Atomically Resolved and Single Molecule Imaging, Spectroscopy, Dynamics, and Chemistry.


     This material is based upon work supported by the following agencies.
 
National Science Foundation under Grant No. DMR-9417866, DMR-9707195.
U.S. Department of Energy, Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research under Grant No. DMR-FG-02-91ER14205.

A Variable-Temperature Scanning Tunneling Microscope Capable of Single-Molecule Vibrational Spectroscopy, B.C. Stipe, M.A. Rezaei, and W. Ho, Rev. Sci. Instrum.70, 137-143 (1999).

Single Molecule Dissociation by Tunneling Electrons, B.C. Stipe, M.A. Rezaei, W. Ho, S. Gao, M. Persson, and B.I. Lundqvist, Phys. Rev. Lett. 78, 4410-4413 (1997). 

O2 on Pt (111)

Inducing and Viewing the Rotational Motion of a Single Molecule, B.C. Stipe, M.A. Rezaei, and W. Ho, Science 279 , 1907-1909 (1998). 


 
 

Single Molecule Vibrational Spectroscopy and Microscopy, B.C. Stipe, M.A. Rezaei, and W. Ho, Science 280, 1732-1735 (1998). 

Coupling of Vibrational Excitation to the Rotational Motion of a Single Adsorbed Molecule, B.C. Stipe, M.A. Rezaei, and W. Ho, Phys. Rev. Lett. 81, 1263-1266 (1998). 

Localization of Inelastic Tunneling and the Determination of Atomic-Scale Structure with Chemical Sensitivity, B.C. Stipe, M.A. Rezaei, and W. Ho, Phys. Rev. Lett. 82, 1724-1727 (1999). 

Site Specific Displacement of Si Adatoms on Si(111)-(7x7), B.C. Stipe, M.A. Rezaei, and W. Ho, Phys. Rev. Lett. 79, 4397-4400 (1997). 

Inducing and Imaging Single Molecule Dissociation on a Semiconductor Surface: H2S and D2S on Si(111)-7x7, M.A. Rezaei, B.C. Stipe, and W. Ho, J. Chem. Phys. 109 , 6075-6078 (1998). Atomically Resolved Determination of the Adsorption Sites as a Function of Temperature and Coverage: H 2S on Si(111)-7x7, M.A. Rezaei, B.C. Stipe, and W. Ho, J. Phys. Chem. 102 , 10941-10947 (1998). Imaging the Atomically Resolved Dissociation of D2 S on Si(100) from 80 to 300 K, M.A. Rezaei, B.C. Stipe, and W. Ho, J. Chem. Phys. 110 , 3548-3552 (1999). 

Atomically Resolved Adsorption and Scanning Tunneling Microscope Induced Desorption on a Semiconductor: NO on Si(111)-7x7, M.A. Rezaei, B.C. Stipe, and W. Ho, J. Chem. Phys. 110, 4891-4896 (1999). 

Vibrational Analysis of Single Molecule Chemistry: Ethylene Dehydrogenation on Ni(110), J. Gaudioso, H.J. Lee, and W. Ho, J. Am. Chem. Soc. 121 , 8479-8485 (1999). 

Single-molecule Vibrational Spectroscopy and Microscopy: CO on Cu(001) and Cu(110), L.J. Lauhon and W. Ho, Phys. Rev. B 60 , R8525-R8528 (1999). 

Single-molecule Thermal Rotation and Diffusion: Acetylene on Cu(001), L.J. Lauhon and W. Ho, J. Chem. Phys. 111 , 5633-5636 (1999). 

Single Bond Formation and Characterization with a Scanning Tunneling Microscope, H.J. Lee and W. Ho, Science 286, 1719-1722 (1999). 

Control and Characterization of a Multistep Unimolecular Reaction, L.J. Lauhon and W. Ho, Phys. Rev. Lett. 84 , 1527-1530 (2000). 

Single Molecule Chemistry and Vibrational Spectroscopy: Pyridine and Benzene on Cu(001), L.J. Lauhon and W. Ho, J. Phys. Chem. A 104 , 2463-2467 (2000). 

Electronic and Vibrational Excitation of Single Molecules with a Scanning Tunneling Microscope, L.J. Lauhon and W. Ho, Surf. Sci. 451 , 219-225 (2000). 

Structural Determination by Single-Molecule Vibrational Spectroscopy and Microscopy: Contrast Between Copper and Iron Carbonyls, H.J. Lee and W. Ho, Phys. Rev. B 61, R16347-R16350 (2000). 

Electronic Resonance and Symmetry in Single-Molecule Inelastic Electron Tunneling, J.R. Hahn, H.J. Lee, and W. Ho, Phys. Rev. Lett. 85, 1914-1917 (2000). 

Vibrationally Mediated Negative Differential Resistance in a Single Molecule, J. Gaudioso, L.J. Lauhon, and W. Ho, Phys. Rev. Lett. 85, 1918-1921 (2000).

Single Molecule Vibrational Spectroscopy and Microscopy: Cu(II) Etioporphyrin-I on Cu(001), T.M. Wallis, X. Chen, and W. Ho, J. Chem. Phys. 113 , 4837-4839 (2000).

Direct Observation of the Quantum Tunneling of Single Hydrogen Atoms with a Scanning Tunneling Microscope, L.J. Lauhon and W. Ho, Phys. Rev. Lett. 85, 4566-4569 (2000).

Effects of temperature and other experimental variables on single molecule vibrational spectroscopy with the scanning tunneling microscope, L.J. Lauhon and W. Ho, Rev. Sci. Instrum., 72, 216-223 (2000). 

Spectroscopy of Materials at the Spatial Limit, W. Ho, in Proceedings of the Science Frontier Tsukuba 1999 Conference, (2000), p.321-329. 

The Initiation and Characterization of Single Bimolecular Reactions with a STM, L.J. Lauhon and W. Ho, Faraday Discussion 117 , 249-255 (2000). 

Inducing and Observing the Abstraction of a Single Hydrogen Atom in Bimolecular Reaction with a Scanning Tunneling Microscope,
L.J. Lauhon and W. Ho, J. Phys. Chem., 105 , 3987-3992 (2000). 

Symmetry Selection Rules for Vibrationally Inelastic Tunneling, N. Lorente, M. Persson, L.J. Lauhon and W. Ho, Phys. Rev. Lett. 86 , 2593-2596 (2001).

Oxidation of a Single Carbon Monoxide Molecule Manipulated and Induced with a Scanning Tunneling Microscope, J.R. Hahn and W. Ho, Phys. Rev.Lett. 87, 166102 (2001).

Single Molecule Imaging and Vibrational Spectroscopy with a Chemically Modified Tip of a Scanning Tunneling Microscope, J.R. Hahn and W. Ho, Phys. Rev. Lett. 87, 196102 (2001).

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Single-Molecule Vibrations,  Conformational Changes,  and Electronic Conductivity of  Five-Membered Heterocycles, J. Gaudioso and W. Ho, J. Am. Chem. Soc. 123, 10095-10098 (2001).

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Steric Turnoff of Vibrationally Mediated Negative Differential Resistance in a Single Molecule, J. Gaudioso and W. Ho, Angew. Chem. Int. Ed. 40, 1080-4082 (2001)

Development of One-Dimensional Band Structure in Artificial Gold Chains , N. Nilius, T. M. Wallis, and W. Ho, Science 297 , 1853-1856 (2002).

Electronic Density Oscillations in Gold Atomic Chains Assembled Atom by Atom, T. M. Wallis, N. Nilius, and W. Ho, Phys. Rev. Lett. 89 , 236802 (2002).

Manipulation and Characterization of Xenon-Metalloporphyrin Complexation with a Scanning Tunneling Microscope, Xiaohui Qiu, Gueorgui V. Nazin, Arthur Hotzel, and Wilson Ho, J. Am. Chem. Soc., 124 (49), 14804 -14809 (2002).
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Vibrational Spectroscopy and Imaging of Single Molecules: Bonding of CO to Single Paladium Atoms on NiAl(110), N. Nilius, T. M. Wallis, and W. Ho, J.  Chem. Phys., 117, 10947-10952 (2002).
 

Vibrationally Resolved Fluorescence Excited with Submolecular Precision , X.H. Qiu, G.V. Nazin, and W. Ho, Science, 299 , 542-546 (2003).

Influence of A Heterogenous Al2O3 Surface on the Electronic Properties of Single Pd Atoms, N. Nilius, T. M. Wallis, and W. Ho, Phys. Rev. Lett., 90, 046808 (2003).

Localized Molecular Constraint on Electron Delocalization in a Metallic Chain, N. Nilius, T.M. Wallis, and W. Ho, Phys. Rev. Lett. 90 , 186102 (2003).

Atomic Engineering of Photon Emission with a Scanning Tunneling Microscope, G.V. Nazin, X.H. Qiu, and W. Ho, Phys. Rev. Lett. 90 , 216110 (2003).

Single Molecule Vibrational and Electronic Analyses of the Formation of Inorganic Complexes: CO Bonding to Au and Ag Atoms on NiAl (110), T. M. Wallis, N. Nilius, and W. Ho, J. Chem. Phys. 119, 2296-2300 (2003).
 





Visualization and Spectroscepy of a Metal-Molecule-Metal Bridge, G. V. Nazin, X. H. Qiu, and W. Ho, Science 302, 77-81 (2003). Published online 4 September 2003; 10. 1126/Science. 1088971.



Influence of adsorbate-substrate interaction on the local electronic structure of C60 studied by low-temperature STM, C. Silien, N. A. Pradhan, W. Ho, and P. A. Thiry, Phys. Rev. B  69, 115434 (2004).



Vibronic States in Single Molecule Electron Transport, X. H. Qiu, G. V. Nazin, and W. Ho, Phys. Rev. Lett. 92, 206102 (2004).





Vibronic states in single molecules: C60 and C70 on ultrathin Al2O3 films, N. Liu, N. A. Pradhan, and W. Ho, J. Chem. Phys. 120 , 11371 (2004).



223. Building Alloys from Single Atoms: Au-Pd Chains on NiAl(110),, with N. Nilius and T.M. Wallis, and W. Ho,  J. Phys. Chem. B 108, 14616-14619 (2004)




 224. Mechanisms of Reversible Conformational Transitions in a Single Molecule,  X.H. Qiu and G.V. Nazin and W. Ho,  Phys. Rev. Lett. 93, 196806 (2004)





225. Control of Relative Tunneling Rates in Single Molecule Bipolar Electron Transport, S. W. Wu, G. V. Nazin, X. Chen, X. H. Qiu. and W. Ho, Phys. Rev. Lett. 93, 236802 (2004)




 226. Tuning the Bipolar Conductance of an Alkali-Doped C60 Layer Sandwiched between Two Tunneling Barriers, N. A. Pradhan, N. Liu, C. Silien, and W. Ho, Nano Lett. 5, 55 (2005)




227. Electronic Properties of Artificial Au Chains with Individual Pd Impurities, T. M. Wallis, N. Nilius, and G. Mikaelian, and W. Ho,  J. Chem. Phys. 122, 011101 (2005)




228. Tailoring Electronic Properties of Atomic Chains Assembled by STM, N. Nilius and T. M. Wallis and W. Ho, Appl. Phys. A 80, 951-956 (2005)




229. Atomic Scale Conductance Induced by Single Impurity Charging, N. A. Pradhan, N. Liu, C. Silien, and  W. Ho, Phys. Rev. Lett. 94, 076801 (2005)

230. Vibronic Transitions in Single Metalloporphyrins, H. J. Lee and J. H. Lee, and W. Ho, ChemPhysChem 6, 971-975 (2005)

231. Vibrational Spectroscopy of Individual Doping Centers in a Monolayer Organic Crystal, G. V. Nazin and X. H. Qiu, and W. Ho,  J. Chem. Phys. Comm. 122, 181105-1-4 (2005)


232. Tunneling Rates in Electron Transport Through Double-Barrier Molecular Junctions in a Scanning Tunneling Microscope, G.V. Nazin, S.W. Wu, and W. Ho, Proc. Nat. Acad. Sci. 102, 8832 (2005)

233. Orbital Specific Chemistry: Controlling the Pathway in Single-Molecule Dissociation,, J.R. Hahn and W. Ho. J. Chem. Phys. 122, 244704-1-3 (2005)




234. Vibronic Spectroscopy of Single C60 Molecules and Monolayers with the STM,  N.A. Pradhan, N. Liu, and W. Ho. J. Phys. Chem. 109, 8513-8518 (2005)


235. Charging and Interaction of Individual Impurities in a Monolayer Organic Crystal, G. V. Nazin, X. H. Qiu, and W. Ho, Phys. Rev. Lett. 95, 166103 (2005).  




236. Realization of a Particle-in-a-Box: Electron in an Atomic Pd Chain, N. Nilius, T.M. Wallis, and W. Ho, J. Phys. Chem. 109, 20657-20660 (2005)

237. Spectroscopy and Microscopy of Spin-Sensitive Rectification Current Induced by Microwave Radiation, J. Lee, X. Tu, and W. Ho, Nano Letter 5, 2613-2617 (2005)

 

238. Chemisorption and Dissociation of Single Oxygen Molecules on Ag(110), J. R. Hahn. and W. Ho, J. Chem. Phys. 123, 214702-1-6 (2005)

239. Atomic-scale rectification at microwave frequency, X. Tu, J. Lee, and W. Ho, J. Chem. Phys. 124, 021105 (2006)

240. Atomic Scale Control of Single Molecule Charging, G. Mikaelian, N. Ogawa, X. Tu, and W. Ho, J. Chem. Phys. 124, 1131101-4 (2006)

 

241. Atomic Scale Coupling of Photons to Single-Molecule Junctions, S.W. Wu, N. Ogawa and W. Ho, Science, Published online 20 April 2006; 10.1126/science.1124881, 312, 1362-1365 (2006)

242. Imaging and vibrational spectroscopy of single pyridine molecules on Ag(110) using a low-temperature, J. R. Hahn and W. Ho, Chem. Phys. 124, 204708 (2006).

243. “Spatial Variations in Submolecular Vibronic Spectroscopy on a Thin Insulating Film”, N. Ogawa, G. Mikaelian and W. Ho, Phys. Rev. Lett. 98, 166103 (2007).

244.  “Chemical Imaging of Single 4,7,12,15-tetrakis[2.2]paracyclophane by Spatially Resolved Vibrational Spectroscopy”, N. Liu, C. Silien, J.B. Maddox, S. Mukamel, B. Liu, G.C. Bazan and W. Ho, J. Chem. Phys. 127, 244711-1-5, (2007).

245.  “Reversible Switching among Three Adsorbate Configurations in a Single [2.2]Paracyclophane-Based Molecule”, C. Silien, N. Liu, J.B. Maddox, S. Mukamel, B. Liu, G.C. Bazan and W. Ho, Nano Lett. 8, 208-213 (2008).

246.  “Controlling Single-Molecule Negative Differential Resistance in a Double-Barrier Tunnel Junction”, X.W. Tu, G. Mikaelian and W.Ho, Phys. Rev. Lett. 100, 126807-1-4 (2008).

247.   “Conductance Hysteresis and Switching in a Single-Molecule Junction”, with S.W. Wu, N. Ogawa, G.V. Nazin and W. Ho, J. Phys. Chem. C 112, 5241-5244 (2008).

248.   “Intramolecular Photon Emission From a Single Molecule in a Scanning Tunneling Microscope”, S.W. Wu, G.V. Nazin and W. Ho, Phys. Rev. B 77, 205430-1-5 (2008).

249.   “Visualization of Fermi's Golden Rule Through Imaging of Light Emission from Atomic Silver Chains”, Chi Chen, C. A. Bobisch and W. Ho, Science 325, 981 - 985 (2009).

Last updated: 08/03/2010