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Hyejin Jang,Dongjae Kim,Hyowon Tak,남재욱,김태일 한국물리학회 2016 Current Applied Physics Vol.16 No.1
Mechanically ultra-robust, transparent and flexible electrodes assembled from silver nanowires (Ag NWs) are presented. Highly aligned NWs embedded in ultrathin (100 nm thick) adhesive are demonstrated for ultra-mechanical stability, negligible hysteresis against harsh bending on 0.15 mm radius of curvature. Instead of random arrangement, we utilize a grid array structure of NWs fabricated from multiple transfer printing. The grid structure allows to have low areal fraction, which leads to high transmittance, yet low sheet resistance, i.e. improved opto-electrical performance comparing with the random arrangement. In addition, a simplified lithography method of NW array is demonstrated. We strongly believe that such flexible and transparent electrodes can be used in many applications including optoelectronic devices and flexible/wearable electronics.
10개월 영아에서 발병한 단일 폐병변 랑게르한스세포 조직구증의 증례
장혜진 ( Hyejin Jang ),김윤희 ( Yoon Hee Kim ),김경원 ( Kyung Won Kim ),손명현 ( Myung Hyun Sohn ),유철주 ( Chuhl Joo Lyu ) 대한천식알레르기학회(구 대한알레르기학회) 2018 Allergy Asthma & Respiratory Disease Vol.6 No.3
Langerhans cell histiocytosis (LCH) is characterized by clonal proliferation and accumulation of abnormal dendritic (Langerhans) cells in various organs. Pulmonary involvement, although rare in children, has been reported in 20%-50% of childhood cases of multisystem LCH. Isolated pulmonary LCH in children, especially in infants, is still rarer, but should be suspected in those with cystic lung disease. We report a case of a 10-month-old boy who presented with chronic dyspnea and whose chest computed tomography (CT) scan demonstrated cystic lesions. Lung biopsy established the diagnosis of LCH; microscopy revealed a background of lymphocytes and eosinophils with kidney-shaped abnormal cells. These abnormal cells were positive for S-100, CD207 (Langerin), and CD1a on immunohistochemical staining. Chemotherapy was administered using a cytotoxic agent (vinblastine) and a steroid. After 12 weeks of induction chemotherapy, although no significant change in cyst size was noted on chest CT, clinical symptoms improved. Consolidation chemotherapy was then administered for 1 year. Thereafter, chest CT findings demonstrated a significant decrease in cyst size and a significant increase in the volume of normal lung parenchyma. Therefore, aggressive treatment of isolated pulmonary LCH in infants with severe tissue destruction and symptoms seems warranted. (Allergy Asthma Respir Dis 2018;6:179-183)