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Non-contact Measurements of Nanoscale Phonon and Electron Transport with Ultrafast, Coherent Short-Wavelength Light.
Non-contact Measurements of Nanoscale Phonon and Electron Transport with Ultrafast, Coherent Short-Wavelength Light.
상세정보
- 자료유형
- 학위논문
- Control Number
- 0017162662
- International Standard Book Number
- 9798384052272
- Dewey Decimal Classification Number
- 530
- Main Entry-Personal Name
- McBennett, Brendan Gray.
- Publication, Distribution, etc. (Imprint
- [S.l.] : University of Colorado at Boulder., 2024
- Publication, Distribution, etc. (Imprint
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- Physical Description
- 197 p.
- General Note
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- General Note
- Advisor: Murnane, Margaret.
- Dissertation Note
- Thesis (Ph.D.)--University of Colorado at Boulder, 2024.
- Summary, Etc.
- 요약The miniaturization of technology over the past few decades has generated enormous demand for experimental techniques capable of resolving material dynamics at ever shorter length and time scales. Ultrafast, coherent ultraviolet light provides a window into microscopic dynamics, combining femtosecond pulse durations, short wavelengths and tunable sensitivity to electronic and thermal processes. This thesis furthers the development of novel ultraviolet metrology tools and their application to nanoscale phonon and electron transport, where confinement and nonequilibrium conditions give rise to surprising new phenomena. Using extreme ultraviolet scatterometry, we extract the thermal and elastic properties of a 3D phononic crystal metalattice, nanostructured on 100 nm length scales, and combine the results with previous experiments and atomistic simulations to propose a new effective description of highly-confined heat flow in nanostructured semiconductors. An interlude discusses the challenges associated with contact- and fabrication-based approaches to studying transport phenomena in the context of the wider array of materials appearing in modern nanotechnology. The final chapter introduces a new non-contact deep-ultraviolet (6.3 eV) transient grating experiment, capable of investigating nanoscale phonon and electron transport in ultrawide-bandgap materials at femtosecond timescales. This new technique bridges previous laboratory and facility-scale capabilities and provides new opportunities for studying emergent nanoscale transport phenomena of relevance to next-generation energy and semiconductor technologies.
- Subject Added Entry-Topical Term
- Physics.
- Subject Added Entry-Topical Term
- Applied physics.
- Subject Added Entry-Topical Term
- Nanotechnology.
- Subject Added Entry-Topical Term
- Optics.
- Index Term-Uncontrolled
- Scatterometry
- Index Term-Uncontrolled
- Semiconductor technologies
- Index Term-Uncontrolled
- Femtosecond pulse durations
- Added Entry-Corporate Name
- University of Colorado at Boulder Physics
- Host Item Entry
- Dissertations Abstracts International. 86-03B.
- Electronic Location and Access
- 로그인을 한후 보실 수 있는 자료입니다.
- Control Number
- joongbu:654231
MARC
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■020 ▼a9798384052272
■035 ▼a(MiAaPQ)AAI31336046
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aMcBennett, Brendan Gray.▼0(orcid)0000-0001-7947-6551
■24510▼aNon-contact Measurements of Nanoscale Phonon and Electron Transport with Ultrafast, Coherent Short-Wavelength Light.
■260 ▼a[S.l.]▼bUniversity of Colorado at Boulder. ▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a197 p.
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Murnane, Margaret.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2024.
■520 ▼aThe miniaturization of technology over the past few decades has generated enormous demand for experimental techniques capable of resolving material dynamics at ever shorter length and time scales. Ultrafast, coherent ultraviolet light provides a window into microscopic dynamics, combining femtosecond pulse durations, short wavelengths and tunable sensitivity to electronic and thermal processes. This thesis furthers the development of novel ultraviolet metrology tools and their application to nanoscale phonon and electron transport, where confinement and nonequilibrium conditions give rise to surprising new phenomena. Using extreme ultraviolet scatterometry, we extract the thermal and elastic properties of a 3D phononic crystal metalattice, nanostructured on 100 nm length scales, and combine the results with previous experiments and atomistic simulations to propose a new effective description of highly-confined heat flow in nanostructured semiconductors. An interlude discusses the challenges associated with contact- and fabrication-based approaches to studying transport phenomena in the context of the wider array of materials appearing in modern nanotechnology. The final chapter introduces a new non-contact deep-ultraviolet (6.3 eV) transient grating experiment, capable of investigating nanoscale phonon and electron transport in ultrawide-bandgap materials at femtosecond timescales. This new technique bridges previous laboratory and facility-scale capabilities and provides new opportunities for studying emergent nanoscale transport phenomena of relevance to next-generation energy and semiconductor technologies.
■590 ▼aSchool code: 0051.
■650 4▼aPhysics.
■650 4▼aApplied physics.
■650 4▼aNanotechnology.
■650 4▼aOptics.
■653 ▼aScatterometry
■653 ▼aSemiconductor technologies
■653 ▼aFemtosecond pulse durations
■690 ▼a0605
■690 ▼a0752
■690 ▼a0652
■690 ▼a0215
■71020▼aUniversity of Colorado at Boulder▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162662▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
