A5102830245- Advanced Optical Sensing Technologies
- Advanced MEMS and NEMS Technologies
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Acoustic Wave Resonator Technologies
- Optical measurement and interference techniques
- Ocular and Laser Science Research
- Electrowetting and Microfluidic Technologies
- Asphalt Pavement Performance Evaluation
- Image Processing Techniques and Applications
- Conducting polymers and applications
- GaN-based semiconductor devices and materials
- Advanced Optical Imaging Technologies
- Robotics and Sensor-Based Localization
- Organic Electronics and Photovoltaics
- Surface Roughness and Optical Measurements
- Semiconductor Lasers and Optical Devices
- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Optical Systems and Laser Technology
- Advanced Memory and Neural Computing
- Infrastructure Maintenance and Monitoring
- Radio Frequency Integrated Circuit Design
- Microwave and Dielectric Measurement Techniques
Dankook University
2015-2018
Kwangwoon University
2014
We present the design, fabrication, and measurement results of an electromagnetic biaxial microscanner with mechanical amplification mechanism. A gimbaled scanner two distinct single-crystal silicon layer thicknesses integrated copper coils has been fabricated combination surface bulk micromachining processes. magnet assembly consisting array permanent magnets a pole piece placed under substrate to provide high strength lateral magnetic field oriented 45° perpendicular scanning axes....
This paper presents electromagnetically actuated 2-axis scanning micromirror with large aperture and tilting angle for laser pointing applications such as LIDAR systems. The the plate size of 3 mm in diameter was fabricated using gimbaled single crystal silicon a coil assembled permanent magnet forming radial magnetic field. realized on SiOG (Silicon Glass) wafer 4 photolithography masks assembly optimized to maximize torque. Horizontal resonance frequency manufactured measured 1.421 kHz...
We present the design, fabrication, and analysis of an electromagnetic biaxial scanning micromirror for a high definition laser pico-projection display system. The device consists microfabricated double gimbaled structure mechanical amplification horizontal scan angle set uniquely designed permanent magnets magnetic field generation in small volume. With fabricated 1.2-mm-diameter micromirror, maximum 52° at 28.9 kHz 33° 60 Hz have been obtained vertical scans, respectively. effective volume...
In this paper, we present a LIDAR(Light Detection And Ranging) system as an application of the MEMS(Micro Electro Mechanical System) scanner that was developed in our previous research. The electromagnetically actuated 2-axis driving MEMS operated about X axis at 1.4 kHz and Y 10 Hz is applied for LIDAR provides measurement distance to object. We adopt indirect time flight method measurement. measured through single laser spot scanning beam using scanner. 1, 2 3 m were 118±15 cm, 207.8±23.4...
This paper describes a 2.45GHz 6kW CW GaN solid state microwave generator development which was mainly focused on it's compact size (507 × 392.4 192mm (L W H)) with 56% of high SSPA head efficiency. The core part this generator, SiC transistor operates as class B amplifier to maximize efficiency, 74%. Entire design process packaging transistor, design, output power combining, exterior and software control is optimized generate stable continuous wave signal.
In this study, we present an innovative method for enhancing the performance of organic electrolyte-gated transistors (OEGTs) through integration nanostructures into their active layers. These increase surface area at interface between electrolyte and semiconductor, effectively boosting charge transport characteristics. Such structural enhancements also contribute to significant improvements in achieving high bias stability. The OEGT, characterized by carrier mobility low-voltage operation,...
In this paper, end gap coupled flexible CPW resonators at 5.8 GHz on 32-μm polyimide film are presented in order to confirm influences such as resonant frequency and quality factor of the resonator with respect extent flexibility substrate. To define criterion perform EM simulation, for first time, a new bent configuration is suggested. Also, before designing resonator, analysis between computed measured characteristic impedances performed function parameter related structure. The responses...