Microinstrumentation Laboratory

Selected Publications

2010

G. H. Chapman, B. L. Gray, V. K. Jain, “Defect tolerance in microfluidic chambers for capacitive biosensors”, SPIE Photonics West Proceedings, January 2010, San Jose, 10 pages

A. Khosla, B. L Gray, “Properties of Conductive Micromoldable thermosetting polymer for electronic Routing in highly flexible microfluidic systems”,SPIE Photonics West Proceedings, January 2010, San Jose, 8 pages.

A. Khosla, B. L. Gray, D. B. Leznoff, J. Herchenroeder, D. Miller, “Fabrication of integrated permanent micromagnets for microfluidic systems”, SPIE Photonics West Proceedings, January 2010, San Jose, 8 pages.

S. Grist, M. Haq, J.N. Patel, B.L. Gray, B. Kaminska, “Effect of surface treatments/coatings and softbake profile on surface uniformity and adhesion of SU-8 on a glass substrate”, SPIE Photonics West Proceedings, January 2010, San Jose, 10 pages.

2009

INVITED PAPER M. Giassa, A. Khosla, B.L. Gray, M. Parameswaran, K. Kholi ,R. Rameseshan, “Applications for Low Frequency Impedance Analysis Systems”, Journal of Electronic Testing: Theory and Applications, published online 15 December 2009.

J.N. Patel, B. Kaminska, B.L. Gray, B.D. Gates, “A sacrificial SU-8 mask for direct metallization on PDMS”, Journal of Micromechanics and Microengineering (JMM), 19 115014 (10 pages), (2009).

A. Khosla, B.L. Gray, “Preparation, Characterization, and Micromoulding of Multi-walled Carbon Nanotube Polydimethylsiloxane Conducting Nanocomposite Polymer”, Materials Letters, 63:13-14, pp. 1203-1206, 2009.

M. Giassa, A. Khosla, B.L. Gray, M Parameswaran, K. Kholi, R. Rameseshan, “Applications of Low Frequency Impedance Analysis Systems”, The 15th IEEE International Mixed-Signals, Sensors,and Systems Test Workshop, June 2009, 5 pages.

A. Khosla, B. L. Gray, B. Kaminska, M Parameswaran, “Preparation, Micro-Patterning and Electrical Characterization of Functionalised Carbon-Nanotube Polydimethylsiloxane Nanocomposite”, 13th International IUPAC Conference on Polymers and Organic Chemistry, July 2009, Montreal, 2 pages.

J. Patel, B. Kaminska, B. L. Gray, B. D. Gates, “SU-8 as a peel-off mask for reliable metallization on PDMS for an electro-enzymatic glucose sensor”, The Fifth International Conference on Microtechnologies in Medicine and Biology, Quebec City, April 2009, 2 pages.

K. Giroux, P. Kalyanam, N. Edelkhani, A. Khosla, B. Gray, M. Parameswaran, “Resonance Based Measurement Technique For The Detection of Ferromagnetically tagged Bio-Molecules”, The Canadian Medical and Biological Engineering Society (CMBEC 32), May 2009.

2008

T. Ueda, B.L. Gray, Y. Chen, P. Li, “PDMS lid for sealing microchannels after cell culturing”, Micromechanics and Microengineering Europe (MME), Aachen, Sept 2008, 4 pages.

J. N.Patel, B. Kaminska, B.L. Gray, B. D. Gates, “PDMS as a sacrificial substrate for SU-8 based biomedical and microfluidic applications”, Journal of Micromechanics and Microengineering, vol. 18, pp. 035043, 2008.

INVITED PAPER FOR SPECIAL ISSUE S. Westwood, S. Jaffer, B.L. Gray, "Enclosed SU-8 and PDMS microchannels with integrated interconnects for chip-to-chip and world-to-chip connections", Journal of Micromechanics and Microengineering, June 2008.

S. Jaffer, and B.L. Gray, "Polymer mechanically interlocking structures as interconnect for microfluidic systems", Journal of Micromechanics and Microengineering, vol. 18, pp. 035043, 2008.

B.L. Gray, "Microfluidic Assembly", Springer Encyclopedia of Microfluidics and Nanofluidics, Dongqing Li, ed., June 2008

J.N. Patel, B.L. Gray, B. Kaminska, B.D. Gates, “Flexible glucose sensor utilizing multilayer PDMS process”, IEEE 30th Annual Engineering in Medicine and Biology Conference, Vancouver, August 2008.

S. M. Westwood, B. L. Gray, S. Grist, K. Huffman, S. Jaffer, and K. L. Kavanagh, “SU-8 Polymer Enclosed Microchannels with Interconnect and Nanohole Arrays as an Optical Detection Device for Biospecies”, IEEE 30th Annual Engineering in Medicine and Biology Conference, Vancouver, August 2008.

J. N.Patel, B.L. Gray, B. Kaminska B. D. Gates, “Design for testing SU-8 and PDMS based hybrid glucose sensor”, The 14th IEEE International Mixed-Signals, Sensors,and Systems Test Workshop, Vancouver, June 2008.

B.L. Gray, S. Jaffer, D. Sahota, S.M. Westwood, “Mechanical and Fluidic Characterization of Microfluidic Interconnects for Lab on a Chip Applications”, The 14th IEEE International Mixed-Signals, Sensors,and Systems Test Workshop, Vancouver, June 2008.

S. Jaffer, B.L. Gray, D.G. Sahota, and M.H. Sjoerdsma, "Mechanical assembly and magnetic actuation of polydimethylsiloxane-iron composite interconnects for microfluidic systems", in SPIE Photonics West, vol. 6886, pp. 68860G, January 2008.

T. Ueda, and B.L. Gray, "Flexible enclosure for fluidic sealing of microcomponents", in SPIE Photonics West, vol. 6886, pp. 68860Q, January 2008.

J.N. Patel, B. Kaminska, B.L. Gray and B.D. Gates, "Hybrid polymer fabrication process for electro-enzymatic glucose sensor", in SPIE Photonics West, vol. 6886, pp. 68860P, January 2008.

A. Khosla, B. L. Gray, M. Pallapa, I. G. Foulds, M. Parameswaran, “Preparation and Patterning of Conductive SU-8 Nanocomposite”, First Pacific Northwest Microsystems and Nanotechnology Meeting, Friday Harbor, USA, Sept 2008, 2 pages.

K. Kohli, R. Ramasesha, A Khosla, M. Giassa, B.L. Gray, A. Parameswaran, “Initial investigation of breast cancer screening method for detecting sub-millimeter anomalies”,First Pacific Northwest Microsystems and Nanotechnology Meeting, Friday Harbor, USA, Sept 2008, 2 pages.

J.N. Patel, B.L. Gray, B. Kaminska, B.D. Gates, “SU-8 as a peel-off mask for reliable metal patterning on PDMS”, First Pacific Northwest Microsystems and Nanotechnology Meeting, Friday Harbor, USA, Sept 2008, 2 pages.

2007

J.N. Patel, B. Kaminska, B.L. Gray and B.D. Gates, "Electro-enzymatic glucose sensor using hybrid polymer fabrication process", accepted for presentation at the 14th IEEE International Conference on Electronics, Circuits and Systems (ICECS 2007), December 2007.

*Award for Best Poster and Oral Presentation at Micromechanics Europe 2007

S. Jaffer, S.M. Westwood, and B.L. Gray, "Enclosed SU-8 and PDMS microchannels with integrated interconnect and world-to-chip structures," in Micromechanics and Microengineering Europe (MME), Guimaeres, Portugal, September 2007.

J.N. Patel, B. Kaminska, B.L. Gray, and B.D. Gates, "Effect of self-assembled monolayers (SAMs) in binding glucose oxidase for electro-enzymatic glucose sensor with gold electrodes," in Engineering in Medicine and Biology Society, 2007 EMBS 2007 29th Annual International Conference of the IEEE, pp. 2677-2680, 2007.

J.N. Patel, B.L. Gray, B. Kaminska, B. Gates, "Electro-Enzymatic Sensor for Non-Invasive Glucose Measurement", in Canadian Conference on Electrical and Computer Engineering, April 2007, pp.421-424.

T. Ueda, S. Jaffer, S. Westwood, B.L. Gray, "Design of Electrical Interconnect for SU-8 Microfluidic Systems", in Canadian Conference on Electrical and Computer Engineering, April 2007, pp.5-7.

S. M. Westwood, S. Jaffer, O. A. Lui, B.L. Gray, "Thick SU-8 and PDMS three-dimensional enclosed channels for free-standing polymer microfluidic systems", in Canadian Conference on Electrical and Computer Engineering, April 2007, pp.12-15.

S. Jaffer and B.L. Gray, "Mechanically assembled polymer interconnects with dead volume analysis for microfluidic systems", in SPIE Photonics West, vol. 6465, January 2007.

S. Westwood, A. Gojova, B. Kuo, A. I. Barakat, and B.L. Gray, "Initial Investigation of SU-8 Photopolymer as a Material for Non-Invasive Endothelial Cell Research Platforms", in SPIE Photonics West, vol. 6465, January 2007.

J. Dykes, D.K. Poon, J. Wang, D. Sameoto, J. T. K. Tsui, C. Choo, G. H. Chapman, A. M. Parameswaran, B.L. Gray, "Creation of embedded channels in SU-8 using two distinct exposure wavelengths", in SPIE Photonics West, vol. 6465, January 2007.

2006

O. Lui, B.L. Gray, "Microneedle array with interconnects for transdermal drug delivery", in 29th Canadian Medical and Biological Engineering Conference, June 2006.

J.N. Patel, A. H. Ma, T. Ueda, B. Gray, A. Parmeswaran, B. Kaminska, "A Novel 3-way Cell Sorter using Power Efficient Electrolysis based Actuator", in Canadian Conference on Electrical and Computer Engineering, May 2006.

B.L. Gray, Invited article, "Photodiodes", The Wiley Encyclopedia of Biomedical Engineering, Metin Akay (Editor), 2006.

2005

B.L. Gray, S. Jaffer, "Mechanical and Microfluidic Interconnects in SU-8 Photopolymer", in Proc. ASME 3rd International Conference on Microchannels and Minichannels, Toronto, June 2005.

2004

B.L. Gray, S.D. Collins, R.L. Smith, "Interlocking mechanical and fluidic interconnections for microfluidic circuit boards," Sensors and Actuators A, V12, April 2004, pp. 18-24.