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Preparation of Nanoribbons and Monolayers for Fundamental Characterization of Optical, Electronic, and Magnetic Properties
Preparation of Nanoribbons and Monolayers for Fundamental Characterization of Optical, Electronic, and Magnetic Properties
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105611
- ISBN
- 9798265427113
- DDC
- 553.41
- 서명/저자
- Preparation of Nanoribbons and Monolayers for Fundamental Characterization of Optical, Electronic, and Magnetic Properties
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 102 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Liu, Fang.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약van der Waals materials, like graphene, have gained gross interest in materials science, chemistry, physics, and adjacent fields due to their access, versatility, and promise in electronic devices. These layered structures have weak interlayer interactions that allow for isolation of one layer (monolayer) from the natural bulk crystal by exfoliation (i.e. scotch tape exfoliation1, gold-assisted methods2, etc.). The model system of transition metal dichalcogenides (TMDs) exhibits dimensionally dependent properties, where three-dimensional (3D) crystals function as insulators and isolated two-dimensional (2D) monolayers act as semiconductors. This initial confinement of TMDs into 2D materials sheets that are a few atoms in thickness has been widely studied as synthesis and exfoliation methods became more accessible. Studied properties include light absorption/emission, chemical stability/reactivity, and electronic performance for a wide variety of electronic applications.Throughout my PhD I greatly expanded the field of 2D materials through collaborative projects by exploring how TMD monolayers can act as atomically thin waveguides,3 contribute to up conversion processes when interfaced with plasmonic gold nanoparticles,4 electronically and physically interact with other TMDs in heterobilayers,5 integrate with metal halide perovskites and metasurfaces in spin-injection heterostructures, and more. These studies hold great implications for next generation electronics for light emission, light manipulation, and tailored chemical sensing/reactivity, and all were accessed through large area exfoliation of monolayer TMDs.Further confinement of 2D sheets into one-dimensional (1D) nanoribbons had been predicted to lead to new optical, electronic, and magnetic phenomena that could enhance their viability in integrated circuits to keep up with Moore's Law. In Chapter 1 I disclose how the availability of nanoribbon species beyond graphene has been limited due to non-transferable preparation methods. I combatted this problem by developing the first versatile technique to prepare monolayer, single-crystalline and parallel aligned nanoribbons from a variety of bulk vdW crystals in.6 This opens the gateway for fundamental experimental characterization of 2D nanoribbon structures in comparison to their bulk and large area monolayer counterparts.This dissertation work showcases this collaborative excursion and highlights the experimental optical, electronic, and magnetic properties of exfoliated nanoribbons to gauge their footing in optoelectronic, sensing, and catalysis applications. In Chapter 2, initial fundamental characterization of nanoribbons is carried out in relation to their monolayer counterparts finding that there is an influence of strain, aspect ratio, and doping on properties like photoluminescence, second harmonic generation, and electronic/electrostatic environment respectively.I then move on to more targeted studies on nanoribbons. This includes an investigation into the impact of localized strain on sharp photoluminescence features in Chapter 3.7 Next, I offer an exploration into local doping distributions in WSe2 nanoribbons via spatially resolved tip-enhanced Raman spectroscopy in Chapter 4. Finally, I revisit the implications of the experimental findings with an outlook towards integrated circuits and sensors in Chapter 5.References1. K. S. Novoselov, A. K. Geim, S. V. Morozov, et al. Science. 2004, 306, 666. 2. F. Liu, W. Wu, Y. Bai, et al. Science. 2020, 367, 903.
- 일반주제명
- Gold
- 일반주제명
- Investigations
- 일반주제명
- Nanomaterials
- 일반주제명
- Molecular beam epitaxy
- 일반주제명
- Energy
- 일반주제명
- Graphene
- 일반주제명
- Transistors
- 일반주제명
- Engineers
- 일반주제명
- Integrated circuits
- 일반주제명
- Lasers
- 일반주제명
- Etching
- 일반주제명
- Teaching assistants
- 일반주제명
- Optical properties
- 일반주제명
- Crystal lattices
- 일반주제명
- Analytical chemistry
- 일반주제명
- Electrical engineering
- 일반주제명
- Nanotechnology
- 일반주제명
- Optics
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■007cr#unu||||||||
■020 ▼a9798265427113
■035 ▼a(MiAaPQ)AAI32316401
■035 ▼a(MiAaPQ)Stanfordgq098sy2161
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a553.41
■1001 ▼aSaunders, Ashley Paige.
■24510▼aPreparation of Nanoribbons and Monolayers for Fundamental Characterization of Optical, Electronic, and Magnetic Properties
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a102 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Liu, Fang.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼avan der Waals materials, like graphene, have gained gross interest in materials science, chemistry, physics, and adjacent fields due to their access, versatility, and promise in electronic devices. These layered structures have weak interlayer interactions that allow for isolation of one layer (monolayer) from the natural bulk crystal by exfoliation (i.e. scotch tape exfoliation1, gold-assisted methods2, etc.). The model system of transition metal dichalcogenides (TMDs) exhibits dimensionally dependent properties, where three-dimensional (3D) crystals function as insulators and isolated two-dimensional (2D) monolayers act as semiconductors. This initial confinement of TMDs into 2D materials sheets that are a few atoms in thickness has been widely studied as synthesis and exfoliation methods became more accessible. Studied properties include light absorption/emission, chemical stability/reactivity, and electronic performance for a wide variety of electronic applications.Throughout my PhD I greatly expanded the field of 2D materials through collaborative projects by exploring how TMD monolayers can act as atomically thin waveguides,3 contribute to up conversion processes when interfaced with plasmonic gold nanoparticles,4 electronically and physically interact with other TMDs in heterobilayers,5 integrate with metal halide perovskites and metasurfaces in spin-injection heterostructures, and more. These studies hold great implications for next generation electronics for light emission, light manipulation, and tailored chemical sensing/reactivity, and all were accessed through large area exfoliation of monolayer TMDs.Further confinement of 2D sheets into one-dimensional (1D) nanoribbons had been predicted to lead to new optical, electronic, and magnetic phenomena that could enhance their viability in integrated circuits to keep up with Moore's Law. In Chapter 1 I disclose how the availability of nanoribbon species beyond graphene has been limited due to non-transferable preparation methods. I combatted this problem by developing the first versatile technique to prepare monolayer, single-crystalline and parallel aligned nanoribbons from a variety of bulk vdW crystals in.6 This opens the gateway for fundamental experimental characterization of 2D nanoribbon structures in comparison to their bulk and large area monolayer counterparts.This dissertation work showcases this collaborative excursion and highlights the experimental optical, electronic, and magnetic properties of exfoliated nanoribbons to gauge their footing in optoelectronic, sensing, and catalysis applications. In Chapter 2, initial fundamental characterization of nanoribbons is carried out in relation to their monolayer counterparts finding that there is an influence of strain, aspect ratio, and doping on properties like photoluminescence, second harmonic generation, and electronic/electrostatic environment respectively.I then move on to more targeted studies on nanoribbons. This includes an investigation into the impact of localized strain on sharp photoluminescence features in Chapter 3.7 Next, I offer an exploration into local doping distributions in WSe2 nanoribbons via spatially resolved tip-enhanced Raman spectroscopy in Chapter 4. Finally, I revisit the implications of the experimental findings with an outlook towards integrated circuits and sensors in Chapter 5.References1. K. S. Novoselov, A. K. Geim, S. V. Morozov, et al. Science. 2004, 306, 666. 2. F. Liu, W. Wu, Y. Bai, et al. Science. 2020, 367, 903.
■590 ▼aSchool code: 0212.
■650 4▼aGold
■650 4▼aInvestigations
■650 4▼aNanomaterials
■650 4▼aMolecular beam epitaxy
■650 4▼aEnergy
■650 4▼aGraphene
■650 4▼aTransistors
■650 4▼aEngineers
■650 4▼aScanning electron microscopy
■650 4▼aIntegrated circuits
■650 4▼aLasers
■650 4▼aEtching
■650 4▼aTeaching assistants
■650 4▼aOptical properties
■650 4▼aCrystal lattices
■650 4▼aAnalytical chemistry
■650 4▼aElectrical engineering
■650 4▼aNanotechnology
■650 4▼aOptics
■690 ▼a0791
■690 ▼a0486
■690 ▼a0544
■690 ▼a0652
■690 ▼a0752
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360728▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


