Documents / Report
This Defense Intelligence Agency reference document, dated 31 March 2010 (DIA-08-1003-020), was one of a series of advanced technology reports produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) program. It surveys biosensors and BioMEMS, covering brain-implanted neuroelectrodes, drug-delivery pumps, implantable glucose sensors, brain-machine interfaces, retinal prostheses, microfluidic lab chips, NASA cell culture systems, and microcantilever sensors. It concludes that the field is expanding rapidly toward nanomechanical systems.
“University of Arizona”7 pages
UNCLASSIFIED/ ,'F811. 8FFilii,tde l!l!ii! 8111!!¥ The Neural Probe chip enables precise bi-directional positioning of the microelectrodes in the brain with a step resolution in the order of 8.8 μm. The thermal microactuators allow for a movement of the microelectrodes of up to 5 mm in either direction making it suitable for positioning microelectrodes in deep structures of a rodent brain. The rest of the mechanism converts an oscillatory motion to a linear motion through a ratchet-type configuration. Figure 3 illustrates the basic unit where there are two comb- like arrays on either side. These generate the actual force. They are connected to a cross piece that converts oscillatory motion in concert with a spring to a pulsatile linear motion of the vertical shaft. This connects to some gears which do a mechanical transformation. • ',._,I -.., ,' ,, ' • ' - Figure 2. Functional MEMS Micromachines Attached to Sensing Bioelectrodes. The gears have features as small as 50 microns, less than the size of a period on a printed page. (Courtesy of Dr. J. Muthuswamy, Bioengineering Department, ASU) 5 I'\ ........ Figure 3. Schematic Diagram of a MEMS Motor Complete With a Method of Converting Oscillatory Motion to Linear Motion. (Courtesy of Dr. J. Muthuswamy, Bioengineering Department, ASU) UNCLASSIFIED/ ,era~ 8FFI@Itllt ~:!II!! 8HLY
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 45 pages are in the text index: search them above, or from the library's search.