Self-Healing Materials
A New Material-Science Breakthrough
Today's construction materials corrode or just disintegrate over time. Infrastructure built with these materials eventually need repair or replacement.
New self-healing materials can repair their own structures without human intervention.
Electron Microscope Image
Georgia Institute of Technology
Microfiber Nanogenerator
Under the direction of Professor Zhong Lin Wang a group at the Georgia Institute of Technology developed paired nano textile fibers that convert physical movement into electricity. The individual fibers are microscopic in size. (See Photo 1.) But when you weave enough of them together you create a microfiber nanogenerator that looks like thick threads.
Lawrence Livermore National Laboratory
Nanotube Breakthrough
A nanotube membrane breakthrough that might soon provide an inexpensive technology that can be used to acquire fresh water from sea water.
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It is difficult staying ahead of counterfeiters because the equipment needed to produce security tagging keeps dropping in price. This month’s column describes the newest security tagging systems. The first one is infinitesimally small barcodes that are only as long as a human hair is wide. Photo 1 is an exaggeration because without super magnification they are invisible.
The second new anti-counterfeiting system is an invisible watermark designer label that shows up when it is hit with warm moist air. Imagine because of this new technology you can huff and puff and blow the counterfeiters dream of stealing your money away.
Foiling the Counterfeiters
Nineteen years ago I described the best that the 20th century had to offer to keep U.S. currency safe. This thumbnail will can take you back to December 1995.
Foiling the Counterfeiters
By Alan J. Pierce EdD
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