Dr Peter Gorry - research


Research interests

My research interests lie in the areas of data acquisition and process control in non-thermal atmospheric plasmas, mathematical modelling of antibiotic kinetics, and etching reactions in III-V semiconductors studied in molecular beams


Real time control of non-thermal atmospheric Plasmas. This work is carried out in conjuction with Professor Christopher Whitehead at Manchester and is part of an ongoing program into chemical processes and environmental applications of non-thermal atmospheric plasmas. In particular we are investigating the use of real-time control of plasma conditions using adaptive PID control technologies under Labview control. This work has been used to provide a fiull characterisation of the NO-plamsa control surface for plasma destruction of atmospheric NOx . We have also extended the control strategies to adaptive Kalman filtering with cascaded fuzzy logic control to provide a framework for multiparameter control.



Mathematical modeling of Erythromycin degradation kinteics. This work is carried out in conjuction with Professor Gareth Morris in Chemistry and Dr Jill Barber at Manchester. It is part of an extensive program to investigate the degradation mechanism and kinetics in a range of pediatric antibiotics. In particular we have examined Erythromycin A and B and their ethyl succinate esters. We have successfully determined the correct degradation mechanism for these important antibiotics under a range of acidic pH corresponding to conditions met in vivo. The work has also determined a number of rate constants using global fitting to multiple datasets within mathematica.


Molecular beam scattering studies of halogen etching in GaAs. รข?In these experiments short gas pulses (35 s) are scattered from a III-V surface and we probe inelastic collisions, molecular trapping + desorption and thermal etching reactions by measuring the translational (kinetic energy) and angular distributions of molecules scattering using a mass spectrometer detection system. We have studied a range of etchants: Cl2, Br2, HBr, and HCl on GaAs(100). In this way a detailed understanding of the reaction dynamics can be gained providing powerful insights into the processes involved.



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