KEYWORDS: Electronics, Resistance, Defense and security, Detection and tracking algorithms, Thermal energy technology, Interfaces, Commercial off the shelf technology, Defense technologies, Thermoelectric materials, Gallium nitride
Thermal management technology plays a key role in the continuing miniaturization, performance improvements, and
higher reliability of electronic systems. For the past decade, and particularly, the past 4 years, the Defense Advanced
Research Projects Agency (DARPA) has aggressively pursued the application of micro- and nano-technology to reduce
or remove thermal constraints on the performance of defense electronic systems. The DARPA Thermal Management
Technologies (TMT) portfolio is comprised of five technical thrust areas: Thermal Ground Plane (TGP),
Microtechnologies for Air-Cooled Exchangers (MACE), NanoThermal Interfaces (NTI), Active Cooling Modules
(ACM), and Near Junction Thermal Transport (NJTT). An overview of the TMT program will be presented with
emphasis on the goals and status of these efforts relative to the current State-of-the-Art. The presentation will close with
future challenges and opportunities in the thermal management of defense electronics.
True nanotechnology, defined as the ability to reliably and repeatably fabricate nanostructures with controlled
differences in size, shape, and orientation at precise substrate locations, currently does not exist. There are many
examples demonstrating the capability to grow, deposit, and manipulate nanometer-sized features, but typically these
techniques do not allow for controllable manufacturing of individual structures. To bridge this gap and to unlock the true
potential of nanotechnology for defense sensing applications, the Defense Advanced Research Projects Agency
(DARPA) launched the Tip-Based Nanofabrication (TBN) research program with the intent of achieving controlled
manufacturing of nanostructures using functionalized AFM cantilevers and tips. This work describes the background,
goals, and recent advances achieved during the multi-year TBN program.
In order to unlock the true potential of nanotechnology, the development of controlled nanomanufacturing techniques for
individual structures is critical. While the capability to grow, deposit, and manipulate nanostructures currently exists, the
ability to reliably fabricate these devices with controlled differences in size, shape, and orientation at various substrate
positions does not exist. To bridge this gap, the Defense Advanced Research Projects Agency (DARPA) launched the
Tip-Based Nanofabrication (TBN) research program with the intent of achieving controlled nanomanufacturing of
nanowires, nanotubes and quantum dots using functionalized AFM cantilevers and tips. This work describes the
background, goals, and current approaches being explored during the multi-year TBN program.
A polymer based biochip for rapid 2-D separations of peptides, proteins, and other biomedically relevant molecules was
designed and fabricated. Like traditional 2D polyacrylamide gel electrophoresis (2D-PAGE) methods, the device will
allow molecules to separate based on isoelectric point (pI) and molecular weight (MW). The design, however, integrates
both an initial capillary isoelectric focusing (cIEF) step followed by capillary electrophoresis (CE) in multiple parallel
channels, all on a single microfluidic chip. Not only is the "lab-on-a-chip" design easier to use and less expensive, but
the miniaturization of the device produces very rapid separations, on the order of seconds. Fluorescence detection will
be used in the preliminary stages of testing, but the device is also equipped with integrated electrodes in the
electrophoresis channels to perform multiplexed electrochemical detection for quantitative analysis. We present the chip
design and fabrication, as well as the initial test results demonstrating cIEF and CE with one analyte. Furthermore, we
introduce preliminary work on the use of a polyacrylamide gel in the electrophoresis channels.
A polymer based biochip for rapid 2D separations of peptides, proteins, and other biomedically relevant molecules was designed and fabricated. Like traditional 2D polyacrylamide gel electrophoresis (2D-PAGE) methods, the device will allow molecules to separate based on isoelectric point (pI) and molecular weight (MW). Our design, however, integrates both an initial capillary isoelectric focusing (cIEF) step followed by capillary electrophoresis (CE) in multiple parallel channels, all on a single microfluidic chip. Not only is the "lab-on-a-chip" design easier to use and less expensive, but the miniaturization of the device produces very rapid separations. Compared to traditional 2D-PAGE, which can take hours to complete, we estimate separation times on the order of seconds. Fluorescence detection will be used in the preliminary stages of testing, but the device also is equipped with integrated electrodes in the electrophoresis channels to perform multiplexed electrochemical detection for quantitative analysis. We will present preliminary results of the chip development and testing.
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