We are reporting that a large amount of static charges are formed in the process during which the... more We are reporting that a large amount of static charges are formed in the process during which the polarizing plates are attached to the LCD panel and these charges can affect the orientation of liquid crystals entailing an unintentional image on the display, which is highly undesirable in the LCD manufacturing process. To prevent this problem, polarizing films with conducting
Clear conductive polymer films were prepared by coating the solution composed of conductive polym... more Clear conductive polymer films were prepared by coating the solution composed of conductive polymer and their properties were evaluated. Conductive polymer coated polymer films are transparent and have good ESD properties enough to be used as ESD protection materials for packaging electronic parts. 0.5 mm thick A-PET film with a surface resistance of 105 ohms per square shows a transparency
2012 19th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits, 2012
Optical microscope and FIB were widely used to find out defect locations in display panels. But f... more Optical microscope and FIB were widely used to find out defect locations in display panels. But failure analysis of LTPS TFTs is getting more difficult to detect the locations than that of (a-Si:H) TFTs. We adopted FIB and EMMI tool and found the leakage path on some special function failure such as line defect in display panel. Analysis results would help to find out defects and improve the yield by introducing right analysis method of FIB/EMMI tools in display panels.
The journal of investigative dermatology. Symposium proceedings / the Society for Investigative Dermatology, Inc. [and] European Society for Dermatological Research, 2005
Chloride intracellular channel (CLIC)4 is a p53- and tumor necrosis factor alpha (TNFalpha)-regul... more Chloride intracellular channel (CLIC)4 is a p53- and tumor necrosis factor alpha (TNFalpha)-regulated chloride channel protein that is localized to the mitochondria and cytoplasm of mouse and human keratinocytes. CLIC4 protein increases in differentiating keratinocytes and in keratinocytes exposed to DNA-damaging agents and metabolic inhibitors. Increasing CLIC4 levels by transduction of recombinant CLIC4 causes apoptosis. CLIC4 translocates to the nucleus under a variety of conditions of cell stress, and nuclear CLIC4 is associated with cell cycle arrest and accelerated apoptosis. Reduction of CLIC4 and several other CLIC family members by expressing a doxycycline-regulated CLIC4 antisense also causes apoptosis in squamous cancer cell lines. Expressing antisense CLIC4 in tumors derived from transplanting these cells into nude mice inhibits tumor growth, increases tumor apoptosis, and reduces tumor cell proliferation. Co-administration of TNFalpha intraperitoneally enhances the tumo...
The passage of ions to form and maintain electrochemical gradients is a key element for regulatin... more The passage of ions to form and maintain electrochemical gradients is a key element for regulating cellular activities and is dependent on specific channel proteins or complexes. Certain ion channels have been the targets of pharmaceuticals that have had impact on a variety of cardiovascular and neurological diseases. Chloride channels regulate the movement of a major cellular anion, and in so doing they in part determine cell membrane potential, modify transepithelial transport, and maintain intracellular pH and cell volume. There are multiple families of chloride channel proteins, and respiratory, neuromuscular, and renal dysfunction may result from mutations in specific family members. Interest in chloride channels related to cancer first arose when the multidrug resistance protein (MDR/P-glycoprotein) was linked to volume-activated chloride channel activity in cancer cells from patients undergoing chemotherapy. More recently, CLC, CLIC, and CLCA intracellular chloride channels h...
We report on an aqueous synthesis of cadmium telluride (CdTe) nanocrystals by using dithiol-funct... more We report on an aqueous synthesis of cadmium telluride (CdTe) nanocrystals by using dithiol-functionalized ionic liquids (dTFILs). The dTFILs were designed to have dithiol and vinylimidazolium functional groups and used as a ligand molecule of CdTe quantum dot (QD) to utilize the bidendate chelate interaction afforded by the dithiol groups of dTFILs. The photoluminescence quantum yield of dTFIL-capped CdTe QDs reached up to ∼40%, and their luminescent property was maintained for 8 weeks, suggesting an improved stability in water phase. This approach will provide a new synthetic route to the water soluble QDs.
High-quality silver (Ag) nanowires with specific dimensions were synthesized by a polyol method w... more High-quality silver (Ag) nanowires with specific dimensions were synthesized by a polyol method with detailed control of the synthesis conditions. For the same amount of AgNO 3 , the Ag nanowire density became higher as the nanowire diameter decreases and the length increases. This trend was replicated in Ag nanowire films coated on poly(ethylene terephthalate) films and higher densities of Ag nanowires and their junctions were observed in thinner and shorter nanowire networks. Nanowire films with a low sheet resistance (<100 X sq À1 ) and a high transmittance (>90%) resulted from thin, long Ag nanowires. A modified percolation model, which emphasized the importance of the nanowire junction density, was in good agreement with the experimental observations. Meanwhile, long Ag nanowires were found to be undesirable in respect of their uniform coating over a large area. These results offer important design rules of Ag nanowires for highly conductive and transparent nanowire films.
9th International Conference on Rehabilitation Robotics, 2005. ICORR 2005., 2005
The user has requested enhancement of the downloaded file. All in-text references underlined in b... more The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.
The study was designed to examine the effect of glucose on the expression of c-myc gene in cultur... more The study was designed to examine the effect of glucose on the expression of c-myc gene in cultured RINm5F cells. After monolayer culture was established in RPMI 1640 media supplemented with 10% fetal calf serum (FCS), the cells were cultured in various concentrations of glucose and 1 or 10% FCS for another 24 hours. A mRNA was extracted from the cultured cells by a single step method, and Northern analysis was done to detect RNA band. A 0.5 kilobase single band was detected as c-myc mRNA. The expression of c-myc gene mRNA was reduced with increased concentration of glucose with 1% FCS. However, supplementation of 10% FCS abolished the effect of glucose on expression of c-myc gene. These findings suggested that glucose in conjunction with other growth promoting factors played an important role in expression of oncogene and cell growth in RINm5F cells.
Poly (3,4-ethylenedioxythiophene) (PEDOT)/poly(1-vinyl-3-ethylimidazolium + (trifluoromethane sul... more Poly (3,4-ethylenedioxythiophene) (PEDOT)/poly(1-vinyl-3-ethylimidazolium + (trifluoromethane sulfonyl)imide − ) (PIL) complexes were prepared at various PEDOT/PIL molar ratios and dispersed in propylene carbonate at a concentration of 1 wt%. After casting, the maximum conductivity was measured to be 1.2 × 10 −1 S/cm, which could be explained by the 3D variable range hopping model. The optimum surface roughness of the PEDOT/PIL film was measured, showing S a and S q values of 5.92 and 11.0 nm, respectively. The conductivity of the polymerized PEDOT without a template process had low conductivity due to its poor surface roughness and large particle size. Therefore, the conductivity of PEDOT/PILs is determined by the particle size, crystallinity and surface morphology. These results were supported by surface mapping microscopy, X-ray photon spectroscopy, and X-ray diffraction.
Abstract The effects of He content in He-Ne-Xe (11%) on the reset and address discharges were exa... more Abstract The effects of He content in He-Ne-Xe (11%) on the reset and address discharges were examined under variable panel temperature ranging from-5 to+ 65 C. The changes in the firing voltages under the XY surface or the AY plate-gap discharges were measured ...
mtCLIC/CLIC4 is a p53 and tumor necrosis factor alpha (TNFalpha) regulated intracellular chloride... more mtCLIC/CLIC4 is a p53 and tumor necrosis factor alpha (TNFalpha) regulated intracellular chloride channel protein that localizes to cytoplasm and organelles and induces apoptosis when overexpressed in several cell types of mouse and human origin. CLIC4 is elevated during TNFalpha-induced apoptosis in human osteosarcoma cell lines. In contrast, inhibition of NFkappaB results in an increase in TNFalpha-mediated apoptosis with a decrease in CLIC4 protein levels. Cell lines expressing an inducible CLIC4-antisense construct that also reduces the expression of several other chloride intracellular channel (CLIC) family proteins were established in the human osteosarcoma lines SaOS and U2OS cells and a malignant derivative of the mouse squamous papilloma line SP1. Reduction of CLIC family proteins by antisense expression caused apoptosis in these cells. Moreover, CLIC4-antisense induction increased TNFalpha-mediated apoptosis in both the SaOS and U2OS derivative cell lines without altering ...
[1992] Proceedings of the 4th International Conference on Conduction and Breakdown in Solid Dielectrics, 1992
The characteristics of charge accumulation in XLPE (cross-linked polyethylene) with heat-treated ... more The characteristics of charge accumulation in XLPE (cross-linked polyethylene) with heat-treated semiconductive electrodes are investigated. Both fresh ones and vacuum degassed electrodes are used. Vacuum treatment reduces the amount of residual by-products of the crosslinking reaction, which helps the buildup of homocharges near the electrodes. This indicates that the heterocharge peak observed in XLPE is caused by such by-products. In
During the progression of Type 2 diabetes, glucose toxicity is likely to contribute importantly t... more During the progression of Type 2 diabetes, glucose toxicity is likely to contribute importantly to progressive beta cell failure. Oxidative stress is an important aspect of glucose toxicity in pancreatic beta cells, and reducing sugars, such as 2-deoxy-D-ribose (dRib), produce reactive oxygen species. Furthermore, many of the biological properties of flavonoids are likely to be related to their antioxidant and free-radical scavenging abilities. Accordingly, in the present study, we investigated whether kaempferol (a flavonol) protects beta cells from dRib-induced oxidative damage. HIT-T15 cells were cultured with various concentrations of dRib for 24h. Cell survivals, amounts of reactive oxygen species (ROS) generated, apoptosis, and lipid peroxidation were measured. dRib was found to dose-dependently reduce cell survival and to markedly increase intracellular ROS levels, apoptosis, and lipid peroxidation. However, kaempferol (10 microM) suppressed dRib (20 mM) induced intracellular...
Proceedings of 5th International Conference on Properties and Applications of Dielectric Materials, 1997
Effects of ionic impurities on the dielectric breakdown of the crosslinked polyethylene (XLPE) we... more Effects of ionic impurities on the dielectric breakdown of the crosslinked polyethylene (XLPE) were studied using aqueous electrolytes. It was found that the AC breakdown strength of XLPE decreases considerably when the ions are present in the electrodes composed of aqueous electrolyte. Details of results were described
Abnormal bright or dark spot images are classified into one of the LCD failures. We report here t... more Abnormal bright or dark spot images are classified into one of the LCD failures. We report here that this comes from the liquid crystal orientation, which is affected by the static charge-induced electric field. Based on the proposed mechanism, its prevention method will be discussed in terms of materials and ionizers.
We report a procedure to prepare a conducting nano-composites composed of multi-walled carbon nan... more We report a procedure to prepare a conducting nano-composites composed of multi-walled carbon nanotubes (MWNTs) and PEDOT by using a poly(sodium 4-styrenesulfonate) (PSSNa) as a inter-linking molecule between MWNT and PEDOT. When PSSNa chains are introduced on the MWNTs via physicochemical interaction, the surface of MWNT becomes negatively charged, and PSS-modified MWNTs promote the effective association of the positively charged
We are reporting that a large amount of static charges are formed in the process during which the... more We are reporting that a large amount of static charges are formed in the process during which the polarizing plates are attached to the LCD panel and these charges can affect the orientation of liquid crystals entailing an unintentional image on the display, which is highly undesirable in the LCD manufacturing process. To prevent this problem, polarizing films with conducting
Clear conductive polymer films were prepared by coating the solution composed of conductive polym... more Clear conductive polymer films were prepared by coating the solution composed of conductive polymer and their properties were evaluated. Conductive polymer coated polymer films are transparent and have good ESD properties enough to be used as ESD protection materials for packaging electronic parts. 0.5 mm thick A-PET film with a surface resistance of 105 ohms per square shows a transparency
2012 19th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits, 2012
Optical microscope and FIB were widely used to find out defect locations in display panels. But f... more Optical microscope and FIB were widely used to find out defect locations in display panels. But failure analysis of LTPS TFTs is getting more difficult to detect the locations than that of (a-Si:H) TFTs. We adopted FIB and EMMI tool and found the leakage path on some special function failure such as line defect in display panel. Analysis results would help to find out defects and improve the yield by introducing right analysis method of FIB/EMMI tools in display panels.
The journal of investigative dermatology. Symposium proceedings / the Society for Investigative Dermatology, Inc. [and] European Society for Dermatological Research, 2005
Chloride intracellular channel (CLIC)4 is a p53- and tumor necrosis factor alpha (TNFalpha)-regul... more Chloride intracellular channel (CLIC)4 is a p53- and tumor necrosis factor alpha (TNFalpha)-regulated chloride channel protein that is localized to the mitochondria and cytoplasm of mouse and human keratinocytes. CLIC4 protein increases in differentiating keratinocytes and in keratinocytes exposed to DNA-damaging agents and metabolic inhibitors. Increasing CLIC4 levels by transduction of recombinant CLIC4 causes apoptosis. CLIC4 translocates to the nucleus under a variety of conditions of cell stress, and nuclear CLIC4 is associated with cell cycle arrest and accelerated apoptosis. Reduction of CLIC4 and several other CLIC family members by expressing a doxycycline-regulated CLIC4 antisense also causes apoptosis in squamous cancer cell lines. Expressing antisense CLIC4 in tumors derived from transplanting these cells into nude mice inhibits tumor growth, increases tumor apoptosis, and reduces tumor cell proliferation. Co-administration of TNFalpha intraperitoneally enhances the tumo...
The passage of ions to form and maintain electrochemical gradients is a key element for regulatin... more The passage of ions to form and maintain electrochemical gradients is a key element for regulating cellular activities and is dependent on specific channel proteins or complexes. Certain ion channels have been the targets of pharmaceuticals that have had impact on a variety of cardiovascular and neurological diseases. Chloride channels regulate the movement of a major cellular anion, and in so doing they in part determine cell membrane potential, modify transepithelial transport, and maintain intracellular pH and cell volume. There are multiple families of chloride channel proteins, and respiratory, neuromuscular, and renal dysfunction may result from mutations in specific family members. Interest in chloride channels related to cancer first arose when the multidrug resistance protein (MDR/P-glycoprotein) was linked to volume-activated chloride channel activity in cancer cells from patients undergoing chemotherapy. More recently, CLC, CLIC, and CLCA intracellular chloride channels h...
We report on an aqueous synthesis of cadmium telluride (CdTe) nanocrystals by using dithiol-funct... more We report on an aqueous synthesis of cadmium telluride (CdTe) nanocrystals by using dithiol-functionalized ionic liquids (dTFILs). The dTFILs were designed to have dithiol and vinylimidazolium functional groups and used as a ligand molecule of CdTe quantum dot (QD) to utilize the bidendate chelate interaction afforded by the dithiol groups of dTFILs. The photoluminescence quantum yield of dTFIL-capped CdTe QDs reached up to ∼40%, and their luminescent property was maintained for 8 weeks, suggesting an improved stability in water phase. This approach will provide a new synthetic route to the water soluble QDs.
High-quality silver (Ag) nanowires with specific dimensions were synthesized by a polyol method w... more High-quality silver (Ag) nanowires with specific dimensions were synthesized by a polyol method with detailed control of the synthesis conditions. For the same amount of AgNO 3 , the Ag nanowire density became higher as the nanowire diameter decreases and the length increases. This trend was replicated in Ag nanowire films coated on poly(ethylene terephthalate) films and higher densities of Ag nanowires and their junctions were observed in thinner and shorter nanowire networks. Nanowire films with a low sheet resistance (<100 X sq À1 ) and a high transmittance (>90%) resulted from thin, long Ag nanowires. A modified percolation model, which emphasized the importance of the nanowire junction density, was in good agreement with the experimental observations. Meanwhile, long Ag nanowires were found to be undesirable in respect of their uniform coating over a large area. These results offer important design rules of Ag nanowires for highly conductive and transparent nanowire films.
9th International Conference on Rehabilitation Robotics, 2005. ICORR 2005., 2005
The user has requested enhancement of the downloaded file. All in-text references underlined in b... more The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.
The study was designed to examine the effect of glucose on the expression of c-myc gene in cultur... more The study was designed to examine the effect of glucose on the expression of c-myc gene in cultured RINm5F cells. After monolayer culture was established in RPMI 1640 media supplemented with 10% fetal calf serum (FCS), the cells were cultured in various concentrations of glucose and 1 or 10% FCS for another 24 hours. A mRNA was extracted from the cultured cells by a single step method, and Northern analysis was done to detect RNA band. A 0.5 kilobase single band was detected as c-myc mRNA. The expression of c-myc gene mRNA was reduced with increased concentration of glucose with 1% FCS. However, supplementation of 10% FCS abolished the effect of glucose on expression of c-myc gene. These findings suggested that glucose in conjunction with other growth promoting factors played an important role in expression of oncogene and cell growth in RINm5F cells.
Poly (3,4-ethylenedioxythiophene) (PEDOT)/poly(1-vinyl-3-ethylimidazolium + (trifluoromethane sul... more Poly (3,4-ethylenedioxythiophene) (PEDOT)/poly(1-vinyl-3-ethylimidazolium + (trifluoromethane sulfonyl)imide − ) (PIL) complexes were prepared at various PEDOT/PIL molar ratios and dispersed in propylene carbonate at a concentration of 1 wt%. After casting, the maximum conductivity was measured to be 1.2 × 10 −1 S/cm, which could be explained by the 3D variable range hopping model. The optimum surface roughness of the PEDOT/PIL film was measured, showing S a and S q values of 5.92 and 11.0 nm, respectively. The conductivity of the polymerized PEDOT without a template process had low conductivity due to its poor surface roughness and large particle size. Therefore, the conductivity of PEDOT/PILs is determined by the particle size, crystallinity and surface morphology. These results were supported by surface mapping microscopy, X-ray photon spectroscopy, and X-ray diffraction.
Abstract The effects of He content in He-Ne-Xe (11%) on the reset and address discharges were exa... more Abstract The effects of He content in He-Ne-Xe (11%) on the reset and address discharges were examined under variable panel temperature ranging from-5 to+ 65 C. The changes in the firing voltages under the XY surface or the AY plate-gap discharges were measured ...
mtCLIC/CLIC4 is a p53 and tumor necrosis factor alpha (TNFalpha) regulated intracellular chloride... more mtCLIC/CLIC4 is a p53 and tumor necrosis factor alpha (TNFalpha) regulated intracellular chloride channel protein that localizes to cytoplasm and organelles and induces apoptosis when overexpressed in several cell types of mouse and human origin. CLIC4 is elevated during TNFalpha-induced apoptosis in human osteosarcoma cell lines. In contrast, inhibition of NFkappaB results in an increase in TNFalpha-mediated apoptosis with a decrease in CLIC4 protein levels. Cell lines expressing an inducible CLIC4-antisense construct that also reduces the expression of several other chloride intracellular channel (CLIC) family proteins were established in the human osteosarcoma lines SaOS and U2OS cells and a malignant derivative of the mouse squamous papilloma line SP1. Reduction of CLIC family proteins by antisense expression caused apoptosis in these cells. Moreover, CLIC4-antisense induction increased TNFalpha-mediated apoptosis in both the SaOS and U2OS derivative cell lines without altering ...
[1992] Proceedings of the 4th International Conference on Conduction and Breakdown in Solid Dielectrics, 1992
The characteristics of charge accumulation in XLPE (cross-linked polyethylene) with heat-treated ... more The characteristics of charge accumulation in XLPE (cross-linked polyethylene) with heat-treated semiconductive electrodes are investigated. Both fresh ones and vacuum degassed electrodes are used. Vacuum treatment reduces the amount of residual by-products of the crosslinking reaction, which helps the buildup of homocharges near the electrodes. This indicates that the heterocharge peak observed in XLPE is caused by such by-products. In
During the progression of Type 2 diabetes, glucose toxicity is likely to contribute importantly t... more During the progression of Type 2 diabetes, glucose toxicity is likely to contribute importantly to progressive beta cell failure. Oxidative stress is an important aspect of glucose toxicity in pancreatic beta cells, and reducing sugars, such as 2-deoxy-D-ribose (dRib), produce reactive oxygen species. Furthermore, many of the biological properties of flavonoids are likely to be related to their antioxidant and free-radical scavenging abilities. Accordingly, in the present study, we investigated whether kaempferol (a flavonol) protects beta cells from dRib-induced oxidative damage. HIT-T15 cells were cultured with various concentrations of dRib for 24h. Cell survivals, amounts of reactive oxygen species (ROS) generated, apoptosis, and lipid peroxidation were measured. dRib was found to dose-dependently reduce cell survival and to markedly increase intracellular ROS levels, apoptosis, and lipid peroxidation. However, kaempferol (10 microM) suppressed dRib (20 mM) induced intracellular...
Proceedings of 5th International Conference on Properties and Applications of Dielectric Materials, 1997
Effects of ionic impurities on the dielectric breakdown of the crosslinked polyethylene (XLPE) we... more Effects of ionic impurities on the dielectric breakdown of the crosslinked polyethylene (XLPE) were studied using aqueous electrolytes. It was found that the AC breakdown strength of XLPE decreases considerably when the ions are present in the electrodes composed of aqueous electrolyte. Details of results were described
Abnormal bright or dark spot images are classified into one of the LCD failures. We report here t... more Abnormal bright or dark spot images are classified into one of the LCD failures. We report here that this comes from the liquid crystal orientation, which is affected by the static charge-induced electric field. Based on the proposed mechanism, its prevention method will be discussed in terms of materials and ionizers.
We report a procedure to prepare a conducting nano-composites composed of multi-walled carbon nan... more We report a procedure to prepare a conducting nano-composites composed of multi-walled carbon nanotubes (MWNTs) and PEDOT by using a poly(sodium 4-styrenesulfonate) (PSSNa) as a inter-linking molecule between MWNT and PEDOT. When PSSNa chains are introduced on the MWNTs via physicochemical interaction, the surface of MWNT becomes negatively charged, and PSS-modified MWNTs promote the effective association of the positively charged
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