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Professor Bill O'Neill

Professor of Laser Engineering

Industrial Photonics, Manufacturing Engineering Tripos (MET), Research Capability Development Programme

 

Research interests

  • Flexible and reconfigurable production technologies.
  • Laser beam monitoring and control
  • Ultrafast laser matter interactions
  • Dynamics of micro and macro laser cutting
  • Rapid manufacturing technologies
  • Ultrahigh velocity particulate impacts
  • Nanoscale fabrication technologies
  • Engineering systems for synthetic biological applications
  • Micro engineered medical therapeutics

Current situation

Bill is a Professor of Laser Engineering within the Cambridge University Engineering Department and Director of the Centre of Industrial Photonics. He has written over 170 research publications and scientific papers on the subject of laser-matter interactions, optical engineering, laser based manufacturing technologies, and micro/nano fabrication techniques. He is a member of the international advisory panel of the National Laser Centre of South Africa, a Director of the Laser Institute of America, and advises industry on a number of laser based manufacturing technologies.

 

Background

Bill obtained a B.Sc in Applied Physics from the University of Essex in 1985 and an M.Sc in Laser Physics in 1986. On moving to the John Percy Group, Royal School of Mines, Imperial College, he studied the interaction phenomena of dual-wavelength laser materials processing and obtained a PhD in 1990. He then moved to the University of Liverpool where he continued his research and supported Prof W M Steen in establishing one of the world's largest university based laser research groups.

 

He was appointed Royal Society Research Fellow, 1990-4, in order to study the gas dynamics of laser cutting and examined rate-limiting affects on the iron-oxygen combustion reactions. This resulted in a number of international patents for new methods of cutting thick section steels with low power lasers, laser machining techniques and optical system design.

 

In 1995 Bill was appointed Lecturer in the Department of Industrial Studies, University of Liverpool where he continued his research and the development of teaching materials on advanced manufacturing systems and technology, in addition to establishing a research base in laser based rapid production technologies.

 

In 1998 Bill was appointed to a 5 year EPSRC Advanced Research Fellow with a view to carrying out research and development in the field of laser based micro engineering. Having completed his advanced fellowship in September 2003 and established a £5M EPSRC Innovative Manufacturing Research Centre in 2002, Bill was appointed to a lectureship in production processes within the Cambridge University Engineering Department in 2003. He established the Centre for Industrial Photonics in 2006 and continues to research and develop next generation photonics based manufacturing solutions.

 

Publications

2014

K. Li, M. Sparkes, W. O'Neill. Comparison between Single Shot Micromachining of Silicon with Nanosecond Pulse Shaped IR Fiber Laser and DPSS UV Laser. IEEE Journal of Selected Topics in Quantum Electronics, Volume: 20, Issue: 5. NO. 5, SEPTEMBER/OCTOBER 2014.

 

Pangovski, K and Sparkes, M and Cockburn, A and O'Neill, W and Teh, PS and Lin, D and Richardson, D (2014) Control of Material Transport Through Pulse Shape Manipulation-A Development Toward Designer Pulses. external link IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 20. ISSN 1077-260X

 

2013

Fairchild, S., Bulmer, J., Sparkes, M., Boeckl, J., Cahay, M., Back, T., Murray, P., Gruen, G., Lange, M., Lockwood, N., Orozco, F., O'Neill, W., Paulkner, C. and Koziol, K. (2013).  “Field emission from laser cut CNT fibers and films”, submitted to Journal of Materials Research, paper number JMR-2013-0525.

 

Li, K., Sparkes, M. and O’Neill, W. (2013).  “Improved micromachining of silicon with a pulse shapeable IR fiber laser – a direct performance comparison with the DPSS UV laser”,

submitted to the Journal of Selected Topics in Quantum Electronics, paper number JSTQE-CON-FL2014-04957-2013.

 

Fang, L and Rocco, L and Andrew, C and Martin, S and William, O and Jian-hua, Y (2013) Characteristics of Stellite 6 Deposited by Supersonic Laser Deposition Under Optimized Parameters. external link JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 20. pp. 52-57. ISSN 1006-706X

 

Cockburn, A and Lupoi, R and Sparkes, M and O'Neill, W (2013) Supersonic laser deposition of corrosion and wear resistant materials. external link Proceedings of the 37th International MATADOR 2012 Conference. pp. 387-391.

 

Habibi, S., Sparkes, M., Langford, R. M. and O'Neill, W. (2013). “Surface and substrate effects of ultraprecise fabrication with FIB on HOPG characterized by Kelvin probe force microscopy”,

submitted to the Journal of Vacuum Science and Technology A,paper number JVSTA-L-13-307.

 

2012

Zhang, J and Hu, P and Zhang, R and Wang, X and Yang, B and Cao, W and Li, Y and He, X and Wang, Z and O'Neill, W (2012) Soft-lithographic processed soluble micropatterns of reduced graphene oxide for wafer-scale thin film transistors and gas sensors. external link Journal of Materials Chemistry, 22. pp. 714-718. ISSN 0959-9428

 

Luo, F, Cockburn, A, Lupoi, R, Sparkes, M and O'Neill, W (2012) Performance comparison of Stellite 6® deposited on steel using supersonic laser deposition and laser cladding. Surface and Coatings Technology. ISSN 0257-8972

 

Earl, C., Hilton, P. and O'Neill, W. Parameter Influence on Surfi-Sculpt Processing Efficiency external link external link
Physics Procedia, Volume 39, 2012, Pages 327-335

 

Li, K. and O’Neill, W. (2012).  “Fibre laser microvia drilling and ablation of Si with tuneable pulse shapes”, International Journal of Precision Engineering and Manufacturing, 13, 641-648.

 

Lupoi, R and Cockburn, A and Bryan, C and Sparkes, M and Luo, F and O'Neill, W (2012) Hardfacing steel with nanostructured coatings of Stellite-6 by supersonic laser deposition. LIGHT-SCIENCE & APPLICATIONS, 1. ISSN 2047-7538

 

Li, K and O'Neill, W (2012) Fibre laser microvia drilling and ablation of Si with tuneable pulse shapes. International Journal of Precision Engineering and Manufacturing, 13. pp. 641-648. ISSN 1229-8557

 

O'Neill, W, Zhang, J, Hu, P, Zhang, R, Wang, X, Yang, B, Wenhu, C and Xiangdong, H (2012) Soft-lithographic processed soluble micropatterns of reduced graphene oxide for wafer-scale thin film transistors and gas sensors. Journal of Materials Chemistry, 22. pp. 714-718. ISSN 0959-9428

 

Rangesh, A and O'Neill, W (2012) The foundations of a new approach to additive manufacturing: Characteristics of free space metal deposition. Journal of Materials Processing Technology, 212. pp. 203-210. ISSN 0924-0136

 

2011

O'Neill, W and Hu, Q (2011) Focused-Ion-Beam Induced Nano Feature Self-Assembly on Glassy Carbon. Journal of Nanoscience and Nanotechnology, 11. pp. 5394-5401.

 

Lupoi, R, Sparkes, M, Cockburn, A and O'Neill, W (2011) High speed titanium coatings by supersonic laser deposition. Materials Letters, 65. pp. 3205-3207. ISSN 0167-577X

 

Xue, X, Marson, S, Patel, MK, Bailey, C, O'Neill, W, Topham, D, Kay, RW and Desmulliez, MPY (2011) Progress towards the design and numerical analysis of a 3D microchannel biochip separator. International Journal for Numerical Methods in Biomedical Engineering, 27. pp. 1771-1792. ISSN 2040-7939

 

Lupoi, R., Sparkes, M., Cockburn, A. and O'Neill, W. (2011) High speed titanium coatings by supersonic laser deposition. Materials Letters, 65. pp. 3205-3207. ISSN 0167-577X

 

Lupoi, R., Cockburn, A., Sparkes, M., Bryan, C., Luo, F. and O'Neill, W. (2011) Hardfacing using supersonic laser depostion of stellite-6. 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011. pp. 435-441

 

Lupoi, R. and O'Neill, W. (2011) Powder stream characteristics in cold spray nozzles. Surface and Coatings Technology, 206. pp. 1069-1076. ISSN 0257-8972

 

Rangesh, A. and O'Neill, W. (2011) Rapid prototyping by consolidation of stainless steel powder using an electrical arc. RAPID PROTOTYPING J, 17. pp. 280-287. ISSN 1355-2546

 

2010

Lupoi, R. and O'Neill, W. (2010) Deposition of metallic coatings on polymer surfaces using cold spray. Surface and Coatings Technology, 205. pp. 2167-2173. ISSN 0257-8972

 

Hu, P, Zhang, J, Li, L, Wang, Z, O'Neill, W and Estrela, P (2010) Carbon nanostructure-based field-effect transistors for label-free chemical/biological sensors. Sensors (Basel), 10. pp. 5133-5159.

 

Hu, P, Li, K, Chen, W, Peng, L, Chu, D and O'Neill, W (2010) Erratum: Fabrication of an organic field effect transistor using nano imprinting of Ag inks and semiconducting polymers (Journal of Micromechanics and Microengineering (2010) 20 (075032)). Journal of Micromechanics and Microengineering, 20. ISSN 0960-1317

 

Hu, Q and O'Neill, W (2010) Occurrence of particle debris field during focused Ga ion beam milling of glassy carbon. Applied Surface Science, 256. pp. 5952-5956. ISSN 0169-4332

 

Hu, P, O'Neil, W and Hu, Q (2010) Synthesis of 10 nm Ag nanoparticle polymer composite pastes for low temperature production of high conductivity films. Applied Surface Science, 257. pp. 680-685. ISSN 0169-4332

 

2009

Bray, M., Cockburn, A. and O'Neill, W. (2009) The laser-assisted cold spray process and deposit characterisation. Surface and Coatings Technology, 203. pp. 2851-2857. ISSN 0257-8972

 

O'Neill, W. and Li, K. (2009) High-quality micromachining of silicon at 1064 nm using a high-brightness MOPA-based 20-W Yb fiber laser. IEEE Journal of Selected Topics in Quantum Electronics, 15. pp. 462-470. ISSN 1077-260X

 

Sun, Z., Rozhin, A.G., Wang, F., Hasan, T., Popa, D., O'Neill, W. and Ferrari, A.C. (2009) A compact, high power, ultrafast laser mode-locked by carbon nanotubes. Applied Physics Letters, 95. 253102-. ISSN 0003-6951

 

2008

Pattison, J., Celotto, S., Khan, A.H. and O'Neill, W. (2008) Standoff distance and bow shock phenomena in the cold spray process. Surface and Coatings Technology, 202. pp. 1443-1454. ISSN 0257-8972

 

Seefeld, T. and O'Neill, W. (2008) Cutting and welding with the new high brightness lasers. The Laser User, Spring. pp. 32-37. ISSN 1755-5140

 

Cockburn, A., Bray, M. and O'Neill, W. (2008) Laser assisted cold spray. Industrial Laser Solutions, 23. ISSN 1523-4266

 

O'Neill, W (2008) Laser cutting: a technology with some surprises in store. The Laser User. ISSN 1755-5140

 

Hu, Q., Hu, P. and O'Neill, W. (2008) Laser-assisted micro structure fabrication by using nano-particles. The Laser User, 52

 

O'Neill, W (2008) MOPA-based fibre lasers offer processing options. Optics & Laser Europe. pp. 17-19. ISSN 0966-9809

 

Sparkes, M., Gross, M., Celotto, S., Zhang, T. and O'Neill, W. (2008) Practical and theoretical investigations into inert gas cutting of 304 stainless steel using a high brightness fiber laser. Journal of Laser Applications, 20. pp. 59-67. ISSN 1042-346X

 

Cockburn, A., Bray, M. and O'Neill, W. (2008) The laser-assisted cold spray process. The Laser User, 53. pp. 30-31. ISSN 1755-5140

 

Sparkes, M., Gross, M. and O'Neill, W. (2008) A novel non-intrusive sampling technique for CO2 laser on-line beam monitoring utilising a silicon mirror. Optics and Lasers in Engineering, 46. pp. 620-627. ISSN 0143-8166

 

2007

Gross, M.S. and O'Neill, W. (2007) New aspects of melt flow phenomena through narrow kerfs. Journal of Physics D: Applied Physics, 40. pp. 1201-1205. ISSN 0022-3727

 

Pattison, J., Celotto, S., Morgan, R., Bray, M. and O'Neill, W. (2007) Cold gas dynamic manufacturing: a non-thermal approach to freeform fabrication. International Journal of Machine Tools and Manufacture, 47. pp. 627-634. ISSN 0890-6955

 

Novoselova, T., Celotto, S., Morgan, R., Fox, P. and O'Neill, W. (2007) Formation of TiAl intermetallics by heat treatment of cold-sprayed precursor deposits. Journal of Alloys And Compounds, 436. pp. 69-77. ISSN 0925-8388

 

Khan, AH., Celotto, S., Tunna, L., O'Neill, W. and Sutcliffe, CJ. (2007) Influence of microsupersonic gas jets on nanosecond laser percussion drilling. Optics and Lasers in Engineering, 45. pp. 709-718. ISSN 0143-8166

 

2006

Novoselova, T., Fox, P., Morgan, R. and O'Neill, W. (2006) Experimental study of titanium/aluminium deposits produced by cold gas dynamic spray. Surface and Coatings Technology, 200. pp. 2775-2783. ISSN 0257-8972

 

Khan, A.H., O'Neill, W., Tunna, L. and Sutcliffe, C. (2006) Numerical analysis of gas-dynamic instabilities during the laser drilling process. Optics and Lasers in Engineering, 44. pp. 826-841. ISSN 0143-8166

 

Tunna, L., Khan, A., O'Neill, W. and Sutcliffe, C.J. (2006) The effect of processing wavelength and fluence on the microdrilling of 316 L stainless steel with a diode pumped solid state laser. Journal of Laser Applications, 18. pp. 205-209. ISSN 1042-346X

 

Tunna, L., Barclay, P., Cernik, R.J., Khor, K.H., O'Neill, W. and Seller, P. (2006) The manufacture of a very high precision x-ray collimator array for rapid tomographic energy dispersive diffraction imaging (TEDDI). Measurement Science and Technology, 17. pp. 1767-1775. ISSN 0957-0233

 

2005

Perrie, W.,  Rushton, A., Gill, M., Fox, P. and O'Neill, W. (2005) Femtosecond laser micro-structuring of alumina ceramic. Applied Surface Science, 248. pp. 213-217. ISSN 0169-4332

 

Tunna, L., O'Neill, W., Khan, A. and Sutcliffe, C. (2005) Analysis of laser micro drilled holes through aluminium for micro-manufacturing applications. Optics and Lasers in Engineering, 43. pp. 937-950. ISSN 0143-8166

 

Xie, J.W., Fox, P., O'Neill, W. and Sutcliffe, C. (2005) Effect of direct laser re-melting processing parameters and scanning strategies on the densification of tool steels. Journal of Materials Processing Technology, 170. pp. 516-523. ISSN 0924-0136

 

Gross, M. and O'Neill, W. (2005) How far is it worth simulating laser materials processing? The Industrial Laser User. pp. 10-11. ISSN 1366-963X

 

M J, J and G M, R and M D H, G and W, O (2005) The effect of nozzle design on laser micro-machining of M2 tool steels. Journal of Materials Processing Technology, 160. pp. 198-212. ISSN 0924-0136

 

2004

Perrie, W., Gill, M., Robinson, G., Fox, P. and O'Neill, W. (2004) Femtosecond laser micro-structuring of aluminium under helium. Applied Surface Science, 230. pp. 50-59. ISSN 0169-4332

 

Pogson, S., Fox, P., O'Neill, W. and Sutcliffe, C.J. (2004) The direct metal laser remelting of copper and tool steel powders. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 386. pp. 453-459. ISSN 0921-5093

 

Morgan, R., Fox, P., Pattison, J., Sutcliffe, C. and O'Neill, W. (2004) Analysis of cold gas dynamically sprayed aluminium deposits. Materials Letters, 58. pp. 1317-1320. ISSN 0167-577X

 

Morgan, R., Sutcliffe, C.J. and O'Neill, W. (2004) Density analysis of direct metal laser re-melted 316L stainless steel cubic primitives. Journal of Materials Science, 39. pp. 1195-1205. ISSN 0022-2461

 

O'Neill, W. (2004) Fibre laser technology for industrial applications. The Industrial Laser User, 37. p. 24-. ISSN 1366-963X

 

O'Neill, W. (2004) The role of lasers in rapid manufacturing. The Laser User, Summer. pp. 36-37. ISSN 1755-5140

 

2003

Sparkes, M. and O'Neill, W. (2003) On-line measurement of critical laser beam properties. The Industrial Laser User, 32. p. 38-. ISSN 1366-963X

 

Jackson, M.J. and O'Neill, W. (2003) Laser micro-drilling of tool steel using Nd : YAG lasers. Journal of Materials Processing Technology, 142. pp. 517-525. ISSN 0924-0136

 

Jackson, M.J., Robinson, G.M., Mills, B. and O'Neill, W. (2003) Laser micromachining of chromium-rich die steels under controlled atmospheres. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 217. pp. 553-562. ISSN 0954-4054

 

Jackson, M., Robinson, M., Khan, AH., Gill, M., Mills, B. and O'Neill, W. (2003) Micromachining high chromium content steel under controlled gas atmospheres. Journal of Manufacturing Process, 5. pp. 106-117. ISSN 1526-6125

 

Pogson, S.R., Fox, P., Sutcliffe, C.J. and O'Neill, W. (2003) The production of copper parts using DMLR. Rapid Prototyping Journal, 9. pp. 334-343. ISSN 1355-2546

 

2002

Morgan, R.H., Sutcliffe, C.J., Pattison, J., Murphy, M., Gallagher, C., Fox, P. and O'Neill, W. (2002) Cold gas dynamic manufacturing - a new approach to near-net shape metal component fabrication. Proceedings of the Materials Research Society Symposium LL : Materials for Fuel Cells and Fuel Processors, 758. pp. 73-84. ISSN 0272-9172

 

M, J and M D H, G and A, K and W, O (2002) Evaluation of supersonic nozzles for laser micromachining of high-speed steels. Journal of Manufacturing Processes, 4. ISSN 1526-6125

 

O'Neill, W. and Rand, C. (2002) Gas jet analysis in laser cutting. The Laser User, Autumn. pp. 23-25. ISSN 1755-5140

 

Morgan, R.H., Papworth, A.J., Sutcliffe, C., Fox, P. and O'Neill, W. (2002) High density net shape components by direct laser re-melting of single-phase powders. Journal of Materials Science, 37. pp. 3093-3100. ISSN 0022-2461

 

2001

O'Neill, W., Elboughey, A., Steen, W.M. and Volgsanger, M. (2001) Selective removal of steel by a laser slotting process. Proceedings of the Institute of Mechanical Engineers Journal of Engineering Manufacture, Part B, 215. pp. 1051-1064. ISSN 0954-4054

 

O'Neill, W. (2001) Experimental and theoretical analysis of slot generation by laser and high speed gas vortex. Proceedings of IMechE (B) Engineering Manufacture, 215. pp. 1-14. ISSN 0954-4054

 

Morgan, R., Sutcliffe, C.J. and O'Neill, W. (2001) Experimental investigation of nanosecond pulsed Nd : YAG laser re-melted pre-placed powder beds. Rapid Prototyping Journal, 7. pp. 159-172. ISSN 1355-2546

 

Morgan, R., Papworth, A., Sutcliffe, C.J. and O'Neill, W. (2001) Fabrication of metallic objects by direct metal laser re-melting (DMLR) of stainless steel powders. Proceedings of the 12th Solid Freeform Fabrication Symposium. ISSN 1053-2153

 

Tunna, L., O'Neill, W., Sutcliffe, C. and Khan, A.H. (2001) Investigation of multi-wavelength DPSS laser micromachining of stainless steel. The Industrial Laser User, Autumn. pp. 28-30. ISSN 1366-963X

 

Tunna, L., Kearns, A., O'Neill, W. and Sutcliffe, C.J. (2001) Micromachining of copper using Nd : YAG laser radiation at 1064, 532, and 355 nm wavelengths. Optics and Laser Technology, 33. pp. 135-143. ISSN 0030-3992

 

O'Neill, W., Voglsanger, M., Elboughey, A. and Steen, W.M. (2001) On the selective removal of steel by laser-assisted vortex machining. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 215. pp. 1051-1064. ISSN 0954-4054

 

2000

O'Neill, W. and Gabzdyl, J.T. (2000) New developments in laser-assisted oxygen cutting. Optics and Lasers in Engineering, 34. pp. 355-367. ISSN 0143-8166

 

Erasenthiran, P., Watkins, KG., O'Neill, W. and Steen, W.M. (2000) An investigation into the effects of shielding gases in CW Nd:YAG laser welding. Quantum Electronics: Proceedings of the International forum on advanced high-power lasers and applications (AHPLA '99), 30. pp. 462-469

 

1999

O'Neill, W., Sutcliffe, CJ., Morgan, R., Landsborough, A. and Hon, K. (1999) Investigation of multi-layer direct metal laser sintering of 316L stainless steel powder beds. Annals of CIRP, 48. pp. 151-154. ISSN 0007-8506

 

 

1998

O'Neill, W., Sutcliffe, C.J., Morgan, R. and Hon, K.K.B. (1998) Investigation of short pulse Nd: YAG laser interaction with stainless steel powder beds. Proceedings: Solid Freeform Fabrication Symposium, 9. pp. 147-160. ISSN 1053-2153

 

O'Neill, W. (1998) Laser based rapid production technologies. The Industrial Laser User. pp. 32-35. ISSN 1366-963X

 

O'Neill, W. (1998) Laser cutting practice: gas jets and nozzles-part II. The Industrial Laser User. pp. 21-23. ISSN 1366-963X

 

1997

Sparkes, M.R. and Millward, A. (1997) An investigation of the performance of a trihedral planing hull. Transactions of The Institute Of Marine Engineers, 109. pp. 301-311. ISSN 0020-2924

 

O'Neill, W. (1997) Laser cutting practice: gas jets and nozzles. The Industrial Laser User. pp. 10-13. ISSN 1366-963X

 

O'Neill, W. (1997) State of the art in laser cutting. The Industrial Laser User. ISSN 1366-963X

Chen, S-L and O'Neill, W (1997) The effects of power rippling on CO2 laser cutting. Optics and Laser Technology, 29. pp. 125-134. ISSN 0030-3992

 

Erasenthiran, P., O'Neill, W. and Steen, W.M. (1997) An investigation of normal and slant laser cutting using CW and pulsed Co~2 laser for laminated object manufacturing techniques. Proceedings: SPIE the International Society for Optical Engineering. pp. 48-57. ISSN 0361-0748

 

1996

O'Neill, W., Kapadia, P. and Thomas, T. (1996) A study of laser-based removal of polymethylmethacrylate bone cement. Journal of Laser Applications, 8. pp. 149-154. ISSN 1042-346X

 

1995

O'Neill, W. and Steen, W.M. (1995) A three-dimensional analysis of gas entrainment operating during the laser-cutting process. Journal of Physics D-Applied Physics, 28. pp. 12-18. ISSN 0022-3727

 

O'Neill, W., Voglsanger, M., Elboughey, A. and Steen, W.M. (1995) Laser slotting: a new laser machining technique. The Laser User, 001. pp. 18-19. ISSN 1755-5140

 

O'Neill, W. and Gabzdyl, J.T. (1995) The mass transfer behaviour of gas jets in laser cutting. Welding in the World, 35. pp. 6-11. ISSN 0043-2288

 

O'Neill, W. (1995) A method of machining metals. The Industrial Laser User. pp. 7-9

 

1994

O'Neill, W. and Steen, W.M. (1994) A review of theoretical models of laser cutting. Optics and Lasers in Engineering, 3. pp. 281-299. ISSN 0143-8166

 

 

Conference or Workshop Item

2013

Krste Pangovski, Martin Sparkes, Andrew Cockburn, William O'Neill

"Resource Efficiency Improvements through Laser Processing of Designer Materials"

CLEO Europe, May 2013 - European Conference on Lasers and Electro-Optics, Munich, Germany

 

A. Cockburn, M. Sparkes, R. Lupoi, F. Luo & W. O’Neill. "Deposition of Stellite® and Inconel Coatings using Supersonic Laser Deposition". The International Laser Applications Symposium 2013

Industrial Laser Application Symposium

 

Pangovski, K., Sparkes, M., Cockburn, A. and O’Neill, W. (2013).  “Digital holograph analysis of laser induced micro plasma in micro machining applications: temporal and spatial comparisons to thermo nuclear explosions”, presented abstract at the 2nd Annual EPSRC Manufacturing the Future Conference, 17-18 September 2013, Cranfield, UK.  This presentation won the CIRP sponsored best presentation award.

 

A Cockburn, R Lupoi, M Sparkes, W O’Neill. Supersonic Laser Deposition of Corrosion and Wear Resistant Materials. pp 387-391 Proceedings of the 37th International MATADOR Conference. Ed Lin Li, Srichand Hinduja. Springer 2013. ISBN 978-1-4471-4479-3

The International Laser Applications Symposium 2013 - See more at: http://ilas2013.co.uk/#sthash.iD0WtN8G.dpuf
The International Laser Applications Symposium 2013 - See more at: http://ilas2013.co.uk/#sthash.iD0WtN8G.dpuf

 

2012

J. Parkins, R. Jourdain, S. Marson, P. Shore, M. Sparkes, W. O'Neill, "Laser Assisted Plasma Processing: An Overview", International Conference of the European Society for Precision Engineering and Nanotechnology, Stockholm Sweden, 4th-8th June, 2012 (in press)

 

Pangovski, K., The, P. S., Alam, S., Richardson, D., Demi, A. G. and O’Neill, W. (2012).  “Designer pulses for precise machining of silicon – a step towards photonic compositions”, 31st International Congress on Applications of Lasers and Optics-Electronics (ICALEO 2012), 23-27 September 2012, Anaheim, CA, USA.

 

2011

Krste Pangovski & William O'Neill. “Silicon response study to 1000 ns - 1 ns single pulses“. AILU September 2011, Warrington, UK.

 

Krste Pangovski & William O'Neill. “Application of picosecond lasers for surface modification and polishing”. Photonics London, July 2011, London, UK.

 

Krste Pangovski & William O'Neill. “Investigation of low nanosecond light-matter interaction mechanisms”. ICALEO October 2011, Orlando, FL, USA.

 

Lupoi, R., Cockburn, A., Sparkes, M., Bryan, C., Luo, F., & O'Neill, W. (2011). Hardfacing using supersonic laser depostion of stellite-6. 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011, 435-441.

 

Hopkinson, D., Cockburn, A., O'Neill, W. Fiber laser processing of amorphous rare earth NeFeB magnetic materials. 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011.

 

Earl, C., Hilton, P., Blackburn, J. and O'Neill, W: A Comparitive Study of 3D Laser Surface Modification and the Humping Phenomenon In: 30th International Congress on Applications of Lasers and Electro-Optics (ICALEO) 23 - 27 October 2011, Orlando, FL. USA.

 

A. Cockburn, R. Lupoi, M. Sparkes and W. O’ Neill “Supersonic laser deposition of corrosion and wear resistant materials”, article published in the 2nd EPRI conference, Orlando (US), June 2011.

 

2010

Bray, M., Cockburn, A., Lupoi, R., O'Neill, W. and Sparkes, M. (2010) Supersonic laser deposition of Ti and Ti64 alloys. In: 29th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2010), 26-9-2010 to 30-9-2010, Anaheim, California, USA.

 

Lupoi, R. and O'Neill, W. (2010) An investigation on powder stream in cold gas spray (CGS) nozzles. In: 5th European Conference on Computational Fluid Dynamics, CFD 2010, 14-6-2010 to 17-6-2010, Lisbon, Portugal.

 

Xue, X, Marson, S, Patel, MK, Attia, UM, Bailey, C, O'Neill, W, Topham, D and Desmulliez, MPY (2010) Biofluid behaviour in 3D microchannel systems: Numerical analysis and design development of 3D microchannel biochip separators. Proceedings - Electronic Components and Technology Conference. pp. 1021-1030. ISSN 0569-5503

 

Chopra, P and Li, K and O'Neill, W and Gabzdyl, J (2010) Micromachining of glassy carbon toolsets for micro embossing applications. 29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings, 103. pp. 994-996.

 

Li, K, O'Neill, W and Gabzdyl, J (2010) On the percussion drilling of SI using a 20W MOPA based YB fiber laser. 29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings, 103. pp. 1055-1063.

 

2009

Cockburn, A., Bray, M. and O'Neill, W. (2009) Laser assisted cold spray: the effect of temperature and velocity on coating characteristics. In: 5th International Congress on Laser Advanced Materials Processing, LAMP2009, 29-6-2009 to 2-7-2009, Kobe, Japan.

 

2008

Zhang, T., Sparkes, M.R., Gross, M.S. and O'Neill, W. (2008) The studies of laser oxygen thick section cutting using disk laser. In: 3rd Pacific International Conference on Application of Lasers and Optics (PICALO), 16-4-2008 to 18-4-2008, Beijing, China.

 

Sparkes, M.R., Zhang, T., Celotto, S., Gross, M. and O'Neill, W. (2008) Cutting with fibre lasers. In: AILU Workshop: Fibre Lasers: the Future of Laser Materials Processing Technology, 8-3-2006.

 

O'Neill, W., Gross, M.S., Sparkes, M.R. and Zhang, T. (2008) Analysis of disc and yb laser cutting of metals. In: Proceedings of LaserSys, 24-3-2008 to --, Stuttgart, Germany.

 

O'Neill, W., Li, K., Hu, Q., Chopra, P., Kanghee, J. and Buntardjo, A. (2008) Microfabrication using a single mode Yb fiber laser. In: Fourth International Conference on Multi-Material Micro Manufacture (4M2008), 9-9-2008 to 11-9-2008, Cardiff, UK pp. 12-17.

 

O'Neill, W. and Li, K. (2008) Applications of Yb lasers in microelectronics fabrication. In: Conference on Photonic Applications, Systems and Technologies, PHAST''08, 6-5-2008 to 8-5-2008, San Jose, USA.

 

Bray, M., Cockburn, A. and O'Neill, W. (2008) Recent developments of the laser-assisted cold spray process. In: 9th National Conference on Rapid Design, Prototyping & Manufacture, 13-6-2008 to --, Lancaster University.

 

O'Neill, W. and Li, K. (2008) High precision machining of Si using a single mode fibre laser. In: 3rd Pacific International Conference on Applications of Lasers and Optics, 16-4-2008 to 18-4-2008, Beijing, China.

 

Stoyan, S., Christopher, B., Richard, L., Ben, H., Alan, W., William, O., Robert A, D.,  Christopher, S., Daniel, U. and Heather J. A. (2008) Modelling and prototyping the conceptual design of 3D CMM micro-probe. In: 2nd Electronics System-Integration Technology Conference, ESTC' 08, 1-9-2008 to 4-9-2008, Greenwich, London pp. 193-198.

 

Hu, Q., Chopra, P., Hu, P. and O'Neill, W. (2008) 3D microprobe manufacturing techniques. In: 3D-Mintegration Annual Conference, 1-9-2008 to --, Greenwich, UK.

 

Hu, Q., PingAn, H. and O'Neill, W. (2008) Forming production of micro and nano-scale components. In: AILU Workshop Industrial Opportunities in Laser Micro and Nano Processing, 4-6-2008 to --, Warrington, UK.

 

O'Neill, W. and Li, K. (2008) High precision machining of Si using a single mode fibre laser. In: 3rd Pacific International Conference on Applications of Lasers and Optics, 16-4-2008 to 18-4-2008, Beijing, China.

 

Hu, Q. and O'Neill, W. (2008) Laser assisted micro and nano replication. In: 3rd Pacific International Conference on Applications of Lasers and Optics (PICALO 2008), 16-4-2008 to 18-4-2008, Beijing, China.

 

O'Neill, W. (2008) High repetition rate MOPA based fibre laser for micro machining applications. In: 4th International Workshop on Fiber Lasers, 5-11-2008 to 6-11-2008, International Congress Center, Dresden, Germany.

 

2007

O'Neill, W., Pattison, J. and Bray, M. (2007) Development of the cold spray process for additive fabrication. In: Advanced Laser Applications Conference, 24-9-2007 to 26-9-2007, Burlington, USA.

 

Sparkes, M., Gross, M. and O'Neill, W. (2007) High brightness fiber and disc laser cutting. In: Advanced Laser Applications Conference, 24-9-2007 to 26-9-2007, Burlington, USA.

 

O'Neill, W., Jewell, S. and Hu, Q. (2007) Laser hot forging of micro and meso components. In: Advanced Laser Applications Conference, 24-9-2007 to 26-9-2007, Burlington, MA, US.

 

Sparkes, M., Gross, M. and O'Neill, W. (2007) A novel non-intrusive technique for CO2 laser on-line beam monitoring. In: Advanced Laser Applications Conference, 24-9-2007 to 26-9-2007, Burlington, VT, US.

 

Pattison, J.A., Bray, M. and O'Neill, W. (2007) Cold spray additive fabrication. In: 4th International Conference on Responsive Manufacturing, 17-9-2007 to 19-9-2007, Nottingham, UK.

 

Hu, Q., Li, K. and O'Neill, W. (2007) Focused ion beam machining of glassy carbon for applications in laser based nano and micro lithography. In: NanoFIB 2007: Advances in Focused Ion Beam Microscopy Conference, 29-6-2007 to --, Manchester, UK.

 

O'Neill, W. and Seefeld, T. (2007) High brightness laser cutting and welding. In: Lasers in Manufacturing (LIM 2007), 18-6-2007 to 21-6-2007, Munich, Germany.

 

Bray, M., Pattison, J. and O'Neill, W. (2007) Metal deposition using a novel laser-assisted cold spraying process. In: 8th National Conference on Rapid Design, Prototyping and Manufacture, 15-6-2006 to --, Buckingham Chilterns University College, UK.

 

O'Neill, W., Sparkes, M.R., Gross, M.S. and Zhang, T. (2007) High brightness cutting and welding. In: Association of Laser Users (AILU) Workshop: Advances in Lasers and Beam Delivery Enabling New Industrial Applications, 12-12-2007 to --, Cambridge, UK.

 

O'Neill, W. and Tunna, L. (2007) Axisymmetric micro-tuning with ultrafast laser pulses. In: 3D-Mintegration Conference and Exhibition 2007, 29-10-2007 to 30-10-2007, Loughborough, UK.

 

Hu, Q. and O'Neill, W. (2007) Laser print forming: current progress and future challenges. In: 3D-Mintegration Conference and Exhibition 2007, 29-10-2007 to 30-10-2007, Loughborough, UK.

 

2006

Sparkes, M.R., Gross, M.S., Celotto, S. and O'Neill, W. (2006) A novel non-intrusive technique for CO2 laser on-line beam monitoring. In: Laser Materials Processing Conference (part of ICALEO' 06), 30-10-2006 to 2-11-2006, Scottsdale, AZ, USA .

 

Sparkes, M.R., Gross, M.S., Celotto, S., Zhang, T. and O'Neill, W. (2006) Inert cutting of medium section stainless steel using a 2.2kW high brightness fibre laser. In: International Congress on Applications of Lasers & Electro-Optics (ICALEO 2006), 29-10-2006 to 31-10-2006, Scottsdale, AZ, US.

 

Hu, Q. and O'Neill, W. (2006) Laser print forming - challenges, applications and current progress. In: 3D-Mintegration Conference, 21-9-2006 to --, Loughborough, UK.

 

Pattison, J. and O'Neill, W. (2006) Cold gas dynamic manufacturing: a non-thermal approach to additive manufacturing. In: 7th National Conference on Rapid Design, Prototyping and Manufacture, 16-6-2006 to --, High Wycombe, UK pp. 57-66.

 

Bray, M.J., Celotto, S. and O'Neill, W. (2006) Development of a laser assisted material spray process. In: Laser Materials Processing Conference (part of ICALEO' 06), 30-10-2006 to 2-11-2006, Scottsdale, AZ, USA .

 

Gross, M., Celotto, S. and O'Neill, W. (2006) Melt flow in narrow thick section kerfs. In: Laser Materials Processing Conference (part of ICALEO' 06), 30-10-2006 to 2-11-2006, Scottsdale, AZ, USA.

 

Gross, M., Celotto, S. and O'Neill, W. (2006) Melt flow in narrow thick section kerfs. In: LAMP 2006, 31-10-2006 to 2-11-2006, Cambridge, UK.

 

2005

Gross, M.S. and O'Neill, W. (2005) Discrete modelling and simulation in manufacturing processing operations. In: International Conference on Responsive Manufacturing (ICRM 2005), 12-9-2005 to 14-9-2005, Guangzhou, China.

 

Pattison, J.A., Morgan, R.M., Celotto, S. and O'Neill, W. (2005) Cold spray nozzle design and performance evaluation using particle image velocimetry. In: International Thermal Spray Conference (ITSC-05), -5-2005 to --, Basel, Switzerland.

 

Sparkes, M., Zhang, T., Rand, C., Celotto, S. and O'Neill, W. (2005) Application of a high brightness Yb Fibre laser in high speed cutting of C-Mn sheet steel. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 2005), 31-10-2005 to 3-11-2005, Miami (FL), USA.

 

Gill, M., Perrie, W., Rushton, A., Fox, P. and O'Neill, W. (2005) Characterization of ultrafast microstructuring of alumina (Al2O3). In: Commercial and Biomedical Applications of Ultrafast Lasers V, 27-1-2005 to --, San Jose, CA, USA pp. 43-52.

 

Gabzdyl, J., Sparkes, M. and O'Neill, W. (2005) Beam monitoring benefits For shop floor laser applications. In: The Laser Materials Processing Conference, --2005 to --.

 

2004

O'Neill, W., Sparkes, M., Varnham, M., Horley, R., Birch, M. and Woods, S. (2004) High power high brightness industrial fibre laser technology. In: 23rd ICALEO 2004, 4-10-2004 to --, San Francisco, USA p. 301.

 

2003

Pattison, J.A., Morgan, R.H., Sutcliffe, C.J., Fox, P. and O'Neill, W. (2003) Cold gas dynamic manufacturing. In: The 4th National Conference on Rapid and Virtual Prototyping and Applications, -6-2003 to -- pp. 33-42.

 

Pogson, S., Fox, P. and O'Neill, W. (2003) The effect of varying laser scanning speed on DMLR processed metal parts. In: Fourth National Conference on Rapid and Virtual Prototyping and Applications, -6-2003 to --, High Wycombe, UK pp. 43-50.

 

Arokiam, I., Sparkes, M.R., Brookfield, D. and O'Neill, W. (2003) Beam focus control in rapid laser cutting. In: ICALEO03, 13-10-2003 to 16-10-2003, Jacksonville, FL, USA.

 

Sparkes, M. and O'Neill, W. (2003) On-line beam measurement of critical laser beam properties. In: 22nd International Congress on Applications of Laser and Electro Optics, (ICALEO 2003), 13-10-2003 to 16-10-2003, Jacksonville, FL, USA.

 

Rand, C., Sparkes, M.R., O'Neill, W., Sutcliffe, C. and Brookfield, D. (2003) Optimisation of melt removal in laser cutting. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 03), 13-10-2003 to 16-10-2003, Jacksonville, FL.

 

2002

Sparkes, M., O'Neill, W., Gabzdyl, J.G. and Modern, P. (2002) Process laser beam diagnostics. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 2002), 14-10-2002 to 17-10-2002, Scottsdale, Arizona (AR).

 

O'Neill, W. and Gabzdyl, J.T. (2002) Developments in thick section laser cutting. In: International Conference on Cutting Technology 2002 (ICCT 2002), 23-4-2002 to 24-4-2002, Hannover, Germany.

 

2001

Morgan, R., Papworth, A.J., Sutcliffe, C., Fox, P. and O'Neill, W. (2001) Direct metal laser re-melting (DMLR) of 316L stainless steel powder. Part 1:Analysis of thin wall structures. In: Proceedings of the 12th Annual Solid Freeform Fabrication Symposium, 6-8-2001 to 8-8-2001, Austin, TX.

 

Morgan, R., Sutcliffe, C., Papworth, A. and O'Neill, W. (2001) Fabrication of metal components by direct metal laser re-melting (DMLR). In: Proceedings of the 12th Annual Solid Freeform Fabrication Symposium 2001, 6-8-2001 to 8-8-2001, Austin, TX.

 

Hutchinson, T., Fox, P. and O'Neill, W. (2001) Direct production of metallic objects using laser fused slips. In: Materials Opportunities on Layered Manufacturing Technology 2, 3-6-2001 to 6-6-2001, UMIST, Manchester, Great Britain.

 

Tunna, L., Khan, A. and O'Neill, W. (2001) Micromachining and cutting of 316L SS using DPSS lasers under controlled atmospheres. In: International Congress on Applications of Lasers and Electro-Optics (ICALEO 2001), 13-10-2001 to 19-10-2001, Florida, USA.

 

Khan, A.H., O'Neill, W., Sutcliffe, C.J. and Tunna, L. (2001) Design of an axisymmetric supersonic nozzle for micro laser cutting. In: The 20th ICALEO Congress 2001, 15-10-2001 to 18-10-2001 pp. 353-362.

 

2000

O'Neill, W. (2000) Rapid production of micro components. In: 11th International Workshop on Rapid System Prototyping (RSP 2000), 21-6-2000 to 23-6-2000, Paris, France.

 

Erasenthiran, P., Ball, R., Watkins, K.G., O'Neill, W. and Steen, W.M. (2000) Laser edge-welding in layered manufacturing techniques. In: High-Power Lasers in Manufacturing, 1-11-1999 to --, Osaka, Japan pp. 69-81.

 

1999

O'Neill, W., Sutcliffe, C.J., Gavriilidis, A. and Angeli, P. (1999) Rapid production of a microreactor for the production of chemical synthesis. In: Time-Compression Technologies Conference 1999, -7-1999 to --, Nottingham UK.

 

Sutcliffe, C.J., O'Neill, W., Kahn, A.H. and Rand, C. (1999) Computational and experimental investigations of supersonic micro nozzles for laser processing applications. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 1999), 15-11-1999 to 18-11-1999, San Diego, California, U.S.A.

 

O'Neill, W., Sutcliffe, C.J., Tunna, L. and Kearns, A. (1999) Limiting factors to the fabrication of precision deep microstructures. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 1999), 15-11-1999 to 18-11-1999, San Diego, USA.

 

Tolfree, D., O'Neill, W., Tunna, L. and Sutcliffe, C.J. (1999) Microfabrication of deep microstructures. In: MICRO/MEMS Symposium '99, -11-1999 to --, Gold Coast, Australia.

 

1998

O'Neill, W., Sutcliffe, C.J., Morgan, R. and Hon, K.K.B. (1998) Fused layer production in 316 stainless steel powder beds using high frequency Nd:YAG laser pulses. In: Laser Materials Processing Conference, 17-11-1998 to 20-11-1998, Orlando, FL, USA B78-B87.

 

Ball, R., O'Neill, W. and Steen, W.M. (1998) Laser surfacing techniques for laminated tooling. In: International Congress on Applications of Lasers and Electro-optics, 17-11-1998 to 20-11-1998, Orlando, FL, USA.

 

Erasenthiran, P. Clucas, D.A.V., O'Neill, W. and Steen, W.M. (1998) Material removal rate and depth determination in laser edge-machining. In: Laser Materials Processing Conference, 17-11-1998 to 20-11-1998, Orlando, FL, USA B130-B139.

 

O'Neill, W., Gabzdyl, J.T. and Stracey, R. (1998) New developments in laser assisted oxygen cutting: Lasox. In: The Laser Institute of America, -- to -- B88-B97.

 

1997

Erasenthiran, P., Ball, R., O'Neill, W. and Steen, W.M. (1997) Laser step shaping for laminated object manufacturing parts. In: The Laser Materials Processing Conference: Icaleo' 97, -11-1997 to -- E84-E92.

 

1993

Williams, K., O'Neill, W. and Steen, W.M. (1993) Melt-pool and keyhole dynamics during thin-plate laser welding of steel [1810-117]. In: 9th International Symposium on Gas Flow and Chemical Lasers, 4-5-1992 to --, Heraklion Greece 594-.

 

O'Neill, W. and Steen, W.M. (1993) The reflectivity of CO2 laser light incident on oxidised Fe. In: European Theoretical Modelling Workshop, --1993 to --, Technical University of Vienna, Vienna, Austria.

 

1992

O'Neill, W., Gabzdyl, J.T. and Steen, W.M. (1992) The dynamical behaviour of gas jets in laser cutting. In: International Congress on Applications of Lasers and Electro Optics (ICALEO 1992), 25-10-1992 to 29-10-1992, Orlando, FL, USA.

 

O'Neill, W. and Steen, W.M. (1992) Prospective modelling of thick section laser cutting. In: European Theoretical Modelling Workshop, --1992 to --, Technical University of Vienna, Vienna, Austria.

 

O'Neill, W., Gabzdy, J.T. and Steen, W.M. (1992) Theoretical & experimental analysis of jet contamination through turbulence effects occurring in oxygen assisted laser cutting of thick section steel. In: European Theoretical Modelling Workshop, -- to --, Technical University of Vienna, Vienna, Austria.

 

1988

O'Neill, W. and Steen, W.M. (1988) Infrared absorption by metallic surfaces as a result of powerful UV laser pulses. In: ICALEO, 30-10-1988 to 4-11-1988, Santa Clara, California, U.S.A.

 

Book Section

Celotto, S., Pattison, J., Ho, J.S., Johnson, A.N. and O'Neill, W. (2007) The economics of the cold spray process. In: The Cold Spray Materials Deposition Process: Fundamentals and Applications. Woodhead Publishing, Abington, Cambridge UK. ISBN 1845691814,9781845691813

 

Gill, M., Perrie, W., Fox, P. and O'Neill, W. (2005) Surface nanostructuring of Ni, Ti and SS316 stainless steel using ultrafast laser interactions. In: Photon Processing in Microelectronics and Photonics IV, 5713. The International Society for Optical Engineering (SPIE), USA. ISBN 081945687X

 

O'Neill, W., Gill, M., Perrie, W., Fox, P. and Prior, D. (2005) Analysis of femtosecond (775nm) and nanosecond (355nm) micromachined Ni surfaces using electron backscattering. In: Photon Processing in Microelectronics and Photonics IV, 5713. Society of Photo-Optical Instrumentation Engineers (SPIE), pp. 123-131. ISBN 081945687X

 

Gill, M., Perrie, W., Papworth, A., Fox, P. and O'Neill, W. (2005) Formation of nanoparticles from ultrafast laser condensates of metal targets. In: Photon Processing in Microelectronics and Photonics IV, 5713. The International Society for Optical Engineering, USA, pp. 560-567. ISBN 081945687X

 

O'Neill, W. (2004) Laser separating. In: Laser Physics and Applications. New Series Group 8: Advanced Materials and Technologies, C . Springer-Verlag, 17, 495-. ISBN 3540001050

 

Pogson, S., Fox, P. and O'Neill, W. (2002) Experimental investigation of the direct metal laser re-melting of dissimilar metals. In: Rapid Prototyping, Tooling and Manufacturing. Professional Engineering Publishing/Wiley & Son, London, UK, pp. 139-147. ISBN 1860583741

 

Erasenthiran, P., Jungreuthmayer, C., O'Neill, W. and Steen, W.M. (1997) An investigation of step shaping using Nd:YAG laser for parts produced by laminated object manufacturing technique. In: Laser assisted net shape engineering (LANE 97). Meisenbach GmbH, pp. 541-554. ISBN 3875250907

 

O'Neill, W., Steen, W. and Gabzdyl, J. (1994) A study of gas entrainment effects operating during the laser cutting process. In: ICALEO '93: Laser Materials Processing. Society of Photo-Optical Instrumentation Engineers (SPIE), pp. 21-29. ISBN 0912035501

 

 

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