Technologies
Sub Categories
Engineering
Civil
infrastructure is the foundation of our society and has a widespread impact on
the quality of our daily lives.
Monitoring the safety and functionality of the world’s buildings,
bridges, and lifeline systems, is critical to improving maintenance practices,
minimizing the cost associated with repair and ultimately improving public
safety. Structural health monitoring
(SHM) systems provide a way for engineers to determine the overall health of a
given structure. SHM systems have the
ability to detect real-time damage or potential failure due to outside events,
This technology provides a method using standard,
inexpensive components and software, in an elegantly simple configuration, to generate
ultra-short laser pulses of a quality currently available only from complex,
costly systems, such as the Ti:Sapphire laser.
Ultra-short laser pulses, shorter than 10 - 15 femtoseconds, are used in
many applications including: multiphoton microscopy, coherent anti-Stokes Raman
spectroscopy, and femtochemistry. At
this time, such precision ultra-short pulse lasers are largely cost prohibitive
in many applications, relatively difficult and
The ability
to print a polarized electrical charge onto a medium, or charge patterning, is
currently in the early stages of development.
A similar technology commonly used in office printers, Xerography,
thrives in large size regimes. There
exist only a few competitive technologies capable of printing at the nanometer
scale. Current technologies use
processes that provide only low resolutions and relatively poor control over
the printed charges. For example,
current atomic force microscopy probes can provide suitable charges, but are
only able f
Nano patterning, the ability to create nanometer scale features on a solid surface, has great potential as an energy-efficient approach in manufacturing. Solid state ionic conductors offer this possibility by exploiting highly localized electrochemical reactions at the point of contact between the conductor and a metal substrate. Metal ions migrate through the bulk of the ionic conductor toward the counter electrode under the influence of an electrical bias between an ionic conductor (stamp) and a metal surface (anode).
Various high aspect ratio semiconductor 3D nanostructures have begun to have profound effect on the design and performances of many types of devices, including batteries, solar cells, detectors and thermoelectrical systems. Photolithography is typically used for the fabrication of these nanostructures, which is an extremely expensive technique, especially for large area applications.
Optical communications have become a main method of high-speed data transmission and are at the forefro
Plasma-based electronic devices assumed a significant role in communications and d
In flight control and other critical control systems, robust control is often augmented by gain scheduling to provide slowly adaptive robust behavior across varying operating conditions. Even with the benefit of gain scheduling, however, robust control is unable to provide performance guarantees under conditions outside the preconfigured set of parameters. Furthermore, because developing a gain-scheduled controller requires developing and linking several independent controllers, the development process is
This vector is a six element vector antenna (SEVA).