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Stimulated Raman Scattering Microscopy: Theory and Applications in Nano Imaging
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  
Signal-to-noise-ratios
키워드  
Nano imaging
기타저자  
Columbia University Chemistry
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
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MARC

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■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.

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