A magnetically driven hopping soft robot based on magnetically programmed temperature-sensitive hydrogels includes first moving bodies and a second moving body. Several first moving bodies are distributed evenly on a bottom portion of the second moving body. The first moving bodies are made of a temperature-responsive hydrogel containing magnetic particles. An alternating magnetic field is applied to the first moving bodies to cause the first moving bodies to deform due to magnetocaloric effect. The first moving bodies have a two-layered structure. A first layer is made of a double-network cross-linked hydrogel and a second layer is made of a magnetic temperature-responsive hydrogel with added magnetic nanoparticles. An alternating magnetic field is applied to the first moving bodies in a manner that an amount of deformation of the second layer is greater than that of the first layer. The second layer is made of a temperature-responsive hydrogel with added magnetic nanoparticles.

The invention provides materials, and in particular, magnetic materials, for the universal immobilization of enzymes and enzyme systems. Described herein are highly magnetic and highly porous composite blends of thermoplastics with magnetic particles to form powders, single-layered, or multiple-layered materials that are used as scaffolds for magnetically immobilized enzymes known as bionanocatalysts (BNCs). Designed objects are produced using 3D printing by sintering composite magnetic powders. In some embodiments, Selective Laser Sintering (SLS) is used. The invention provides the use of the material compositions for 3D printing of enzyme supports and flow cells allowing continuous production of, e.g., small molecules.

A product includes a nanostructure having a core and a shell. The core has a coercive field of at least 3 kOe and the shell has a saturation magnetization of at least 50 emu per gram. A product includes a nanostructure having a core and a shell. The shell has a coercive field of at least 3 kOe and the core has a saturation magnetization of at least 50 emu per gram. A method includes forming core/shell nanostructures and forming millimeter wave absorbers including the core/shell nanostructures and a support structure.

The present application relates to a composition, a 3D printing method using the same, and a three-dimensional shape comprising the same, and provides a composition capable of embodying a precise formation of a three-dimensional shape using a ceramic material and a uniform curing property of the three-dimensional shape.

Embodiments of the present disclosure provide a flexible base material, a preparation method of the flexible base material, a flexible substrate and a preparation method of the flexible substrate. The flexible base material includes: a host flexible material; and carriers dispersed in the host flexible material and having magnetic particles adsorbed thereon, and the carriers have organophilic functional groups on their surface.

A magnetically driven hopping soft robot based on magnetically programmed temperature-sensitive hydrogels includes first moving bodies and a second moving body. Several first moving bodies are distributed evenly on a bottom portion of the second moving body. The first moving bodies are made of a temperature-responsive hydrogel containing magnetic particles. An alternating magnetic field is applied to the first moving bodies to cause the first moving bodies to deform due to magnetocaloric effect. The first moving bodies have a two-layered structure. A first layer is made of a double-network cross-linked hydrogel and a second layer is made of a magnetic temperature-responsive hydrogel with added magnetic nanoparitcles. An alternating magnetic field is applied to the first moving bodies in a manner that an amount of deformation of the second layer is greater than that of the first layer. The second layer is made of a temperature-responsive hydrogel with added magnetic nanoparticles.

An electromagnetic shielding film and a method for making the same. The method includes: dispersing a conductive agent and a magnetic nanomaterial in sodium alginate solutions to form an electrically conductive shielding solution and a magnetic field shielding solution, respectively; applying the electrically conductive and magnetic field shielding solutions onto two opposite surfaces of a transparent substrate to form an electrically conductive shielding layer and a magnetic field shielding layer, respectively, so that an electromagnetic shielding film precursor of a sandwich structure is obtained; and placing the film precursor in a calcium chloride solution to perform a crosslinking process to cure the layers, so as to obtain an electromagnetic shielding film product after being rinsed and dried. The electric and magnetic fields shielding layers of the film can each have a uniform thickness and cooperate to provide an improved shielding effect and superior performances for the film.

A secured device includes an electronic component and a protective cover surrounding the electronic component. The secured device also includes one or more chemiluminescent reactant layers and a light sensor that is electrically connected to the electronic component. The one or more chemiluminescent reactant layers are disposed between the protective cover and the electronic component and include multiple reactants that undergo a chemiluminescent reaction. The light sensor is configured to trigger one or more tamper response operations responsive to detection of a photon generated by the chemiluminescent reaction.

The present application relates to a composition for 3D printing, a 3D printing method using the same, and a three-dimensional shape comprising the same, and provides a composition for 3D printing capable of embodying a precise formation of a three-dimensional shape using a ceramic material and a uniform curing property of the three-dimensional shape.

An object of the present invention is to provide ferrite particles having high saturation magnetisation and electrical resistivity, excellent in dispersibility in a resin, a solvent, or a resin composition; a rein composition containing the ferrite particles; and a resin molding composed of the resin composition. A Ni-Zn-Cu ferrite particle is in a single crystalline body having an average particle diameter of 1 to 2000 nm, has a polyhedral particle shape, and comprises 5 to 10 wt % of Ni, 15 to 30 wt % of Zn, 1 to 5 wt % of Cu, and 25 to 50 wt % of Fe.