Abstract: A method of detecting a mental state includes receiving, in a processor, bio-signals of a subject from one or more bio-signal detectors, and determining in the processor whether the bio-signals represent the presence of a particular mental state in the subject. A method of using the detected mental state includes receiving, in a processor, a signal representing whether a mental state is present in the subject. The mental state can be a non-deliberative mental state, such as an emotion, preference or sensation. A processor can configured perform the methods, and a computer program product, tangibly stored on machine readable medium can have instructions operable to cause a processor to perform the methods.

Abstract: A heat transfer device includes a vapor chamber that houses a phase change material such as water. The heat transfer device may be selectively formed from a combination of polymeric and non-polymeric materials. In one embodiment, the vapor chamber is formed from a polymer layer surrounding a sealing layer formed from non-polymeric material. The heat transfer device may further include one or more fin members operable to diffuse heat from the vapor chamber to the ambient/outside environment. The fins may be solid structures, or may each define a fin chamber in communication with the vapor chamber. In one embodiment, the fin members are formed from non-polymeric material.

Abstract: A heat transfer device includes a chamber with a condensable fluid with an evaporative region coupled to a heat source. Within the chamber is a boiling-enhanced multi-wick structure.

Abstract: A heat transfer device includes a base chamber, a fin chamber, and at least one fin. The chambers can be thermally coupled. The heat transfer device also includes a wick structure. The wick structure can include a multi-wick structure. The multi-wick structure can include a three-dimensional wick structure and/or a spatially varying wick structure.