Reconfigured Tesla coil aligns, electrifies materials from a distance

April 14, 2016
Reconfigured Tesla coil aligns, electrifies materials from a distance
Nanotube wires self-assemble under the influence of a directed electric field from the Tesla coil. Credit: Jeff Fitlow

Scientists at Rice University have discovered that the strong force field emitted by a Tesla coil causes carbon nanotubes to self-assemble into long wires, a phenomenon they call "Teslaphoresis."

The team led by Rice chemist Paul Cherukuri reported its results this week in ACS Nano.

Cherukuri sees this research as setting a clear path toward scalable assembly of nanotubes from the bottom up.

The system works by remotely oscillating positive and negative charges in each nanotube, causing them to chain together into long wires. Cherukuri's specially designed Tesla coil even generates a tractor beam-like effect as nanotube wires are pulled toward the coil over long distances.

This force-field effect on matter had never been observed on such a large scale, Cherukuri said, and the phenomenon was unknown to Nikola Tesla, who invented the coil in 1891 with the intention of delivering wireless electrical energy.

"Electric fields have been used to move small objects, but only over ultrashort distances," Cherukuri said. "With Teslaphoresis, we have the ability to massively scale up force fields to move matter remotely."

The researchers discovered that the phenomenon simultaneously assembles and powers circuits that harvest energy from the field. In one experiment, nanotubes assembled themselves into wires, formed a circuit connecting two LEDs and then absorbed energy from the Tesla coil's field to light them.

Cherukuri realized a redesigned Tesla coil could create a powerful force field at distances far greater than anyone imagined. His team observed alignment and movement of the nanotubes several feet away from the coil. "It is such a stunning thing to watch these nanotubes come alive and stitch themselves into wires on the other side of the room," he said.

Nanotubes were a natural first test material, given their heritage at Rice, where the HiPco production process was invented. But the researchers envision many other nanomaterials can be assembled as well.

Lindsey Bornhoeft, the paper's lead author and a biomedical engineering graduate student at Texas A&M University, said the directed force field from the bench-top coil at Rice is restricted to just a few feet. To examine the effects on matter at greater distances would require larger systems that are under development. Cherukuri suggested patterned surfaces and multiple Tesla systems could create more complex self-assembling circuits from nanoscale-sized particles.

Reconfigured Tesla coil aligns, electrifies materials from a distance
Rice University chemist Paul Cherukuri, left, Texas A&M graduate student Lindsey Bornhoeft, center, and Rice research scientist Carter Kittrell show the power of Teslaphoresis, which wirelessly lights their fluorescent tubes. Tests with a customized Tesla coil revealed that nanotubes within the field self-assemble into wires. Credit: Jeff Fitlow

Cherukuri and his wife, Tonya, also a Rice alum and a co-author of the paper, noted that their son Adam made some remarkable observations while watching videos of the experiment. "I was surprised that he noticed patterns in nanotube movements that I didn't see," Cherukuri said. "I couldn't make him an author on the paper, but both he and his little brother John are acknowledged for helpful discussions."

Cherukuri knows the value of youthful observation – and imagination – since he started designing Tesla coils as a teen. "I would have never thought, as a 14-year-old kid building coils, that it was going to be useful someday," he said.

Cherukuri and his team self-funded the work, which he said made it more meaningful for the group. "This was one of the most exciting projects I've ever done, made even more so because it was an all-volunteer group of passionate scientists and students. But because Rice has this wonderful culture of unconventional wisdom, we were able to make an amazing discovery that pushes the frontiers of nanoscience."

Reconfigured Tesla coil aligns, electrifies materials from a distance
Nanotube assemblies are drawn to the source of a Tesla field in an experiment at a Rice lab. Credit: Jeff Fitlow

The teammates look forward to seeing where their research leads. "These nanotube wires grow and act like nerves, and controlled assembly of nanomaterials from the bottom up may be used as a template for applications in regenerative medicine," Bornhoeft said.

"There are so many applications where one could utilize strong force fields to control the behavior of matter in both biological and artificial systems," Cherukuri said. "And even more exciting is how much fundamental physics and chemistry we are discovering as we move along. This really is just the first act in an amazing story."

Co-authors are Rice senior Aida Castillo; Rice research scientists Carter Kittrell, Dustin James and Bruce Brinson; Rice Distinguished Faculty Fellow Bruce Johnson; Thomas Rybolt, chemistry department head and the UC Foundation Professor at the University of Tennessee-Chattanooga; and Preston Smalley of the Second Baptist School in Houston, who worked on the project as a summer intern at Rice. Cherukuri and Bornhoeft began the project while both were at the University of Tennessee-Chattanooga.

Explore further: Perfect nanotubes shine brightest

More information: Lindsey Rae Bornhoeft et al. Teslaphoresis of Carbon Nanotubes, ACS Nano (2016). DOI: 10.1021/acsnano.6b02313

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9 comments

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Klewch
5 / 5 (10) Apr 14, 2016
Be interesting to see what this would look like in a micro-g environment. Send up an experiment to the ISS.
compose
Apr 14, 2016
This comment has been removed by a moderator.
winthrom
4.4 / 5 (8) Apr 14, 2016
Also be interesting to see if the self assembly can induce chemical ties between nanotubes once the electrostatic forces lay the tubes into long strands. The next step would be a process to "draw" nanotube cable strands for constructing space elevators, carbon fiber aircraft skins, etc.
Nik_2213
4.5 / 5 (4) Apr 14, 2016
Fun stuff !!

Snag is you need a *really* good Faraday Cage around your workshop or lab as a Tesla Coil will swamp the RF spectrum...
Whydening Gyre
4.4 / 5 (7) Apr 14, 2016
Fun stuff !!

Snag is you need a *really* good Faraday Cage around your workshop or lab as a Tesla Coil will swamp the RF spectrum...

C'mon, Nik. Where's your sense of fun, scientific mischief?
Osiris1
3.7 / 5 (3) Apr 15, 2016
This idea is copyrighted by me.... spin those nanotubes into rope, expecially ribbon cable about 4 to 8 inches wide and fairly thin for use as a space elevator tether. After all, the researchers did say the idea was scaleable.
cantdrive85
1.7 / 5 (6) Apr 15, 2016
As for space elevators, well if you really want to ride a lightning rod into space be my guest.
The self assembly of the nanotubes into long living wires has been observed in the plasma lab already, they form sort of skeletal structures in the plasma. The self assembly is a profoundly important aspect for cosmology and voids the necessity of DM and DE for that matter.
http://plasmauniv...2007.pdf
The above experiment is further confirmation of the Electric Universe, and another nail in the coffin of the standard theory...
Captain Stumpy
4 / 5 (8) Apr 16, 2016
@cd
http://plasmauniv...2007.pdf
psuedoscience link to a known cult & phishing site
if you can't supply a link to a reputable peer reviewed journal with an impact in the topic then it's no different than urinating into a fan and trying to convince yourself it's raining

also note: the eu is a debunked pseudoscience
you did a lot of the work for that here: http://phys.org/n...ggs.html

but you can also visit
http://www.everyt...ebunked/

https://www.youtu...-CfukEgs

.

.

.

This idea is copyrighted by me
@Osiris
LOL - nice try but...
you can't copyright spinning as it is already known to the entire planet as the means to effectively combine small thin structures into string or rope and it is used repeatedly by every textile mill that produces clothing, yarn, string or materials
neiorah
not rated yet Apr 20, 2016
Since they are finding out how to move objects at a distance with the modified tesla coil, I am wondering if it was this type of technology that moved the huge blocks in s America. I would have to know what the stone blocks were composed of but it has been posited that very heavy stone blocks were moved by some electrical force in ancient times, prime example being Machu Picchu high up in the hills. This development could prove to be interesting.

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