http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Novel patterning of flexible and transparent Ag nanowire electrodes using oxygen plasma treatment
Kim, Hoijoon,Lee, Giseok,Becker, Stefan,Kim, Ji-Seon,Kim, Hyoungsub,Hwang, Byungil The Royal Society of Chemistry 2018 Journal of Materials Chemistry C Vol.6 No.35
<P>We report a novel patterning method using oxygen plasma treatment for flexible and transparent Ag nanowire electrodes. Using a dry film photoresist as a solid-state film-type photoresist, Ag nanowires were selectively oxidized under oxygen plasma treatment. Microstructural analysis revealed that the Ag nanowires were fully oxidized after 30 s of oxygen plasma treatment, which was also reflected in the changes in the optoelectronic properties of the Ag nanowires. The fully oxidized Ag nanowires could be completely dissolved in NH3 solution (aq.), without using a toxic etchant to form sharp patterns of Ag nanowire electrodes. To further confirm the applicability of the patterning technique demonstrated here in electronic devices, MoS2 thin-film transistors (TFTs) with patterned Ag-nanowire source/drain (S/D) electrodes were fabricated and they showed similar performances to typical MoS2 TFTs with thin-film-type Ti/Au S/D electrodes.</P>
Nanostructured gold films for SERS by block copolymer-templated galvanic displacement reactions.
Wang, Yong,Becker, Michael,Wang, Li,Liu, Jinquan,Scholz, Roland,Peng, Juan,Gö,sele, Ulrich,Christiansen, Silke,Kim, Dong Ha,Steinhart, Martin American Chemical Society 2009 Nano letters Vol.9 No.6
<P>Up to now, little effort has been made to exploit large-area high-throughput patterning by block copolymer (BCP) lithography to generate nanostructured substrates with periods well below 100 nm for surface-enhanced Raman scattering (SERS). We show that simple BCP-templated galvanic displacement reactions yield dense arrays of mushroom-shaped gold nanopillars with a period of 50 nm. The nanoporous BCP films used as templates were obtained by swelling-induced reconstruction of reverse micelle monolayers deposited on silicon wafers. Coupling of adjacent mushroom caps almost impinging on each other combined with their strong local curvature results in a high spatial density of hot spots in the narrow gaps between them. Thus, substrates characterized by high SERS efficiencies are obtained.</P>
Assessment of Photovoltaic Potentials in Brazil Using Solar Resource Map
Adilson Moacir Becker Jr.,Yun, Chang-Yeol(윤창열),Jo, Dok-Ki(조덕기),Kim, Hyun-goo(김현구),Kang, Young-Heack(강용혁) 한국태양에너지학회 2013 한국태양에너지학회 학술대회논문집 Vol.2013 No.11
In order to analyze the photovoltaic potential in Brazil, the present study aims to simulate and compare the solar radiation and PV yield through the Brazilian and Korean Solar Map. five strategy points in Brazilian Territory and one point in Korea were selected, considering local characteristics and meteorological data. After that, a photovoltaic simulation had been proceeded by PV syst Software based on a PV Grid connected system with 1 MW rated power using the solar panel BP solar BP4175 (module type Mono-si PV and module efficiency of 13.9%). As the results, it can be noticed that the annual mean of daily horizontal global solar irradiation is between 4.20~6.70 kWh/㎡/d. The simulation shows that all studied sites present an interesting electricity yield. Brasilia and Teresina, located in Central West and Northeast, represent the highest energy production simulation(1,626and1,544 MWh/year, respectively). In doing so, Brazilian radiation reality can be easily compared to the most favorable countries around the world such as United States and India
Garbes, L.,Kim, K.,Riesz, A.,Hoyer-Kuhn, H.,Beleggia, F.,Bevot, A.,Kim, M.,Huh, Y.,Kweon, H.S.,Savarirayan, R.,Amor, D.,Kakadia, Purvi M.,Lindig, T.,Kagan, K.,Becker, J.,Boyadjiev, Simeon A.,Wollnik, University of Chicago Press [etc.] 2015 American journal of human genetics Vol.96 No.3
As a result of a whole-exome sequencing study, we report three mutant alleles in SEC24D, a gene encoding a component of the COPII complex involved in protein export from the ER: the truncating mutation c.613C>T (p.Gln205<SUP>*</SUP>) and the missense mutations c.3044C>T (p.Ser1015Phe, located in a cargo-binding pocket) and c.2933A>C (p.Gln978Pro, located in the gelsolin-like domain). Three individuals from two families affected by a similar skeletal phenotype were each compound heterozygous for two of these mutant alleles, with c.3044C>T being embedded in a 14 Mb founder haplotype shared by all three. The affected individuals were a 7-year-old boy with a phenotype most closely resembling Cole-Carpenter syndrome and two fetuses initially suspected to have a severe type of osteogenesis imperfecta. All three displayed a severely disturbed ossification of the skull and multiple fractures with prenatal onset. The 7-year-old boy had short stature and craniofacial malformations including macrocephaly, midface hypoplasia, micrognathia, frontal bossing, and down-slanting palpebral fissures. Electron and immunofluorescence microscopy of skin fibroblasts of this individual revealed that ER export of procollagen was inefficient and that ER tubules were dilated, faithfully reproducing the cellular phenotype of individuals with cranio-lentico-sutural dysplasia (CLSD). CLSD is caused by SEC23A mutations and displays a largely overlapping craniofacial phenotype, but it is not characterized by generalized bone fragility and presented with cataracts in the original family described. The cellular and morphological phenotypes we report are in concordance with the phenotypes described for the Sec24d-deficient fish mutants vbi (medaka) and bulldog (zebrafish).
Abdominal applications of 3.0-T MR imaging: comparative review versus a 1.5-T system.
Choi, Jin-Young,Kim, Myeong-Jin,Chung, Yong Eun,Kim, Ji Youn,Jones, Alun C,de Becker, Jan,van Cauteren, Marc The Society 2008 Radiographics Vol.28 No.4
<P>With the development of dedicated receiver coils and increased gradient performance, 3.0-T magnetic resonance (MR) systems are gaining wider acceptance in clinical practice. The expected twofold increase in signal-to-noise ratio (SNR) compared with that of 1.5-T MR systems may help improve spatial resolution or increase temporal resolution when used with parallel acquisition techniques. Several issues must be considered when applying 3.0-T MR in the abdomen, including the alteration of the radiofrequency field and relaxation time, increase in energy deposition and susceptibility effects, and problems associated with motion artifacts. For the evaluation of liver lesions, higher SNR and greater resolution achieved with the 3.0-T system could translate into better detection of malignant lesions on T2-weighted images obtained with adjusted imaging parameters. For the evaluation of pancreatic and biliary diseases, high-resolution T2-weighted imaging using single-shot turbo spin-echo sequences is useful; improvement in SNR was noticeable on two-dimensional MR cholangiopancreatographic images. For the preoperative imaging of rectal cancer, a single-shot sequence is useful for dramatically decreasing imaging time while maintaining image quality. Substantial modification of examination protocols, with optimized imaging parameters and sequence designs along with ongoing development of hardware, could contribute to an increased role of the 3.0-T system for abdominal MR examinations.</P>
Tweedie, D.,Rachmany, L.,Kim, D.S.,Rubovitch, V.,Lehrmann, E.,Zhang, Y.,Becker, K.G.,Perez, E.,Pick, C.G.,Greig, N.H. Elsevier/North-Holland 2016 Journal of neuroscience methods Vol.272 No.-
Background: Neurological dysfunction after traumatic brain injury (TBI) poses short-term or long-lasting health issues for family members and health care providers. Presently there are no approved medicines to treat TBI. Epidemiological evidence suggests that TBI may cause neurodegenerative disease later in life. In an effort to illuminate target cellular processes for drug development, we examined the effects of a mild TBI on hippocampal gene expression in mouse. Methods: mTBI was induced in a closed head, weight drop-system in mice (ICR). Animals were anesthetized and subjected to mTBI (30g). Fourteen days after injury the ipsilateral hippocampus was utilized for cDNA gene array studies. mTBI animals were compared with sham-operated animals. Genes regulated by TBI were identified to define TBI-induced physiological/pathological processes. mTBI regulated genes were divided into functional groupings to provide gene ontologies. Genes were further divided to identify molecular/cellular pathways regulated by mTBI. Results: Numerous genes were regulated after a single mTBI event that mapped to many ontologies and molecular pathways related to inflammation and neurological physiology/pathology, including neurodegenerative disease. Conclusions: These data illustrate diverse transcriptional changes in hippocampal tissues triggered by a single mild injury. The systematic analysis of individual genes that lead to the identification of functional categories, such as gene ontologies and then molecular pathways, illustrate target processes of relevance to TBI pathology. These processes may be further dissected to identify key factors that can be evaluated at the protein level to highlight possible treatments for TBI in human disease and potential biomarkers of neurodegenerative processes.