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. Focus24, 23 (2009) – Published December 15, 2009
A method combining a traditional laser pump-probe experiment with the detection of high-frequency sound and thermal waves reveals the microscopically bumpy interface between two apparently smooth surfaces.
Phys. Rev. Focus23, 9 (2009) – Published March 25, 2009
Water containing specialized nanoparticles can transport heat at two different rates, depending on the initial configuration of the particles. An improved version of this system could help regulate heat flow in devices.
Phys. Rev. Focus22, 7 (2008) – Published August 27, 2008
Slow-moving nanoparticles hitting a surface bounce away, but surprisingly, fast-moving ones stick. New simulations explain that the sticking occurs because the fast particles absorb the collision energy by transforming their atomic structure.