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Ga doped ZnO 박막의 열처리 조건에 따른 구조 및 전기적 특성에 관한 연구
오수영,김응권,이태용,강현일,김봉석,송준태,Oh, Su-Young,Kim, Eung-Kwon,Lee, Tae-Yong,Kang, Hyun-Il,Kim, Bong-Seok,Song, Joon-Tae 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.9
In this study we present the effect of annealing temperatures on the structural, electrical and optical characteristics of Ga-doped ZnO (GZO) films. GZO target is deposited on coming 7059 glass substrates by DC sputtering. and then GZO films are annealed at temperatures of 400, 500, $600^{\circ}C$ in air ambient for 20 min. in this case of as-grown film, it shows the resistivity of $6{\times}10^{-1}{\Omega}{\cdot}cm$ and transmittance under 85%, whereas the electrical and optical properties of film annealed at $500^{\circ}C$ are enhanced up to $1.9{\times}10^{-3}{\Omega}{\cdot}cm$ and 90%, respectively.
RF 마그네트론 스퍼터링법으로 증착한 ZnO 박막의 증착온도에 따른 구조 및 전기적 특성
오수영,김응권,이태용,강현일,이종환,송준태,Oh, Su-Young,Kim, Eung-Kwon,Lee, Tae-Yong,Kang, Hyun-Il,Lee, Jong-Hwan,Song, Joon-Tae 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.11
In this study we investigated the variation of the substrate temperatures using RF sputtering to identify the effect on the structure and electrical properties by c-axis orientation of ZnO thin film. ZnO thin films were prepared on Al/Si substrate. In our experimental results, ZnO thin film at $300^{\circ}C$ was well grown with (002) peak of ZnO thin film, the thin film showed the high resistivity with the value of $5.9{\times}10^7\;{\Omega}cm$ and the roughness with 27.06 nm. As increased the substrate temperatures, the grain size of ZnO thin films was increased. From these results, we could confirm the suitable substrate temperature of ZnO thin films for FBAR(film bulk acoustic resonator).
저온공정을 이용한 AlN 박막의 우선배향성과 모폴로지에 관한 연구
오수영,김응권,이태용,강현일,유현규,송준태,Oh, Su-Young,Kim, Eung-Kwon,Lee, Tae-Yong,Kang, Hyun-Il,Yu, Hyun-Kyu,Song, Joon-Tae 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.5
In this paper, we investigated the (002) preferred orientation and morphology characteristics of AlN thin film by using reactive rf sputtering. Additionally, AlN thin films grown in the range from 150 to 300 W were studied under room temperature without substrate heating and post annealing. Sputtered AlN thin films were well grown on Si substrates and the (002) main peak in XRD patterns showed the highest intensity at 300 W with $0.25^{\circ}$ degree of full width at half-maximum (FWHM). As increased RF power, the surface roughness was increased from 1.0 to 3.4 nm. In Fourier transformation infrared spectroscopy (FTIR), $A_1$ (TO) and $E_1$ (TO) mode closed to AlN thin film confirmed the changes with increasing the intensity rate. From these results, we could confirm a chance of the growth of AlN thin film by only low temperature.
오수영 ( Soo Young Oh ) 대한주산의학회 2015 Perinatology Vol.26 No.1
주산기 치료의 발전에 따라서 극단적 조산(extreme preterm birth)의 생존율은 최근 꾸준히 증가하고 있다. 이러한 생존경계출산(periviable birth)이 임박한 산모에 대한 적절한 상담과 주산기 처치는 산과 의사와 신생아 의사 모두에게 가장 어려운 문제 중의 하나이다. 본 종설에서는 1) 최근 생존경계출산의 주산기 처치에 관한 어떠한 국제적 지침들이 제시되어 왔는지 살펴보고, 2) 생존경계출산에 대한 산과적 처치 중 산전 스테로이드 투여와 황산마그네슘 치료에 대한 문헌들을 고찰하며 3) 마지막으로 생존경계출산의 산과적 처치에 관한 우리나라의 모체태아의학 교수진들의 진료 패턴에 대한 설문 조사 결과를 제시하고자 한다. Survival of extreme preterm birth infants had recently been increasing steadily. Proper counseling and optimal management of women impending periviable birth is one of the most intricate situations in both obstetricians and pediatricians. This article aimed 1) to discern several international recommendations on perinatal care of periviable birth proposed recently, 2) to provide reviews of best available evidence on the use of antenatal corticosteroids and magnesium sulfate in impending periviable birth, and 3) to present the results from survey on the obstetrical management in periviable birth targeting maternal-fetal medicine faculty members of the tertiary hospitals in our country.
의료분쟁조정법 중 산과 무과실보상 제도가 산부인과 전문의의 향후 진로에 미치는 영향
오수영 ( Soo Young Oh ),권자영 ( Ja Young Kwon ),신정호 ( Jung Ho Shin ),김암 ( Ahm Kim ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.7
Objective: The number of resident applicants in obstetrics and gynecology in South Korea is decreasing every year. Recently, the government legislated for obstetric no-fault compensation act which obligated obstetrics and gynecology doctors to pay for 50% of the budget to compensate for the unfavorable delivery outcome that the medical provider is not responsible for. The act was faced with obstetrics and gynecology doctors`` and in-trainees`` resentment for putting unfair financial burden on the shoulders of the medical providers and hospitals in the absence of malpractice.In light of this, the purpose of this study was to investigate the influence of the obstetric nofault compensation act on the future career of obstetrics and gynecology residents as obstetricians. Methods: We conducted a survey of 4th grade obstetrics and gynecology residents (n=59) on influence of the obstetric no-fault compensation act on the future career as obstetricians through questionnaire. Results: The result from this survey showed that this act has driven the residents away from providing obstetrical care in the future which will inevitably lead to lack of delivery service in the rural areas. Conclusion: We do conclude that the enforcement ordinance of the obstetric no-fault compensation act should be revised.
오수영 ( Soo Young Oh ) 대한주산의학회 2013 Perinatology Vol.24 No.4
The optimal management in pregnancies complicated isolated oligohydramnios between 34+0 and 36+6 weeks of gestation is not established yet. Although previous studies reported that increased risks of adverse perinataloutcomes were observed in pregnancies with oligohydramnios, it is notable that these studies include cases with maternal or fetal complications such as hypertensive disorders or fetal growth restriction. Therefore, it remains unclear that the increased adverse perinatal outcomes from oligohydramnios are caused fromoligohydramniositself or from maternal or fetal complications. Meanwhile, recent evidences demonstrated that neonates born at late preterm are also at increased risks for prematurity related complications such as respiratory distress syndrome, intraventricular hemorrhage, neonatal hypoglycemia, necrotizing enterocolitis and cerebral palsy as well compared with term neonates. With this background, this article was aimed to review recent literatures on the optimal management in pregnancies with isolated oligohydramnios between 34+0 and 36+6 weeks of gestation and to present the results from survey of obstetricians in our country on this topic.
오수영 ( Soo Young Oh ) 대한주산의학회 2011 Perinatology Vol.22 No.3
Intrapartum fetal heart rate monitoring (FHR) was introduced in the 1970`s in this country for the hope of preventing intrapartum hypoxic fetal events. The proper interpretation and the following management of intrapartum FHR are among the items that the obstetricians should be well informed of. This review summarizes the standardized FHR monitoring definition and interpretation based on the report from National Institute of Child Health and Human Development in 2008 and offers updated guidelines suggested by American College of Obstetrics and Gynecology in 2010. This review also details on the intrauterine resuscitation and finally demonstrates recent evidences about the impact of standardization of intrapartum management on adverse perinatal outcomes.