Abstract: A carrier includes a body and a cover portion. The body has a generally circular bottom portion and a generally circular top portion and an opening in the top portion. The bottom portion is configured to be placed on a surface. The opening is the only opening sized and configured to enable an animal to enter or exit the body and enables an animal to enter or exit the body in a vertical manner when the bottom portion is placed on the surface. The cover portion is sized and configured to fit within the opening of the top portion. The cover portion is hingedly attached to the top portion at a first side and includes a latching mechanism at a second side. The latching mechanism enables the cover to be disposed in a latched state to close the opening in the top portion.

Abstract: Microelectronic devices for harvesting kinetic energy and/or detecting motion, and associated systems and methods. Particular embodiments include an energy harvesting device for generating electrical energy for use by microelectronic devices, where the energy harvesting device converts to electrical energy the kinetic energy among or within the microelectronic devices and their packaging, and provides this electrical energy to power the microelectronic devices.

Abstract: Magnetically actuated fluid handling devices using magnetic fluid to move one or more fluids (gases or liquids or both) through microsized flow channels are provided. Fluid handling devices include micropumps and microvalves. Magnetically actuated slugs of magnetic fluid are moved within microchannels of a microfluidic device to facilitate valving and/or pumping of fluids and no separate pump is required. The magnets used to control fluid movement can be either individual magnets moved along the flow channels or one or more arrays of magnets whose elements can be individually controlled to hold or move a magnetic slug. Fluid handling devices include those having an array of electromagnets positioned along a flow channel which are turned on and off in a predetermined pattern to move magnetic fluid slugs in desired paths in the flow channel. The fluid handling devices of the present invention can handle gases and liquids simultaneously and thus can be made to be self-priming.