Abstract: Footwear includes a shell including an outsole portion; and a sole body including a footbed portion. The footbed portion includes a shock absorbing portion formed of a three-dimensional mesh structure body so as to extend to a peripheral surface of the footbed portion. An engaged portion is disposed in an inner side surface of the outsole portion, and an engaging portion is disposed in a portion of the shock absorbing portion that corresponds to the peripheral surface. One of the engaged portion and the engaging portion is a protruding portion while the other one of the engaged portion and the engaging portion is a cutout portion provided as a recessed portion or a hole portion. An occupied volume ratio of a region including at least a portion defining the engaging portion in the shock absorbing portion is locally increased.

Abstract: A nitride contains zinc and a group 4 element. The group 4 element contained in the nitride is at least one kind of element selected from the group consisting of titanium and zirconium. A content of zinc in the nitride is expressed as [Zn] atomic %. A total content of the group 4 element in the nitride is expressed as [M] atomic %. In the nitride, [M]/([Zn]+[M]) is more than 20% and less than 50%.

Abstract: A shoe sole 1 includes a bottom part 20 and a deformation restraining part 30. The bottom part 20 includes: a rear bottom surface part 24 formed to extend from a rearfoot to a midfoot portion and to be, when the shoe sole is placed on a virtual surface S as a flat surface, in contact with the virtual surface S; and a toe portion 26 of which a height from the virtual surface S is set to 100% or greater and 250% or less with respect to a thickness in the rear bottom surface part 24. The deformation restraining part 30 is disposed in an edge part on a medial side and a lateral side of the bottom part 20 and extends from a forefoot to the midfoot portion along the bottom part 20. The deformation restraining part 30 has higher hardness than the bottom part 20.

Abstract: A plate includes: a curved portion located in a forefoot region and shaped to curve toward a flat plane; a midfoot supporting portion located in a midfoot region; and a rear-foot supporting portion located in a rear foot region. The curved portion has a wide region including a wide portion of which dimension in a width direction is largest in the curved portion. The midfoot supporting portion has a narrow region including a narrow portion of which dimension in the width direction is smallest in the midfoot supporting portion. A ratio of a bending rigidity of the narrow region to a bending rigidity of the wide region is 0.4 or more and 0.85 or less.

Abstract: This ScAlN laminate includes a substrate, an intermediate layer formed on the substrate and a ScAlN thin film formed on the intermediate layer, and a nearest neighbor distance, which is a distance between atoms closest to each other in a lattice plane parallel to a surface of the intermediate layer, is shorter than the a-axis length of the ScAlN thin film.

Abstract: An object is to provide a piezoelectric body having a value indicating a higher performance index (d33, e33, C33, g33, and/or k2) than aluminum nitride not doped with any element. The piezoelectric body is represented by a chemical formula Al1-X-YMgXMYN where X+Y is less than 1, X is in a range of more than 0 and less than 1, and Y is in a range of more than 0 and less than 1.

Abstract: There are provided a piezoelectric body of ytterbium-doped aluminum nitride, having a greater piezoelectric coefficient d33 or g33 than those not doped with ytterbium, and a MEMS device using the piezoelectric body. The piezoelectric body is represented by a chemical formula Al1-xYbxN where a value of x is more than 0 and less than 0.37 and having a lattice constant ratio c/a in a range of 1.53 or more and less than 1.6. The piezoelectric body with such a configuration has a greater piezoelectric coefficient d33 or g33 than those not doped with ytterbium.

Abstract: Footwear includes a footbed portion including a support region. The support region includes an upper surface-side projection portion forming region having a plurality of upper surface-side projection portions. A maximum outer dimension in a cross-section orthogonal to a projecting direction of each of the plurality of upper surface-side projection portions is not greater than 3.0 mm. A projection length of each of the plurality of upper surface-side projection portions is not less than 4.0 mm and not greater than 13.0 mm, and an arrangement density of the plurality of upper surface-side projection portions in the upper surface-side projection portion forming region is not less than 10% and not greater than 100% in terms of an area ratio. An elastic modulus of a material forming the plurality of upper surface-side projection portions is not less than 0.1 MPa and not greater than 100 MPa.

Abstract: Footwear includes a shell including an outsole portion; and a sole body including a footbed portion. The footbed portion includes a shock absorbing portion formed of a three-dimensional mesh structure body so as to extend to a peripheral surface of the footbed portion. An engaged portion is disposed in an inner side surface of the outsole portion, and an engaging portion is disposed in a portion of the shock absorbing portion that corresponds to the peripheral surface. One of the engaged portion and the engaging portion is a protruding portion while the other one of the engaged portion and the engaging portion is a cutout portion provided as a recessed portion or a hole portion. An occupied volume ratio of a region including at least a portion defining the engaging portion in the shock absorbing portion is locally increased.

Abstract: Footwear includes a sole portion that supports a foot sole of a foot of a wearer, the sole portion including a ground contact surface and a shock absorbing portion formed of an elastic body. The shock absorbing portion includes a three-dimensional mesh structure portion in which a plurality of unit structures are repeatedly arranged so as to be adjacent to each other and an irregularly shaped portion that has a different shape from each of the unit structures and is at least partially embedded in the three-dimensional mesh structure portion. The irregularly shaped portion includes a protruding plate portion in which a central portion protrudes relative to a peripheral edge portion in a direction orthogonal to the ground contact surface.

Abstract: Provided is a scandium-doped aluminum nitride with nitrogen polarity. The nitride material is represented by the chemical formula ScXMYAl1-X-YN. M is at least one or more elements among C, Si, Ge, and Sn, X is greater than 0 and not greater than 0.4, Y is greater than 0 and not greater than 0.2, and X/Y is less than or equal to 5. The nitride material has piezoelectricity with a polarization direction of nitrogen polarity opposite to the direction of thin film growth.

Abstract: A shoe sole 1 includes a bottom part 20 and a deformation restraining part 30. The bottom part 20 includes: a rear bottom surface part 24 formed to extend from a rearfoot to a midfoot portion and to be, when the shoe sole is placed on a virtual surface S as a flat surface, in contact with the virtual surface S; and a toe portion 26 of which a height from the virtual surface S is set to 100% or greater and 250% or less with respect to a thickness in the rear bottom surface part 24. The deformation restraining part 30 is disposed in an edge part on a medial side and a lateral side of the bottom part 20 and extends from a forefoot to the midfoot portion along the bottom part 20. The deformation restraining part 30 has higher hardness than the bottom part 20.

Abstract: A plate is used for a sole that forms a part of a shoe. The plate includes a mid- and rear-foot support portion in a shape extending from a position superimposed on a rear end portion of a metatarsal bone of a wearer of the shoe in a thickness direction of the sole to a position superimposed on a heel bone of the wearer, the mid- and rear-foot support portion supporting a midfoot portion and a rear foot portion of the wearer. The mid- and rear-foot support portion is in a shape convex upward in a cross-section in a foot width direction.

Abstract: Provide are a nitride piezoelectric body having a value indicating a performance index (at least any one of d33, g33, and K2) higher than that of aluminum nitride not doped with any element, and a MEMS device using the same. The nitride piezoelectric body is a piezoelectric body represented by chemical formula Al1-X-YMgXTaYN, wherein X+Y is less than 1, X is in a range of more than 0 and less than 1, and Y is in a range of more than 0 and less than 1, and Ta includes tetravalent tantalum.

Abstract: A plate includes: a curved portion located in a forefoot region and shaped to curve toward a flat plane; a midfoot supporting portion located in a midfoot region; and a rear-foot supporting portion located in a rear foot region. The curved portion has a wide region including a wide portion of which dimension in a width direction is largest in the curved portion. The midfoot supporting portion has a narrow region including a narrow portion of which dimension in the width direction is smallest in the midfoot supporting portion. A ratio of a bending rigidity of the narrow region to a bending rigidity of the wide region is 0.4 or more and 0.85 or less.

Abstract: An object is to provide a piezoelectric body having a value indicating a higher performance index (d33, e33, C33, g33, and/or k2) than aluminum nitride not doped with any element. The piezoelectric body is represented by a chemical formula Al1-X-YMgXMYN where X+Y is less than 1, X is in a range of more than 0 and less than 1, and Y is in a range of more than 0 and less than 1.

Abstract: The shoe 100 includes the outer sole 10 brought in contact with the road surface, the midsole 20 arranged on the outer sole 10, and the upper 9 covering the foot from the upper side. The midsole 20 includes at the middle foot portion the cut-out portion 21 and the like opened to the outside and closed at the middle portion in the width direction.

Abstract: There are provided a piezoelectric body of ytterbium-doped aluminum nitride, having a greater piezoelectric coefficient d33 or g33 than those not doped with ytterbium, and a MEMS device using the piezoelectric body. The piezoelectric body is represented by a chemical formula Al1-xYbxN where a value of x is more than 0 and less than 0.37 and having a lattice constant ratio c/a in a range of 1.53 or more and less than 1.6. The piezoelectric body with such a configuration has a greater piezoelectric coefficient d33 or g33 than those not doped with ytterbium.