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Dr. B. Stoeber

Dr. B. Stoeber

Department of Mechanical Engineering and
Department of Electrical and Computer Engineering
office: 3112 Kaiser
mail: 2054-6250 Applied Science Lane
University of British Columbia
Vancouver, B.C. V6T 1Z4, Canada
phone: 604 827-5907
FAX: 604 822-2403



Ph.D. 2002, University of California, Berkeley, U.S.A.
Dipl.-Ing. 1998, Technische Universität Darmstadt, Germany
Diplome 1998, Ecole Centrale de Lyon, France

Research Interests

- Microfabrication Technology
- System Integration

Microflow Phenomena
- Flow Control in Microfluidic Devices
- Microflow Characterization Methods
- Complex Microflows
. - Multi-phase microflows
. - Thermally responsive fluids

Sensor Technology
- Biomedical Sensor Applications
- Sensors for Environmental Control


Dr. B. Stoeber

Group Members:


Research Projects

Microneedles for Drug DeliveryWhile silicon microneedles (see picture) are effective for drug delivery, the associated fabrication process is rather expensive. We are developing new manufacturing processes for batch fabrication of inexpensive microneedles. These devices will be designed for drug delivery and biosensing.
Printed Sensing TechnologyOur research group is developing a variety of sensing devices fabricated using inkjet printing. We are exploring physical and chemical sensing technology for applications in air quality monitoring, structural health monitoring, breath analysis, and other important applications.
MRI Microflow VisualizationThe goal of this project is to design and construct a portable and cost effective magnetic resonance imaging (MRI) instrument that is capable of resolving features at microscale to image flow fields of complex fluids in capillary tubes.Schematics of MRI for Flow Visualization Instrument
Microflow control technologyWe are developing technology for microflow control that is suitable for portable low-cost instruments. Building blocks are fully integratable devices including microvalves, micropumps and micromixers. Concerns are low power consumption, fast response time and low cost.
Transport of colloids in microfluidic environmentsWe design microfluidic environments for targeted investigations of colloid transport. Focus of this work are particle-particle interactions, as well as particle-wall interactions. This study will lead to design recommendations for robust microfluidic devices.
Thermal Modulation of Microchannel WidthsWe develop methods for thermal modulation of the widths of microchannels during operation of microfluidic devices. This allows arbitrary modulation of the channel width after device fabrication so that flow rate and flow velocity can be set independently.
Analog Large-Deflection Micromirror ArraysThis project aims at developing arrays of micromirrors with high resonance frequencies and high tilt angles in all directions. The mirrors are actuated through electrostatic forces to reach continuous tilt angles. The mirrors are fabricated using multi user MEMS processes.
Advanced Fabrication Techniques For Micro/Nano StructuresWe develop methods to enhance current microfabrication technologies. Focus of this work is on material functionality and user friendliness.Advanced Fabrication

Journal Publications

(Table View)
Suresha K. Mahadeva, Konrad Walus and Boris Stoeber, "Fabrication and Testing of Piezoelectric Hybrid Paper for MEMS Applications", IEEE MEMS-2014: IEEE MEMS, 26/01/2014. Abstract Tagged XML BibTex
M. Jalaal, B. Stoeber, "Controlled spreading of thermo-responsive droplets", SOFT MATTER, vol. 10, pp. 808-812, 11/2013. Tagged XML BibTex
Suresha K. Mahadeva, John Berring, Konrad Walus and Boris Stoeber, "Effect of poling time and grid voltage on phase transition and piezoelectricity of ploy(vinyledene fluoride) thin films using corona poling", Journal of Physics D: Applied Physics, vol. 46, issue 28, pp. 285305, July/2013. Abstract Tagged XML BibTex
Christoph Sielmann, John Robert Busch, Konrad Walus, Boris Stoeber, "Inkjet printed all-polymer flexural plate wave sensors", IEEE Sensors Special Issue on Flexible Sensors and Sensing Systems, vol. 13, issue 10, pp. 4005-4013, 11/2012. Abstract Tagged XML BibTex
John Berring, Christoph Sielmann, Konrad Walus, Boris Stoeber, "VOC detection using an all polymer flexural plate wave sensor", IEEE Transducers, vol. 17, Barcelona, Spain, pp. 274-277, 06/2013. Abstract Tagged XML BibTex
Iman Mansoor, Yongliang Liu, Urs O. Häfeli, Boris Stoeber, " Arrays of hollow out-of-plane microneedles made by metal electrodeposition onto solvent cast conductive polymer structures", Journal of Micromechanics and Microengineering, 05/2013. Tagged XML BibTex
Robert Busch, Christoph Sielmann, Gabriel Man, Derek Tsan, Konrad Walus, Boris Stoeber, "Inkjet printed all-polymer flexural plate wave sensors", 25th Annual IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2012), Paris, France, 29/01/2012. Tagged XML BibTex
Anil Haraksingh Thilsted, Vahid Bazargan, Nina Piggott, Vivien Measday and Boris Stoeber, "Flow manipulation and cell immobilization for biochemical applications using thermally responsive fluids", Biomicrofluidics, 11/2012. Tagged XML BibTex
Christoph Sielmann, John Berring, Konrad Walus, Boris Stoeber, "Application of an all-polymer flexural plate wave sensor to polymer/solvent material characterization", IEEE Sensors, vol. 11, pp. 830-833, 10/2012. Abstract Tagged XML BibTex
Christoph Sielmann, Boris Stoeber, Konrad Walus, "Implications of a low stiffness substrate in lamb wave gas sensing applications", IEEE Sensors, vol. 11, pp. 5-8, 10/2012. Abstract Tagged XML BibTex
Iman Mansoor, Urs Häfeli, Boris Stoeber, "Hollow Out-of-Plane Polymer Microneedles Made by Solvent Casting for Transdermal Drug Delivery", Journal of Microelectromechanical Systems, vol. 21, issue 1: IEEE & ASME, pp. 44-52, 02/2012. Abstract Tagged XML BibTex
Reynald Hoskinson, Stefan Hampl, Boris Stoeber, "Arrays of large-area, large-angle tip/tilt micromirrors for use in a high-contrast projector", Sensors and Actuators A: Physical, vol. 173, issue 1: Elsevier, pp. 172-179, 01/2012. Abstract Tagged XML BibTex
Iman Mansoor, Urs O. Häfeli, Boris Stoeber, "Arrays of solvent cast hollow out-of-plane polymer microneedles for drug delivery", Annual IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2011), Cancun, Mexico, 23/01/2011. Tagged XML BibTex
Urs O. Häfeli, Mary H. H. Ensom, T. K. L. Kiang, Boris Stoeber, B. Chua, M. Pudek, "Comparison of Vancomycin Concentrations in Blood and Interstitial Fluid: A Possible Model for Less Invasive Therapeutic Drug Monitoring", Clinical Chemistry and Laboratory Medicine , vol. 49, issue 12: De Gruyter, pp. 2123-2125, 12/2011. Tagged XML BibTex
Jonas Flueckiger, Vahid Bazargan, Boris Stoeber, Karen Cheung, "Characterization of postfabricated parylene C coatings inside PDMS microdevices", Sensors and Actuators B: Chemical , vol. 160, issue 1: Elsevier, pp. 864-874, 12/2011. Tagged XML BibTex
Allison Schaap, Winnie C. Chu, Boris Stoeber, "Continuous size-separation of airborne particles in a microchannel for aerosol monitoring", IEEE Sensors Journal , vol. 11, issue 11: IEEE, pp. 2790-2797, 11/2011. Abstract Tagged XML BibTex
Neville Dubash, Ian A. Frigaard, Boris Stoeber, "An oscillatory instability in microchannel flows of thermally responsive fluids", Journal of Engineering Mathematics , vol. 71, issue 1, pp. 31-53, 08/2011. Abstract Tagged XML BibTex
Iman Mansoor, Boris Stoeber, "PIV measurements of flow in drying polymer solutions during solvent casting", Experiments in Fluids, vol. 50, issue 5, pp. 1409-1420, 05/2011. Abstract Tagged XML BibTex
Raghu Devendra, Boris Stoeber, German Drazer, "Microfabrication Of Anisotropic Media For Particle Separation Devices", 23rd Canadian Congress of Applied Mechanics, Vancouver, BC, Canada, 05/06/2011. Tagged XML BibTex
Silvio Dutz, Mike Hayden, Allison Schaap, Boris Stoeber, Urs O. Häfeli, "Fractionation of magnetic microspheres for magnetic drug targeting using Dean flow combined with a magnetic octupole on a chip", 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2011), Seattle, WA, U.S.A., 02/10/2011. Tagged XML BibTex
Vahid Bazargan, Boris Stoeber, "Stream formation in hydrogels: microrivers on a chip", 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2011), Seattle, WA, U.S.A., 02/10/2011. Tagged XML BibTex
Reynald Hoskinson, Boris Stoeber, Wolfgang Heidrich, Sidney Fels, "Light Reallocation for High Contrast Projection Using an Analog Micromirror Array", ACM Transactions on Graphics, vol. 29, issue 6: ACM Press, pp. art. no. 165 (10 pages), 15/12/2010. Abstract Tagged XML BibTex
Farid Khan, Farrokh Sassani, Boris Stoeber, "Copper foil-type vibration-based electromagnetic energy harvester", Journal of Micromechanics and Microengineering, vol. 20, issue 12, pp. 11, 12/2010. Abstract Tagged XML BibTex
Farid Khan, Farrokh Sassani, Boris Stoeber, "Vibration-based electromagnetic energy harvester", proceedings ASME 2010 International Mechanical Engineering Congress & Exposition , 11/2010. Tagged XML BibTex
Benjamin Mustin, Boris Stoeber, "Deposition of particles from polydisperse suspensions in microfluidic systems", Microfluidics and Nanofluidics, vol. 9, issue 4-5, pp. 905-913, 10/2010. Abstract Tagged XML BibTex
V. Bazargan, B. Stoeber, "Flow control using a thermally actuated microfluidic relay valve", Journal of Microelectromechanical Systems , vol. 19, issue 5: ASME/IEEE, pp. 1079-1087, 10/2010. Abstract Tagged XML BibTex
Allison Schaap, Winnie C. Chu, Miguel I. Antonio, Boris Stoeber, "Microchannel-based Size Detector for Airborne Particles", IEEE Sensors 2010 Conference, 1/11/2010. Tagged XML BibTex
Farid Khan, Farrokh Sassani, Boris Stoeber, "Vibration-based PDMS membrane type electromagnetic power generator for low vibration environments", Proceedings of CSME forum 2010, 06/2010. Tagged XML BibTex
Urs Hafeli, Ktayoun Saatchi, Philipp Elischer, Ripen Misri, Mehrdad Bokharaei, Renee Labiris, Boris Stoeber, "Lung Perfusion Imaging with Monosized Biodegradable Microspheres", Biomacromolecules, vol. 11, issue 3: ACS Publications, pp. 561-567, 03/2010. Tagged XML BibTex
Ramin S. Sahebjavaher, Konrad Walus, Boris Stoeber, "Permanent magnet desktop magnetic resonance imaging system with microfabricated multiturn gradient coils for microflow imaging in capillary tubes", Review of Scientific Instruments , vol. 81, issue 2: American Institute of Physics, pp. 9, 02/2010. Abstract Tagged XML BibTex
Ramin S. Sahebjavaher, Boris Stoeber, Konrad Walus, "Microfabricated multi-turn gradient coils for microscale flow imaging ", Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International , Denver, CO, USA, IEEE Conferences , pp. 1570 - 1573 , 21/06/2009. Abstract Tagged XML BibTex
U. Häfeli, A. Mokhtari, D. Liepmann, B. Stoeber, "In Vivo Evaluation of a Microneedle-Based Miniature Syringe for Intradermal Drug Delivery", Biomedical Microdevices , vol. 11, issue 5: Springer, pp. 943-950, 10/2009. Abstract Tagged XML BibTex
Gabriel Man, Boris Stoeber, Konrad Walus, "An Assessment of Sensing Technologies for the Detection of Clandestine Methamphetamine Drug Laboratories", Forensic Science International , vol. 189, issue 1-3, pp. 1-13, 09/08. Abstract Tagged XML BibTex
Raja K. Sivamani, Boris Stoeber, Dorian Liepmann, Howard I. Maibach, "Microneedle penetration and injection past the stratum corneum in humans ", Journal of Dermatological Treatment, vol. 20, issue 3, pp. 156-159, 05/2009. Abstract Tagged XML BibTex
Lance Kersey, Vincent Ebacher, Vahid Bazargan, Rizhi Wang, Boris Stoeber, "The effect of adhesion promoter on the adhesion of PDMS to different substrate materials", Lab on a Chip, vol. 9, issue 7, pp. 1002-1004, 04/2009. Abstract Tagged XML BibTex
Song, K.-Y., Chiao, M., Stoeber, B., Hafeli, U., Gupta, M. M., Zhang, W. J., "Formation of Uniform Microspheres Using a Perforated Silicon Membrane: A Preliminary Study", ASME Journal of Medical Devices, vol. 3, no. 3, pp. 034503, 2009  . Tagged XML BibTex
V. Bazargan, B. Stoeber, "Formation of temporary separating walls in microfluidic devices", the 6th ASME International Conference on Nanochannels, Microchannels, and Minichannels, Darmstadt, Germany, 23/06/2008. Abstract Tagged XML BibTex
B. Mustin, B. Stoeber, "Design considerations for robust suspension-based microfluidic systems for biomedical applications", 14th IEEE International Mixed-Signals, Sensors, and Systems Test Workshop, Vanvouver, BC, Canada, 18/06/2008. Abstract Tagged XML BibTex
R. Hoskinson, S. Hampl, B. Stoeber, "High-contrast projection technology based on an analog MEMS mirror array", TEXPO, CMC Microsystems 2008 Annual Symposium, Ottawa, Ont., Canada, 14/10/2008. Tagged XML BibTex
Vahid Bazargan, Boris Stoeber, "Moving temporary wall in microfluidic devices", Physical Review E, vol. 78, issue 6, pp. 4, 12/2008. Abstract Tagged XML BibTex
R. Hoskinson, B. Stoeber, "High-Dynamic Range Image Projection using an auxiliary MEMS mirror array", Optics Express, vol. 16, issue 10, pp. 7361-7368, 05/2008. Abstract Tagged XML BibTex
S. Hampl, D. Buescher, R. Hoskinson, B. Stoeber, "A deformable micromirror for selective illumination", 1st Pacific Northwest Microsystems and Nanotechnology Meeting (PANOMINO), Friday Harbor, WA, U.S.A., 03/09/2008. Abstract Tagged XML BibTex
Gabriel Man, Aryan Navabi, Tony Raymond, Boris Stoeber, Konrad Walus, "Polymer-Based Chemical Sensors for Clandestine Lab Detection", CMC Workshop on MEMS and Microfluidics, Montreal, Quebec, 13/08/2007. Tagged XML BibTex
Reynald Hoskinson, Iman Mansoor, Boris Stoeber, "Submirror Pixels for Large Scan Angle Micromirror Arrays", Canadian Workshop on MEMS and Microfluidics, Montreal, Quebec, 13/08/2007. Tagged XML BibTex
K. Wolf, B. Stoeber, T. Sattel, "The dynamic coupling and power flow in asymmetric piezoelectric bending actuators", Smart Materials and Structures, vol. 16, issue 6: Institute of Physics, pp. 2015-2025, 12/2007. Abstract Tagged XML BibTex
V. Bazargan, B. Stoeber, "Thermally triggered modulation of flow channel geometry and layout", MicroTAS 2007, Paris, France, 07/10/2007. Tagged XML BibTex
B. Stoeber, D. Liepmann, S.J. Muller, "Strategy for active mixing in microdevices", Physical Review E, vol. 75: Americal Physical Society, pp. 4, 06/2007. Abstract Tagged XML BibTex
R. Hoskinson, I. Mansoor, B. Stoeber, "High Mechanical Bandwidth Polysilicon Micromirrors for Large Area / High Deflection Angle Micromirror Arrays", 20th IEEE Canada CCECE 2007, Vancouver, BC, Canada, 01/04/2007. Tagged XML BibTex
B. Stoeber, C.-M. Hu, D. Liepmann, S. J. Muller, "Passive flow control in microdevices using thermally responsive polymer solutions", Physics of Fluids, vol. 18, issue 5: American Institute of Physics, pp. 9, 06/2006. Abstract Tagged XML BibTex
B. Stoeber, D. Liepmann, "Arrays of Hollow out-of-Plane Microneedles for Drug Delivery", Journal of Microelectromechanical Systems, vol. 14, issue 3: ASME/IEEE, pp. 472-479, 06/2005. Abstract Tagged XML BibTex
R. K. Sivamani, B. Stoeber, G. C. Wu, H. Zhai, D. Liepmann, H. Maibach, "Clinical microneedle injection of methyl nicotinate: stratum corneum penetration", Skin Research and Technology, vol. 11, pp. 152-156, 05/2005. Abstract Tagged XML BibTex
B. Stoeber, Z. Yang, D. Liepmann, S.J. Muller, "Flow Control in Microdevices using Thermally-Responsive Triblock Copolymers", Journal of Microelectromechanical Systems, vol. 14, issue 2: ASME/IEEE, pp. 207-213, 04/2005. Abstract Tagged XML BibTex