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Pentagon intrigued by breakthrough in cloaking technology
Army Times
An academic says he and his colleagues have demonstrated a major breakthrough in the quest for invisibility, and he has the military’s attention. Boubacar Kante, a professor at the University of California-San Diego, and his colleagues tested the first effective "dielectric metasurface cloak." That's a fancy way of describing a super-thin, non-metal material that manipulates electromagnetic waves, including visible light and radio waves.

Ultrathin elastic sheets wrap around liquid drops
By studying how thin elastic sheets wrap themselves around a liquid droplet, researchers at the University of Massachusetts Amherst in the US have discovered that the “wrappers” try to enclose the maximum amount of liquid in a fixed area of sheet. The effect is rather like making samosas or calzones, where we try to stuff the maximum amount of food filling inside a circle of dough, which leads to their characteristic triangular or half-moon shapes. The advance could come in useful in applications where a liquid cargo needs to be protected inside a solid barrier – for example when the liquid is corrosive, toxic or simply delicate.

Defense mechanism
Engineer Live
One of the biggest challenges posed when designing a wearable device lies in the environment where the technology will primarily be used. For example, a temperature sensor on a static device will have to withstand temperatures within that environment and any thermal shock or cycling that may take place. Effective protection can be provided in the form of encapsulation resins or conformal coatings but with so many potential applications, this can also generate another challenge in selecting the most suitable protection compound.

New promise seen in heat-trapping solar technologies
The San Diego Union-Tribune
The U.S is pumping new research funds into heat-storing solar technologies that have so far taken a back seat to solar cells that convert sunlight directly into electricity. Unlike the "PV" panels commonly used on rooftop solar arrays, heat-trapping "concentrating" solar technologies offer the potential for on-demand power -- in some cases, even after nightfall.


Alumina Coated Evaporation Sources
The R. D. Mathis Company offers alumina coated sources for some specific coating applications. The advantage of this type of source is good thermal transfer and the inertness of alumina with most metals.

Also, the evaporant does not wet the alumina which eliminates resistance changes in the boat when the evaporant melts. Due to the non-wetting characteristics the evaporant forms a sphere when melted resulting in "point source" performance. The alumina coated source also provides longer life compared to the unprotected source.

Alumina coated oats are also available with a “barrier Style” coating which allows wetting to the dimple area, but prevents the material from migrating out of the evaporation area. This is ideal for the evaporation of gold when better uniformity is required. We also offer alumina coated tungsten basket sources as well. These offer the benefit of reaching high temperatures with low current. Visit our online store to view all of our alumina coated evaporation sources.

Join R.D. Mathis Company at these upcoming events
Sept. 29, 2015 — SCCAVS (SoCal AVS), Booth #10, Holiday Inn, Buena Park, Ca

Oct. 20-22, 2015 — Nat’l AVS, Booth #733, San Jose, Ca

Dec.1-3, 2015 — MRS Show, Booth#617, Boston, Ma

The Evaporator

R.D. Mathis Company
P.O BOX 92916
Long Beach, Ca 90809-2916
Telephone (562) 426-7049
Fax (562) 595-0907
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