http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Na, Bock Soon,Jung, Soon-Won,Moon, Yu Gyeong,Park, Chan Woo,Park, Nae-Man,Oh, Ji-Young,Lee, Sang Seok,Koo, Jae Bon,Koo, Kyung-Wan American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.10
<P>Future stretchable electronic systems require memory devices that combine low power consumption with mechanical stretchability. We fabricated stretchable ferroelectric memory transistors (FMTs) on a polydimethylsiloxane substrate with patterned polyimide island structures by using an amorphous InGaZnO semiconductor and ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) gate insulator. The FMTs exhibited a field-effect mobility of 7.5 cm(2)V(-1)s(-1) and a current on/off ratio of 10(7) at a relatively low operating voltage. Furthermore, the fabricated memory transistors showed no noticeable changes in their electrical performance for large strains of up to 50%.</P>
Jung, Soon-Won,Na, Bock Soon,You, In-Kyu,Koo, Jae Bon,Yang, Byung-Do,Oh, Jae-Mun Korean Physical Society 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.1
We demonstrate a novel organic antifuse technology on plastic at entirely plastic-compatible temperatures. All processes were performed at temperatures below 135 A degrees C. Our memory cell consists of a printed organic transistor and an organic capacitor. The data in the memory cell are selectively programmed by electrically breaking the capacitor. The organic capacitor acts like as an antifuse capacitor because it is initially open and becomes permanently shorted by applying a high voltage. The memory data are read out by sensing the current in the memory cell. The printed organic one-time programmable memory is suitable for storing small amounts of data such as in low-cost radio-frequency identification tag.
스트레스가 지방산 조성이 다른 식이를 섭취한 흰쥐의 면역 기능에 미치는 영향
최정순,나혜복 서울여자대학교 자연과학연구소 1996 자연과학연구논문집 Vol.7 No.-
본 실험에서는 stress가 지방산 조성이 다른 고지방식이를 준 Spague Dawley종 흰주 23마리의 면역기능에 미치는 영향을 알아보고자 하였으며 식이지방으로는 옥수수유와 참치유를 20%수준으로 7주간 공급하였다. Stressor로는 쥐 cage를 4/5정도 차단하여 외부와의 고립감을 느끼도록 하였으며 이들의 영향을 알아보기 위하여 체중, 식이효율, 장기 무게와 mitogen을 사용하여 면역능력을 측정하였고 다음과 같은 결과를 얻었다. 1. 체중, 체중증가및 식이효율은 stress에 의한 영향은 없었으나 지방의 종류에 의한 차이를 보였으며 참치유를 섭취한 군에서 유의적으로 낮았다. 2. 장기무게중 stress에 희해 간의 무게는 유의적인 증가하였으면 adrenal gland, 체중당 adrenal gland무게는 감소하였다. 식이지방에 따라 체중당의 간, spleen, adrenal gland무게에서는 옥수수유군이 참치유군보다 유의적으로 낮게 나타났으며 thymus의 경우는 옥수수유군에서 높은 값을 나타내었다. 3. Stress에 따른 면역기능을 알아보기 위하여 mitogen으로써 ConA를 처리한 경우에는 면역세포의 증식이 낮아졌으면 PHA의 경우에는 면역세포의 증식이 활발해지는 경향을 보였다. 식이지방으로는 옥수수유군에서 높은 경향을 나타내었다. PHA/ConA ratio 경우는 전반적으로 stress에 의해 약간 증가하는 경향을 나타내었다. 4. 세포내 단백질 합성능력은 유의적인 차이를 나타내지 않았으나 stress에 의해 대부분의 mitogen으로 유도한 면역세포 증식반응이 낮아졌다. 식이지방으로는 참치유군에서 높은 경향을 나타내었다. 이상의 결과를 종합해보면 식이지방의 종류와 stress가 면역기능을 담당하는 기관의 무게에 영향을 주는 것으로 나타났으며 면역능력에는 유의적인 영향을 나타내지 않았으나 stress에 의해 면역능력이 증가하는 경향을 보였고 참치유군보다는 옥수수유군에서 면역능력이 높은 경향을 보였으며 이들에 대한 좀 더 활발한 연구가 필요하다고 사료되어진다. This study was concerned to investigate the effect of stress on the immune responses in rats with different dietary fats. 23 male Sprague-Dawley rats, weighting 65-75g, were fed two different types of dietary oils for 7 weeks. For sterss rats made to feel isolation in the outside intercept rat cages by 4/5 degree and immune capacity is measured to use body weight, food efficiency ratio, organ weight for showing those effect. 1. Body weight, weight gain and food efficiency ratio had no effect on stress, but these were significantly low for group which gives tuna oil. 2. In organ weight, weight of liver increased significantly, and adrenal gland, adrenal gland index decreased by stress. Liver index, spleen, adrenal gland index in corn oil fed group were lower than the result of tuna oil group. In the case of thymus in corn oil fed group was higher than tuna oil group. 3. According to stress, ConA-induced lymphocyte proliferation was decreased but PHA-induced lymphocyte proliferation was increased in immune capacity. In the cases of dietary fat corn oil group was higher than tuna oil PHA/ConA ratio seemed to increase by sterss. 4. Cell protein synthesis capacity have no significant difference but a major portion of mitogen induced lymphocyte proliferation decreased. The capacity of tuna oil group was higher than corn oil group in dietary fats. A sort of dietary fat and sterss had an effect to weight of immune response organ, and those had no significant effect to immune capacity. Immune capacity seemed to increase by stress, the result of corn oil group was higher than the result of tuna oil group.
Jung, Soon-Won,Choi, Jeong-Seon,Park, Jung Ho,Koo, Jae Bon,Park, Chan Woo,Na, Bock Soon,Oh, Ji-Young,Lim, Sang Chul,Lee, Sang Seok,Chu, Hye Yong American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.3
<P>We demonstrate flexible organic/inorganic hybrid thin-film transistors (TFTs) on a polydimethysiloxane (PDMS) elastomer substrate. The active channel and gate insulator of the hybrid TFT are composed of In-Ga-Zn-O (IGZO) and blends of poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] with poly(methyl methacrylate) (PMMA), respectively. It has been confirmed that the fabricated TFT display excellent characteristics: the recorded field-effect mobility, sub-threshold voltage swing, and Ion/Ioff ratio were approximately 0.35 cm(2) V-1 s(-1), 1.5 V/decade, and 10(4), respectively. These characteristics did not experience any degradation at a bending radius of 15 mm. These results correspond to the first demonstration of a hybrid-type TFT using an organic gate insulator/ oxide semiconducting active channel structure fabricated on PDMS elastomer, and demonstrate the feasibility of a promising device in a flexible electronic system.</P>
Jung, Soon-Won,Na, Bock Soon,Park, Chan Woo,Koo, Jae Bon American Scientific Publishers 2014 Journal of Nanoscience and Nanotechnology Vol.14 No.11
<P>We demonstrate an organic one-time programmable memory cell formed entirely at plastic-compatible temperatures. All the processes are performed at below 130 degrees C. Our memory cell consists of a printed organic transistor and an organic capacitor. Inkjet-printed organic transistors are fabricated by using high-k polymer dielectric blends comprising poly(vinylidenefluoride-trifluoroethylene) [P(VDF-TrFE)] and poly(methyl methacrylate) (PMMA) for low-voltage operation. P(NDI2OD-T2) transistors have a high field-effect mobility of 0.2 cm2/Vs and a low operation gate voltage of less than 10 V. The operation voltage effectively decreases owing to the high permittivity of the P(VDF-TrFE):PMMA blended film. The data in the memory cell are programmed by electrically breaking the organic capacitor. The organic capacitor acts like an antifuse capacitor, because it is initially open, and it becomes permanently short-circuited by applying a high voltage. The organic memory cells are programmed with 4 V, and they are read out with 2 V. The memory data are read out by sensing the current in the memory cell. The printed organic one-time programmable memory is suitable for applications storing small amount of data, such as low-cost radio-frequency identification (RFID) tag.</P>
Locally-tailored structure of an elastomeric substrate for stretchable circuits
Park, Chan Woo,Jung, Soon Won,Na, Bock Soon,Oh, Ji-Young,Park, Nae-Man,Seok Lee, Sang,Bon Koo, Jae Institute of Physics 2016 Semiconductor science and technology Vol.31 No.2
<P>We demonstrate a new process for fabricating a hybrid elastomeric polydimethylsiloxane (PDMS) substrate, which can provide a high ratio (as large as ∼50) of the elastic modulus between the active device region and the interconnect area, as well as a locally tailored surface profile for each region. For this process, a Si master mold with a dual surface profile is prepared, where locally flat regions are distributed within a wavy-surfaced area. The stiffer elastomeric islands for active devices are formed on the flat regions by photolithography of a photo-patternable and hard PDMS layer (<I>E</I>?∼?160 MPa), over which a soft PDMS layer (<I>E</I>?∼?2 to 3 MPa) is casted. By releasing the whole PDMS layer from the mold, a hybrid silicone substrate with stiff and flat islands embedded within a soft and wavy matrix is obtained. In this hybrid structure, active devices located on the stiff regions can provide high reliability under stretched conditions, while most strain is accommodated by wavy interconnects within the soft area. Such beneficial effects are demonstrated by organic thin film transistors produced on the hybrid substrate.</P>