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Molecular Transport in Nanopores with Fluctuations, Deformation, and Potential Leakage
Molecular Transport in Nanopores with Fluctuations, Deformation, and Potential Leakage
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260209102849
- ISBN
- 9798291563717
- DDC
- 621
- 저자명
- Noh, Yechan.
- 서명/저자
- Molecular Transport in Nanopores with Fluctuations, Deformation, and Potential Leakage
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 170 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Aluru, Narayana R.
- 학위논문주기
- Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
- 초록/해제
- 요약Nanofluidics is a rapidly growing field centered on the transport phenomena of fluids and ions in nanopores and membranes. In this thesis, we examine the impact of vibrational coupling between nanopores/membranes and fluids/ions on various transport properties through molecular dynamics simulations. Specifically, we investigate water desalination in fluctuating 2D porous membranes; the influence of interfacial vibrational coupling on surface wettability and wall-fluid friction; the activation of atomic transport via vibrational coupling; ion transport in 2D flexible nanoporous membranes; ion transport in electrically imperfect nanopores; and the scaling behavior of ion conductance in fluctuating 2D membranes.We investigate the impact of vibrational coupling between fluids and nanopores on transport phenomena. Our results show that vibrational coupling plays a crucial role in molecular transport phenomena. We demonstrate that the microscopic vibrations of nanopores/membranes can significantly affect transport properties, such as water permeation rate, surface wettability, wall-fluid friction, and ion transport. Furthermore, we show that atomic transport can be activated due to the enhanced force fluctuations caused by vibrational coupling. These findings have important implications for designing efficient and effective nanofluidic devices and membranes for various applications, including water desalination, ion separation, and molecular sensing.We study the scaling relation between ion conduction and ion concentration in nanopores. Our results reveal that the leakage of pore potential in thin nanopores can significantly affect ion transport. We find that the electric potential leaks out of the pore when the thickness of the pore is thin, and the degree of leakage determines the power law exponent between conductance and concentration. Moreover, we demonstrate that fluctuations in 2D porous membranes can alter the power-law exponent of ion conductance. These findings provide a fundamental understanding of microscopic ion transport and have important implications for estimating electrical properties of nanopores and manipulating ion current by deforming membranes.Overall, this thesis provides fundamental insights into molecular transport phenomena and highlights the importance of considering vibrational coupling effects in the design and optimization of nanofluidic devices and membranes. The significance of our research lies in offering valuable guidance for the development of improved nanofluidic devices and membranes for various applications, thus making a substantial impact on the nanofluidics community.
- 일반주제명
- Mechanical engineering
- 일반주제명
- Physical chemistry
- 일반주제명
- Materials science
- 일반주제명
- Nanoscience
- 키워드
- Water transport
- 키워드
- Nanopores
- 키워드
- Ion transport
- 키워드
- Nanofluidics
- 기타저자
- University of Illinois at Urbana-Champaign Mechanical Sci & Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798291563717
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a621
■1001 ▼aNoh, Yechan.
■24510▼aMolecular Transport in Nanopores with Fluctuations, Deformation, and Potential Leakage
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a170 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Aluru, Narayana R.
■5021 ▼aThesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
■520 ▼aNanofluidics is a rapidly growing field centered on the transport phenomena of fluids and ions in nanopores and membranes. In this thesis, we examine the impact of vibrational coupling between nanopores/membranes and fluids/ions on various transport properties through molecular dynamics simulations. Specifically, we investigate water desalination in fluctuating 2D porous membranes; the influence of interfacial vibrational coupling on surface wettability and wall-fluid friction; the activation of atomic transport via vibrational coupling; ion transport in 2D flexible nanoporous membranes; ion transport in electrically imperfect nanopores; and the scaling behavior of ion conductance in fluctuating 2D membranes.We investigate the impact of vibrational coupling between fluids and nanopores on transport phenomena. Our results show that vibrational coupling plays a crucial role in molecular transport phenomena. We demonstrate that the microscopic vibrations of nanopores/membranes can significantly affect transport properties, such as water permeation rate, surface wettability, wall-fluid friction, and ion transport. Furthermore, we show that atomic transport can be activated due to the enhanced force fluctuations caused by vibrational coupling. These findings have important implications for designing efficient and effective nanofluidic devices and membranes for various applications, including water desalination, ion separation, and molecular sensing.We study the scaling relation between ion conduction and ion concentration in nanopores. Our results reveal that the leakage of pore potential in thin nanopores can significantly affect ion transport. We find that the electric potential leaks out of the pore when the thickness of the pore is thin, and the degree of leakage determines the power law exponent between conductance and concentration. Moreover, we demonstrate that fluctuations in 2D porous membranes can alter the power-law exponent of ion conductance. These findings provide a fundamental understanding of microscopic ion transport and have important implications for estimating electrical properties of nanopores and manipulating ion current by deforming membranes.Overall, this thesis provides fundamental insights into molecular transport phenomena and highlights the importance of considering vibrational coupling effects in the design and optimization of nanofluidic devices and membranes. The significance of our research lies in offering valuable guidance for the development of improved nanofluidic devices and membranes for various applications, thus making a substantial impact on the nanofluidics community.
■590 ▼aSchool code: 0090.
■650 4▼aMechanical engineering
■650 4▼aPhysical chemistry
■650 4▼aMaterials science
■650 4▼aNanoscience
■653 ▼aWater transport
■653 ▼aNanopores
■653 ▼aIon transport
■653 ▼aSurface charge density
■653 ▼aWater desalination
■653 ▼aNanofluidics
■690 ▼a0548
■690 ▼a0565
■690 ▼a0794
■690 ▼a0494
■71020▼aUniversity of Illinois at Urbana-Champaign▼bMechanical Sci & Engineering.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0090
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17365889▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
