Du Plessis, AStrydom, CAUys, HBotha, LRoberts, TDlamini, TH2010-08-312010-08-312010-08-31Du Plessis, A. 2010. Femtosecond laser control of chemical reactions. CSIR 3rd biennial conference: 2010 science real and, relevant, CSIR International Convention Center, Pretoria, South Africa, 30 August-1 September 2010, pp 11http://hdl.handle.net/10204/4231CSIR 3rd biennial conference: 2010 science real and, relevant, CSIR International Convention Center, Pretoria, South Africa, 30 August-1 September 2010.Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in controllable relative fragmentation ratios for unimolecular dissociation reactions – therefore selectively breaking bonds in a molecule. More interestingly, the same techniques can be used to provide control over chemical reactions involving two or more reactant molecules, where these come together, react and produce new reaction products. The reaction product ratios can be controlled in this way, providing a new form of selectivity in addition to the usual variation of temperature, pressure and catalysts in chemical reactions. In this work, low-pressure gas-phase laser-induced chemical reactions were studied, with the aim of controlling the reaction between CO and H2 to produce hydrocarbon products of interest to the petrochemicals industry. Preliminary experimental results are presented.enFemtosecond laser controlChemical reactionsPulse-shaping techniquesAlgorithm feedback loopLow-pressure gas-phase laserInduced chemical reactionsHydrocarbon productsCSIR Conference 2010Conference PresentationDu Plessis, A., Strydom, C., Uys, H., Botha, L., Roberts, T., & Dlamini, T. (2010). Femtosecond laser control of chemical reactions. CSIR. http://hdl.handle.net/10204/4231Du Plessis, A, CA Strydom, H Uys, L Botha, T Roberts, and TH Dlamini. "Femtosecond laser control of chemical reactions." (2010): http://hdl.handle.net/10204/4231Du Plessis A, Strydom C, Uys H, Botha L, Roberts T, Dlamini T, Femtosecond laser control of chemical reactions; CSIR; 2010. http://hdl.handle.net/10204/4231 .TY - Conference Presentation AU - Du Plessis, A AU - Strydom, CA AU - Uys, H AU - Botha, L AU - Roberts, T AU - Dlamini, TH AB - Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in controllable relative fragmentation ratios for unimolecular dissociation reactions – therefore selectively breaking bonds in a molecule. More interestingly, the same techniques can be used to provide control over chemical reactions involving two or more reactant molecules, where these come together, react and produce new reaction products. The reaction product ratios can be controlled in this way, providing a new form of selectivity in addition to the usual variation of temperature, pressure and catalysts in chemical reactions. In this work, low-pressure gas-phase laser-induced chemical reactions were studied, with the aim of controlling the reaction between CO and H2 to produce hydrocarbon products of interest to the petrochemicals industry. Preliminary experimental results are presented. DA - 2010-08-31 DB - ResearchSpace DP - CSIR KW - Femtosecond laser control KW - Chemical reactions KW - Pulse-shaping techniques KW - Algorithm feedback loop KW - Low-pressure gas-phase laser KW - Induced chemical reactions KW - Hydrocarbon products KW - CSIR Conference 2010 LK - https://researchspace.csir.co.za PY - 2010 T1 - Femtosecond laser control of chemical reactions TI - Femtosecond laser control of chemical reactions UR - http://hdl.handle.net/10204/4231 ER -