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        <rdf:li rdf:resource="https://scholar.dgist.ac.kr/handle/20.500.11750/60115" />
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    <dc:date>2026-04-04T17:29:58Z</dc:date>
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  <item rdf:about="https://scholar.dgist.ac.kr/handle/20.500.11750/60115">
    <title>Incomplete chirality of exceptional points in asymmetric optical microcavity</title>
    <link>https://scholar.dgist.ac.kr/handle/20.500.11750/60115</link>
    <description>Title: Incomplete chirality of exceptional points in asymmetric optical microcavity
Author(s): Kim, Hyundong; Eom, Youngmin; Lee, Hoyeon; Cho, Yanni; Lee, Seungwoo; Gwak, Sunjae; Yu, Hyeon-Hye; Yi, Chang-Hwan; Kim, Chil-Min
Abstract: A chiral exceptional point (EP) in an optical microcavity emerges from the coalescence of even and odd modes with identical azimuthal modal numbers under asymmetric perturbation. While the chirality of such EPs is well understood in circular disks with asymmetrically positioned Rayleigh scatterers, it becomes more intricate in asymmetric microcavities, where the contributing modes can exhibit nontrivial wave morphology according to chaotic deformation. To explore this, we consider a stand-alone microcavity composed of one half ellipse and two quarter ellipses, for which EPs exhibit incomplete chirality. Our analysis reveals that this incomplete chirality originates from prior mode coupling. After the prior mode coupling, only the quasinormal modes within each superposed mode pair that have identical azimuthal modal numbers but opposite parities contribute to the chirality at EPs. Consequently, the chirality of the EP modes remains incomplete, depending on the relative weight of the original mode pair. Finally, we analyze the formation of EPs and their chiral properties in a generic asymmetric microcavity, providing insights into the underlying mechanisms of incomplete chirality.</description>
    <dc:date>2025-09-30T15:00:00Z</dc:date>
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  <item rdf:about="https://scholar.dgist.ac.kr/handle/20.500.11750/58340">
    <title>예외점을 이용한 바이오 센서</title>
    <link>https://scholar.dgist.ac.kr/handle/20.500.11750/58340</link>
    <description>Title: 예외점을 이용한 바이오 센서
Author(s): 류진혁; 김칠민; 이창환
Abstract: 예외점을 이용한 바이오 센서가 개시된다. 본 발명의 일실시예의 바이오 센서는, 바이오 분자의 부착에 의해 발생하는 예외점의 파괴로부터 파장분리된 광신호를 출력하는 바이오 센싱부, 상기 파장분리된 광신호를 각각 파장분리된 전기신호로 변환하는 검출부, 상기 파장분리된 전기신호에 의한 맥놀이 주파수를 측정하는 분석부, 및 상기 맥놀이 주파수에 의한 파장차이를 결정하여, 이로부터 상기 바이오 분자의 양을 결정하는 결정부를 포함한다.</description>
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  <item rdf:about="https://scholar.dgist.ac.kr/handle/20.500.11750/57672">
    <title>마이크로 공진기 및 이를 이용한 센서</title>
    <link>https://scholar.dgist.ac.kr/handle/20.500.11750/57672</link>
    <description>Title: 마이크로 공진기 및 이를 이용한 센서
Author(s): 김칠민
Abstract: 마이크로 공진기 및 이를 이용한 센서가 개시된다. 본 발명의 일실시예의 마이크로 공진기는, 원통형으로서, 제1재질의 내부 공진기와, 상기 내부 공진기의 측면 표면에 배치되고, 제1재질에 레이저 발진이 가능한 원자 또는 분자가 함유된 제2재질로 구성되는 코팅층을 포함한다.</description>
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  <item rdf:about="https://scholar.dgist.ac.kr/handle/20.500.11750/57071">
    <title>예외점을 이용한 바이오 센서</title>
    <link>https://scholar.dgist.ac.kr/handle/20.500.11750/57071</link>
    <description>Title: 예외점을 이용한 바이오 센서
Author(s): 김칠민</description>
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