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Search Publications by: Edwin J. Heilweil (Assoc)

Displaying 176 - 200 of 261

Pulsed Terahertz Spectroscopy of DNA, Bovine Serum Albumin and Collagen Between 0.1 and 2.0 THz

March 1, 2000

Author(s)

A G. Markelz, A. E. Roitberg, Edwin J. Heilweil

We report the first use of pulsed terahertz spectroscopy to examine low frequency collective vibrational modes of biomolecules. Several absorption features were observed for pressed pellets of calf thymus DNA, bovine serum albumin and collagen in the 0.06

Electron Injection, Recombination and Halide Oxidation Dynamics at Dye-sensitized Metal Oxide Interfaces

January 1, 2000

Author(s)

T A. Heimer, Edwin J. Heilweil, C A. Bignozzi, G J. Meyer

Growth Inhibition and Transient Temperature Measurement of Laser-Irradiated Hair Fibers and Follicles

January 1, 2000

Author(s)

L K. Iwaki, T Heimer, Edwin J. Heilweil, P A. Manos

Temperature changes, infrared (IR) images, and heat propagation kinetics of laser irradiated hair fibers and live follicles were measured using a cooled InSb focal plane array detector. Pulsed irradiation of different colored hair follicles under

Ultrafast Glimpses at Water and Ice

March 1, 1999

Author(s)

Edwin J. Heilweil

Recent literature reports of transient infrared hole-burning and spectroscopic measurements on water and ice are critically reviewed. Dynamical measurements on the femtosecond and picosecond timescales show anomalous vibrational relaxation temperature

Infrared Spectral Hole Burning of 1:1 Hydrogen-Bonded Complexes in Solution

January 1, 1999

Author(s)

S M. Arrivo, V D. Kleiman, W T. Grubbs, T P. Dougherty, Edwin J. Heilweil

Terahertz Spectral Measurements of DNA Oligomers

January 1, 1999

Author(s)

Alan L. Migdall, Edwin J. Heilweil

Ultrafast Microdynamics of Water and Ice

January 1, 1999

Author(s)

Edwin J. Heilweil

Ultrafast Ring Closure Energetics and Dynamics of Cyclopentadienyl Manganese Tricarbonyl Derivatives

January 1, 1999

Author(s)

T Jiao, Zhiyu Pang, T J. Berkey, R F. Johnston, T A. Heimer, V D. Keiman, Edwin J. Heilweil

Control of Condensed Phase Molecular Excitation With Intense Infrared and Visible Chipped Pulses

October 21, 1998

Author(s)

V D. Kleiman, Edwin J. Heilweil, D McMorrow, Joseph S. Melinger

Chirped ultrafast laser pulses in the mid-Infrared and visible are used to experimentally control population transfer in condensed-phase systems and molecules.

Energetics and Ultrafast Ring Closure Dynamics of Cyclopentadienyl Manganese Tricarboyl Derivatives

September 1, 1998

Author(s)

T Jiao, Zhiyu Pang, Theodore J. Burkey, R F. Johnston, T Heimer, V D. Kleiman, Edwin J. Heilweil

Ring closures following flash photolysis in alkane solvents has been detected for several complexes in the series η 5-C 5H 4R)Mn(CO) 3 where R = COCH 3 (1), COCH 2SCH 3 (2), CO(CH 2) 2SCH 3 (3), COCH 2OCH 3 (4), (CH 2) 2CO 2CH 3 (5), and CH 2CO 2CH 3 (6)

Temperature Dependent Terahertz Output from Semi-Insulating GaAs Photoconductive Switches

May 1, 1998

Author(s)

A G. Markelz, Edwin J. Heilweil

The temperature dependence of the terahertz (THz) output power and spectra from biased photoconductive switches was measured for several antenna gap widths and applied biases. The spectrally integrated THz output had a nonmonotonic temperature dependence

Control of Condensed-phase Molecular Excitation with Intense Infrared and Visible Chirped Pulses

January 1, 1998

Author(s)

V D. Kleiman, Edwin J. Heilweil, D Mcmorrow, J S. Melinger

Controlling Condensed-phase Vibrational Excitation with Tailored Infrared Pulses, Special issue on 'Coherence in Chemical Dynamics,'

January 1, 1998

Author(s)

V D. Kleiman, S M. Arrivo, J S. Melinger, Edwin J. Heilweil