A5081772392- Ultrasonics and Acoustic Wave Propagation
- Photoacoustic and Ultrasonic Imaging
- Ferroelectric and Piezoelectric Materials
- Flow Measurement and Analysis
- Thermography and Photoacoustic Techniques
- Acoustic Wave Resonator Technologies
- Non-Destructive Testing Techniques
- Ultrasound and Hyperthermia Applications
- Atmospheric Ozone and Climate
- Analytical Chemistry and Sensors
- CCD and CMOS Imaging Sensors
- Photocathodes and Microchannel Plates
- Electrical and Bioimpedance Tomography
- Laser Material Processing Techniques
North Carolina State University
2021-2025
Johns Hopkins University
2017
Clean energy production continues to grow as an international priority. Solar and nuclear power plants are being designed operate at high temperatures, some Generation IV expected or above 850 °C. Monitoring of such structures requires advanced sensors able survive in environments that would easily destroy conventional sensors. Bismuth Silicon Oxide (Bi12SiO20; BSO) is gaining attention a robust piezoelectric material can extreme temperatures. In this work, we present temperature impedance...
The astronomical community continues to be interested in suitable programmable slit masks for use multiobject spectrometers (MOSs) on space missions. There have been ground-based MOS utilizing digital micromirror devices (DMDs), and they proven highly accurate reliable instruments. This paper summarizes the results of a continuing study investigate performance DMDs under conditions associated with deployment. includes response accelerated heavy-ion radiation, vibration mechanical shock loads...
A new piezoelectric crystal, KCsMoP2O9 (KCMP), was successfully grown by the Kyropoulos method. The electro-elastic properties of KCMP crystal were characterized impedance full set elastic constants determined solving Christoffel equation. Remarkably, exhibits a large face-shear coefficient d14 = 16.2 pC/N, surpassing that extensively studied ordered langasite Ca3TaGa3Si2O14 (d14 10.4 pC/N). fundamental shear horizontal (SH0) wave transducer developed, leveraging face-shear-mode wafers....
This study aims to investigate a laser ultrasound (LUS) transducer for high-temperature (>100 °C) applications. For decades, many researchers have investigated efficient LUS transducers, yet studies on transducers capable of performing at the condition are rarely found in literature. Most current still utilize polymer-based composite material, that is, not stable varying temperature conditions. introduces liquid metallic (LM) utilizes field's metal, which has high thermal expansion...
This article proposes a noninvasive liquid level sensing technique using laser-generated ultrasound waves for nuclear power plant applications. Liquid sensors play an important role of managing the coolant system safely and stably in structure. Current techniques are mostly intrusive, performing inside fluidic structure, which is disadvantageous terms regular maintenance system. Furthermore, typical intrusive do not perform under varying environmental conditions such as temperature...