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Stimulated Raman Scattering Microscopy: Theory and Applications in Nano Imaging
Stimulated Raman Scattering Microscopy: Theory and Applications in Nano Imaging
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104722
- ISBN
- 9798290647968
- DDC
- 540
- 저자명
- Gao, Xin.
- 서명/저자
- Stimulated Raman Scattering Microscopy: Theory and Applications in Nano Imaging
- 발행사항
- [Sl] : Columbia University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 240 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Min, Wei.
- 학위논문주기
- Thesis (Ph.D.)--Columbia University, 2025.
- 초록/해제
- 요약Stimulated Raman scattering (SRS) microscopy is an emerging chemical imaging modality that has gained tremendous attention in biomedical and material science due to its fast label-free imaging capabilities. Despite significant achievements, the field of SRS imaging is largely driving empirically, leaving many fundamental questions unanswered or controversial. In particular, there has been disagreement regarding the enhancement factor and detectability when compared to spontaneous Raman scattering.In this thesis, an alternative framework is presented to quantitatively understand SRS microscopy. Starting from a phenomenologically-defined stimulated Raman cross section (σSRS), the intrinsically molecular Raman response is revealed. Unlike the traditional spontaneous Raman cross section σRaman, σSRS turns out to be strong and even exceeding the electronic counterparts. σSRS is then connected with σRaman through both a heuristic method and the full quantum electrodynamics derivation, which encompass both phenomena quantitatively in the same framework. This new theory reveals a previously-unknown duality nature of Raman scattering, where both σRaman and σSRS can exhibit vastly different magnitudes for the same molecule, connected by the influence of vacuum zero-point fluctuations. This allows for the direct prediction of signal-to-noise-ratios (SNRs), vibrational population saturation, and photothermal effects. A mathematical model is built to discuss the fundamental detectability of both Raman techniques, which shows that SRS microscopy is almost always more sensitive than regular Raman microscopy. A diagrammatic approach reveals that SRS excels in high spatiotemporal regimes, explaining its advantage for microscopy applications.Next, I will use the new theoretical frame to demonstrate the superiority of SRS microscopy in nano imaging, and apply the technique in nanoparticles. In particular, three examples will be presented, including solid lipid nanoparticles (Chapter 3), poly-lactic-glycolic-acid (PLGA) nanoparticles (Chapter 4), and polystyrene nanoparticles as an example of nanoplastics (Chapter 5). The imaging of these three types of nanoparticles points towards a strategy called generalized bio-orthogonal imaging, which fully utilizes the rich chemical information contained in Raman spectra for biomedical research.
- 일반주제명
- Chemistry
- 일반주제명
- Nanotechnology
- 일반주제명
- Physical chemistry
- 일반주제명
- Biochemistry
- 키워드
- Nanoparticles
- 키워드
- Raman scattering
- 키워드
- Nano imaging
- 기타저자
- Columbia University Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104722
■006m o d
■007cr#unu||||||||
■020 ▼a9798290647968
■035 ▼a(MiAaPQ)AAI32121547
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aGao, Xin.
■24510▼aStimulated Raman Scattering Microscopy: Theory and Applications in Nano Imaging
■260 ▼a[Sl]▼bColumbia University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a240 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Min, Wei.
■5021 ▼aThesis (Ph.D.)--Columbia University, 2025.
■520 ▼aStimulated Raman scattering (SRS) microscopy is an emerging chemical imaging modality that has gained tremendous attention in biomedical and material science due to its fast label-free imaging capabilities. Despite significant achievements, the field of SRS imaging is largely driving empirically, leaving many fundamental questions unanswered or controversial. In particular, there has been disagreement regarding the enhancement factor and detectability when compared to spontaneous Raman scattering.In this thesis, an alternative framework is presented to quantitatively understand SRS microscopy. Starting from a phenomenologically-defined stimulated Raman cross section (σSRS), the intrinsically molecular Raman response is revealed. Unlike the traditional spontaneous Raman cross section σRaman, σSRS turns out to be strong and even exceeding the electronic counterparts. σSRS is then connected with σRaman through both a heuristic method and the full quantum electrodynamics derivation, which encompass both phenomena quantitatively in the same framework. This new theory reveals a previously-unknown duality nature of Raman scattering, where both σRaman and σSRS can exhibit vastly different magnitudes for the same molecule, connected by the influence of vacuum zero-point fluctuations. This allows for the direct prediction of signal-to-noise-ratios (SNRs), vibrational population saturation, and photothermal effects. A mathematical model is built to discuss the fundamental detectability of both Raman techniques, which shows that SRS microscopy is almost always more sensitive than regular Raman microscopy. A diagrammatic approach reveals that SRS excels in high spatiotemporal regimes, explaining its advantage for microscopy applications.Next, I will use the new theoretical frame to demonstrate the superiority of SRS microscopy in nano imaging, and apply the technique in nanoparticles. In particular, three examples will be presented, including solid lipid nanoparticles (Chapter 3), poly-lactic-glycolic-acid (PLGA) nanoparticles (Chapter 4), and polystyrene nanoparticles as an example of nanoplastics (Chapter 5). The imaging of these three types of nanoparticles points towards a strategy called generalized bio-orthogonal imaging, which fully utilizes the rich chemical information contained in Raman spectra for biomedical research.
■590 ▼aSchool code: 0054.
■650 4▼aChemistry
■650 4▼aNanotechnology
■650 4▼aPhysical chemistry
■650 4▼aBiochemistry
■653 ▼aNanoparticles
■653 ▼aRaman scattering
■653 ▼aSignal-to-noise-ratios
■653 ▼aNano imaging
■690 ▼a0485
■690 ▼a0652
■690 ▼a0487
■690 ▼a0494
■71020▼aColumbia University▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0054
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358577▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


