Abstract: An information processing device includes; a memory; and a processor coupled to the memory and configured to: optimize performance of a mixture of a plurality of substances; in an energy function formula for weighting each of a plurality of physical properties in the mixture and performing a calculation to optimize the performance of the mixture, collectively incorporate a plurality of the physical properties that has a relationship correlated with one characteristic among the plurality of the physical properties into the energy function formula as the one characteristic; and simplify the energy function formula.

Abstract: An optimization device is configured to perform an iteration processing until a predetermined condition is satisfied, the iteration processing including: processing of generating a quadratic function that is approximate to an objective function within a predetermined range from a first reference value that indicates a value of a variable of the objective function; processing of calculating a second reference value that indicates a value of the variable by seeking for an extreme value of the quadratic function; processing of calculating a third reference value that indicates a value of the variable based on the second reference value and the first reference value; and processing of updating the first reference value based on the third reference value, the predetermined condition being a condition regarding a distance between the first reference value and the second reference value or a distance between the first reference value and the third reference value.

Abstract: An information processing device includes; a memory; and a processor coupled to the memory and configured to: optimize performance of a mixture of a plurality of substances; in an energy function formula for weighting each of a plurality of physical properties in the mixture and performing a calculation to optimize the performance of the mixture, collectively incorporate a plurality of the physical properties that has a relationship correlated with one characteristic among the plurality of the physical properties into the energy function formula as the one characteristic; and simplify the energy function formula.

Abstract: An Information processing device includes: a memory; and a processor coupled to the memory and configured to: create a loop graph that has intra-cell nodes that indicate atoms in one unit cell of a crystalline material, an intra-cell edge that indicates a chemical bond between atoms In the unit cell, and a loop edge that indicates the chemical bond, which is virtual, between atom X in the unit cell and atom Y in the unit cell corresponding to atom Y? in an adjacent unit cell that is adjacent to the unit cell, in which the atom Y? has the chemical bond with the atom X; and analyze the crystalline material by using the graph.

Abstract: A structure formed with a plurality of molecules that have interactions is searched by a computer. The computer performs a process including: preparing position bits of a number calculated based on the number of constituent units included in the plurality of molecules and the number of molecules included in the plurality of molecules for each constituent unit in each molecule included in the plurality of molecules, and searching the structure formed with the plurality of molecules that have the interactions based on a cost function that includes (A-1) a negative interaction, (A-2) an original interaction, (B-1) a constraint that each of the constituent units in the one molecule exists in one of the position bits, and (B-2) a constraint that one or no constituent unit exists in any one of the plurality of molecules in the position bits.

Abstract: A semiconductor bulk structure includes a bulk structure including a portion where two layers of GeSe and one layer of WS2 are alternately laminated. And an optical device includes a semiconductor bulk structure having a bulk structure including a portion where two layers of GeSe and one layer of WS2 are alternately laminated.

Abstract: A transistor includes a channel layer in which a plurality of graphene whose edge portions are terminated with modifying groups different from each other are bonded to each other; a gate electrode formed on the channel layer via a gate insulating film; and a source electrode and a drain electrode formed on the channel layer.

Abstract: A transistor includes a channel layer in which a plurality of graphene whose edge portions are terminated with modifying groups different from each other are bonded to each other; a gate electrode formed on the channel layer via a gate insulating film; and a source electrode and a drain electrode formed on the channel layer.

Abstract: A spin filter includes a first electrode configured to be formed with a zigzag graphene ribbon with an even number of rows extending in a first direction, and to have a magnetic moment in a second direction crossing with the first direction; a second electrode configured to be formed with a zigzag graphene ribbon with an even number of rows extending in the first direction, and to have a magnetic moment in the second direction; and a channel region configured to be placed between the first electrode and the second electrode, and to have an energy level allowing up-spin electrons or down-spin electrons to pass.

Abstract: A spin filter includes a first electrode configured to be formed with a zigzag graphene ribbon with an even number of rows extending in a first direction, and to have a magnetic moment in a second direction crossing with the first direction; a second electrode configured to be formed with a zigzag graphene ribbon with an even number of rows extending in the first direction, and to have a magnetic moment in the second direction; and a channel region configured to be placed between the first electrode and the second electrode, and to have an energy level allowing up-spin electrons or down-spin electrons to pass.