Nanoscience

Elena RozhkovaApril 5, 2013

Nanoscientist

Manipulative Scanning Tunneling Microscopy and Single Molecule Spintronics
Abstract:
Scanning tunneling microscopy (STM), a real-space local probe of nanoscale topology and electromagnetic properties, is applied to further our understanding of surfaces and surface supported atomic and molecular systems. In addition, STM manipulation techniques are implemented for bond dissociations, lateral manipulations, and surface augmentations. Diverse applications of STM techniques will be presented, with the primary focus of characterizing surface supported spintronic molecular systems.
Exerting Mechanical Force on Single Protein Molecules
Abstract:
Using AFM force spectroscopy one can measure physiologically relevant pN forces between an AFM tip and a biomolecule with a mean displacement resolution ofabout 0.1 nm. The last 15 years have witnessed an explosion of interest in single molecule force spectroscopy fueled by:
Atomic and Molecular Nanocontacts: Structure, Magnetism, and Kondo Anomalies from First Principles
Abstract:
The nature and properties of atomic and molecular metallic nanocontacts, of break junctions, and of tip-surface tunnel contacts are difficult to access geometrically. Yet, they are rich of phenomena in connection with structure, electron transport, and magnetism. Structurally, the formation of magic nanowires in gold [1] is a remarkable phenomenon, explained by minima of the string tension. [2] Electronically, first principles calculations account well for the ballistic conductance of metal nanocontacts, both in nonmagnetic and in magnetic metals. [3,4]