Phys. Rev. Focus27, 24 (2011) – Published June 17, 2011
The stiffness of a single gold atom–measured as a material property–is at least twice that of a macroscopic chunk of gold, according to measurements of a sharp gold point pressed against a gold surface.
Phys. Rev. Focus27, 22 (2011) – Published June 3, 2011
Theorists created a gravitational model that is mathematically analogous to one for a standard superconducting device, extending the ways that the tools of general relativity can lead to insights into condensed matter physics.
Phys. Rev. Focus27, 21 (2011) – Published May 27, 2011
Complex structures appear spontaneously in a plasma in a strong magnetic field. The work explores a new regime of plasma behavior that could be relevant for industry and demonstrates a new technique for imaging plasma dynamics.
Phys. Rev. Focus27, 17 (2011) – Published April 29, 2011
Liquid sodium agitated gently in a rotating tank can significantly amplify a magnetic field. The experiment is the first step toward demonstrating a self-sustaining field in a low-turbulence fluid, which may be analogous to Earth’s core.
Phys. Rev. Focus27, 5 (2011) – Published February 4, 2011
Time travel isn’t forbidden by physical laws. A new consistency condition for time traveling quantum states eliminates any possibility of so-called grandfather paradoxes, in which a time-traveler kills her own ancestor.