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Ui Yeon Nam(남의연),Yu Mi Woo(우유미),Yeon Uk Kim(김연욱),Jae Hun Yang(양재훈),Pyeong An Kim(김평안),Jae Jun Lee(이재준),Jung Hwan Park(박정환) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Herein, a outstanding performance Cu nanowires with sheet resistance of 17Ω sq<SUP>-1</SUP> and transmittance of 88% was fabricated by flash-induced plasmonic nanowelding process. The high-intensity flashlight (in the region of visible wavelength) significantly enhanced plasmonic welding of Cu NW intersections without any oxidation. Simultaneously, near-infrared (NIR) spectrum of flash light interlocked the interface between polyethylene terephthalate substrate and Cu NWs. To investigate the adhesion enhacement of interlocked Cu NWs, we conducted a quantitative peel test. the measured NW interfacial fracture force increased by 208% compared to that of a pristine Cu NW electrode. To demonstrate versatile uses of flash-induced Cu NW conductors, transparent resistive memory devices and touch screen panel were successfully fabricated on plastics by employing the flash-welded excellent performance Cu NW network.
청소년의 불안정 애착과 학교적응 간의 관계에서 자기수용의 매개효과
윤의연,남숙경 인지발달중재학회 2019 인지발달중재학회지 Vol.10 No.2
This research investigated the mediating effect of self-acceptance on the relationship between attachment style using sub-measures of anxious attachment and avoidant attachment and school adjustment. Three hundred and seventy-two adolescents in Gwangju participated in this study. First, attachment style, self-acceptance, and school adjustment were found to be significantly related, levels of insecure attachment being found to be negatively correlated with both self-acceptance and school adjustment. Mediation effects of self-acceptance on the relationship between insecure attachment style and adaptation to school were also significant: Self-acceptance had a full mediation effect on the relationship between anxious attachment and school adjustment, and a partial mediation effect on the relationship between avoidant attachment and school adaptation. The results suggested a need for interventions to increase levels of self-acceptance and stability in attachment. 본 연구에서는 청소년의 불안정 애착과 학교적응과의 관계에서 자기수용의 매개효과를 살펴보고자 하였다. 이를 위해 광주광역시에 소재한 중학생과 고등학생을 대상으로 설문을 실시하였고, 최종 372부를 분석에 사용하였다. 본 연구에서의 결과를 살펴보면 다음과 같다. 첫째, 불안정 애착, 자기수용, 학교적응간의 상관분석 결과, 불안정 애착수준이 낮을수록, 자기수용의 정도가 높을수록 학교적응을 더 잘하는 것으로 나타났다. 또한 불안정 애착수준이 낮을수록 자기수용을 잘 할 수 있음을 보고 하였다. 둘째, 불안정 애착과 학교적응의 관계에서 자기수용의 매개효과를 검증한 결과, 불안정 애착의 하위요인 중 불안애착과 학교적응의 관계에서 자기수용은 완전매개의 효과를 나타냈고, 회피애착과 학교적응의 관계에서 자기수용은 부분매개의 효과를 나타내었다. 이와 같은 결과는 애착 안정성과 자기수용 수준을 높이기 위한 개입의 필요성을 제시하였다.
레이저 기반 플라즈모닉 어닐링을 통한 은 나노입자 자가 생성 및 소결 공정과 이를 활용한 메탈메쉬 전극 기반 투명 웨어러블 히터
황윤식,남의연,김연욱,우유미,허재찬,박정환 한국전기전자재료학회 2022 전기전자재료학회논문지 Vol.35 No.5
Laser-induced plasmonic sintering of metal nanoparticles (NPs) is a promising technology to fabricate flexible conducting electrodes, since it provides instantaneous, simple, and scalable manufacturing strategies without requiring costly facilities and complex processes. However, the metal NPs are quite expensive because complicated synthesis procedures are needed to achieve long-term reliability with regard to chemical deterioration and NP aggregation. Herein, we report laser-induced Ag NP self-generation and sequential sintering process based on low-cost Ag organometallic material for demonstrating highquality microelectrodes. Upon the irradiation of laser with 532 nm wavelength, pre-baked Ag organometallic film coated on a transparent polyimide substrate was transformed into a high-performance Ag conductor (resistivity of 2.2 10-4 Ω·cm). To verify the practical usefulness of the technology, we successfully demonstrated a wearable transparent heater by using Ag-mesh transparent electrodes, which exhibited a high transmittance of 80% and low sheet resistance of 7 Ω/square.