We report the design, fabrication and characterization of compact gradual bends for channel plasmon polaritons (CPPs) being excited at telecom wavelengths. We obtain high-quality near-field optical images of CPP modes propagating along a bent V-groove in gold, which indicate good CPP mode confinement in the groove and efficient guiding around the compact S-bend connecting two 5-mum-offset groov...

Waveguide bends pose a problem for high-voltage uh.ra-wideband (UWB) systems or for any tr.ansmission-line system with low-loss/fast-risetime requirements, since only a straight section of conventional transmission line can support the pure TEM mode necessary to preserve the risetime of a transmitted pulse. Here we consider alternative concepts for compensation of waveguide bends. One concept, ...

JCO/FEBRUARY 2010 © 2010 JCO, Inc. T venerable Hawley retainer has been basically unaltered in form and application since its introduction to the specialty nearly 100 years ago.1 To add to its utility, we suggest a modification of the retentive clasping mechanism. Although we prefer to use ball clasps rather than Adams clasps because of their sturdiness and simplicity, they are shorter and thus...

The DNA mismatch repair (MMR) pathway removes errors that appear during genome replication. MutS is the primary mismatch sensor and forms an asymmetric dimer that encircles DNA to bend it to scan for mismatches. The mechanism utilized to load DNA into the central tunnel was unknown and the origin of the force required to bend DNA was unclear. We show that, in absence of DNA, MutS forms a symmet...

These notes supplement our paper Interfacial and morphological features of a twist-bend nematic drop, producing a number of analytical details of the mathematical model employed there to interpret the experimental observations of equilibrium shapes of a twist-bend nematic drop in two space dimensions. For the sake of continuity and completeness, some figures and equations are also reproduced here.

the mechanism of flow and sediment transport in channel bend is much complex. because of secondary current, the sediment moves away from outer bank toward inner bank and therefore outer bank of the bend is one of best positions for lateral diversion. in this paper, the mechanism of sediment transport was simulated with ssiim software in the u shape channel with lateral intake. in order to verif...