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Seonwoo Kim Kuniko Suzuki Ai Sugie Hiroyuki Yoshida Masafumi Yoshida 《Science and Technology of Advanced Materials》2018,19(1):486-494
Charge trap in amorphous perfluoro-polymer electret is studied, focusing on electron trap site and trap energy. Low-energy inverse photoelectron spectroscopy is adopted to measure solid-state electron affinity (EA) of cyclic transparent optical polymer (CYTOP). EA of CYTOP CTL-S is discovered by compensating the unwanted charge-up effect. Negatively-charged electret materials (polyethylene, ethylene-tetra-fluoro-ethylene, poly-tetra-fluoro-ethylene, and CYTOP) are analyzed by quantum mechanical calculation. Density functional theory with long-range correction is adopted to analyze orbital energies of single molecular systems. Intramolecular distribution of trapped electron and EA are investigated. Calculated electron affinities of CYTOP polymers with different end group are qualitatively in accordance with trapped charge stability measured with thermal stimulated discharge, signifying that electron affinities obtained with the present simulation can be used as an index of amorphous polymer electret. 相似文献
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Park Soo-Yun Lee So Young Yang Jung Wook Lee Joon-Seol Oh Sung-Dug Oh Seonwoo Lee Si Myung Lim Myung-Ho Park Soon Ki Jang Jae-Seon Cho Hyun Suk Yeo Yunsoo 《Food science and biotechnology》2016,25(1):283-291
Food Science and Biotechnology - We determined the phytochemical diversity, including carotenoids, flavonoids, anthocyanins, and phenolic acids, in sweet potatoes (Ipomoea batatas L.) with... 相似文献
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Stretchable Displays: Stretchable Active Matrix Inorganic Light‐Emitting Diode Display Enabled by Overlay‐Aligned Roll‐Transfer Printing (Adv. Funct. Mater. 11/2017) 下载免费PDF全文
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Lee Wonhui Yeo Yunsoo Oh Seonwoo Cho Kwang-Soo Park Young-Eun Park Soon Ki Lee Si Myung Cho Hyun Suk Park Soo-Yun 《Food science and biotechnology》2017,26(5):1379-1389
Food Science and Biotechnology - Lipophilic bioactive compounds and hydrophilic primary metabolites from potato (solanum tubersum L.) tubers with different-colored flesh (white-, yellow-, red-, and... 相似文献
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Stretchable Active Matrix Inorganic Light‐Emitting Diode Display Enabled by Overlay‐Aligned Roll‐Transfer Printing 下载免费PDF全文
Minwoo Choi Bongkyun Jang Wonho Lee Seonwoo Lee Tae Woong Kim Hak‐Joo Lee Jae‐Hyun Kim Jong‐Hyun Ahn 《Advanced functional materials》2017,27(11)
An active matrix‐type stretchable display is realized by overlay‐aligned transfer of inorganic light‐emitting diode (LED) and single‐crystal Si thin film transistor (TFT) with roll processes. The roll‐based transfer enables integration of heterogeneous thin film devices on a rubber substrate while preserving excellent electrical and optical properties of these devices, comparable to their bulk properties. The electron mobility of the integrated Si‐TFT is over 700 cm2 V?1 s?1, and this is attributed to the good interface between the Si channel and the thermally grown SiO2 insulator. The light emission properties of the LED are of wafer quality. The resulting display stably operates under tensile strains up to 40%, over 200 cycles, demonstrating the potential of stretchable displays based on inorganic materials. 相似文献
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Comparative analysis of genetically modified brown rice with conventional rice varieties for the safety assessment 下载免费PDF全文
Seonwoo Oh Soo‐Yun Park Yunsoo Yeo Soon Ki Park Hee‐Yun Kim 《International Journal of Food Science & Technology》2015,50(5):1244-1254
Compositional analysis of genetically modified (GM) rice (OsCK1), non‐GM comparator and reference rice as commercial rice was conducted for the safety assessment. The tolerance intervals (TI) of commercial rice were also set to illustrate compositional variability. GM rice, non‐GM rice and reference rice were compared using principal component analysis (PCA) and partial least squares‐discriminant analysis (PLS‐DA) to assess the impact of genetic modification vs. environmental influence on the rice component. Seventeen components in forty‐six analysed components were significantly different between GM rice and non‐GM rice. But, the mean ranges of the seventeen components were all within those of the reference TIs. These results demonstrate that the nutrition components of GM rice (OsCK1) fell within the range of natural variability and were biologically equivalent to non‐GM rice. In addition, multivariate analysis by PCA and PLS‐DA revealed that environmental factors such as growing locations were important due to the variability of the rice metabolite profiles. These comparisons lead to the conclusion that disease‐resistant transgenic rice (OsCK1) is compositionally equivalent to and as safe and nutritious as conventional rice varieties grown commercially. 相似文献
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