Young Ju Kim
이화여자대학교 의예과 · 의학
Young Ju Kim 교수의 연구실은 메타물질 기반의 초박공 및 광역대 마이크로파 흡수체, 특히 편광 불감성과 다중 밴드 흡수 성능을 구현한 구조물에 중점을 두고 있습니다. 전자기파의 입사와 반사 제어를 위한 임피던스 매칭 및 표면 전류 분포 분석을 통해 고효율 흡수 메커니즘을 규명하고 있으며, 실험적 검증을 통한 실현 가능성을 확보하고 있습니다. 또한, 생물의학 분야에서는 락타미산균과 관련된 산모의 미생물군과 조기산모의 연관성, 정신건강 스크리닝 도구의 한국어 버전 개발 등 다양한 분야로 연구 영역을 확장하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
We propose polarization-independent and dual-broadband metamaterial absorbers at microwave frequencies. This is a periodic meta-atom array consisting of metal-dielectric-multilayer truncated cones. We demonstrate not only one broadband absorption from the fundamental magnetic resonances but additional broadband absorption in high-frequency range using the third-harmonic resonance, by both simulation and experiment. In simulation, the absorption was over 90% in 3.93-6.05 GHz, and 11.64-14.55 GHz.
We numerically and experimentally studied an ultrathin and broadband perfect absorber by enhancing the bandwidth with embedded resistors into the metamaterial structure, which is easy to fabricate in order to lower the Q-factor and by using multiple resonances with the patches of different sizes. We analyze the absorption mechanism in terms of the impedance matching with the free space and through the distribution of surface current at each resonance frequency. The magnetic field, induced by the
These findings suggest that LPC induces the overproduction of NO, which may increase the oxidative stress on endothelial cells and lead to endothelial cell injury.
This result suggests that Lactobacillus abundance-based classification of vaginal fluid may reveal the microbiome associated with PTB. Further studies are needed to investigate the mechanism underlying the link between the microbiome and PTB.
The Korean version of the GHQ-12 could be used to screen for individuals at high risk of mental disorders, namely mood and anxiety disorders.
