KR102190402B1 - 탄소 나노물질 조각을 패터닝하는 방법 및 처리된 탄소 나노물질 조각 - Google Patents
탄소 나노물질 조각을 패터닝하는 방법 및 처리된 탄소 나노물질 조각 Download PDFInfo
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Abstract
Description
도 1a는 탄소 나노물질 조각의 제 1 영역을 광에 로컬 노출시키는 것을 보여주며,
도 1b 는 제 1 영역이 노출되고 산화된 후 탄소 나노물질 조각의 제 2 영역을 광에 로컬 노출시키는 것을 보여주며,
도 2a 는 상단에서 바라본 그래핀 단층의 예를 보여주며,
도 2b 는 분해 사시도의 다층 그래핀의 예를 보여주며,
도 2c 는 탄소 나노튜브의 예를 보여주며,
도 2d 는 탄소 나노튜브의 네트워크의 예를 보여주며,
도 3a 는 탄소 나노물질 조각의 일부를 광에 로컬 노출시키는 방법을 보여주며,
도 3b 는 탄소 나노물질 조각의 일부를 광에 로컬 노출시키는 방법을 보여주며,
도 4는 처리된 탄소 나노물질 조각 및 여기에 속하는 다양한 영역들을 보여주며,
도 5는 탄소 나노물질 조각을 제시된 방법으로 패터닝하기 전(A) 및 후(B)의 4-웨이브 믹싱 (FWM) 현미경으로 관찰된 바와 같은 탄소 나노물질 조각을 보여준다.
Claims (13)
- 탄소 나노물질 조각 (100)을 패터닝하는 방법으로서,
- 탄소 나노물질 조각 (100)이 (i) 길이 (L), 폭 (W) 및 두께 (T)를 갖거나 (ⅱ) 길이 (L), 폭 (W) 및 두께 (T)를 갖는 탄소 나노물질의 샘플로부터 수득가능하며, 여기에서,
- 길이 (L)는 두께 (T)보다 크거나 이와 동일하며, 폭(W)은 두께(T)보다 크거나 이와 동일하며, 두께 (T)는 최대 50 nm이고,
- 탄소 나노물질은 (i) 그래핀 단층, 또는 (ii) 다수의 그래핀 단층을 포함하는 다층 그래핀을 포함하며, 여기에서 다수는 최대 30이며,
- 탄소 나노물질 조각 (100)이 탄소에 대한 산소의 몰 비가 0과 동일하거나 이보다 큰 기준 값을 갖는 영역 (110)을 포함하며,
- 탄소 나노물질 조각 (100)의 영역 (110)은 적어도 80 몰-%의 탄소 원자를 포함하며,
- 영역 (110)은, 제 1 영역 (120)이 상기 영역 (110)보다 더 작은 방식으로 제 1 영역 (120)을 포함하며; 이에 의해 영역 (110)과 제 1 영역 (120)은 영역(110)과 제 1 영역 (120)의 차집합에 포함되는 베이스 (115)를 규정하며;
- 제 1 광 펄스 시퀀스 특성 값을 갖는 제 1 광 펄스 시퀀스 (150)를 발생시키는 단계로서, 제 1 광 펄스 시퀀스 (150)가 적어도 하나의 광 펄스를 포함하는 단계, 및
- 베이스 (115)의 적어도 일부를 상기 제 1 광 펄스 시퀀스 (150)에 노출시키지 않으면서, 제 1 산소 함량을 갖는 제 1 처리 환경 (155)에서 상기 제 1 광 펄스 시퀀스 (150)에 제 1 영역 (120)을 노출시키는 단계를 포함하는 방법에 있어서;
- 제 1 광 펄스 시퀀스 (150)의 광 펄스가 400nm 내지 1100nm의 파장을 갖는 광자를 포함하도록 레이저를 사용하여 제 1 광 펄스 시퀀스 (150)를 발생시키고, 이에 의해
- 제 1 영역 (120)의 탄소 원자의 최대 10%가 제 1 영역 (120)으로부터 제거되고, 상기 제 1 광 펄스 시퀀스 (150)로의 제 1 영역(120)의 상기 노출 후, 제 1 영역(120)에서, 탄소 원자에 대한 산소의 몰 비가 기준 값보다 큰 제 1 값을 갖는 방식으로 2-광자 또는 다중광자 산화에 의해 탄소 나노물질 조각 (100)의 적어도 일부 탄소 원자를 제 1 영역 (120)에서 국부적으로 산화시키고; 이에 의해,
- 탄소 나노물질 조각 (100)의 제 1 영역 (120)을 패터닝하는 것을 특징으로 하는 방법. - 제 1항에 있어서, 탄소 나노물질이 부분적으로 산화된 그래핀 단층을 포함하는 방법.
- 제 1항에 있어서,
- 탄소 나노물질 조각 (100)이 제 2 영역 (130)을 추가로 포함하며,
- 제 1 영역 (120)의 상기 노출에 의해, 방법이 처리 파라미터 값의 제 1 집합을 이용하여 제 1 영역 (120)을 산화시키는 것을 포함하며, 여기에서 처리 파라미터 값의 제 1 집합은 제 1 광 펄스 시퀀스 특성 값 및 제 1 산소 함량을 포함하며; 방법은
- 처리 파라미터 값의 제 1 집합 중 적어도 하나의 처리 파라미터 값을 변경하여 처리 파라미터 값의 제 2 집합을 발생시키는 단계로서, 여기에서 처리 파라미터 값의 제 1 집합 중 적어도 하나의 처리 파라미터 값은 처리 파라미터 값의 제 2 집합에서의 처리 파라미터 값과 상이한 단계,
- 제 2 광 펄스 시퀀스 특성 값을 갖는 제 2 광 펄스 시퀀스 (160)를 발생시키는 단계로서, 상기 제 2 광 펄스 시퀀스 특성 값은 처리 파라미터 값의 제 2 집합에 포함되며, 제 2 광 펄스 시퀀스 (160)는 적어도 하나의 광 펄스를 포함하는 단계, 및
- (a) 제 2 산소 함량을 갖는 처리 환경에서 또는 (b) 제 2 산소 함량을 갖는 또 다른 처리 환경에서 상기 제 2 광 펄스 시퀀스 (160)에 상기 제 2 영역 (130)을 노출시키는 단계로서, 제 2 산소 함량은 처리 파라미터 값의 제 2 집합에 포함되며; 이에 의해
- 처리 파라미터 값의 제 2 집합을 이용하여,
- 제 2 영역 (130)의 탄소 원자의 최대 10%가 제 2 영역 (130)으로부터 제거되고, 상기 제 2 광 펄스 시퀀스 (160)로의 제 2 영역 (130)의 상기 노출 후, 제 2 영역(130)에서, 탄소 원자에 대한 산소의 몰 비가 기준 값보다 크며 제 1 값과 상이한 제 2 값을 갖는 방식으로 제 2 영역 (130)에서 적어도 일부 탄소 원자를 국부적으로 산화시키는 단계를 추가로 포함하는 방법. - 제 1항에 있어서, 탄소 나노물질이
- 탄소 나노튜브, 또는
- 서로 부착된 탄소 나노튜브의 네트를 추가로 포함하며;
- 방법이 그래핀을 패터닝하는 것을 포함하는 방법. - 제 1항에 있어서, 탄소 나노물질이
- 그래핀 단층, 또는
- 다수의 그래핀 단층을 포함하는 다층 그래핀으로 이루어지며, 상기 다수는 최대 30개인 방법. - 제 1항에 있어서,
- 제 1 광 펄스 시퀀스 (150)의 광 펄스가 109 W/(cm)2 내지 1014 W/(cm)2의 세기를 갖는 방법. - 제 6항에 있어서,
- 제 1 광 펄스 시퀀스 (150)의 광 펄스가 7x1010 W/(cm)2 내지 7×1011 W/(cm)2의 세기를 갖는 방법. - 제 1항에 있어서,
- 제 1 산소 함량이 적어도 0.4 mol/m3인 방법. - 제 8항에 있어서,
- 제 1 산소 함량이 0.4 mol/m3 내지 40 mol/m3인 방법. - 제 1항에 있어서,
- 베이스 (115)의 적어도 일부의 밴드 갭이 최대 0.01 eV이며,
- 제 1 영역 (120)이, 제 1 영역 (120)의 밴드 갭이 0.05 eV 초과가 되는 방식으로 산화되는 방법. - 제 3항에 있어서,
- 제 2 영역 (130)이, 제 2 영역 (130)의 밴드 갭이 제 1 영역(120)의 밴드 갭보다 크게 되는 방식으로 산화되는 방법. - 제 11항에 있어서,
- 제 2 영역 (130)이, 제 2 영역 (130)의 밴드 갭이 2 eV 초과가 되는 방식으로 산화되는 방법. - 제 1항에 있어서,
- 제 1 영역 (120)이 선폭 (WL), 선길이 (LL) 및 선두께를 가지며, 선폭 (WL)은 선 길이 (LL)에 수직이며 선 두께에 수직이며, 선폭 (WL)은 최대로(at most) 선길이 (LL)이며, 여기에서
- 선폭 (WL)은 전자 소자에 적합하게 구성된 방법.
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