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Appendix B. Site Reports—Europe 191
RESEARCH AND DEVELOPMENT HIGHLIGHTS
Among the projects discussed in greater detail are the following:
• 50 nm plated metal structures by e-beam lithography
• stamping of 80 nm features in PMMA; also, fundamental studies of the
polymer itself; possible application, heterogeneous catalysis
• nanoporous Au membranes for filtration: 100 nm Au membrane with 200
nm pores, 660 nm period, substrate etched off
• single-ion lithography to form nanoposts
• a-Si/a-SiN superlattice on single crystal Si: MBE/UHV CVD connected
by a tunnel: recrystallize with emission in the blue
• biochemical sensor: immunological reactions taken on nanostructured
surface; application: test for antibiotics in milk
• showed streptavidin immobilized on mica (see Figure B.1)
Dr. Thomas Jung described his work on the STM manipulation of
molecules, rather than atoms, thus availing himself of preassembled building
blocks. The building blocks can be prefabricated by chemical methods to
possess specific structural, chemical, and physical properties. In addition to
preassembly, a molecular approach has the advantage of being carried out at
room temperature. The molecular building blocks considered include C 60 (as
was used to form the “abacus”), customized porphyrins, and bimolecular
systems involving planar aromatic systems and fullerenes. In particular, Dr.
Jung described work utilizing Cu-TBPP on Cu (100); experiments have
elucidated molecular adsorption, surface movement, positioning, and
stability of the assembled structures (for further information see Gimzerski
et al. n.d.).
Au
oxide
Figure B.1. Streptavidin immobilized on mica.
Team members also met with Drs. Werner Wagner and Helena Van
Swygenhoven, members of the Department on Solid State Research at Large
Facilities, associated with SINQ. In addition to providing support for
outside researchers wishing to use the Spallation Neutron Source, members
of this department also carry their own program of research in