In submicron MOSFET devices, maintaining the ratio between the channel length (L) and thechannel depth (D) at 3:1 or larger is known to be critical in preventing deleterious short-channel effects. Inthis study, n-type SOI-MOSFETs with a channel length of 0.1µm and a Si film thickness (channel depth) of0.033µm (L:D=3:1) were virtually fabricated using a TSUPREM-4 process simulator. To form functioningtransistors on the very thin Si film, a protective layer of 0.08µm-thick surface oxide was deposited prior tothe source/drain ion implantation so as to dampen the speed of the incoming As ions. The p-type boron dopingconcentration of the Si film, in which the device channel is formed, was used as the key variable in the processsimulation. The finished devices were electrically tested with a Medici device simulator. The result showedthat, for a given channel doping concentration of 1.9~2.5×1018cm−3, the threshold voltage was 0.5~0.7V, andthe subthreshold swing was 70~80mV/dec. These value ranges are all fairly reasonable and should form a‘magic region’ in which SOI-MOSFETs run optimally.

본 연구에서는 SOI 구조를 이용한 50μm 두계의 규소 태양전지의 이용 가능성과 제한사항을 제시하기 위하여, interdigitated contact을 이용한 전극을 형성하도록 전지를 설계한 후 단계별 사진공정을 통해 태양전지를 제조하였다. Bonded SOI wafer를 이용하여 제조된 50μm 두께의 결정질 규소 태양전지의 효율은 전극간격이 1100μm과 base width가 35μm인 경우에서 11.5%로 가장 높은 값을 나타내었다. 또한 실험결과로부터 전면전극을 이용한 태양전지의 구조는 power loss를 최소화하는 최적의 base fraction을 적용하는 것이 필요하며, 전지의 효율은 fill factor에 강한 의존성을 나타내기 때문에 fill factor loss를 최소화하는 설계조건이 필요함을 알 수 있었다.

Sol-gel법으로 제작한 여러 종류의 Zr/Ti비율을 갖고 있는 PZT박막의 전지적 특성과 신뢰성 특성을 상부 백금 전극을 sputtering으로 증착하고 Ar 기체로 반응성 이온 식각(RIE)방법으로 패턴을 형성한 후 열처리온도의 변화에 따라 조사하였다. Hysteresis loop특성을 되찾게 하였다. Zr/Ti 비율이 감소함에 따라 voltage shift가 증가하였으며 internal field가 없어지는 열처리 온도가 증가하였다. Zr/Ti비율이 감소함에 따라 초기 잔류 분극은 증가하였으나 switching 횟수가 증가됨에 따라 잔류 분극이 급속히 감소하였다.

Bacillus amyloliquefaciens GR4-5 was isolated from the rhizosphere soil of Korean ginseng and displayed broad-spectrum suppression of ginseng root rot pathogens. The survivability of B. amyloliquefaciens GR4-5 in soil was investigated under three different conditions; indoor, outdoor ─ of which soil was put in 14 mL tube after treatment ─ and field environments. Soil samples were collected over a fourweek period from three experimental designs, and assessed for 16S rRNA gene copy number by quantitative polymerase chain reaction (qPCR). In outdoor condition, the 16S rRNA gene copy number of Bacillus spp. was 8.35 log copies g soil-1 immediately after the GR4-5 treatment. Two weeks later, the 16S rRNA gene copy number of Bacillus spp. (6.70 log copies g soil-1) was similar to that of the control (6.38 log copies g soil-1). In indoor condition, the 16S rRNA gene copy number of Bacillus spp. maintained in a certain level for a longer period than those in outdoor and field. The 16S rRNA gene copy number of Bacillus spp. in field experiment was reduced faster than that of outdoor condition. Our results show that B. amyloliquefaciens GR4-5 can survive in bulk soil for 1 week, indicating its potential use as a biocontrol agent following 7 day application intervals. This study presents that outdoor microcosm system design could be a useful method to assess easily the survivability of beneficial microorganisms.

En général, le réquisitoire définitif du procureur est rédigèe apres examen du dossier de la procédure. On ne peut pas trouver l'article sur le réquisitoire définitif du procureur dans le Code de procédure pénale coréene, mais 1l existe dans le règlement de procédure pénale coréene. Ainsi, selon alinéa 2 de l'article 118 du celui-ci, dans le réquisitoire définitif du procureur il est intérdi d'ajouter ni les preuves ni les choses suscéptibles de pouvoir donnerr les préjuges sur le fait.. En droit coréen, on respecte cette exigence comme le soi-disant principe de l'unité de réquisitoire définitif du procureur. L'arrêt de la cour suprême coréene du 22 oct. 2009 a décidé que ce soi-disant principe de l'unité de réquisitoire définitif du procureur n'est pas supérieur aux princpes essentiels (idées fondamentales) du proèes pénal coréen comme l'idéologie de vérité dans le procès pénal, l'équité de procédure criminelle et le soi-disant principe de centralisation de l'audience et les débats. A mon avis, ce soi-disant principe n'est que le simple exigence du réglement de procédure pénale coréene. De ce point de vue, il est naturell d'accepter la constatation de cet arrêt de la cour suprême. A propos du soi-disant principe de l'unité de réquisitoire définitif du procureur, il n'est pas question de savoir si la véritable confrontation existe entre la procédure de type accusatoire et celle de type inquisitoire. En réel, Il nous faudra non seulement bien absorber les mérites de deux sortes de procédure, mais aussi techniquement réduire le danger de ces défauts.