Pictured here are three wireless devices that use carbon nanotubes (CNTs) to achieve high sensitivity to ammonia. At left is a patch antenna, inkjet-printed on photographic paper, with the CNTs shown in black. At top center is an omni-directional segmented loop antenna on a soft substrate, designed for potential 5.8 GHz RFID integration. At bottom right is an inter-digitated capacitor on silicon substrate with CNT loading across the electrodes, being tested for its DC resistance. (Georgia Tech Photo: Gary Meek.)
Homeland security is going to be an increasingly important sector for design engineers. One thing that's lacking is turnkey solutions which bundle everything from the sensor to the software to the under interface to the packaging and deployment. (For an interesting development in that regard, in the airport perimeter security realm, see a story I did a while back on some IBM work -- "IBM Patenting Airport Security Profiling Technology.")
That said, this sensor is a great advance in terms of applicability to portable devices.
What am I missing? If the sensor requires a special printer and special ink cartridges, what is the advantage over standard manufacturing? Or is the idea that the military (or whoever) would purchase their own printer / "ink" and make the items onsite?
That's a good question, Beth. The researchers hope to spin off a company to build a manufacturing facility. While startup costs could run into the millions, once that's accomplished, printing the sensors would be fast and inexpensive.
I can see some value in such a sensor, and it certainly is a great invention. Unfortunately it would not be able to detect any of the non-ammonia based explosives, of which there are many. For example, consider plain old gunpowder, using a potasium based compound, and nitroglyceren , and that old military standby "C4". So while it is a great contribution, it does not end the problem. Aside from that, there is an easy and simple way to render the sensor useless. But I won't describe that method at all.
This may become a great product and very IMPORTANT one. We need to doall we can to support and help our troops. This is a very nice idea, but clearly it is important to isolate the amonia from regular uses and minimize errors.
Given the toll that IEDs have had on troops and civilians, this seems like a technology that could have some real life-saving impact. I'm curious, though if specialized ink-jet printers and photographic paper limit production to a laboratory scale, how realistic is it that these sensors can really make a different in sniffing out dangerous explosives?
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.