Scientists report the development of two novel devices that derive power directly from evaporation - a floating, piston-driven engine that generates electricity causing a light to flash, and a rotary engine that drives a miniature car.
Researchers have solved the long-standing conundrum of how the boundary between grains of graphene affects heat conductivity in thin films of the miracle substance - bringing developers a step closer to being able to engineer films at a scale useful for cooling microelectronic devices and hundreds of other nano-tech applications.
Researchers published first experimental results showing that ordinary nanocrystals possess intrinsic chirality and can be produced under normal conditions as a half-and-half mixture of mirror images of each other.
Researchers have developed a new technique for visualizing light propagation through an optical nanofiber. The result is a non-invasive measurement of the fiber size and shape and a real-time view of how light fields evolve along the nanofiber.
A research team has realized one of the long-standing theoretical predictions in nonlinear optical metamaterials: creation of a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies of light. Such a material, which doesn't exist naturally, had been predicted for nearly a decade.
Researchers have created stretchable, transparent conductors that work because of the structures' 'nano-accordion' design. The conductors could be used in a wide variety of applications, such as flexible electronics, stretchable displays or wearable sensors.
Researchers have used a variation of origami, called kirigami, as a design template for batteries that can be stretched to more than 150 percent of their original size and still maintain full functionality.