Publications

Displaying 76 - 100 of 231

Intramolecular energy transfer between oriented chromophores: High resolution infrared spectroscopy of HCl trimer

January 1, 2004

Author(s)

M Farnik, David Nesbitt

Structural issues in conjugated hydrocarbons: High-resolution infrared slit-jet spectroscopy of trans-1,3-butadiene

January 1, 2004

Author(s)

M Halonen, L Halonen, David Nesbitt

Extinction Near-Field Optical Microscopy

November 1, 2003

Author(s)

H F. Hamann, M Larbadi, S Barzen, T Brown, Alan Gallagher, David Nesbitt

Two AFM-assisted, apertureless, optical-imaging methods are presented. These overcome the severe resolution consrtaints of aperture-based Near-field Scanning Optical Microscopy by probing the highly localized mutual near-field interaction between AFM-tip

Probing Hydrogen Bond Potential Surfaces for Out-of-Plane Geometries: Near-infared Combination Band Torsional (N 6 ) Spectroscopy in (HCI) 2

June 1, 2003

Author(s)

M Farnik, S Davis, David Nesbitt

High resolution near IR spectra of jet cooled (HCL) 2 are obtained in the 3000 cm -1 to 2070 cm -1 combination band region corresponding to simultaneous excitation of intermolecular out-of-plane torsion (Ņ 6) with intramolecular HCl stretching (Ņ 1Ņ 2)

Modeling Distributed Kinetics in Isolated Semiconductor Quantum Dots

March 1, 2003

Author(s)

M Kuno, D P. Fromm, S T. Johnson, Alan Gallagher, David Nesbitt

tailed modeling of recently observed nonexponential fluorescence intermittency in colloidal semiconductor quantum dots (QDs) is presented. In particular, experiments have shown that both on-time and off-time probability densities generated from single-QD

Enhancement and quenching of the fluorescence of single CdSe/ZnS quantum dots studied by confocal apertureless near-field scanning optical microscope, ed. by A. Duparre and B. Singh

January 1, 2003

Author(s)

V V. Protasenko, A Gallagher, M Labardi, David Nesbitt

Extinction near-field optical microscopy

January 1, 2003

Author(s)

H F. Hamann, M Larbardi, S Barzen, T Brown, A Gallagher, David Nesbitt

Modeling distributed kinetics in isolated semiconductor quantum dots

January 1, 2003

Author(s)

Kuno m, D P. Fromm, S T. Johnson, A Gallagher, David Nesbitt

Probing hydrogen bond potential surfaces for out-of-plane geometries: Near-infrared combination band torsional (n 6 ) spectroscopy in (HCl) 2

January 1, 2003

Author(s)

M Farnik, S Davis, David Nesbitt

Vibrationally mediated dissociation dynamics of H 2 O in the v OH = 2 polyad

January 1, 2003

Author(s)

S A. Nizkorodov, M Ziemkiewicz, T L. Myers, David Nesbitt

Fluorescence Enhancement in Non-Contact and Dynamic-Force Apertureless Near-Field Scanning Optical Microscopy

November 1, 2002

Author(s)

V V. Protasenko, Alan Gallagher, David Nesbitt

The fluorescence of single ZnS overcoated CdSe Quantum dots (QDS) and dye doped polystyrene spheres (PSs) embedded in the evanescent optical field has been studied using an apertureless near-field scanning optical microscope (ANSOM) operating in non

Fluorescence of Single ZnS Overcoated CdSe Quantum Dots Studied by Apertureless Near-Field Scanning Optical Microscopy

September 1, 2002

Author(s)

V V. Protasenko, M Kuno, Alan Gallagher, David Nesbitt

The fluorescence of single ZnS overcoated CdSe quantum dots (Qds) embedded in the evanescent optical field above a prism surface has been studied using an Apertureless Near-field Scanning Optical Microscope (ANSOM). Optical and topographic ANSOM images

Observation and Analysis of the Infrared Spectra of O 2 -HF near 3950 cm -1 and O 2 -DF Near 2900 cm -1

July 1, 2002

Author(s)

W M. Fawzy, C M. Lovejoy, David Nesbitt, Jon T. Hougen

Spectra were recorded in the H-F stretching region for both O2-HF and O2-DF, using a laser difference-frequency spectrometer coupled to a slit-nozzle expansion. By varying the ratio of oxygen to carrier gas, beam temperatures ranging from 5 to 16 K could

Probing Potential Surfaces for Hydrogen Bonding: Near-Infrared Combination Band Spectroscopy of Van Der Waals Stretch (N 4 ) and Geared Bend (N 5 ) Vibrations in (HCl) 2

April 1, 2002

Author(s)

M Farnik, S Davis, M D. Schuder, David Nesbitt

High resolution infrared spectra of the two low frequency intermolecular modes - van der Waals stretch (Ņ 4) and geared bend (Ņ 4) and geared bend (Ņ 5) of (HCI) 2 - have been characterized in HCI-stretch excited states using a slit jet spectrometer. In a

Reactive Scattering of F + HD -> HF(upsilion},J) + D: HF(upsilion},J) Nascent Product State Distributions and Evidence for Quantum Transition State Resonances

April 1, 2002

Author(s)

W W. Harper, S A. Nizkorodov, David Nesbitt

Single collision reactive scattering dynamics of F + HD -> HF(Ņ,J) + D have been investigated exploiting high-resolution (δυnearly equal to}0.001 cm -1)infrared laser absorption for quantum state-resolved detection of nascent HF(Ņ,J) product states. State

Beyond the Born-Oppenheimer Approximation: High-Resolution Overtone Spectroscopy of H 2 D + and D 2 H +

January 1, 2002

Author(s)

M Farnik, S Davis, David Nesbitt

Transitions to overtone 2upsilion} 2 and 2upsilion} 3 and combination upsilion} 2+upsilion} 3 vibrations in jet-cooled H 2D + and D 2H + molecular ions have been measured for the first time by high-resolution IR spectroscopy. The source of these ions is a

Beyond the Born-Oppenheimer approximation: High-resolution overtone spectroscopy of H 2 D + and D 2 H +

January 1, 2002

Author(s)

S Farnik, S Davis, M A. Kostin, Oleg L. Polyansky, Jonathan Tennyson, David Nesbitt

Fluorescence enhancement in non-contact and dynamic-force apertureless near-field scanning optical microscopy

January 1, 2002

Author(s)

V V. Protasenko, A Gallagher, David Nesbitt

Fluorescence of single ZnS overcoated CdSe quantum dots studied by apertureless near-field scanning optical microscopy

January 1, 2002

Author(s)

V V. Protasenko, M Kuno, A Gallagher, David Nesbitt

Intramolecular energy flow and nonadiabaticity in vibrationally mediated chemistry: Wave packet studies of Cl+H 2 O

January 1, 2002

Author(s)

J R. Fair, D Schaefer, R Kosloff, David Nesbitt

Observation and analysis of the infrared spectra of O 2 -HF near 3950 cm -1 and O 2 -DF near 2900 cm -1

January 1, 2002

Author(s)

W M. Fawzy, C M. Lovejoy, David Nesbitt, Jon T. Hougen

Observation and Analysis of the Infrared Spectra of O 2 -HF near 3950 cm -1 and O 2 -DF near 2900 cm -1

January 1, 2002

Author(s)

W M. Fawzy, C M. Lovejoy, David Nesbitt, Jon T. Hougen

Probing potential surfaces for hydrogen bonding: Near-infrared combination band spectroscopy of van der Waals stretch (n 4 ) and geared bend (n 5 ) vibrations in (HCl) 2

January 1, 2002

Author(s)

M Farnik, S Davis, M D. Schuder, David Nesbitt

Reactive scattering of F + HD - HF(v,J) + D: HF(v,J) nascent product state distributions and evidence for quantum transition state resonances

January 1, 2002

Author(s)

W W. Harper, S A. Nizkorodov, David Nesbitt

The Role of Intramolecular Energy Fow and Nonadiabaticity in Vibrationally Mediated Chemistry: Wavepacket Studies of Cl + H 2 O

January 1, 2002

Author(s)

J R. Fair, D Schaefer, R Kosloff, David Nesbitt

Time-dependent and time-independent quantum scattering methods are used to investigate state-to-state inelastic and reactive collision dynamicsfor a three-dimensional (3D) atom + triatom model of Cl + H 2O -> Chl + OH. The results elucidate the role of (i)

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