@article{santagata_luo_lakhani_dewitt_day_norton_pearl_2008, title={Organizational structure and electronic decoupling of surface bound chiral domains and biomolecules}, volume={8}, ISSN={["1558-1748"]}, DOI={10.1109/JSEN.2008.923187}, abstractNote={For the development of reagentless biological and chemical species detection at the single molecule level using external fields, including terahertz radiation, it is paramount to study model systems that uncover how intermolecular and molecule-surface interactions dictate monolayer ordering and electronic properties. This paper addresses two types of molecule-surface interactions and two distinct molecular systems, both of which impact our fundamental understanding of confined molecular domains and single molecule detection. We will first discuss the ordering and electronic characteristics of a chiral molecule, tartaric acid , weakly bound to an achiral metal surface, Ag(111), as studied with low temperature scanning tunneling microscopy (STM). This particular molecule-surface system contains many key elements, including hydrogen bonding interactions and stereochemical features, that would be common to other functional detection schemes. This paper will also treat the characterization of isolated, thiolated DNA molecules chemically bound to Au(111) terraces. Ambient STM and atomic force microscopy (AFM) measurements of both short and long DNA structures in both single and double strand configurations will be discussed with particular attention paid to imaging mechanisms involved. These results are particularly relevant to systems involving biomolecules anchored to inert metal surfaces, such as those used in external field-based assays.}, number={5-6}, journal={IEEE SENSORS JOURNAL}, author={Santagata, Nancy M. and Luo, Pengshun and Lakhani, Amit M. and DeWitt, Darryl J. and Day, B. Scott and Norton, Michael L. and Pearl, Thomas P.}, year={2008}, pages={758–766} }
 @inproceedings{santagata_lakhani_dewitt_luo_pearl_2008, title={Probing molecular-level organizational structure and electronic decoupling of tartaric acid domains supported on Ag(111)}, volume={100}, booktitle={Proceedings of the 17th international vacuum congress/13th international conference on surface science/international conference on nanoscience and technology}, author={Santagata, N. M. and Lakhani, A. M. and DeWitt, D. J. and Luo, P. and Pearl, T. P.}, year={2008} }
 @article{lakhani_dewitt_sant'agata_pearl_2007, title={Persistence of chirality for a weakly bound adsorbate: (R,R)- and (S,S)-tartaric acid/Ag(111)}, volume={111}, ISSN={["1932-7447"]}, DOI={10.1021/jp068639y}, abstractNote={The interaction of tartaric acid (C4H6O6), including both (R,R) and (S,S) enantiomers, with Ag(111) has been studied using low-energy electron diffraction (LEED) and low-temperature scanning tunneling microscopy (STM). As evidenced by both diffraction and microscopy, this molecule binds very weakly to the Ag lattice, and the interadsorbate forces strongly dictate the formation of ordered monolayers that are globally chiral. In addition to a discussion of the role that hydrogen bonding plays in the formation of monolayer domains, comparisons of this system to the growth of tartaric acid on other metallic surfaces will be made.}, number={15}, journal={JOURNAL OF PHYSICAL CHEMISTRY C}, author={Lakhani, A. M. and DeWitt, D. J. and Sant'Agata, N. M. and Pearl, T. P.}, year={2007}, month={Apr}, pages={5750–5755} }