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Isogrid Membranes for Precise, Singly Curved Reflectors

Reinforcing meshes of fibers would prevent wrinkles and ripples. A new type of composite material has been proposed for membranes that would constitute the reflective surfaces of planned lightweight, single curvature (e.g., parabolic cylindrical) reflectors for some radar and radio communication systems. The proposed composite materials would consist of polyimide membranes containing embedded grids of high strength (e.g., carbon) fibers. The purpose of the fiber reinforcements, as explained in more detail below, is to prevent wrinkling or rippling of the membrane.

Posted in: Materials, Briefs

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Photocatalytic Coats in Glass Drinking-Water Bottles

According to a proposal, the insides of glass bottles used to store drinking water would be coated with films consisting of or containing TiO2. In the presence of ultraviolet light, these films would help to remove bacteria, viruses, and trace organic contaminants from the water.

Posted in: Materials, Briefs

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How Much Financing Does Your Growing Company Need?

How much money will your growing company need? The answer is, you want enough investment to grow the company to its potential, yet do not want to over-fund, giving up too much equity. You cannot raise funds without a reasonable estimate of what you need.

Posted in: Articles

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Building the Financials to Get Investors Interested

In our last article, we planned out the business chronologically; that is, what we expected to happen and when we thought it would happen. Now, we need to assign costs to the steps in that series of events and roll it up into a standard financial picture that investors, members of your board, employees, and others will understand.

Posted in: Articles

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NASA Studies Benefits of Exercise for Astronauts and Public

The 20-G Centrifuge facility at NASA Ames has a radius of 29 feet and is human-rated to 12.5 G. (NASA)NASA's Ames Research Center in California has teamed with the University of Kentucky in Lexington and Vanderbilt University in Nashville, TN, to study ways to reduce adverse effects of space travel on an astronaut’s health. The study is being done on the 20-G Centrifuge at Ames, a machine that creates artificial gravity forces by spinning, and that can simulate up to 20 times the normal forces of gravity experienced on Earth.

Posted in: UpFront

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30 Years of Electronics & Semiconductors

In celebration of the 30th Anniversary of NASA Tech Briefs, our features in 2006 highlight a different technology category each month, tracing the past 30 years of the technology, and continuing with a glimpse into the future of where the technology is headed. Along the way, we include insights from industry leaders on the past, present, and future of each technology. This month, we take a look at the past 30 years of Electronics & Semiconductors.

Posted in: Articles

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Diagnostic and Sorting Technologies

Agrotechnology & Food Innovations BV This non-invasive technology enables accurate plant quality assessments before any physiological change is perceived by the naked eye. Plants, and plant parts, can be assessed at any stage of growth. The technology is based on chlorophyll fluorescence, highly correlated to desired plant qualities. Stems, leaves, fruits, berries, and ears may be assessed — the technology is useful in the hothouse, field, or grocery store. Any plant with chlorophyll can be tested for seed vigor, germination, good growth, and freshness. Impacts from drought, herbicides, and insects are easily detectable long before becoming visible. Screening spot measurements can be done, or more general measurements performed, with an imaging detector on an area roughly 1 x 1.5 m.

Posted in: Techs for License

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