Book Chapter
  1. M. Maharbiz, R. Borno, M. Lam, and T. Galchev, “Chapter 12. Implantable and Non-implantable NanoBiosystems,” in NNIN Nanotechnology Open Source Textbook, K. Najafi, Editor, 2006, (45 pages) http://www.nano.umn.edu/assets/pdf/textbook/.
Refereed Journal Publications
  1. J. McCullagh,T. Galchev, R. L. Peterson, R. Gordenker, Y. Zhang, J. Lynch, and K. Najafi, "Long- term testing of a vibration harvesting system for the structural health monitoring of bridges," in Sensors & Actuators A: Physical, vol. 217, p. 139-150, 2014.
  2. T. Galchev, W. C. Welch III, and K. Najafi, ”A new low temperature high aspect-ratio MEMS process using plasma activated wafer bonding,” in IOP Journal of Micromechanics and Microengineering, vol. 21, p. 045020, 2011.
  3. T. Galchev, H. Kim, and K. Najafi, ”Micro power generator for harvesting low-frequency and non-periodic vibrations,” in IEEE/ASME Journal of Microelectromechanical Systems, vol. 20, p. 852-866, 2011.
  4. T. Galchev, J. McCullagh, R.L. Peterson, and K. Najafi, ”Harvesting traffic-induced vibrations for structural health monitoring of bridges,” in IOP Journal of Micromechanics and Microengineering, vol. 21, p. 104005(13), 2011.
  5. T. Galchev, E. E. Aktakka, and K. Najafi, ”A piezoelectric Parametric Frequency Increased Generator for harvesting low-frequency vibrations,”in IEEE/ASME Journal of Microelectromechanical Systems, vol 21, p. 1311-1320, 2012.
Refereed Conference Publications
  1. F. Pothof, M. Patel, T. Galchev, O. Paul, and P. Ruther, "128-Channel deep brain recording probe with heterogeneously integrated analog CMOS readout for focal epilepsy localization," in proceedings of the 18th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Anchorage, 2015. (accepted)
  2. A. Herbawi, T. Galchev, F. Larramendy, T. Holzhammer, O. Paul, and P. Ruther, "CMOS-based neural probe with enhanced electronic depth control," in proceedings of the 18th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Anchorage, 2015. (accepted)
  3. A. E. Aguayo, O. Paul, T. Galchev, "Integrated synchronous electric charge extraction system for piezoelectric energy harvesters," in proceedings of the IEEE Symposium on Circuits and Systems (ISCAS), Lisbon, 2015. (accepted)
  4. O. Paul, T. Galchev, A. Herbawi, F. Larramendy, and P. Ruther, "Active Neural Probes in CMOS Technology with Dense Electrode Arrangement for High-resolution Intracerebral Recording," in proceedings of the 48th Annual Conference of the German Society of Biomedical Engineering, Hannover, 2014.
  5. T. Galchev, D. Barutçu, and O. Paul, " A gap-varying electrostatic transducer utilizing ferrofluid-based actuation for motion harvesting," in proceedings of the International Conference on Micro Electro Mechanical Systems (IEEE MEMS), San Francisco, USA, p. 350-353, January 2014.
  6. A. Herbawi, O. Paul, and T. Galchev, ”An ultra-low-power active AC-DC CMOS converter for sub-1V integrated energy harvesting applications,” in proceedings of the IEEE Sensors Conference, Baltimore, USA, p. 1912-1915, November 2013.
  7. T. Galchev, R. Raz, and O. Paul, ”An electrostatic springless inertial harvester for converting multi-dimensional low-frequency motion,” in proceedings of the International Conference on Micro Electro Mechanical Systems (IEEE MEMS), Taipei, Taiwan, p. 102-105, January 2013.
  8. T. Galchev, R. Raz, and O. Paul, ”A new multi-dimensional low-frequency springless proximity inertial harvester for converting human and environmental motion,” in proceedings of the PowerMEMS 2012 Workshop, Atlanta, USA, p. 117-120, December 2012.
  9. J. McCullagh, R.L. Peterson,T. Galchev, R. Gordenker, Y. Zhang, J. Lynch, and K. Najafi, ” Short-term and long-term testing of a vibration harvesting system for bridge health monitoring,” in proceedings of the PowerMEMS 2012 Workshop, Atlanta, USA, p. 109-112, December 2012. Best Student Paper Award.
  10. K. Najafi, T. Galchev, E. E. Aktakka, R.L. Peterson, and J. McCullagh , ”Microsystems for Energy Harvesting,” in proceedings of the 16th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Beijing, China, p.1845-1850, June 2011. (invited paper)
  11. T. Galchev, J. McCullagh, R.L. Peterson, and K. Najafi, ”Harvesting Traffic Induced Bridge Vibrations,” in proceedings of the 16th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Beijing, China, p.1661-1664 June 2011.
  12. T. Galchev, J. McCullagh, R.L. Peterson, K. Najafi, and A. Mortazawi, ”Energy Harvesting of Radio Frequency and Vibration Energy to Enable Wireless Sensor Monitoring of Civil Infrastructure,” in proceedings of the SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security, San Diego, CA, 798314, March 2011.
  13. T. Galchev, J. McCullagh, R.L. Peterson, and K. Najafi, ”A Vibration Harvesting System for Bridge Health Monitoring Applications,” in proceedings of the PowerMEMS 2010 Workshop, Leuven, Belgium, p. 179-182, December 2010.
  14. T. Galchev, J. McCullagh, E. E. Aktakka, R.L. Peterson, and K. Najafi, ”Energy Harvesting from Low Frequency and Arbitrary Vibrations,” High Efficiency Energy Conversion, Energy Management, and Low Power Systems for Aerospace/Military Electronics Workshop, Redstone Arsenal, Al, September 2010.
  15. M. Kurata, J.P. Lynch, T. Galchev, M.P. Flynn, P. Hipley, V. Jacob, G. van der Linden, A. Mortazawi, K. Najafi, R.L. Peterson, L.-H. Sheng, D. Sylvester, E. Thometz, "Two-Tiered Self-Powered Wireless Monitoring System Architecture for Bridge Health Management," in proceedings of the SPIE. 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security, San Diego, CA, 76490K, March 2010.
  16. T. Galchev, E. Aktakka, H. Kim, and K. Najafi, ”A Piezoelectric Frequency-Increased Power Generator for Scavenging Low-Frequency Ambient Vibration,” in proceedings of the International Conference on Micro Electro Mechanical Systems (IEEE MEMS), Hong Kong, China, p. 1203-1206, January 2010
  17. T. Galchev, H. Kim, and K. Najafi, ”A Parametric Frequency Increased Power Generator for Scavenging Low-Frequency Ambient Vibrations,” in proceedings of the Eurosensors XXIII Conference, Lausanne, CH, p.1439–1442, September 2009.
  18. T. Galchev, H. Kim, and K. Najafi, “Non-Resonant Bi-Stable Frequency-Increased Power Generator for Low-Frequency Ambient Vibration,” in proceedings of the 15th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Denver, Colorado, p. 632-635, June 2009.
  19. E. Romero, T. Galchev, E. Aktakka, N. Ghafouri, M. Neuman, R. Warrington, H. Kim, and K. Najafi, “Micro Energy Harvesters,” in proceedings of the 13thsup> International Commercialization of Micro and Nano Systems Conference, Puerto Vallarta, Mexico, September 2008. Best Paper Award.
  20. T. Galchev, W. C. Welch III, and K. Najafi, "Low-Temperature MEMS Process Using Plasma Activated Silicon-On-Silicon (SOS) Bonding," in proceedings of the International Conference on Micro Electro Mechanical Systems (IEEE MEMS), Kobe, Japan, p. 309-312, January 2007.
  21. T. Galchev, W. C. Welch III, and K. Najafi, "Silicon-On-Silicon (SOS): A New CMOS Compatible Low-Temperature MEMS Process Using Plasma Activated Fusion Bonding," in proceedings of the Solid State Sensor, Actuator and Microsystems Workshop (Hilton Head), Hilton Head, SC, p. 100-102, June 2006.
Patents
  1. T. Galchev, H. Kim, K. Najafi “Increased Frequency Power Generation Using Low Frequency Ambient Vibrations” US Patent Application No: US 7935-3015-1
Seminars and Presentations
  1. T. Galchev, "An electrostatic springless inertial harvester for converting multi-dimensional low-frequency motion,” IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS), Taipei, Taiwan, January 2013. (Upcoming)
  2. T. Galchev, "A new multi-dimensional low-frequency springless proximity inertial harvester for converting human and environmental motion,” PowerMEMS 2012, Atlanta, USA, December 2012.
  3. T. Galchev, "Status of Mechanical Energy Harvesters and Developments In Converting Non-Periodic Vibrations ,” Nano and Micro Systems (NAMIS) International Autumn School, Tokyo, Japan, September 2012. Invited Talk
  4. T. Galchev, "Harvesting energy from human motion and the environment,” Alexander von Humboldt Network Meeting, Aachen, Germany, April 2012. Invited Talk
  5. T. Galchev, "Energy harvesting of radio frequency and vibration energy to enable wireless sensor monitoring of civil infrastructure,” SPIE Smart Structures/NDE, San Diego, California, March 2011.
  6. T. Galchev, "Status of Mechanical Energy Harvesters and Developments In Converting Non-Periodic Vibrations,” ETH Zurich, Zurich, Switzerland, December 2010. Invited Talk
  7. T. Galchev, "Harvesting Low-Frequency and Non-Periodic Vibrations for Infrastructure Health Monitoring and Other Environmental Sensing,” University of Freiburg Institut für Mikrosystemtechnik (IMTEK), Freiburg, Germany, December 2010. Invited Talk
  8. T. Galchev, "A Vibration Harvesting System for Bridge Health Monitoring Applications,” PowerMEMS 2010, Leuven, Belgium, December 2010.
  9. T. Galchev, "Energy Harvesting from Arbitrary Vibrations,” General Dynamics, Sterling Heights, Michigan, October 2010. Invited Talk
  10. T. Galchev, "Energy Harvesting from Low Frequency and Arbitrary Vibrations,” High Efficiency Energy Conversion, Energy Management, and Low Power Systems for Aerospace/Military Electronics Workshop, Redstone Arsenal, Al, September 2010.
  11. T. Galchev, “Scavenging Energy From Low Frequency and Arbitrary Vibrations,” Sensors Expo, Rosemont, Illinois, June 2010. Invited Talk
  12. T. Galchev, “A Parametric Frequency Increased Power Generator for Scavenging Low-Frequency Ambient Vibrations,” U. of Michigan College of Engineering Graduate Symposium, Ann Arbor, MI, November 2009. Invited Talk
  13. T. Galchev, “MEMS-Based Energy Scavenging From Ambient Vibrations,” Sandia National Laboratories, Albuquerque, NM, October 2009. Invited Talk
  14. T. Galchev, ”A Parametric Frequency Increased Power Generator for Scavenging Low-Frequency Ambient Vibrations,” Eurosensors XXIII, Lausanne, CH, September 2009.
  15. T. Galchev, “Non-Resonant Bi-Stable Frequency-Increased Power Generator for Low-Frequency Ambient Vibration,” 15th International Conference on Solid-State Sensors, Actuators, and Microsystems (IEEE TRANSDUCERS), Denver, Colorado, June 2009.
  16. T. Galchev, "Silicon-On-Silicon (SOS): A New CMOS Compatible Low-Temperature MEMS Process Using Plasma Activated Fusion Bonding," Solid State Sensor, Actuator and Microsystems Workshop (Hilton Head), Hilton Head, SC, June 2006.