Terahertz emission from gold nanorods irradiated by ultrashort laser pulses of different wavelengths.

Electron photoemission and ponderomotive acceleration by surface enhanced optical fields is considered as a plausible mechanism of terahertz radiation from metallic nanostructures under ultrafast laser excitation. To verify this mechanism, we studied experimentally terahertz emission from an array of gold nanorods illuminated by intense (~10-100 GW/cm) femtosecond pulses of different central wavelengths (600, 720, 800, and 1500 nm). We found for the first time that the order of the dependence of the terahertz fluence on the laser intensity is, unexpectedly, almost the same (~4.

Reversible Size Control of Liquid-Metal Nanoparticles under Ultrasonication.

This paper describes the reversible control of the size of liquid-metal nanoparticles under ultrasonication. Gallium was utilized as a liquid metal, which has a melting point of 29.8 °C.

Effectiveness of the direct renin inhibitor, aliskiren, in patients with resistant hypertension.

Currently there is no consensus regarding which add-on therapy to use in resistant hypertension. We have conducted an open observational study of the use of aliskiren in resistant hypertensive patients. Forty-three patients with resistant hypertension were included in the study.

Discotic ionic liquid crystals of triphenylene as dispersants for orienting single-walled carbon nanotubes.

Orient and conduct: Triphenylene-based discotic ionic liquid crystals (ILCs) with six imidazolium ion pendants can disperse pristine single-walled carbon nanotubes (SWNTs). When the ILC is columnarly assembled, doping with SWNTs results in macroscopic homeotropic columnar orientation. Combination of shear and annealing treatments gives rise to three different orientation states, which determine the anisotropy of electrical conduction.

Kinetically induced intermolecular association: unusual enthalpy changes in the nematic phase of a novel dimeric liquid-crystalline molecule.

A novel dimeric liquid-crystalline molecule in which two mesogenic groups are connected via catechol was found to have smectic-like layer ordering in the nematic phase, and unusual enthalpy changes were observed in the nematic phase on heating from the monotropic smectic C phase.