Research Areas

Particle Technology; Characterization of Fractal Aggregates; Measurement of Surface Roughness and Fractal Dimension of Dry Powder Pharmaceutical Aerosols; Fly Ash Characterization and Utilization; Waste Minimization

Recent Publications

1. Alamdari, A.,J.A. Raper and M.S. Wainwright, "A Model for Aluminium Trihydroxide Crystallization from Pure and Impure Solutions", Chem. Eng. Comm., Vol. 180, pp83-105 (2000)

2. Bushell,G.C., Yan, Y.D., Woodfield, D., Raper, J.A. & Amal, R., "On Techniques for the Measurement of the Mass Fractal Dimension of Aggregates", Advances in Colloid and Interface Science., 95 (2000) 1-50.

3. Nobbs,D., Tang, P. & Raper, J.A., "The design, construction and commissioning of a low-cost optical particle size analyser specially for measurement of settling velocities and size of flocs". Meas. Sci. Technol., 13 (2002) pp1-6

4. Tang,P, Greenwood, J & Raper, J.A., "A Model to Describe the Settling Behaviour of Fractal Aggregates", J. Coll. & Interf. Sci., Vol 247, No 1, March, (2002) pp210 - 219

5. P.Tang and J.A. Raper, "Modelling the Settling Behaviour of Fractal Aggregates; A Review", Powder Tech123 (2002) pp.114-125

6. Jung,S.J., Amal, R., Raper, J.A. & Jo, Y.M., "New Methodology for the Analysis of Physical Structure of Solid Aggregates", J. Chem. Eng. Japan, Vol. 35, No. 4 (2002) pp346-353

7. Tang,P., Chew, N.Y.K., Chan, H-K & Raper, J.A., "Limitation of Determination of Surface Fractal Dimension using N2 Adsorption Isotherms and Modified Frenkel-Halsey-Hill Theory", Langmuir, 2003, 19, 2632-2638

8. Tang,P., Chan, H.K & Raper,J.A., "Fractal Geometry in Pharmaceutical and Biological Applications", Encyclopediaof Pharmaceutical Technology, 2004

9. Coates, M.S., Fletcher, D.F., Chan H-K., & Raper, J.A., "Effect of the Performance of a Dry Powder Inhaler using Computational Fluid Mechanics. Part 1: Grid Structure and Mouthpiece Length" J Pharm Sci, Vol 93, NO. 11, November 2004, pp 2863-2876

10. Chew, Nora Y.K., Tang, P., Chan H-K., Raper, J.A. "How Much Particle Surface Corrugation is Sufficient to Improve Aerosol Performance of Powders?", Pharm. Res. (2004).

11. Coates, M.S., Fletcher, D.F., Chan, H-K and Raper, J.A., "The Role of Capsule on the Performance of a Dry Powder Inhaler using Computational and Experimental Analyses", Pharm Res 745 (2004)

12. Tang, P., Chan, H-K, Raper, J.A., "Computation of Drag Coefficient to Predict Aerodynamic Diameter of Particles with Rough Surface", Powder Tech., accepted on Sept 22, 2004