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Rate constants have been measured for the removal of OH( u = 0), OD( v = 0), OH(u = 1) and OD(u = 1) in collisions with CO. At room temperature (298*4 K) and in 18 or 25Torr argon, the values obtained were ( / c / ~O -' ~ cm3 molecule-'s-') = 1.53k0.15, 0.55k0.1, 10*2 and 9.5*2, respectively. Our results for OH( u = 0) and OD( u = 0) agree well with those of other workers. The previously undetermined rate constants for OH( u = 1)

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We present recent developments in Raman probe of confined optical and acoustic phonons in nonpolar semiconducting nanowires, with emphasis on Si and Ge. First, a review of the theoretical spatial correlation phenomenological model widely used to explain the downshift and asymmetric broadening to lower energies observed in the Raman profile is given. Second, we discuss the influence of local inhomogeneous laser heating and its interplay with phonon confinement on Si and Ge Raman line shape. Finally, acoustic phonon confinement, its effect on thermal conductivity, and factors that lead to phonon damping are discussed in light of their broad implications on nanodevice fabrication.