JP2016508602A - 偏光選択性表面増強ラマン分光法 - Google Patents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N21/658—Raman scattering enhancement Raman, e.g. surface plasmons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
- G01J3/4412—Scattering spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/21—Polarisation-affecting properties
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2201/06—Illumination; Optics
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- G01N2201/06113—Coherent sources; lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
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- G01N2201/068—Optics, miscellaneous
- G01N2201/0683—Brewster plate; polarisation controlling elements
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Abstract
Description
Claims (15)
- 偏光選択性表面増強ラマン分光(SERS)システムであって、
偏光依存プラズモンモードを呈するためにSERSマルチマーとして配置された複数のナノフィンガーを有するSERSセンシング基板と、
前記SERSマルチマーを刺激信号で照射するための刺激源と、
前記SERSマルチマーの近くにある検体によって放出されたラマン散乱信号を検出するためのラマン検出器
を備え、
前記ラマン散乱信号は、前記偏光依存プラズモンモードに関連する偏光状態を有し、
前記刺激信号が、前記SERSマルチマーの前記偏光依存プラズモンモードを選択的に刺激するように偏光されることと、前記ラマン検出器が、前記ラマン散乱信号の偏光状態と該偏光状態とは異なるバックグラウンドノイズ信号の偏光状態とを区別することができることとのいずれかまたは両方を含む、システム。 - 前記SERSマルチマーの前記ナノフィンガーは、該ナノフィンガーの自由端においてSERS−増強ナノ粒子を有し、前記自由端は、前記SERSセンシング基板の支持面に取り付けられた端部の反対側にある、請求項1のシステム。
- 前記ナノ粒子は、前記検体を選択的に吸着するように機能化された金属表面を有する、請求項2のシステム。
- 前記SERSマルチマーは二量体であり、前記偏光依存プラズモンモードと前記ラマン散乱信号の偏光状態の両方が、前記二量体の長軸に実質的に整列している、請求項1のシステム。
- 前記バックグラウンドノイズ信号は、蛍光バックグラウンド信号と迷光の一方または両方を含む、請求項1のシステム。
- 前記刺激源は、前記刺激信号を生成するために選択可能な偏光状態を有する偏光子を備え、前記刺激信号は、前記SERSマルチマーの前記偏光依存プラズモンモードに対応しかつ該プラズモンモードを選択的に励起する偏光状態を有する、請求項1のシステム。
- 前記検出器は、前記ラマン散乱信号の偏光状態の主成分と該主成分に直交する前記偏光状態の成分との一方または両方を選択的に受け取るための偏光弁別器を備える、請求項1のシステム。
- 偏光選択性表面増強ラマン分光(SERS)システムであって、
マルチマーとして配置された複数のナノフィンガーであって、該ナノフィンガーは、自由端においてSERS−増強ナノ粒子を有し、該マルチマーは偏光依存プラズモンモードを呈することからなる、複数のナノフィンガーと、
刺激源とラマン検出器の一方または両方
を備え、
前記刺激源は、制御可能な偏光状態を有する刺激信号を生成するための偏光子を備え、前記刺激信号は、前記偏光依存プラズモンモードに対応する偏光状態で前記マルチマーを照射するためのものであり、
前記ラマン検出器は、前記マルチマーの近くにある検体によって放出されたラマン散乱信号を検出するためのものであり、
前記ラマン検出器は、前記ラマン散乱信号の偏光状態を選択的に受け取り、かつ、該偏光状態とは異なる偏光状態を有するバックグラウンドノイズ信号を受け入れない偏光弁別器を備えることからなる、システム。 - 前記刺激源の前記偏光子と前記偏光弁別器との一方または両方が、回転可能な偏光子を備える、請求項8のシステム。
- 前記回転可能な偏光子が、前記刺激源と前記ラマン検出器によって共有される、請求項9のシステム。
- 前記マルチマーが二量体であり、該二量体が、該二量体の長軸に実質的に整列した偏光依存プラズモンモードを呈する、請求項8のシステム。
- 前記バックグラウンドノイズ信号が、実質的に非偏光の蛍光信号を含む、請求項8のシステム。
- SERS基板を刺激信号で照射するステップであって、前記SERS基板は、マルチマーとして配置された複数のナノフィンガーを含み、該ナノフィンガーは、支持部に取り付けられた前記ナノフィンガーの端部の反対側にある自由端にSERS−増強ナノ粒子を有し、前記照射されたマルチマーは偏光依存プラズモンモードを呈することからなる、ステップと、
前記マルチマーの近くにある検体によって放出されたラマン散乱信号を検出するステップ
を含む、偏光選択性表面増強ラマン分光(SERS)の方法であって、
前記刺激信号が、前記マルチマーの前記偏光依存プラズモンモードを選択的に刺激するように偏光されることと、
前記検出されたラマン散乱信号が、前記偏光依存プラズモンモードに関連する偏光状態を有し、前記検出されたラマン散乱信号は、該偏光状態とは異なる偏光状態を有するバックグラウンドノイズ信号から選択的に区別されること、
との一方または両方を含むことからなる、方法。 - 前記刺激信号の偏光状態と、前記ラマン散乱信号の偏光状態を選択可能に区別するために使用される偏光弁別器の偏光状態との一方または両方を回転させるステップをさらに含む、請求項13の方法。
- 前記バックグラウンドノイズ信号が、実質的に非偏光の蛍光信号を含む、請求項13の方法。
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PCT/US2013/023894 WO2014120158A1 (en) | 2013-01-30 | 2013-01-30 | Polarization selective surface enhanced raman spectroscopy |
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EP (1) | EP2951562A1 (ja) |
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CN105102962A (zh) | 2015-11-25 |
US20160003748A1 (en) | 2016-01-07 |
EP2951562A4 (en) | 2015-12-09 |
US9664621B2 (en) | 2017-05-30 |
JP5957153B2 (ja) | 2016-07-27 |
EP2951562A1 (en) | 2015-12-09 |
WO2014120158A1 (en) | 2014-08-07 |
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