TITLE

Laser-initiated microchemistry: Dynamic probes of metallopolymer thin-film decomposition

AUTHOR(S)
Fisanick, G. J.; Hopkins, J. B.; Gross, M. E.; Fennell, M. D.; Schnoes, K. J.
PUB. DATE
June 1985
SOURCE
Applied Physics Letters;6/15/1985, Vol. 46 Issue 12, p1184
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Transient absorption has been used as a probe of the reaction kinetics in the laser-initiated thermal decomposition of Au metallopolymers. Feature sizes are considerably larger than the dimensions of the laser spot due to the propagation of a reaction front driven by the heat release from the highly exothermic reaction. Front velocities in the range of 30–50 cm/s are measured using spatially separated generating and probe lasers. These effects should be generalizable to any laser-driven thermal reaction in the condensed phase with sufficient heat release, and, as such, constitute a major limitation on feature size obtainable in these systems.
ACCESSION #
9817686

 

Related Articles

  • Direct and accurate measurement of etch rate of polymer films under far-UV irradiation. Lazare, Sylvain; Soulignac, Jean Claude; Fragnaud, Pascal // Applied Physics Letters;3/9/1987, Vol. 50 Issue 10, p624 

    We have developed a new technique for measuring the etch rate of polymer films under ablative photodecomposition condition obtained by absorption of the far-UV radiation of the excimer laser. The technique is based on the use of a quartz crystal microbalance interfaced with a microcomputer. It...

  • Experiment to Capture Gaseous Products from Shock-Decomposed Materials. Holt, W. H.; Mock, W.; Santiago, F.; Gamache, R. M. // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p1196 

    Vacuum-tight steel containers have been designed and impact tested for the purpose of capturing gaseous products from the shock decomposition of porous polymer materials. This work extends earlier gas gun experiments in which initially-porous polytetrafluoroethylene (PTFE) powder specimens were...

  • Self-assembly of a homopolymer mixture via phase separation. Krausch, Georg; Kramer, Edward J. // Applied Physics Letters;5/16/1994, Vol. 64 Issue 20, p2655 

    Proposes a mechanism for creating lateral order in thin films of a homopolymer mixture through spinodal decomposition. Observation of periodic stripe-like domain structures in polymer films; Importance of self-assembly in polymeric films in producing nonlinear optical devices; Use of...

  • Teflon and Teflon/Al (nanocrystalline) decomposition chemistry at high pressures. Parker, L. J.; Ladouceur, H. D.; Russell, T. P. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p941 

    Teflon (polytetrafluoroethylene) and Teflon/A1 mixtures were studied to develop a fundamental understanding of the decomposition reactions and combustion processes of metal/polymer composites under extreme conditions. Our goal was to determine the role of pressure and laser fluence on Teflon and...

  • Orientation fluctuation-induced spinodal decompositions in polymer/liquid crystal mixtures. Matsuyama, Akihiko; Evans, R. M. L.; Cates, M. E. // AIP Conference Proceedings;2000, Vol. 519 Issue 1, p220 

    We study early stages of spinodal decomposition (SD) in polymer/liquid crystal mixtures by solving linearized time-dependent Landau-Ginzburg equations for concentration (conserved order parameter) and orientation (nonconserved order parameter). We find a new SD process driven by instability of...

  • Shock-Induced Chemical Reaction Propagation in Nanoenergetic Materials Observed with Nanometer Spatial Resolution. Shufeng Wang; Yanqiang Yang; Zhaoyong Sun; Dlott, Dana D. // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p1065 

    Aluminum nanoparticles (30 nm to 110 nm) embedded in nitrocellulose (NC) or Teflon polymers are flash-heated by a 100 ps laser pulse, generating a spherical shock front which causes the polymers to undergo shock-induced chemical decomposition. Depending on the initial temperature, the spherical...

  • Complete decomposition of polymers by means of thermally generated holes at high temperatures in titanium dioxide and its decomposition mechanism. Shinbara, Toshihiro; Makino, Takashi; Matsumoto, Keiji; Mizuguchi, Jin // Journal of Applied Physics;8/15/2005, Vol. 98 Issue 4, p044909 

    Thermoplastic as well as thermosetting polymers are found to be completely decomposed in the presence of titanium dioxide due to thermally excited holes at high temperatures. The decomposition mechanism has therefore been investigated in terms of thermal analysis, electron-spin resonance, and...

  • Surface-directed phase separation in nanometer polymer films: self-stratification and pattern replication[supa]. Budkowski, Andrzej; Bernasik, Andrzej; Vyganik, Piotr; Rysz, Jakub; Brenn, Rüdiger // e-Polymers;Feb2002, p1 

    Focuses on surface-directed phase separation in nanometer polymer films. Techniques used in observation of self-organization processes ordering polymer phases for model polymer blends; Effect of the range as well as the strength of the surface/polymer interactions on the self-stratification...

  • Ionic polarization in bending-electrostrictive response of polyurethane films. Watanabe, Masashi; Shirai, Hirofusa; Hirai, Toshihiro // Journal of Applied Physics;12/15/2001, Vol. 90 Issue 12, p6316 

    Effects of ionic polarization on hysteresis in the bending-electrostrictive response of polyurethane films are reported. The relation between the ionic polarization and charge injection from the anode was investigated using a model system. As a result, taking into account an internal electric...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics