Abstract: In an aspect, a Co2Z-type ferrite comprises oxides of at least Me, Co, Mo, Li, and Fe; wherein Me is at least one of Ba or Sr. In another aspect, the Co2Z-type ferrite comprises a Z-type hexaferrite an amount of lithium molybdate. In another aspect, the Co2Z-type ferrite has a formula Li2MoO4·BaxSr3-xCo2+y?zMe?yMe?zFe24-2y-mO41, wherein Me? is at least one of Ti, Mo, Ru, Ir, Zr, or Sn; Me? is at least one of Zn, Mn, or Mg; x is 0 to 3; y is 0 to 1.8; z is 0 to 1.8; and m is ?4 to 4. In yet another aspect, a method of making a Co2Z-type ferrite comprises milling an initial Co2Z-type ferrite and Li2MoO4 to form a mixed ferrite; and calcining the mixed ferrite to form the Co2Z-type ferrite.

Abstract: This invention relates to compositions and methods of microbial enhanced oil recovery using biochemical-producing microbes. In specific embodiments, the methods of the subject invention comprise applying a biosurfactant-producing bacteria and/or a growth by-product thereof to an oil-producing site. In preferred embodiments, the bacteria is a strain of Bacillus in spore form. In some embodiments, the methods further comprise applying the bacteria with a yeast fermentation product, an alkaline compound, a polymer, a non-biological surfactant, and/or one or more chelating agents. Advantageously, the subject invention can be useful for stimulating the flow of oil from a well, as well as dissolving scale present in an oil-bearing formation.

Abstract: A dual band antenna includes a substrate having a magnetodielectric material, and an electrically conductive patch disposed on the substrate, wherein the patch has at least one in-plane cutout having an H-shape or an I-shape, as observed in a plan view of the patch.

Abstract: This invention relates to compositions and methods of microbial enhanced oil recovery using biochemical-producing microbes. In specific embodiments, the methods of the subject invention comprise applying a biosurfactant-producing bacteria and/or a growth by-product thereof to an oil-producing site. In preferred embodiments, the bacteria is a strain of Bacillus in spore form. In some embodiments, the methods further comprise applying the bacteria with a yeast fermentation product, an alkaline compound, a polymer, a non-biological surfactant, and/or one or more chelating agents. Advantageously, the subject invention can be useful for stimulating the flow of oil from a well, as well as dissolving scale present in an oil-bearing formation.

Abstract: Provided is a method for preparing copper azide and cuprous azide encapsulated by conductive metal-organic framework. The method uses a conductive copper-containing metal-organic framework material as a precursor, and completes the azidation of the precursor by means of a liquid-solid electrochemical azidation reaction. Copper azide and cuprous azide nanocrystals are highly uniformly embedded within a conductive framework, which may effectively avoid the agglomeration of copper azide and cuprous azide, and reduce static charge generated by friction, displacement, and the like. Meanwhile, the conductive framework may promote the effective transfer of charge, avoid the accumulation of static charge, and improve the electrostatic safety.

Abstract: A polycrystalline ferrite composition comprises a formula of M5Me2Ti3Fe12O31, wherein M is Ba2+, Sr2+, or a combination thereof; and Me is Mg2+, Zn2+, Cu2+, Co2+, or a combination thereof; and has an average grain size of 1 micrometer to 100 micrometers. A composite comprises a polymer matrix; and the polycrystalline ferrite composition. Methods of making the polycrystalline ferrite composition and the composite are also disclosed.

Abstract: A NiHf- or NiTi-doped Co2Y-type ferrite, having a formula of Ban-xSrxCo2-yCuyNizHfzFe(m-2z)O22 or Ban-xSrxCo2-yCuyNizTizFe(m-2z)O22 wherein 2?n?2.4. 0?x?1, 0.1?y?1, 0<z?2, and 10?m?13.

Abstract: A ferrite composition having a formula of BaxNi2-yCuyTi3FezO31, wherein 4.5?x?5.5 0<y<2 or 0.05?y?1.5, and 11?z?13.

Abstract: An antenna includes: a substrate having a magnetodielectric material; and, an electromagnetic, EM, radiator having an electrically conductive material disposed on an upper surface of the substrate, the EM radiator including a plurality of chamfered sides extending contiguously from one another to define an octagon-shaped EM radiator.

Abstract: A multiphase ferrite composition includes a primary phase consisting of a MnZn ferrite matrix; and 0.01 to 10 weight percent microscaled inclusion particles comprising an orthoferrite RFeO3 wherein R is a rare earth ion, yttrium iron garnet (YIG), or a combination thereof, wherein the microscaled inclusion particles have an average particle size (D50) of 0.1 micron to 5 microns, and wherein the D50 of the microscaled inclusion particles is smaller than the average particle size (D50) of the MnZn ferrite particles; and optionally 0.01 to 5 weight percent additive; wherein weight percent is based on the total weight of the multiphase ferrite composition. A method of manufacturing the multiphase ferrite composition is also disclosed.

Abstract: An electromagnetic device includes: a substrate comprising an elongated aperture having an overall length, L, and an overall width, W, as observed in a plan view of the device, where L is greater than W; a dielectric medium comprising a dielectric material other than air disposed on the substrate substantially covering the aperture, the dielectric medium having a cross sectional boundary, as viewed in the plan view of the device, that is symmetrical with respect to an in-plane axis of reflection of the dielectric medium; wherein the device is configured such that a line perpendicular to the overall length L of the elongated aperture and passing through a center point of the elongated aperture is not any in-plane axis of reflection.

Abstract: The subject invention provides microbe-based products and efficient methods of producing them. In specific embodiments, methods are provided for enhanced production of microbial biosurfactants, the methods comprising co-cultivating Myxococcus xanthus and Bacillusamyloliquefaciens. In preferred embodiments, co-cultivation is carried out continuously for an indefinite period of time. Microbe-based products produced according to the subject methods are also provided, as well as their uses in, for example, agriculture, oil and gas recovery, and health care.

Abstract: An antenna includes a substrate and an electromagnetic, EM, radiator. The substrate includes a magnetodielectric material. The EM radiator includes an electrically conductive material disposed on an upper surface of the substrate. The EM radiator further includes a root, and a pair of forks that are contiguous with and extend from the root along a first axis. The pair of forks are separated from one another by a slot in the electrically conductive material of the EM radiator to define a fork-shaped EM radiator. The root includes a bridge portion extending between the pair of forks in a direction of a second axis perpendicular to the first axis to electrically connect together the pair of forks.

Abstract: In an aspect, a Co2Y-type ferrite includes oxides of at least Ba, La, Co, Me, Fe, and optionally Ca; wherein Me is at least Ni and optionally one or more of Zn, Cu, Mn, or Mg. A composite can include the Co2Y-type ferrite and a polymer. An article can include the Co2Y-type ferrite.

Abstract: In an aspect, a ferrite composition comprises a BiRuCo-M-type ferrite having the formula Me1-xBixCoyRuzFe12-tO19, wherein Me is at least one of Sr, Pb, or Ba; x is 0.01 to 0.5; y is 0.1 to 2; z is 0 to 4, and t is 0 to 4; wherein the Co can be at least partially replaced by at least one of Zn, Cu, or Mg by an amount of less than y, and the Ru can be at least partially replaced by at least one of Ti, Sn, or Zr, where the substitution amount is not more than z or is less than z.

Abstract: In an aspect, an M-type ferrite comprises an element Me comprising at least one of Ba, Sr, or Pb; an element Me? comprising at least one of Ti, Zr, Ru, or Ir; and an element Me? comprising at least one of In or Sc. In another aspect, a method of making the M-type ferrite can comprise milling ferrite precursor compounds comprising oxides of at least Co, Fe, Me, M3?, and Me? to form an oxide mixture; wherein Me comprises at least one of Ba, Sr, or Pb; Me? is at least one of Ti, Zr, Ru, or Ir; and Me? is at least one of In or Sc; and calcining the oxide mixture in an oxygen or air atmosphere to form the ferrite.

Abstract: In an aspect, an R-type ferrite has the formula: Me?3Me2TiFe12O25, wherein Me? is at least one of Ba2+ or Sr2+ and Me is at least one of Co2+, Mg2+, Cu2+, or Zn2+. In another aspect, a composite or an article comprises the R-type ferrite. In yet another aspect, a method of making a R-type ferrite comprises milling ferrite precursor compounds comprising oxides of at least Fe, Ti, Me, and Me?, to form an oxide mixture; wherein Me? comprises at least one of Ba2+ or Sr2+; Me is at least one of Co2+, Mg2+, Cu2+, or Zn2+; and calcining the oxide mixture in an oxygen or air atmosphere to form the R-type ferrite.

Abstract: In an aspect, an M-type ferrite, comprises oxides of Me, Me?, Me?, Co, Ti, and Fe; wherein Me is at least one of Ba, Sr, or Pb; Me? is at least one of Ti, Zr, Ru, or Ir; and Me? is at least one of Mg or Ca. In another aspect, a method of making an M-type ferrite comprises milling ferrite precursor compounds comprising oxides of at least Co, Fe, Ti, Me, Me?, and Me?, to form an oxide mixture; wherein Me comprises at least one of Ba, Sr, or Pb; Me? is at least one of Ti, Zr, Ru, or Ir; and Me? is at least one of Mg or Ca; and calcining the oxide mixture in an oxygen or air atmosphere to form the M-type ferrite.

Abstract: Described herein is a nanocrystalline ferrite having the formula Ni1?x?yMyCoxFe2+zO4, wherein M is at least one of Zn, Mg, Cu, or Mn, x is 0.01 to 0.8, y is 0.01 to 0.8, and z is ?0.5 to 0.5, and wherein the nanocrystalline ferrite has an average grain size of 5 to 100 nm. A method of forming the nanocrystalline ferrite can comprise high energy ball milling.

Abstract: In an aspect, a Co2Z ferrite has the formula: (Ba1-xSrx)3Co2+yMyFe24-2y-zO41. M is at least one of Mo, Ir, or Ru. The variable x can be 0 to 0.8, or 0.1 to 0.8. The variable y can be 0 to 0.8, or 0.01 to 0.8. The variable z can be ?2 to 2. The Co2Z ferrite can have an average grain size of 5 to 100 nanometers, or 30 to 80, or 10 to 40 nanometers as measured using at least one of transmission electron microscopy, field emission scanning electron microscopy, or x-ray diffraction.