서브메뉴
검색
Combined-Effects Transient Behavior of Piezoelectric Surface Acoustic Wave (SAW) Resonators
Combined-Effects Transient Behavior of Piezoelectric Surface Acoustic Wave (SAW) Resonators
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153106
- ISBN
- 9798384088660
- DDC
- 530
- 저자명
- Chesser, Ryan.
- 서명/저자
- Combined-Effects Transient Behavior of Piezoelectric Surface Acoustic Wave (SAW) Resonators
- 발행사항
- [Sl] : The Ohio State University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 111 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Khafizov, Marat.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2024.
- 초록/해제
- 요약The nuclear industry continues evolving towards more reliable and powerful operations, and instrumentation technology must keep pace to ensure safety and consistency throughout the next generation of nuclear reactor designs. Sensor technology in extreme environments continues developing to meet these and other developing needs. These devices must tolerate very high temperatures, high irradiation dose, and related microstructural transformation. Piezoelectric surface acoustic wave (SAW) resonators are a class of microelectromechanical systems (MEMS) that utilize the modulation of surface acoustic waves as a physical sensing mechanism. A distributed network of small, lightweight, inexpensive sensors would allow improved characterization of reactor operating conditions and assist in the development and benchmarking of related models.Irradiation response of SAW devices must be thoroughly characterized. Device response is a result of competing mechanisms including defect generation, diffusion, recombination, and absorption. These mechanisms impact material properties including elastic constant, piezoelectric constant, and dielectric constant.This research utilizes in-situ observation of SAW resonators to characterize material behavior in a high-temperature neutron irradiation. Lithium niobate (LiNbO3), bulk aluminum nitride (AlN), and thin-film aluminum nitride (AlN/Al2O3) devices were tested up to 500°C temperature and 1.9 x 1012 n/cm2 s neutron flux. Device resonant frequency, which is related to ultrasonic wave velocity, shifts in response to temperature and neutron flux. The dominant mechanism responsible for the altered wave velocity is determined by applying analytical models and identifying the best fit via correlation coefficient. Trends of the fitted parameters with temperature and neutron flux describe the characterization captured in this analysis. In SAW devices, elastic constants have been shown to be the primary mechanism of acoustic wave velocity and consequently, resonant frequency response. In this research, device crystallography was oriented along the direction with the largest (and most sensitive) elastic constants in order to induce the most significant frequency response. This is the \uD835\uDC3611 parameter for aluminum nitride and the \uD835\uDC3633 parameter for lithium niobate.This work finds that temperature transients induce a unary defect migration response in the device resonant frequency. This response is characterized by an exponential equation describing the transient frequency response. Equilibrium defect concentration changes with temperature, leading to a linear trend between equilibrium resonant frequency and temperature. The slope of this trend defines the temperature coefficient of frequency for each device. Neutron irradiation induces a binary recombination response due to interstitials and vacancies created by thermal neutron bombardment. This response follows a hyperbolic tangent equation to describe the transient frequency with neutron flux. A linear trend was determined between equilibrium device resonant frequency and neutron flux. The slope of this trend defines the neutron flux coefficient of frequency for each device.
- 일반주제명
- Physics
- 일반주제명
- Engineering
- 일반주제명
- Nuclear physics
- 일반주제명
- Materials science
- 일반주제명
- Nuclear engineering
- 키워드
- Nuclear reactors
- 키워드
- Radiation
- 기타저자
- The Ohio State University Nuclear Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017164945
■00520250211153106
■006m o d
■007cr#unu||||||||
■020 ▼a9798384088660
■035 ▼a(MiAaPQ)AAI31674161
■035 ▼a(MiAaPQ)OhioLINKosu1704405527336402
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aChesser, Ryan.
■24510▼aCombined-Effects Transient Behavior of Piezoelectric Surface Acoustic Wave (SAW) Resonators
■260 ▼a[Sl]▼bThe Ohio State University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a111 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Khafizov, Marat.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2024.
■520 ▼aThe nuclear industry continues evolving towards more reliable and powerful operations, and instrumentation technology must keep pace to ensure safety and consistency throughout the next generation of nuclear reactor designs. Sensor technology in extreme environments continues developing to meet these and other developing needs. These devices must tolerate very high temperatures, high irradiation dose, and related microstructural transformation. Piezoelectric surface acoustic wave (SAW) resonators are a class of microelectromechanical systems (MEMS) that utilize the modulation of surface acoustic waves as a physical sensing mechanism. A distributed network of small, lightweight, inexpensive sensors would allow improved characterization of reactor operating conditions and assist in the development and benchmarking of related models.Irradiation response of SAW devices must be thoroughly characterized. Device response is a result of competing mechanisms including defect generation, diffusion, recombination, and absorption. These mechanisms impact material properties including elastic constant, piezoelectric constant, and dielectric constant.This research utilizes in-situ observation of SAW resonators to characterize material behavior in a high-temperature neutron irradiation. Lithium niobate (LiNbO3), bulk aluminum nitride (AlN), and thin-film aluminum nitride (AlN/Al2O3) devices were tested up to 500°C temperature and 1.9 x 1012 n/cm2 s neutron flux. Device resonant frequency, which is related to ultrasonic wave velocity, shifts in response to temperature and neutron flux. The dominant mechanism responsible for the altered wave velocity is determined by applying analytical models and identifying the best fit via correlation coefficient. Trends of the fitted parameters with temperature and neutron flux describe the characterization captured in this analysis. In SAW devices, elastic constants have been shown to be the primary mechanism of acoustic wave velocity and consequently, resonant frequency response. In this research, device crystallography was oriented along the direction with the largest (and most sensitive) elastic constants in order to induce the most significant frequency response. This is the \uD835\uDC3611 parameter for aluminum nitride and the \uD835\uDC3633 parameter for lithium niobate.This work finds that temperature transients induce a unary defect migration response in the device resonant frequency. This response is characterized by an exponential equation describing the transient frequency response. Equilibrium defect concentration changes with temperature, leading to a linear trend between equilibrium resonant frequency and temperature. The slope of this trend defines the temperature coefficient of frequency for each device. Neutron irradiation induces a binary recombination response due to interstitials and vacancies created by thermal neutron bombardment. This response follows a hyperbolic tangent equation to describe the transient frequency with neutron flux. A linear trend was determined between equilibrium device resonant frequency and neutron flux. The slope of this trend defines the neutron flux coefficient of frequency for each device.
■590 ▼aSchool code: 0168.
■650 4▼aPhysics
■650 4▼aEngineering
■650 4▼aNuclear physics
■650 4▼aMaterials science
■650 4▼aNuclear engineering
■653 ▼aPiezoelectric materials
■653 ▼aSurface Acoustic Wave
■653 ▼aNuclear reactors
■653 ▼aRadiation
■653 ▼aTemperature sensor
■690 ▼a0605
■690 ▼a0794
■690 ▼a0552
■690 ▼a0537
■690 ▼a0756
■71020▼aThe Ohio State University▼bNuclear Engineering.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164945▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
