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This Defense Intelligence Reference Document, dated 31 March 2010 and numbered DIA-08-1003-020, was prepared by the Defense Intelligence Agency's Defense Warning Office under its Advanced Aerospace Weapon System Applications Program. It surveys biosensors and biomedical microelectromechanical systems, covering brain-implanted micromachine neuroelectrodes, drug-delivery pumps, glucose sensors, neural interfaces, retinal prostheses, microfluidic lab chips, NASA cell-culture systems and microcantilever sensors. It concludes that the field is expanding rapidly, with nanomechanical systems expected to follow.
From the source: Release of 2026-09-18 Incident: 3/31/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD surveys biosensors and BioMEMS, a broad class of miniature biomedical devices that combine microscale engineering with sensing, fluid handling, stimulation, or drug-delivery functions. The report reviews major application areas including implantable blood-chemistry sensors, neural interfaces, neurostimulation, drug-delivery pumps, microfluidic systems, and emerging nanoscale extensions of the field, while emphasizing that miniaturization can improve sensitivity and enable functions that are difficult or impossible at larger scales. However, it also makes clear that practical development is constrained by biocompatibility, long-term stability, sensor drift, device degradation inside the body, and the high regulatory burden associated with implantable medical systems. The document presents BioMEMS as a rapidly growing and productive field whose future advances are likely to come through continued improvements in fabrication, materials, and reliability.
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What is BioM EMS?
BioMEMS stands for biomedical micro-_glectro-mechanical ~ystems. It is a name applied
to biological and medical devices that are created using advanced fabrication processes
that allow the devices to be very small relative to comparable devices produced by
traditional techniques. BioMEMS devices can also exploit the microscale to provide new
functions that are not practical or possible in large-scale devices.
The name applies to an exceptionally wide variety of engineered devices that derive
from electrical, mechanical, chemical, and molecular engineering. The name
distinguishes these from nanoMEMS which are submicron in scale such as carbon
nanotube structures.
Recently BioMEMS has become something of a misnomer as many of the latest
technologies are being designed and developed based on nanoscale technologies which
are many times smaller than microscale technologies. While current devices are
manufactured mostly on the microscale, many of the functioning parts and the
materials they operate on are at the nanoscale level.
NanoMEMS for biomedical applications are mostly carbon-based materials that have
emerged as prime materials because of their favorable mechanical and electrical
properties. Carbon-based nanostructures such as graphene exhibit a hig h Young's
modulus (stiffness), high strength, low density, low friction and large surface area. The
low friction of a carbon nanotube allows production of practically frictionless bearings
and has thus been a huge motivation towards applications such as nanomotors. Carbon
nanostructures are much stronger than steel, which allows carbon-based materials to
meet high-stress demands in biomedical applications such as weight-bearing
prosthetics (like hip-joint or bone replacements), where other materials would fail.
The field of BioMEMS encompasses micro devices that are often but not exclusively
made by the same photolithographic techniques used to make computer chips. Their
applications include neuroprosthetics, sensors and actuators, and microchemistry
systems. A microchemistry system, often called a lab on a chip, can analyze chemical
properties of a very small quantity of material such as a tiny blood sample. Advanced
systems can perform several tests on the sample at one time.
There are also drug-delivery systems, miniature hearing aids, artificial retinas, DNA
analysis systems, cancer diagnostics, and an amazing variety of devices which support
the function of the human body. Figure 1 shows some devices that were developed by
the faculty of Biomedical Engineering at Arizona State University.
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1 Not linked to a story yet.
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 45 pages are in the text index: search them above, or from the library's search.