KR101168654B1 - 표면 증강 라만 산란에 의한 화학기의 증강된 검출을 위한 층상의 플라즈몬 구조를 가진 광센서 - Google Patents
표면 증강 라만 산란에 의한 화학기의 증강된 검출을 위한 층상의 플라즈몬 구조를 가진 광센서 Download PDFInfo
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Abstract
Description
Claims (16)
- 광센서에 적용되는 분석물 내의 화학기의 존재를 검출하기 위한, 가시광 레이저 여기 빔 및 라만 분광 검출기와 함께 사용되기 위한 광센서로서,(a) 기판;(b) 상기 기판의 센서 표면상에 형성된 플라즈몬 공명 미러;(c) (i) 분석물의 분자를 바인딩하는데 유효한 코팅, (ii) 50-200nm 범위 내에서 선택된 균일한 입자 크기 및 형상 (iii) 상기 레이저 여기 빔의 파장보다 짧은 규칙적으로 주기적인 입자간 간격을 가진 주기적 어레이의 플라즈몬 공명 입자로 이루어진, 상기 미러 위쪽에 배치된 플라즈몬 공명 입자층; 및(d) 상기 입자층으로부터 상기 미러를 분리시키는 2-40nm 범위 내의 두께로 선택된 두께를 가진 광학적으로 투명한 유전체층;을 포함하고,상기 레이저 여기 빔에 의한 상기 입자층에 바인딩된 분석물에의 조사는 적어도 1010의 증폭계수를 가진 상기 분석물의 라만 스펙트럼을 상기 검출기에서 산출하는데 유효한 것을 특징으로 하는 광센서.
- 제 1 항에 있어서, 상기 미러는 30-500nm 사이의 미러 두께를 가진 은, 금, 또는 알루미늄 미러인 것을 특징으로 하는 광센서.
- 제 1 항에 있어서, 상기 입자는 50-150nm의 크기 범위 내에서 선택된 최대치수를 가진 것을 특징으로 하는 광센서.
- 제 3 항에 있어서, 상기 입자는 은, 금, 또는 알루미늄 솔리드 또는 코팅된 입자들로 형성된 것을 특징으로 하는 광센서.
- 제 4 항에 있어서, 상기 미러 및 입자는 모두 금, 또는 모두 은인 것을 특징으로 하는 광센서.
- 제 5 항에 있어서, 상기 입자는 구형인 것을 특징으로 하는 광센서.
- 제 5 항에 있어서, 상기 입자는 실린더 또는 스트립인 것을 특징으로 하는 광센서.
- 제 1 항에 있어서, 상기 입자층은 플라즈몬 금속층의 구역내의 홀로 형성된 것을 특징으로 하는 광센서.
- 제 6 항에 있어서, 상기 입자층은 입자 크기 + (0 내지 20nm)의 입자간 간격을 가진 규칙적인 어레이의 촘촘히 패킹된 플라즈몬 공명 입자로 형성된 것을 특징으로 하는 광센서.
- 제 6 항에 있어서, 상기 입자층은 적어도 한 방향으로 적어도 50개 입자의 주기적 어레이를 포함하는 것을 특징으로 하는 광센서.
- 제 6 항에 있어서, 상기 입자층은 두 평면 방향의 각각으로 적어도 50개 입자의 주기적 어레이를 포함하는 것을 특징으로 하는 광센서.
- 제 1 항에 있어서, 2-40nm 사이의 두께를 가진 광학적 유전체층에 의해 바로 아래놓인 입자층으로부터 각각 분리된 하나 이상의 추가 입자층을 포함하는 것을 특징으로 하는 광센서.
- 제 1 항에 있어서, 상기 기판은 만곡 센서 표면을 가진 입자 비드인 것을 특징으로 하는 광센서.
- 적어도 1010의 증폭계수로 분석물 내의 화학기를 검출하는 방법으로서,(a) (a) 기판;(b) 상기 기판의 센서 표면상에 형성된 플라즈몬 공명 미러;(c) (i) 분석물의 분자를 바인딩하는데 유효한 코팅, (ii) 50-200nm 범위 내에서 선택된 균일한 입자 크기 및 형상, (iii) 레이저 여기 빔의 파장보다 짧은 규칙적으로 주기적인 입자간 간격을 가진 주기적 어레이의 플라즈몬 공명 입자로 이루어진, 상기 미러 위쪽에 배치된 플라즈몬 공명 입자층; 및(d) 상기 입자층으로부터 상기 미러를 분리시키는 2-40nm 범위 내의 두께로 선택된 두께를 가진 광학적으로 투명한 유전체층;으로 구성된 옵티컬 디바이스 내의 플라즈몬 공명 입자의 표면에 분석물을 바인딩하는 단계,(b) 가시광 레이저 여기 빔을 상기 입자에 바인딩된 분석물의 분자에 조사하는 단계, 그리고(c) 상기 조사하는 단계에 의해 산출된 라만 스펙트럼을 기록하는 단계를 포함하는 것을 특징으로 하는 분석물 내의 화학기를 검출하는 방법.
- 제 14 항에 있어서, 적어도 1012의 증폭계수를 산출하는데 유효하고, 하나 또는 소수의 분석물의 분자에서 화학기를 검출할 수 있는 것을 특징으로 하는 분석물 내의 화학기를 검출하는 방법,
- 제 15 항에 있어서, 상기 조사하는 단계는 0.1과 1mW 사이의 빔 파워 레벨에서 수행되는 것을 특징으로 하는 분석물 내의 화학기를 검출하는 방법.
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IL179292A (en) | 2011-11-30 |
RU2361193C2 (ru) | 2009-07-10 |
AU2005246415A1 (en) | 2005-12-01 |
CA2566123A1 (en) | 2005-12-01 |
AU2005246415B8 (en) | 2011-09-01 |
AU2005246415B2 (en) | 2011-05-12 |
WO2005114298A2 (en) | 2005-12-01 |
US8093065B2 (en) | 2012-01-10 |
CN1957245A (zh) | 2007-05-02 |
CA2566123C (en) | 2014-02-18 |
BRPI0511255A (pt) | 2007-11-27 |
CN1957245B (zh) | 2010-12-08 |
ZA200610693B (en) | 2008-06-25 |
WO2005114298A3 (en) | 2006-10-12 |
KR20070015609A (ko) | 2007-02-05 |
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