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양자점 뭉쳐진 나노 와이어 제작을 위한 나노피펫-AFM을 이용한 3D프린팅 기술 소개
배연주(Yeonju Bae),안상민(Sangmin An) 한국물리학회 2024 새물리 Vol.74 No.1
In this study, we would like to introduce a 3D printing technology on the nanoscale that utilizes nanophotonics and a modified atomic force microscope (AFM) for the assembly of quantum dots. Quantum dots are semiconductor nanostructures with zero-dimensional crystal structures at the nanometer scale, exhibiting unique optical properties due to quantum confinement effects. These quantum dots, with sizes on the order of a few nanometers, have garnered significant attention in various optical fields. By printing these quantum dots onto 2D materials or other substrates in desired shapes, we open up possibilities for controlling their energy structures and utilizing them in various ways. In this technology, we inject a quantum dot solution into the nanophotonic tip and use an AFM to precisely deposit the quantum dots at desired locations and shapes. In the initial stages of this technology, we achieve this by ejecting the quantum dot solution onto the surface through the holes in the nanophotonic tip. Simultaneously, as we retract the nanophotonic tip vertically, the liquid containing quantum dots evaporates, leading to the formation of bundled quantum dot nanowires. This innovative approach holds promise for a wide range of applications where precise manipulation of quantum dots at the nanoscale is crucial.
송인한(In Han Song),권세원(Se Won Kwon),김정수(Jung-Soo Kim),유정원(Jung-Won You),박장호(Jang Ho Park),김리자(Lija Kim),김우식(Woosik Kim),김현지(Hyunjee Kim),김현진(Jeniffer Hyunjin Kim),김지은(Ji Eun Kim),안상민(Sangmin An) 한국콘텐츠학회 2014 한국콘텐츠학회논문지 Vol.14 No.7
자살예방을 위한 인식개선 캠페인은 국가적 자살예방대책의 핵심사업 중 하나이다. 본 연구는 자살예방 국가전략을 성공적으로 수행하고 있다고 평가되는 뉴질랜드·미국·아일랜드·스코틀랜드·호주의 5개국과 우리나라의 캠페인을 비교·분석하였다. 미국 보건복지부가 제시한 보건커뮤니케이션 캠페인 가이드라인을 토대로 각국의 캠페인을 (1) 목표의 명확성, (2) 표적화 전략의 적절성, (3) 메시지 전략의 적합성, (4) 이행의 효율성 측면에서 살펴보았다. 그 결과, 해외 캠페인들의 공통적 요소로 (1) 분명한 목표가 포함된 캠페인 명칭, (2) 사회 맥락을 고려한 캠페인 대상의 표적화, (3) 구체적인 행동지침을 포함한 슬로건, (4) 정부와 민간의 유기적 협력이 발견되었다. 이를 근거로 우리나라 캠페인이 발전하기 위해서는 보다 전략적 체계를 갖추고, 구체적인 대상에게 메시지가 전달될 수 있도록 하며, 보다 대중적인 매체를 활용하고, 민간 및 지방조직과의 유기적 협력을 강화하며, 체계적인 효과성 평가를 병행할 것을 제언하였다. Public awareness campaign is the core factor of the national suicide prevention strategies. Korea’s current campaign needs to be more systematically developed. This study analyzed the national-level campaigns for suicide prevention of New Zealand, USA, Ireland, Scotland, and Australia whose campaigns were known to be successful, and compared them with those of Korea. With the analysis framework based on the ‘Guideline for Effective Health Communication Campaigns’ by the U.S. Department of Health and Human Services, we examined the campaigns from the dimensions of (1) clarity of goals, (2) appropriacy of targeting strategies, (3) suitability of messaging strategies, and (4) efficiency of performance. The results show that effective campaigns for suicide prevention have the following common factors: (1) campaign appellations which include clear goals, (2) targeting at risk groups considering social contexts, (3) slogans which contains specific action guidelines, and (4) close relationships between public and private sectors. On this basis, future directions for more effective suicide prevention media campaigns in Korea are discussed.