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Micro-Electro-Mechanical Systems 

Our research in this area includes:

  • polymer-based photovoltaic technology
  • bio-nanoelectronics
  • emerging technologies in inertial sensors (applications in cell phone, navigation systems, and image stabilization)
  • microfluidics
  • computational sciences (modeling multi-physics and reaction engineering in life sciences and electrochemical systems)

Our group collaborates with researchers at SDSU and other national MEMS laboratories. We also have an active international program involving seminars and joint research.

 

Presenting in the MEMS Lab
Student presenting her findings in the MEMS Lab

 

Polymer Solar Cells

Using a hybrid bottom-up and top-down micro- & nano-fabrication approach, we are developing a new generation of polymer-based solar cells and Organic Light Emitting Diodes (OLED) with new electrode materials and architecture. The group also uses computational photovoltaics to develop new insight and fundamental understanding of interfacial issues between photoactive layers and electrode materials. Our work in this area has been patented and licensed to a company.

 

Bio-Nanoelectronics

This group is investigating the feasibility and long-term stability of bio-nanoelectronics architecture based on our existing microarray platform. The architecture comprises of DNA molecular wires and interconnects attached to carbon/graphite microelectrodes. The boarder impact of this study is in developing nanoscale modulation of electrochemistry and electric-fields that will form the basis for advancing our knowledge in large-scale bio-nanoelectronics as well as electrochemistry and electrostatics at a sub-micron-scale.

 

Inertial Sensors

We are working on novel tunable 2-axis and 3-axis MEMS accelerometers & gyroscopes. An ongoing research project has a wide application in cell phones, gaming, energy harvesting, and image stabilization. In a collaborative work with faculty in the Mathematics Department, we are looking at the coupling of gyros and accelerometers for better performance, particularly a reduction in phase drift.

 

Microfluidics

Our laboratory has extensive experience in microfludics research with particular focus on developing microfluidic platforms for pumping, valving, particle sorting, and dispensing mechanisms as well as fundamental research in numerical modeling of such systems. An active research area that has resulted in a number of publications is in developing new magneto-hydrodynamic (MHD) micropump designs with bubble-isolating micro-channels and high-efficiency stacked centrifugal micropumps.

 

Computational MEMS

We have a very active research group in computational electrochemistry for micro- and nano-electrochemical systems, and computational photovoltaics to drive our experimental work in organic PV technology. Our work in electrochemistry of micron- and sub-micron systems (microarrays, DNA/Microfluidic chips) has resulted in a number of publications. Results include the first hybridization model in electronically active microarrays and models for the effect of protonation of buffers in promoting DNA hybridization in a narrow pH window.

As one of the collaborative efforts via the recently funded Engineering Research Center, we are working on the design and fabrication of a single crystal piezoelectric PMN-PT based diaphragm for ultrasonic power transmission. The material has a large piezoelectric coefficient and a low dielectric loss compared to conventional piezoelectric materials. One of the present trends in that discipline is making smaller and higher efficiency wireless power transmission devices. Our research will be focused on developing a small PMN-PT single crystal diaphragm with arrays of micro interdigitated electrodes to enhance efficiency of power conversion. We will achieve the research goals through lithography equipment and sponsored research.

Clean Room in the MEMS Lab 

Clean Room in the MEMS Lab at SDSU

Students working in the Clean Room

Students working on their research in the Clean Room 

Lab assistants working next to the clean room 

Lab assistants working next to the clean room

Smart Health Institute

SDSU awarded $10M NIH grant

ME Professor, Dr. Kee Moon is one of the PIs on a $10M NIH award entitled "Building Capacity and Infrastructue for Population Health and Health Disparities Research at San Diego State University".

1000 publications

1000+ Scientific Publications by SDSU Professor

Congratulations to Dr. Randall German, ME Professor, for exceeding the milestone of 1,000 scientific publications in powder-based materials and sintering, including 16 books. He is currently the most cited author in his field.

Olevsky-Multi-Layer-Sintering

Modeling Sintering Anisotropy

Dr. Eugene Olevsky has received a $630k NSF award to conduct a multi-scale fundamental investigation of sintering anisotropy.

This conceptual schematic shows a small particle solar receiver.

Concentrating Solar Power SunShot Research Award

Dr. Fletcher Miller is the PI on a $3.8M DoE grant for developing a Small-Particle Solar Receiver for High-Temperature Brayton Power Cycles.

Brain Picture

$18M NSF Engineering Research Center

PDF file: download Adobe Acrobat Reader

Dr. Kee Moon leads SDSU's efforts in the NSF Engineering Research Center for Sensorimotor Neural Engineering. Partner Universities include UW and MIT.

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Department of Mechanical Engineering Job Opportunities

  

  • Part-Time Faculty (Lecturer) 
  • Instructional Student Assistant
  • Graduate Assistant
  • Teaching Associate