A5054327409- Microwave and Dielectric Measurement Techniques
- Near-Field Optical Microscopy
- Spectroscopy Techniques in Biomedical and Chemical Research
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Optic Sensors
- Nanowire Synthesis and Applications
- Antenna Design and Analysis
- Photonic and Optical Devices
- Magnetic Field Sensors Techniques
- Photoacoustic and Ultrasonic Imaging
- Magneto-Optical Properties and Applications
- Thermography and Photoacoustic Techniques
- Thin-Film Transistor Technologies
- Microwave Imaging and Scattering Analysis
- Organic Electronics and Photovoltaics
- Advanced Antenna and Metasurface Technologies
- Spectroscopy and Chemometric Analyses
- Plasmonic and Surface Plasmon Research
- Microfluidic and Bio-sensing Technologies
- Non-Invasive Vital Sign Monitoring
- Photonic Crystals and Applications
Sogang University
2019-2024
Yerevan State University
2019
We developed a microwave glucose sensor based on the modified first-order Hilbert curve design and measured concentration in aqueous solutions by using real-time near-field electromagnetic interaction technique. observed S21 transmission parameters of at resonant frequencies depend concentration. could determine 0–250 mg/dL range an operating frequency near 6 GHz. The minimum detectable signal was 0.0156 dB/(mg/dL) 1.92 mg/dL. simulation result for 0.0182 1.65 mg/dL, respectively....
Abstract In this study, a new optical method is presented to determine the concentrations of NaCl and glucose aqueous solutions by using thermo-elastic indicator microscope. By measuring microwave near-field distribution intensity, concentration changes were detected in 0–100 mg/ml range, when exposed irradiation at 12 GHz frequency. Microwave intensity decreased as or increased due absorption properties solution. This provides novel approach for monitoring biological liquids CCD sensor...
We present a new optical method for the electrical defect inspection indium tin oxide (ITO) thin film on glass substrate. The is based visualization of microwave heating distribution around an from thermal stress substrate ITO-glass. By using conventional polarized microscope with irradiation (6 ~ 15 GHz), we show that provides non-contact and non-destructive way to inspect transparent conductive minimum detectable length 1 mm parallel sensing defects distributed in 40 by 30 area. high...
We present a new method for the subsurface imaging of conductive object embedded in dielectric medium based on microwave by thermo-elastic optical indicator microscopy. The is near field distribution generated medium. When thickness small so that can emerge from medium, one find presence visualizing appearing surface By using method, we visualized containing with an irradiating microwave. observed strong fields were around appeared and their intensities dependent frequency polarization...
Abstract Visualizations of the microwave electric and magnetic near-field distributions radio-frequency (RF) filters were performed using technique thermoelastic optical indicator microscopy (TEOIM). New indicators based on periodic dielectric-metal structures designed for field visualization. Depending structure orientation, such metasurface-based allow separately visualization E x y components in-plane field. Numerical simulations conducted to examine working principle structures, results...
A new practical imaging technique was presented for metamaterial characterization and investigation by visualizations of the magnetic microwave near-field (H-MWNF) distributions on a metamaterial's surface using method thermo-elastic optical indicator microscopy (TEOIM). ITO-based transparent ceramic-based opaque structures were designed visualization. Depending incident field polarization, TEOIM system allows properties interaction behavior. The working principle periodic investigated...
This study presents a new in-vivo microwave imaging method to determine the blood glucose levels of mice directly from their tail using thermo-elastic optical indicator microscope (TEOIM). By measuring near-field distribution intensity around tail, changing trend level can be detected non-invasively when mouse is exposed 7 GHz irradiation. The electric field was visualized by metasurface-based indicator, showing that average values are proportional levels. clinical accuracy TEOIM monitoring...