www.ph.utexas.edu/humboldt-kolleg-2011/schedule.html

The combination of molecular self-assembly and electron beam lithography is very useful to build supramolecular nanostructures. Our starting points are aromatic self-assembled monolayers (SAMs) that are modified by electrons. In nitrobiphenyl-SAMs, the impinging electrons dehydrogenate and cross-link...

I will describe a method for levitating micron-sized few layer graphene flakes in a quadrupole ion trap. Starting from a liquid suspension containing graphene, charged flakes are injected into the trap using the electrospray ionization technique and are probed optically. At micro-torr pressures,...

The free-electron laser (FEL) has become an important tool for producing high-intensity photon beams, especially in the infrared. Synchrotron radiation’s primary spectral domains are in the ultraviolet and X-ray region. FEL’s are therefore excellent complimentary facilities to synchrotron...

An unexpected pronounced enhancement is observed in sputtering yields per atom for N12 compared to N1 from a polycrystalline gold target. This effect is seen when the kinetic energy per projectile atom is below 500 eV and increases as projectile energy decreases to near-threshold energies. Enhancements...

Epitaxial growth of Co on GaAs~001! and its in-plane magnetic anisotropy are studied using reflection high-energy electron diffraction, a high-resolution transmission electron microscope, and the magneto-optical Kerr effect. In the initial and final stages of growth, Co exists in single-crystalline body-centered-cubic...

Two new isomers of the C5H2 molecule have been detected in the laboratory, and their microwave spectra have been characterized to high accuracy. Both are good candidates for radio astronomical detection. Like the two isomers previously detected in the laboratory, both are closed-shell carbenes, and both...

Following a high-level coupled cluster calculation, the rotational spectrum of the bent HC4N singlet carbene was detected in a supersonic molecular beam by Fourier transform microwave spectroscopy. The three rotational constants, the leading centrifugal distortion constants, and two nitrogen hyperfine...

A linear triplet isomer of HC has been detected by Fourier transform microwave spectroscopy in a 6N supersonic molecular beam. A total of 85 hyperÐne components from six rotational transitions between 8 and 18 GHz were measured to an uncertainty of 5 kHz; a similar set of transitions were detected for...