A package structure includes a backing plate, at least one pad, a frame, a side enclosing plate, a magnetic component and a fixing structure. The backing plate supports a target object. The pad is disposed on the backing plate and fixes the target object. The frame is disposed on a lower side of the backing plate and bonded to the backing plate. The frame supports the backing plate to fix the pad onto the backing plate. The side enclosing plate is disposed around the backing plate and connected to the pad to fix the pad. The magnetic component is disposed on the backing plate and attracting a magnetic coating on the target object. The fixing structure is disposed at an end portion of the frame and connected to the pad to fix the pad.

A microfluidic system includes a fluidic platform having a surface, a first liquid disposed onto the fluidic platform, and a droplet disposed onto the first liquid. The first liquid has a first temperature. The droplet has a second temperature higher than the first temperature so that the droplet is levitated above the first liquid by a cushion of vapor of the first liquid. In an embodiment, a device is configured to provide a magnetic field that has variable strength across the surface. A location of a magnetic droplet relative to the surface area is affected by the magnetic field. A method includes providing a fluidic platform, providing a magnetic field, introducing a first liquid onto the fluidic platform, introducing a first magnetic droplet onto the first liquid, and locally varying the magnetic field.

Described are systems and methods for magnetically assisted boom refueling. In certain examples, a magnetic refueling receiver is disclosed that includes a refueling receptacle configured to receive a portion of a refueling boom and a receptacle magnet disposed around at least a portion of a perimeter of the refueling receptacle. In another example, a magnetic refueling boom is disclosed that includes a refueling boom structure that includes a first end configured to be inserted into a refueling receiver and a pipe magnet disposed around at least a portion of a perimeter of the refueling boom structure.

An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may have coplanar power transmitting and power receiving coils. The transmitting coil may be positioned within a central opening of the receiving coil. The removable accessory may have an embedded receiving coil configured to receive wireless power from the transmitting coil of the electronic device. The receiving coil of the electronic device may receive wireless power from a power transmitting device such as charging mat. The receiving coil of the electronic device may operate up to a higher maximum power than the transmitting coil of the electronic device. The power transmitting coil and power receiving coil in the electronic device may operate at different power transmission frequencies. To mitigate crosstalk, the power transmitting coil's operation frequency may be a non-integer multiple of the power receiving coil's operation frequency.

A bimodal annular magnetic alignment component can be included in an electronic device that attaches to other electronic devices using a magnetic alignment system that includes a primary annular alignment component and a secondary annular alignment component having complementary (and fixed) magnetic orientations. In a bimodal alignment component, a set of alignment magnets can be reoriented or shifted between a first position in which a magnetic orientation of the bimodal alignment component is complementary to a primary annular alignment component and a second position in which a magnetic orientation of the bimodal alignment component is complementary to a secondary annular alignment component. A bimodal electronic device incorporating a bimodal alignment component can be interchangeably attached to another device via either a primary annular alignment component or a secondary annular alignment component.

A wireless power system has electronic devices that mate with each other to transfer wireless power. Each device may have a wireless power coil. Alignment magnets may be used to magnetically attach devices to each other so that the coils in the devices are aligned with respect to each other for wireless power transfer. The system may include first, second, and third devices. The first and third devices may have fixed alignment magnets with poles of opposite magnetic polarity that allow the first and third devices to be attached to each other so that their coils are aligned. The second device may have a reconfigurable alignment magnet that is operable in a first mode in which the second device is magnetically attached to the first device and a second mode in which the second device is magnetically attached to the third device.

A device for conveying a biological material includes a body including an aperture configured to enable connection with an outside of the body and a chamber configured to store a biological material, a plurality of conveyors accommodated in the body and configured to convey the material, and a driver configured to select one of the plurality of conveyors, align the selected conveyor with the aperture, and move the selected conveyor to the outside of the body through the aperture.

A device or an accessory may include a near-field communications antenna and a soft magnetic ring concentric with the near-field communications antenna. The device or accessory may further include at least one wireless charging coil concentric with the near-field communications antenna, a rectifier coupled to the at least one wireless charging coil, and a battery configured to receive a rectified voltage from the rectifier. The soft magnetic ring may be used to shunt magnetic flux from one or more nearby magnets in external electronic devices to prevent the magnets from repelling each other. The soft magnetic ring may be attracted to a magnet in an external device to help align wireless charging coils in the two mated devices.

Drive generator having a helical magnetic array. Additionally, a coupling portion is coupled to the drive generator and configured to be coupled to a vehicle. A drive member is configured to be at least partially located within the at least one drive generator, whereby the drive member is magnetically coupled to the at least one drive body. Furthermore, a prime mover is coupled to the drive member and configured to rotate the drive member, thereby imparting motion, when a portion of the drive member is located within the at least one drive generator, of the at least one drive generator relative to the drive member.

A package structure comprises a backing plate supporting a target object, at least one pad disposed on the backing plate and fixing the target object, a frame disposed on a lower side of the backing plate, bonded to the backing plate, and supporting the backing plate to fix the pad onto the backing plate, and a side enclosing plate disposed around the backing plate and connected to the pad to fix the pad. The package structure further comprises a magnetic component disposed on the backing plate and attracting a magnetic coating on the target object.