KR102579248B1 - 정밀 슬러리 내 대형 불순물 입자의 홀로그래픽 검출 및 특성화 - Google Patents
정밀 슬러리 내 대형 불순물 입자의 홀로그래픽 검출 및 특성화 Download PDFInfo
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Abstract
Description
도 1은 CMP 슬러리에서 대형 입자를 특성화하는 데 사용되는 인라인 홀로그래픽 비디오 현미경 사진이다.
도 2(a)는 10 억분의 1 농도의 불순물 입자를 함유한 CMP 슬러리의 실험적으로 기록된 홀로그램이다. 이 이미지는 마이크로미터 스케일 구에 의한 광산란으로 인한 세 가지 명확한 특징을 보여준다. 도 2(b)는 단일 구로 인한 특징부 주변의 관심 영역이다. 도 2(c)는 홀로그래픽 입자 특성화 이론의 예측에 대한 피팅을 보여준다. 도 2(d)는 나노미터 수준의 슬러리 입자로 인한 배경만을 보여주는 잔상이다.
도 3은 도 2(b)의 데이터에 대한 피팅의 방사형 프로파일을 도시한다. 음영 영역은 추정된 방사형 강도 프로파일의 통계적 불확실성을 나타내며, 이는 보다 어두운 곡선으로 표시된다. 밝은 곡선은 피팅된 결과다.
도 4a는 물에 분산된 콜로이드 실리카 구의 크기 및 굴절률의 공동 분포를 도시한다. 도 4b는 실리카 나노 입자의 슬러리에 분산된 구형의 동일한 샘플에 대한 비교 결과를 도시한다.
도 5는 냉동된 슬러리의 해동된 샘플에서 오염 물질 입자의 홀로그래픽 측정 크기 분포를 도시한다. 파선은 30 분의 초음파 처리 후 동일한 샘플에 대한 결과를 나타낸다.
도 6은 특정 구현 예와 함께 사용하기 위한 컴퓨터 시스템을 도시한다.
Claims (10)
- 샘플 내의 불순물을 특성화하는 방법으로서,
홀로그래픽 현미경의 관찰 볼륨을 통해 상기 샘플을 유동시키는 단계;
제 1 시기에 상기 관찰 볼륨 내의 상기 샘플의 홀로그래픽 비디오 현미경에 기초하여 제 1 홀로그래픽 이미지를 생성하는 단계;
관심 입자에 대응하는 하나 이상의 관심 영역에 대한 상기 제 1 홀로그래픽 이미지를 분석하는 단계;
상기 샘플과 광의 상호 작용에 의해 생성된 확산파의 기여에 대해 상기 관심 영역을 노멀라이징(normalizing)하는 단계;
상기 노멀라이징된된 관심 영역을 광 산란 이론에 피팅(fitting)하는 단계;
상기 노멀라이징된 관심 영역의 피팅에 기초하여, 관심 입자의 하나 이상의 특성을 특성화하는 단계를 포함하며,
관찰 볼륨의 깊이가 상기 샘플 내 레이저의 감쇠 깊이보다 작은, 방법. - 제 1 항에 있어서, 상기 샘플은 슬러리인 방법.
- 제 2 항에 있어서, 상기 슬러리는 200nm 이하의 입자를 포함하는 방법.
- 제 3 항에 있어서, 상기 관심 입자는 200 나노 미터 내지 20 마이크로미터의 크기를 갖는 방법.
- 제 1 항에 있어서, 피크 흐름은 초당 100 마이크로미터인 방법.
- 제 1 항에 있어서, 깊이 D의 샘플 셀을 선택하는 단계를 더 포함하는 방법.
- 제 1 항에 있어서, 상기 관심 입자를 특성화하는 단계는 반지름 및 굴절률을 결정하는 단계를 포함하는 방법.
- 슬러리 내 관심 입자를 특성화하는 방법으로서,
상기 슬러리를 홀로그래픽 현미경의 관찰 볼륨을 통해 유동시키는 단계 - 상기 슬러리는 관심 입자 및 유체 내에 슬러리 입자를 포함함;
레이저 빔을 상기 슬러리의 샘플과 상호작용시키는 단계;
제 1 시기에 상기 관찰 볼륨 내의 상기 슬러리의 홀로그래픽 비디오 현미경에 기초하여 제 1 홀로그래픽 이미지를 생성하는 단계 - 상기 제1 홀로그래픽 이미지는 관심 입자들 중 하나의 입자와 레이저 빔과의 상호작용에 의해 생성되는 산란 파로부터, 그리고 상기 슬러리 입자와 상기 산란 파 및 상기 레이저 빔의 상호작용에 의해 생성되는 확산파로부터, 광 필드를 레코딩함;
상기 제 1 홀로그래픽 이미지에 로렌츠 미에(Lorenz Mie) 분석을 적용하는 단계;
상기 로렌츠 미에 분석에 기초하여, 관심 입자를 특성화하는 단계를 포함하는, 방법. - 제 8 항에 있어서, 상기 슬러리와 광의 상호 작용에 의해 생성된 확산파의 기여도를 정량화하는 단계를 더 포함하는 것을 특징으로하는 방법.
- 제 8 항에 있어서, 상기 관심 입자를 특성화하는 단계는 반경 및 굴절률을 결정하는 단계를 포함하는 것을 특징으로하는 방법.
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US201562220786P | 2015-09-18 | 2015-09-18 | |
US62/220,786 | 2015-09-18 | ||
PCT/US2016/051946 WO2017048960A1 (en) | 2015-09-18 | 2016-09-15 | Holographic detection and characterization of large impurity particles in precision slurries |
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JP (1) | JP6929560B2 (ko) |
KR (1) | KR102579248B1 (ko) |
CN (1) | CN108351288B (ko) |
TW (1) | TWI700481B (ko) |
WO (1) | WO2017048960A1 (ko) |
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CN102365543A (zh) | 2009-01-16 | 2012-02-29 | 纽约大学 | 用全息视频显微术的自动实时粒子表征和三维速度计量 |
EP3218690B1 (en) | 2014-11-12 | 2022-03-09 | New York University | Colloidal fingerprints for soft materials using total holographic characterization |
EP3414517B1 (en) | 2016-02-08 | 2021-10-06 | New York University | Holographic characterization of protein aggregates |
WO2019230628A1 (ja) * | 2018-06-01 | 2019-12-05 | 株式会社堀場製作所 | 粒子径分布測定装置及び粒子径分布測定装置用プログラム |
WO2020102299A1 (en) * | 2018-11-16 | 2020-05-22 | Particle Measuring Systems, Inc. | Slurry monitor coupling bulk size distribution and single particle detection |
CN109297874B (zh) * | 2018-11-30 | 2023-09-22 | 浙江大学 | 一种用于测量运动颗粒粒径的全息实时测量方法及装置 |
US11543338B2 (en) * | 2019-10-25 | 2023-01-03 | New York University | Holographic characterization of irregular particles |
US11948302B2 (en) | 2020-03-09 | 2024-04-02 | New York University | Automated holographic video microscopy assay |
US11371947B2 (en) * | 2020-11-24 | 2022-06-28 | Kyndryl, Inc. | Generating a holographic image to visualize contaminants |
CN114354516A (zh) * | 2021-12-06 | 2022-04-15 | 上海电力大学 | 一种基于无透镜全息显微的变压器油杂质检测装置 |
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