There are described magnetic nanoparticles the surface of which is functionalized with catechol and constructs comprising a plurality of said nanoparticles encapsulated in a biocompatible polymer matrix, wherein a molecule with therapeutic action is optionally dispersed, said polymer matrix optionally being in turn further functionalized; there are further described cells of the immune system incorporating said polymeric constructs giving rise to their engineering.

The invention relates to heterostructures including a layer of a two-dimensional material placed on a multiferroic layer. An ordered array of differing polarization domains in the multiferroic layer produces corresponding domains having differing properties in the two-dimensional material. When the multiferroic layer is ferroelectric, the ferroelectric polarization domains in the layer produce local electric fields that penetrate the two-dimensional material. The local electric fields can influence properties of the two-dimensional material, including carrier density, transport properties, optical properties, surface chemistry, piezoelectric-induced strain, magnetic properties, and interlayer spacing. Methods for producing the heterostructures are provided. Devices incorporating the heterostructures are also provided, including tunable sensors, optical emitters, and programmable logic gates.

The present invention relates to a method of manufacturing a superparamagnetic nanocomposite and a superparamagnetic nanocomposite manufactured using the same, and more particularly to a method of manufacturing a superparamagnetic nanocomposite suitable for use in magnetic separation for the detection of a target biomaterial and a superparamagnetic nanocomposite manufactured using the same. The method of manufacturing the superparamagnetic nanocomposite according to the present invention has a higher yield and a high rate without complicated processing than a conventional method of manufacturing a magnetic nanoparticle for magnetic separation and is capable of mass production of the superparamagnetic nanocomposite having excellent properties with uniform size and particle size distribution, high aqueous solution dispersibility and high magnetization and being capable of maintaining superparamagnetism.

Provided is an ion-conducting layer including: an ion conductive matrix; and a 1D composite dispersed in the ion conductive matrix and oriented in a membrane thickness direction, in which the 1D composite includes a core of a non-conductive 1D nanostructure; an intermediate layer enclosing the core and having magnetic nanoparticles bonded to a surface thereof; and a surface layer conducting the same kind of ions as ions in the matrix.

A magnetic member for attachment to a surface has a first layer of material connected to a second layer of material and a plurality of spaced metal strips or metal particles are disposed between the first and second layers of material. The spaced metal strips or metal particles are adapted to magnetically attract a magnetic material attached to an object.

A method for preparing ferrite nanoparticles employing as directing agent an aldehyde or ketone of formula R.sub.1—(C═O)R.sub.2 is provided. R.sub.1 is a linear or branched, saturated or unsaturated carbon chain having a length between 1 and 13 carbon atoms, optionally substituted with an aromatic substituent. R.sub.2 is selected from the group consisting of hydrogen, an aromatic ring and a linear or branched, saturated or unsaturated carbon chain having a length between 1 and 10 carbon atoms. When R.sub.2 is hydrogen and R.sub.1 is an unsaturated carbon chain substituted with an aromatic substituent, the aromatic substituent is located at position 3 or higher with respect to the carbonyl group —(C═O). When R.sub.2 is hydrogen and R.sub.1 is a saturated carbon chain substituted with an aromatic substituent, the aromatic substituent is located at position 2 or higher with respect to the carbonyl group —(C═O). When the aromatic substituent is located at position 2, the aromatic substituent is the sole substituent at position 2.

According to one embodiment, a multi-layer magnetic nanoparticle includes a core; a first magnetic layer deposited on a surface of the core; a second magnetic layer deposited on a surface of the first magnetic layer, and a third magnetic layer deposited on a surface of the second magnetic layer. The core, the first magnetic layer, the second magnetic layer, and the third magnetic layer comprise different magnetic anisotropies and/or saturation magnetizations with respect to each other.

A capsule is disclosed which includes a flexible outer shell capable of transforming into an asymmetric shape; an internal medium encapsulated by the outer shell, the medium including a plurality of magnetic particles, wherein the magnetic particles can move in response to an applied magnetic field. A valve system includes an in-line valve sized to fit within a flow channel including a capsule having a flexible outer shell containing an internal medium encapsulated by the outer shell, the medium including a plurality of magnetic particles; and a magnetic field source disposed about the exterior wall of the channel.

An electromagnetic actuator includes an electromagnetic coil, a yoke serving as a magnetic path of a magnetic flux of the electromagnetic coil, an armature configured to move in an axial direction while being attracted by the yoke by energization of the electromagnetic coil, and a housing that houses the armature. The armature and the housing are coupled to each other by an engagement structure in which protrusions provided on one of the members engage with engagement grooves formed in the other one of the members. At least a part of the engagement groove is inclined with respect to the axial direction. When the armature moves while being attracted by the yoke, the protrusions of the armature slide along the engagement grooves of the housing, and the armature turns relative to the housing along the inclination of the engagement grooves.

The present disclosure concerns materials and compositions for application to an inductive heating or cooling and/or magnetocaloric and/or thermoelectric heating or cooling apparatus. The present disclosure provides, in part, materials and compositions for application in a thermoelectric cell or Peltier cell. The present disclosure further provides, in part, paramagnetic materials and compositions are optimized for use in inductive heating or magnetocaloric or thermoelectric cooling and/or heating devices in order to provide consistent magnetic susceptibility and high thermal conductivity properties.