Spray-on antennas could unlock potential of smart, connected technology

ScienceDaily | 9/21/2018 | Staff
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But a breakthrough by researchers in Drexel's College of Engineering, could now make installing an antenna as easy as applying some bug spray.

In research recently published in Science Advances, the group reports on a method for spraying invisibly thin antennas, made from a type of two-dimensional, metallic material called MXene, that perform as well as those being used in mobile devices, wireless routers and portable transducers.

Finding - Lot - Type - Technology - Kapil

"This is a very exciting finding because there is a lot of potential for this type of technology," said Kapil Dandekar, PhD, a professor of Electrical and Computer Engineering in the College of Engineering, who directs the Drexel Wireless Systems Lab, and was a co-author of the research. "The ability to spray an antenna on a flexible substrate or make it optically transparent means that we could have a lot of new places to set up networks -- there are new applications and new ways of collecting data that we can't even imagine at the moment."

The researchers, from the College's Department of Materials Science and Engineering, report that the MXene titanium carbide can be dissolved in water to create an ink or paint. The exceptional conductivity of the material enables it to transmit and direct radio waves, even when it's applied in a very thin coating.

Antennas - Thicknesses - Tens - Nanometers - Asia

"We found that even transparent antennas with thicknesses of tens of nanometers were able to communicate efficiently," said Asia Sarycheva, a doctoral candidate in the A.J. Drexel Nanomaterials Institute and Materials Science and Engineering Department. "By increasing the thickness up to 8 microns, the performance of MXene antenna achieved 98 percent of its predicted maximum value."

Preserving transmission quality in a form this thin is significant because it would allow antennas to easily be embedded -- literally, sprayed on -- in a wide variety of objects and surfaces without adding additional...
(Excerpt) Read more at: ScienceDaily
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