with light having a predetermined wavelength, the incident light and the very slight light of different wavelengths contained in light scattering, the incident light and if the frequency of the different wavelengths of light, molecules contained in the material of the measuring object is equal to the natural frequency is used.
However, the incident light at a different wavelength of light, is extremely weak. Therefore, at present a surface enhanced Raman spectroscopy has been used. This surface enhanced Raman spectroscopy, a substance to be measured is dropped on the surface of the nanoscale textured structure made of a noble metal in advance, the noble metal in the vicinity of the concavo-convex structure due to cause a near field, and the near-field light through the different wavelengths of light to be amplified is used.
As a method of forming the concavo-convex structure, a top-down processing method, vacuum vapor deposition method, the use of aggregation of the noble metal nanoparticles, or plastic microspheres using known methods.
A top-down processing method, an electron beam or ion beam or the like is used, the surface of the insulating substrate such as a glass plate, a noble metal deposition, lifting off, or by cutting away the noble metal is deposited to form a fine structure so as to form a convexity.
Vacuum vapor deposition method, the surface of an insulating glass plate by depositing a metal on an irregular structure.
Aggregation of the noble metal nanoparticles used in the method, the colloidal noble metal nanoparticles and the surface of the insulating substrate such as a glass plate and is aggregated with an irregular structure.
In the usage of the plastic micro-spheres, the surface of the glass plate or an insulating substrate such as a plastic sphere of the sub-micron to micron size are arranged in a self-assembled, the upper surface of the plastic sphere in depositing a metal, a plastic sphere has been equalized by the size of the irregular structure (for example, see Patent Document 1.).
Scope of claims (In Japanese)[請求項1]
基板の表面に金属膜を形成した表面増強ラマン分光用基板の作製方法において、
金属ナノ粒子を含有した金属ナノ粒子溶液と水中油滴エマルション液とを混合した混合液に前記基板の少なくとも一部分を浸漬させる工程と、
前記混合液に油性液を注ぎ入れることで油水界面を形成する工程と、
前記油水界面に前記金属ナノ粒子が集積した状態となったところで前記基板を引き抜くことで、前記基板の表面に前記金属ナノ粒子で構成される金属膜を堆積させる工程と
を有する表面増強ラマン分光用基板の作製方法。
[請求項2]
前記水中油滴エマルション液は、前記油性液と同じ油性液と、水と、界面活性剤とを混合して超音波処理した溶液であって、前記界面活性剤としてアルキルアミンを用いている請求項1に記載の表面増強ラマン分光用基板の作製方法。
[請求項3]
表面増強ラマン分光に用いるレーザー光の波長に応じて、前記アルキルアミンの炭素鎖の炭素数を調整している請求項2に記載の表面増強ラマン分光用基板の作製方法。
[請求項4]
表面に金属膜が形成された基板において、
前記金属膜は、この金属膜を構成する金属ナノ粒子を含有した金属ナノ粒子溶液と水中油滴エマルション液とを混合した混合液に油性液を注ぎ入れて形成した油水界面に前記金属ナノ粒子を集積させて形成することで、前記金属ナノ粒子の最密充填単層膜とした基板。
[請求項5]
前記水中油滴エマルション液は、前記油性液と同じ油性液と、水と、界面活性剤とを混合して超音波処理した溶液であって、前記界面活性剤としてアルキルアミンを用いた請求項4に記載の基板。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
  • Inventor
  • TAKEYASU, Nobuyuki
  • KAGAWA, Ryusuke
  • KANETA, Takashi
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG

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