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Printed Manufacturing Lab
Dispenser-Printed Energy Scavenging and Energy Storage Group
Our lab is located in the Department of Materials Science and Engineering (Hearst Memorial Mining Building) of UC Berkeley on the first floor in room 130D.
Printer Group Internal Website: http://bmi.berkeley.edu/printer
This group’s primary research revolves around direct write dispenser printing of micro-devices for both thermal energy scavenging and electrochemical energy storage. Direct write dispenser-printing technology is a versatile and scalable manufacturing technique for additive deposition of novel materials. It allows for on-demand patterning of materials at room temperature and ambient conditions. As a consequence, negligible materials waste is generated, and minimal energy expenditure is required for the operation of this process, leaving a small environmental footprint. Ink is extruded from a syringe needle directly onto a substrate in an additive fashion by pneumatic control. A large range of functional materials can be dispenser printed onto a variety of substrates including printed circuit boards (PCB), glass slides and silicon wafers.
Our lab has developed a prototype direct write dispenser printer which has been used for thermoelectric, electrochemical storage, MEMS AC current sensing and vibrational energy harvesting applications. We focus on both the development of novel printable materials for energy applications and the rapid fabrication of ensuing devices. We also have equipment for the characterization of electrochemical and thermoelectric properties.
Video of Dispenser Printing
The chemical wet lab in room 130D HMMB for development of novel printed materials
Image & schematic of the prototyping dispenser-printer
- Wang, Z., A. Chen, R. Winslow, D. Madan, R.C. Juang, M. Nill, J.W. Evans, P.K. Wright (2012). "Integration of dispenser-printed ultra-low-voltage thermoelectric and energy storage devices" Journal of Micromech. & Microeng., Vol. 22 (9), 094001. [Link]
- Madan, D., A. Chen, R.C. Juang, P.K. Wright, J.W. Evans (2012). “Printed Se doped M.A. n-type Bi2Te3 Thick Film Thermoelectric Generators” Journal of Electronic Materials, DOI: 10.1007/s11664-011-1885-5. [Link]
- Chen, A., D. Madan, P.K. Wright, J.W. Evans (2011). “Dispenser-printing Planar Thick-film Thermoelectric Generators” Journal of Micromech. & Microeng., Vol. 21 (10), 104006. [Link]
- Madan, D., A. Chen, P.K. Wright, J.W. Evans (2011). “Dispenser Printed Composite Thermoelectric Thick Films for Thermoelectric Generator Applications.” Journal of Applied Physics, Vol. 108, 034904. [Link]
- Miller, L.M., A. Chen, P.K. Wright, J.W. Evans (2010). “Resonance Frequency Customization for MEMS Vibration Energy Harvesters Using Dispenser Printed Proof Mass” Proceedings of PowerMEMS 2010 (Leuven, Belgium, 1-3 December 2010), pp. 411-414.
- "She paints for Power", Innovations - UC Berkeley, Vol. 4, Issue 8.[Link]
- Wright, P., D.A. Dornfeld, A. Chen, C.C. Ho, J.W. Evans (2010). “Dispenser Printing for Prototyping Microscale Devices.” Transactions of NAMRI/SME, Vol. 38, pp. 555-561.
- Ho, C.C., J.W. Evans, P.K. Wright (2010) “Direct write dispenser printing of a zinc microbattery with an ionic liquid gel electrolyte.” Journal of Micromechanics and Microengineering, Vol. 20, 104009. [Link]
- Leland, E.S, P.K. Wright, and R.W. White (2009) “A MEMS AC current sensor for residential and commercial electricity end-use monitoring.” Journal of Micromechanics and Microengineering, Vol. 19, pp. 094018 (6pp) [Link]
- Ho, C.C., D.A. Steingart, J.W. Evans, P.K. Wright (2008). “Tailoring Electrochemical Capacitor Energy Storage Using Direct Write Dispenser Printing.” ECS Transactions, Vol. 16 (1), pp. 35-47.