Direct and accurate measurement of etch rate of polymer films under far-UV irradiation

Lazare, Sylvain; Soulignac, Jean Claude; Fragnaud, Pascal
March 1987
Applied Physics Letters;3/9/1987, Vol. 50 Issue 10, p624
Academic Journal
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 has good accuracy and thus provides precise evidence of a new feature of the etch curve for laser intensity right above the ablation threshold value. Further applications are proposed.


Related Articles

  • Laser-initiated microchemistry: Dynamic probes of metallopolymer thin-film decomposition. Fisanick, G. J.; Hopkins, J. B.; Gross, M. E.; Fennell, M. D.; Schnoes, K. J. // Applied Physics Letters;6/15/1985, Vol. 46 Issue 12, p1184 

    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...

  • Biodegradation of Agricultural Plastic Films: A Critical Review. Kyrikou, Ioanna; Briassoulis, Demetres // Journal of Polymers & the Environment;Apr2007, Vol. 15 Issue 2, p125 

    The growing use of plastics in agriculture has enabled farmers to increase their crop production. One major drawback of most polymers used in agriculture is the problem with their disposal, following their useful life-time. Non-degradable polymers, being resistive to degradation (depending on...

  • Ultraviolet stabilizers. Menezes, Edward; Chaudhari, Mrinal // Colourage;Feb2005, Vol. 52 Issue 2, p105 

    The photodegradation of polymeric materials can be minimized using ultraviolet stabilizers. UV stabilizers dissipate the energy acquired from these ultraviolet radiations in the harmless manner. The most common types of UV stabilizers are benzophenones and phenylbenzotriazoles. These molecules...

  • Projection printing of gold micropatterns by photochemical decomposition. Baum, Thomas H.; Marinero, Ernesto E.; Jones, Carol R. // Applied Physics Letters;11/3/1986, Vol. 49 Issue 18, p1213 

    Gold micropatterns have been generated by the laser photolysis of dimethylgold (III) acetylacetonate, Me2Au(acac), in the vapor phase. Linewidths as fine as 2 μm were readily obtained utilizing a simple optical projection system comprised of a 4× projection lens, a lithographic photomask,...

  • Photolytic decomposition of adsorbed tellurium and cadmium alkyl species at 295 K upon 193 nm photon irradiation. Stinespring, C. D.; Freedman, A. // Applied Physics Letters;6/6/1988, Vol. 52 Issue 23, p1959 

    The photolytic decomposition of adspecies formed by the adsorption of tellurium and cadmium alkyls at 295 K under ultrahigh-vacuum conditions has been studied using x-ray photoelectron spectroscopy. Dimethyl tellurium adsorbed at submonolayer coverages on a polycrystalline gold substrate has...

  • Laser-assisted deposition of iron on Si(111)-(7×7): The mechanism and energetics of Fe(CO)5 decomposition. Swanson, Jon R.; Friend, C. M.; Chabal, Y. J. // Journal of Chemical Physics;10/15/1987, Vol. 87 Issue 8, p5028 

    The adsorption and decomposition of Fe(CO)5 on the Si(111)-(7×7) surface has been investigated using multiple internal reflection Fourier transform-infrared, Auger electron, and temperature programmed desorption spectroscopies and low energy electron diffraction under ultrahigh vacuum...

  • Deuterium isotope effects on photodecomposition of alkylbenzenes. Kajii, Yoshizumi; Obi, Kinichi; Tanaka, Ikuzo; Ikeda, Noriaki; Nakashima, Nobuaki; Yoshihara, Keitaro // Journal of Chemical Physics;6/1/1987, Vol. 86 Issue 11, p6115 

    Photodissociation of 11 alkylbenzenes (toluene, ethylbenzene, butylbenzene, and their deuterated compounds) have been studied by the ArF (193 nm) laser photolysis. Formation rate constants of benzyl radical were measured under collision free conditions. The major relaxation process of the...

  • Guest Editorial: Thermo-Structural Response of Composites Exposed to Fire. Lattimer, Brian Y.; Mouritz, Adrian P. // Fire Technology;Oct2011, Vol. 47 Issue 4, p821 

    An introduction is presented in which the editor discusses various reports within the issue on topics including the fiber reinforced polymer (FRP) composite materials thermo-structural behavior measurement and modeling, experiments on its response during fire, and its decomposition properties.

  • Slow spinodal decomposition in binary liquid mixtures of polymers. III. Scaling analyses of later-stage unmixing. Izumitani, Tatsuo; Takenaka, Mikihito; Hashimoto, Takeji // Journal of Chemical Physics;3/1/1990, Vol. 92 Issue 5, p3213 

    Later-stage unmixing process of a near critical mixture of polybutadiene (PB)/poly(styrene- r-butadiene)(SBR) were examined at real time t and in situ at several temperatures T by time-resolved light scattering method. The magnitude of scattering vector qm(t,T) at which the intensity becomes...


Read the Article


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

Try another library?
Sign out of this library

Other Topics