Abstract: Proposed is a three-dimensional chiral metal nanoparticle, comprising a heterometal nanoparticle including: a seed region formed of a first metal; and a heterogeneous region disposed on an external side of the seed region to enclose the seed region and formed of a second metal. The first metal is gold (Au), and the second metal is palladium (Pd). In a rectangular parallelepiped structure, a rectangular band shape rotates in a clockwise direction or a counterclockwise direction on each surface and protrudes towards a center of the surface.

Abstract: A three-dimensional chiral nanostructure according to an embodiment of the present invention comprises: metal nanoparticles having a chiral structure: and a coating layer enclosing the metal nanoparticles. The metal nanoparticle is formed in a polyhedral structure having an R region and an S region in which atoms are arranged clockwise and counterclockwise, respectively, in the order of (111), (100), and (110) crystal faces on the basis of the chiral center, wherein at least a portion of the edges form a curve tilting and extending from the R or S region so that the metal nanoparticle has a chiral structure.

Abstract: A resistive switching memory device according to an exemplary embodiment includes: a first electrode; a second electrode formed to be separated from the first electrode; and an insulating layer formed near the first electrode and the second electrode, and changed to one of a high resistance state and a low resistance state when a conductive filament is controlled by a change of external humidity or a voltage applied through the first electrode or the second electrode.

Abstract: The present invention relates to a catalyst and a manufacturing method thereof, the catalyst is characterized that a distance between a transition metal of a transition metal oxide nanoparticle and oxygen is controlled by substituting at least a part of surface of the transition metal oxide nanoparticle with an inclusion.

Abstract: The present disclosure relates to an encoding method and a decoding method using a chiral metal nanostructure. The encoding method according to an aspect of the present disclosure includes preparing a plurality of metal nanostructures having a chiral structure; obtaining the optical data of the plurality of metal nanostructures, and preparing a security medium including the plurality of metal.

Abstract: A resistive switching memory device according to an exemplary embodiment includes: a first electrode; a second electrode formed to be separated from the first electrode; and an insulating layer formed near the first electrode and the second electrode, and changed to one of a high resistance state and a low resistance state when a conductive filament is controlled by a change of external humidity or a voltage applied through the first electrode or the second electrode.

Abstract: A three-dimensional chiral nanostructure according to an embodiment of the present invention comprises: metal nanoparticles having a chiral structure: and a coating layer enclosing the metal nanoparticles. The metal nanoparticle is formed in a polyhedral structure having an R region and an S region in which atoms are arranged clockwise and counterclockwise, respectively, in the order of (111), (100), and (110) crystal faces on the basis of the chiral center, wherein at least a portion of the edges form a curve tilting and extending from the R or S region so that the metal nanoparticle has a chiral structure.

Abstract: The present disclosure relates to an encoding method and a decoding method using a chiral metal nanostructure. The encoding method according to an aspect of the present disclosure includes preparing a plurality of metal nanostructures having a chiral structure; obtaining the optical data of the plurality of metal nanostructures, and preparing a security medium including the plurality of metal.

Abstract: A peptide-inorganic material composite film according to an exemplary embodiment of the present invention includes: a unit peptide including 4 to 15 amino acids, and a transition metal oxide hybridized with the unit peptide, wherein the unit peptide includes at least two tyrosines, and the plurality of unit peptides positioned adjacent to each other have a form in which the tyrosines are linked.

Abstract: A peptide-inorganic material composite film according to an exemplary embodiment of the present invention includes: a unit peptide including 4 to 15 amino acids, and a transition metal oxide hybridized with the unit peptide, wherein the unit peptide includes at least two tyrosines, and the plurality of unit peptides positioned adjacent to each other have a form in which the tyrosines are linked.

Abstract: Provided is a nanoprobe based on a self-replicating biological material. The nanoprobe includes a binding agent existing in a first region of the biological material and capable of binding specifically to a target analyte, and nanoparticles existing in a second region of the biological material and providing an optical detection signal. The use of the nanoprobe enables quantitative analysis and multiplexed analysis of a target. In addition, the nanoprobe is easy to fabricate on a large scale.

Abstract: A variety of compositions that include a metal oxide, films and batteries comprising one or more of the compositions, and methods of making the same.

Abstract: The present invention relates to a catalyst and a manufacturing method thereof, the catalyst is characterized that a distance between a transition metal of a transition metal oxide nanoparticle and oxygen is controlled by substituting at least a part of surface of the transition metal oxide nanoparticle with an inclusion.

Abstract: A variety of compositions that include a metal oxide, films and batteries comprising one or more of the compositions, and methods of making the same.

Abstract: The invention is directed toward systems and methods for the formation of two dimensional monolayer structures of ordered biomacromolecules, such as viruses, atop cohesive polyelectrolyte multilayers to create functional thin films. Methods for the formation of such thin films are disclosed that involve an interdiffusion-induced assembly process of the biomacromolecules. The inventive systems provide a general platform for the systematic incorporation and assembly of organic, biological and inorganic materials and will enable many potential technological applications such as, for example, chemical and biological sensors, power devices and catalytic membranes.

Abstract: The present invention provides for novel peptoid oligomers that are capable of self-assembling into two-dimensional sheet structures. The peptoid oligomers can have alternately hydrophilic or polar side-chains and hydrophobic or apolar side-chains. The peptoid oligomers, and the two-dimensional sheet structures, can be applied to biological applications where the peptoid plays a role as a biological scaffold or building block. Also, the two-dimensional sheet structures of the present invention can be used as two-dimensional nanostructures in device applications.

Abstract: Provided is a nanoprobe based on a self-replicating biological material. The nanoprobe includes a binding agent existing in a first region of the biological material and capable of binding specifically to a target analyte, and nanoparticles existing in a second region of the biological material and providing an optical detection signal. The use of the nanoprobe enables quantitative analysis and multiplexed analysis of a target. In addition, the nanoprobe is easy to fabricate on a large scale.

Abstract: This invention relates to whitlockite and a method for manufacturing the same. The method includes adding, to water, a calcium ion supplying material and a cation supplying material containing a cation (X) other than the calcium ion to prepare a cation aqueous solution, adding a phosphoric acid supplying material to the cation aqueous solution, and aging the cation aqueous solution including the phosphoric acid supplying material. As a result, whitlockite having high purity and high crystallinity can be mass produced using a simple process.

Abstract: Provided is a method of manufacturing porous ceramic bodies with gradient of porosity, in which a gradient that is continuous to a pore size and porosity is precisely controlled in a simple way. The method includes the steps of: obtaining molded bodies by pressurizing and molding a mixture of powder obtained by mixing ceramic powder and polymer powder at a weight ratio of 1:1 to 100:1; and obtaining sintered bodies with gradient of porosity by sintering the molded bodies while applying a gradient pressure to the molded bodies.

Abstract: One-dimensional ring structures from M13 viruses were constructed by two genetic modifications encoding binding peptides and synthesis of a heterobifunctional linker molecule. The bifunctional viruses displayed an anti-streptavidin peptide and hexahistidine (SEQ ID NO:4) peptide at opposite ends of the virus as pIII and pIX fusions. Stoichiometric addition of the streptavidin-NiNTA linker molecule led to the reversible formation of virus-based nanorings with circumferences corresponding to lengths of the packagable DNAs. These virus-based ring structures can be further engineered to nucleate inorganic materials and form metallic, magnetic, or semiconductor nanorings using trifunctionalized viruses.