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Hot carrier 및 NBTI 에 의한 P채널 MuGFET 소자열화
김태하(Tae Ha Kim),황달성(Dal Sung Hwang),임영순(Young Soon Im),김용택(Yong Taek Kim),박종태(Jong Tae Park) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.10
본 논문에서는 hot carrier와 NBTI에 의한 p-channel MuGFETs(Multiple Gate FETs) 소자열화 특성을 측정 분석 하였다. 채널 폭에 따른 소자열화를 분석하기 위하여 fin 높이는 60nm 이며, 폭은 55nm, 60nm, 65nm, 3종류의 tripple gate 형태인 MuGFET 를 측정하였다. 보다 정확한 NBTI 측정을 위하여 on-the-f1y 방법을 사용했으며, 포화 드레인 전류량 변화로 소자의 열화 정도를 온도 변화와 스트레스 시간에 따라 분석 하였다. NBTI 스트레스 후에는 fin width가 좁을수록 소자열화가 증가하였고, hot carrier 스트레스의 경우는 fin width가 넓을수록 소자열화가 증가하였다. Hot carrier와 NBTI 스트레스 모두 온도가 높아질수록 소자열화가 증가했는데, hot carrier 스트레스의 경우 온도가 증가하고 fin width가 넓어질수록 hot carrier와 NBTI의 상호작용으로 인해 소자열화가 증가하는 것으로 사료된다.
원외부 후하소뇌 대 동맥류의 수술적 제거 : 증례보고 Case Report
황병욱,오남훈,유수일,김진만,황달성,하인선,이용성 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.12
The authors report a rare case of right distal posterior inferior cerebellar artery(PICA) aneurysm arising from just distal to its vermian branch. A 36-year-old female patient presented with a sudden onset of headache, nausea, dizziness and ataxia without any other neurologic deficit. On brain computerized tomographic(CT) scan and magnetic resonance imaging(MRI), a well-defined round mass was detected just behind the fourth ventricle. On transfemoral vertebral angiogram(TFVAG), it was confirmed as a saccular aneurysm arising from the vermian branch of the right PICA. The aneurysm was initially directly clipped through bilateral suboccipital approach. Postoperative follow up angiogram after two weeks revealed a more enlarged aneurysm and an incompletely clipped neck. After making sufficient exposure of the aneurysm, the neck was reclipped and the sac removed. Postoperative results were uneventful.
오남훈,유수일,김진만,황달성,하인선,이용성 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.5
Spontaneous cervical epidural hematoma is an infrequent entity that usually requires emergency decompression on account of impending neurologic deficit. We present a case of a 36-year-old man who visited our emergency room complaining of severe neck pain with progressive weakness of both upper extrmities. On cervical MRI fusiform epidural hematoma was found extending from the fifth to the seventh cervical vertebrae. Emergency surgical evacuation was performed. The patient was fully recovered and discharged uneventfully
조정현,황병욱,오남훈,유수일,황달성,하인선,이용성 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.12
The authors have experiend a case of histiocytosis-X A 7-arsdd male patient had three tender masses, one on the right parietal region, another on the left parietal region, the other on the left Occipital region and revealed exophthalmus on his left side. Plain skull films showed multiple punched out skull defects and on lumbar spine films, collapse of body of second lumbar vertebra was detected. Among the masses, the largest right parietal one was excised totally. The find diagnosis revealed histiocytosis-X on pathologic basis and he was given subsequent chemotheraphy.
오남훈,유수일,김진만,황달성,하인선,이용성 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.5
The authors retrospectively analized the radiographs and medical records of 135 consecutive patients who underwent minimaly invasive spinal surgery from January. 1990 to December, 1994 at our institution. Among these, 72 patients have had chemonucleolysis and ethers percutaneous automated lumbar discectomy(PALD). The success rate was similar in both groups. ie. 75% in chemonucleoiysis and 74.6% in PALD by Macnab's criteria. The higher success rate could be obtained in 1) younger age below 30. 2) predominant sciatica than lower back pain. 3) eccentric bulged disc with minimal degeneration. 4) abscent of minimal neurologic dsficits. In conclusion. provided patients are carefully screened, minimal invasive spinal surgery is more preferable over conventional surgery, providing a safe and effective therapeutic alternative to many patients suffering from herniated lumbar disc.