A5023557615- Advanced MEMS and NEMS Technologies
- Organ Transplantation Techniques and Outcomes
- Mechanical and Optical Resonators
- Acoustic Wave Resonator Technologies
- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease and Transplantation
- 3D IC and TSV technologies
- Photonic and Optical Devices
- Transplantation: Methods and Outcomes
- Microwave Engineering and Waveguides
- Force Microscopy Techniques and Applications
- Liver Disease Diagnosis and Treatment
- Renal Transplantation Outcomes and Treatments
- Respiratory viral infections research
- Microwave and Dielectric Measurement Techniques
- Electronic Packaging and Soldering Technologies
- Cancer-related Molecular Pathways
- Nasolacrimal Duct Obstruction Treatments
- Advanced Sensor and Energy Harvesting Materials
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Thyroid Cancer Diagnosis and Treatment
- Infection Control in Healthcare
- Osteoarthritis Treatment and Mechanisms
- Facial Trauma and Fracture Management
- Medical Device Sterilization and Disinfection
University of Alberta
2025
Seoul National University
2000-2024
Seoul National University Hospital
2007-2023
Seoul National University Bundang Hospital
2007-2020
Pusan National University Hospital
2009
National Radio Research Agency
2009
Korea Institute of Science and Technology
2006
This paper details single-crystalline silicon (SCS) direct contact radio frequency microelectromechanical systems (RF MEMS) switch designed and fabricated using an SiOG (silicon-on-glass) substrate, so as to obtain higher fabrication performance uniformity compared with a conventional metal switch. The mechanical electrical performances of the have been tested. In comparison metallic MEMS switch, we can productivity by SCS, because it has very low stresses superior thermal characteristics...
Broad-band analog and digital reflection-type phase shifters (RTPSs), showing constant shift over 1:3 bandwidth, have been developed using microelectromechanical systems (MEMS) technology. Two-unit RTPSs centered at two different frequencies cascaded to achieve flat responses a wide frequency band. Each shifter uses air-gap overlay coplanar-waveguide couplers for low-loss 3-dB coupling bridge-type MEMS capacitors reflective terminations. The fabricated shows the average insertion loss of 3.5...
In this paper, a single-pole double-throw(SPDT) switching circuit was demonstrated using direct contact MEMS switches and double resonance technique for Q-band V-band applications. The size of the fabricated SPDT is about 1 mm/spl times/2 mm. are formed on CPW transmission lines actuated with electrostatic force. single-throw(SPST) switch shows insertion loss 0.34 dB isolation 15.5 at 50 GHz, respectively. responses were measured frequencies from 0 to 100 GHz. below better than 19 35 GHz 60...
Proposed is the concept of an RF MEMS contact switch with high isolation over 50 GHz, and experiment at work succeeds in showing its feasibility. High was achieved using two directional motions, namely vertical lateral movement part, contrary to typical switches that generally use one motions. Comb parallel plate actuators enable part move directions. The silicon on glass (SiOG) process utilised fabricate a substrate. characteristics are simulated measured from 50–110 GHz prove capabilities...
Immunological factors play a pivotal role in the outcomes of solid organ transplantation. We aimed to elucidate effects donor-specific antibodies (DSAs) and ABO compatibility on living donor liver transplantation (LDLT) outcomes.
Suk Kyun Hong, Minseob Kim, Youngjin Jae-Yoon Jaewon Lee, Jiyoung Su Young Jeong-Moo YoungRok Choi, Nam-Joon Yi, Kwang-Woong Kyung-Suk Suh. Ann Hepatobiliary Pancreat Surg -0001;0:. https://doi.org/10.14701/ahbps.24-020
The actuation voltage of microelectromechanical system (MEMS) metal switches was investigated at temperatures ranging from 10 to 290 K. investigation shows a 50% increase in the low temperature. A comparison has been made using published model and showed similar increment
A simple and successful design for a half-coaxial-like transmission line using benzo cyclo butene (BCB) is presented. The proposed half-coaxial was fabricated conventional surface micromachining without additional removal of the sacrificial layer. measured showed less than 1 dB/cm loss at 20 GHz. Simulated results CPW modelling are compared with data good agreement reported.
In this paper we report a technology for lightweight, small radio-frequency (rf) microelectromechanical system packaging with short electrical path length. We used an ultrathin silicon substrate as the substrate. Via holes vertical feed-through were fabricated on thin wafer. Then, bottom-up gold electroplating was applied to fill via holes. For hermetic sealing, gold-gold direct metal bonding in sealing line. The packaged rf device has reflection loss below and insertion of . Therefore,...
Suk Kyun Hong, Minseob Kim, Youngjin Jaeyoon Hyun Hwa Choi, Jaewon Lee, Jiyoung Su young Jeong-Moo YoungRok Nam-Joon Yi, Kwang-Woong Kyung-Suk Suh. Ann Liver Transplant -0001;0:. https://doi.org/10.52604/alt.23.0010
Suk Kyun Hong, Minseob Kim, Youngjin Jae-Yoon Jaewon Lee, Jiyoung Su young Jeong-Moo YoungRok Choi, Nam-Joon Yi, Kwang-Woong Kyung-Suk Suh. Ann Liver Transplant 2023;3:94-9. https://doi.org/10.52604/alt.23.0015
Short-term weight reduction (SWR) programs have been demonstrated to ameliorate liver steatosis, transforming marginal donors into viable candidates for living donor transplantation (LDLT).These interventions impact objective indices of health through non-invasive imaging tools, expanding the pool potential donors.Graft-to-recipient ratio (GRWR) is one important factors in recipient safety, therefore, needs be considered graft selection.A low GRWR can lead impaired function, while a high...
A novel single crystalline silicon diamond-shaped atomic force microscope (AFM) cantilever for accurate mechanical tests of MEMS structures is presented. strip bending test micromachined gold thin film specimens has been performed using the proposed AFM cantilever. The experimental results show that a more and uniform possible with this new by suppressing lateral motions conventional beam-shaped
In this paper, the concept of a probe array for measurement biological properties is firstly proposed and we implement novel using MEMS technology. Through work, experimentally show feasibility micromachined application. Until now, there have been no researches about dielectric measurement. Many researchers performed liquids or samples single which manufactured by laser machining. They should perform repetitive experiments point in order to extract information multiple points probe. Moreover...