Abstract: An evaluating device of a flexural property includes a holder, a body disposed on the holder and capable of being moved along with a length of direction of the holder, a clamp coupled to the body to be rotated on the body and fixing a first side of the specimen to be evaluated, and a pressing part disposed over the clamp and pressing a second side of the specimen opposite to the first side and disposed upper than the first side of the specimen to bend the specimen, and an evaluation method of a flexural property of the bent specimen using the same.

Abstract: A composition for an optical film, including a homeotropic liquid crystal, a silane or germane compound including at least one fluorine at a terminal end thereof, and a polymerizable compound.

Abstract: An evaluating device of a flexural property includes a holder, a body disposed on the holder and capable of being moved along with a length of direction of the holder, a clamp coupled to the body to be rotated on the body and fixing a first side of the specimen to be evaluated, and a pressing part disposed over the clamp and pressing a second side of the specimen opposite to the first side and disposed upper than the first side of the specimen to bend the specimen, and an evaluation method of a flexural property of the bent specimen using the same.

Abstract: A metal suboxide having a specific surface area of greater than or equal to about 1.5 m2/g is prepared by preparing a metal suboxide precursor, and heat-treating the metal suboxide precursor.

Abstract: A semi-permeable membrane may include a support layer and an active layer in contact with the support layer. The support layer includes a porous structure including a polymer and at least one metal (or metalloid) oxide in the porous structure. In the support layer, the amount of the metal (or metalloid) oxide present in a portion adjacent to the active layer is higher than the amount of the metal (or metalloid) oxide present in a portion farther from the active layer.

Abstract: A composition for an optical film, including a first liquid crystal compound represented by the following Chemical Formula 1 and a second liquid crystal compound represented by the following Chemical Formula 2, wherein a difference between a solubility parameter of the first liquid crystal compound and a solubility parameter of the second liquid crystal compound is about 2.50 to about 2.90 wherein in Chemical Formulae 1 and 2, X, R1 to R3, Z, n, m, and p are the same as described in the detailed description.

Abstract: An organic/inorganic composite membrane may include hydrophilic inorganic particles dispersed in an organic polymer matrix having finger-like pores. The hydrophilic inorganic particles may be present at a higher concentration near one surface of the membrane having a higher density than the other surface of the membrane having a lower density.

Abstract: A forward osmosis water treatment device includes a plurality of forward osmosis separation membrane in which each forward osmosis separation membrane includes an active layer and a support layer, first spacers disposed between two active layers facing each other, and second spacers disposed between two support layers facing each other, wherein a plurality of the first spacers and the second spacers are included so as to form a stack structure together with the forward osmosis membranes, the plurality of the first spacers form a first flow path forming a flow of water to be treated, and the plurality of the second spacers form a second flow path forming a flow of a draw solution.

Abstract: A composition for an optical film, including a first liquid crystal compound represented by the following Chemical Formula 1 and a second liquid crystal compound represented by the following Chemical Formula 2, wherein a difference between a solubility parameter of the first liquid crystal compound and a solubility parameter of the second liquid crystal compound is about 2.50 to about 2.90 wherein in Chemical Formulae 1 and 2, X, R1 to R3, Z, n, m, and p are the same as described in the detailed description.

Abstract: A filter unit may include an electrode structure, a fluid-purifying flow path, and a pH adjusting chamber. The electrode structure may include a cathode, a cation exchange membrane, an anion exchange membrane, and an anode in that order. The fluid-purifying flow path may be at least one of a path in the cathode, between the cathode and the cation exchange membrane, between the anion exchange membrane and the anode, and in the anode. The fluid-purifying flow path may include an adsorption function. The pH adjusting chamber may be between the cation exchange membrane and the anion exchange membrane. The pH adjusting chamber may be configured to control the pH of the fluid in the fluid-purifying flow path.

Abstract: A composition for an optical film, including a homeotropic liquid crystal, a silane or germane compound including at least one fluorine at a terminal end thereof, and a polymerizable compound.

Abstract: An ion exchanger according to a non-limiting embodiment may include an open cell polymer support and a microporous polymer matrix charged within the open cell polymer support. The microporous polymer matrix includes an ion conductive polymer. The ion conductive polymer may be obtained by polymerizing monomers having at least one ion exchange functional group and at least one cross-linkable functional group with a cross-linking agent having at least two cross-linkable functional groups.

Abstract: A semi-permeable membrane may include a support layer and an active layer in contact with the support layer. The support layer includes a porous structure including a polymer and at least one metal (or metalloid) oxide in the porous structure. In the support layer, the amount of the metal (or metalloid) oxide present in a portion adjacent to the active layer is higher than the amount of the metal (or metalloid) oxide present in a portion farther from the active layer.

Abstract: A metal suboxide having a specific surface area of greater than or equal to about 1.5 m2/g is prepared by preparing a metal suboxide precursor, and heat-treating the metal suboxide precursor.

Abstract: A metal suboxide having a specific surface area of greater than or equal to about 1.5 m2/g is prepared by preparing a metal suboxide precursor, and heat-treating the metal suboxide precursor.

Abstract: An organic/inorganic composite membrane may include hydrophilic inorganic particles dispersed in an organic polymer matrix having finger-like pores. The hydrophilic inorganic particles may be present at a higher concentration near one surface of the membrane having a higher density than the other surface of the membrane having a lower density.

Abstract: An ion exchanger according to a non-limiting embodiment may include an open cell polymer support and a microporous polymer matrix charged within the open cell polymer support. The microporous polymer matrix includes an ion conductive polymer. The ion conductive polymer may be obtained by polymerizing monomers having at least one ion exchange functional group and at least one cross-linkable functional group with a cross-linking agent having at least two cross-linkable functional groups.

Abstract: A metal suboxide having a specific surface area of greater than or equal to about 1.5 m2/g is prepared by preparing a metal suboxide precursor, and heat-treating the metal suboxide precursor.

Abstract: A heavy metal absorbent, and a filter device including the same, include heavy metal absorbing particles each having a surface with a —NOx (1?x?2) functional group. The heavy metal absorbing particles are one selected from inorganic oxide particles, graphite-based carbon particles, and a combination thereof.

Abstract: A filter unit may include an electrode structure, a fluid-purifying flow path, and a pH adjusting chamber. The electrode structure may include a cathode, a cation exchange membrane, an anion exchange membrane, and an anode in that order. The fluid-purifying flow path may be at least one of a path in the cathode, between the cathode and the cation exchange membrane, between the anion exchange membrane and the anode, and in the anode. The fluid-purifying flow path may include an adsorption function. The pH adjusting chamber may be between the cation exchange membrane and the anion exchange membrane. The pH adjusting chamber may be configured to control the pH of the fluid in the fluid-purifying flow path.