DEC 09, 2013 12:00 AM PST

Galt

WRITTEN BY: Jen Ellis
During the course of Ayn Rand's classic novel Atlas Shrugged, Dagny and Hank are on a cross-country journey that eventually brings them to the ruins of a once-thriving automobile factory. It is there that Dagny discovers an incomplete motor of a revolutionary kind that has never been seen by the outside world. Despite missing critical parts and unable to crack its secrets, Dagny and Hank are fast to realize the motor's potential: that it can harness static electricity from the atmosphere and convert it into massive amounts of useful kinetic energy. Dagny becomes immediately obsessed with the motor and sets out on a quest to find its creator. A quest that in due time brings her to the protagonist/antagonist of the story: John Galt.

It is not something as robust in appearance as a machined block of metal, but researchers at Duke University have achieved something no less remarkable: a machine that captures the ubiquitous energy of microwaves and converts it into direct current voltage capable of recharging batteries. It is thought that with modification their design could also capture energy from other sources, including sound and wireless networking broadcasts. Their full research will be presented in the December 2013 edition of the journal Applied Physics Letters.

Allen Hawkes and Alexander Katko, both Duke University students, and electrical and computer engineering professor Steven Cummer built their device from common materials including fiberglass and copper. In a similar fashion to solar cells, the team's device captures ambient microwave radiation. The initial version is found to be producing 7.3 volts of electrical current. In contrast, USB-based chargers for mobile devices produce around 5 volts. The researchers have thus far achieved a dramatic 37 percent energy efficiency: comparable to that of the best solar power cells currently being produced.

The immediate vision of application is that of cell phones recharging in the complete absence of wires. One of the theorized uses for the design could be recovery of "lost" energy and diverting it back into the source of power, potentially opening up an entirely new generation of "green" technology. The architecture and choice of materials used in crafting the device's components allows for optimum energy harvesting, without otherwise creating interference for the unit in which the harvester is installed. People living in hard-to-reach locations might someday draw their electrical power from nearby cellular towers, "soaking up" the energy that would otherwise be lost and useless. The research team has also suggested that satellites in orbit might someday "beam down" microwave energy for harnessing by such devices en masse. And the design is scalable: Cummer observed that, "The beauty of the design is that the basic building blocks are self-contained and additive. One can simply assemble more blocks to increase the scavenged power."

It is difficult not to imagine a day in the not-too-distant future when automobile engines are humming along the highway, powered by the electromagnetic energy all around us that has until now been neglected.

Surely somewhere, John Galt must be smiling
About the Author
You May Also Like
MAR 16, 2020
Clinical & Molecular DX
MAR 16, 2020
New diagnostic tech uses AI to screen blood for over 1400 pathogens
New and reemerging microbial threats continue to challenge the public health and infectious disease response teams world ...
MAR 22, 2020
Space & Astronomy
MAR 22, 2020
Critical Sample Handling Equipment is Installed on the Perseverance Rover
It was only a couple of weeks ago that NASA’s Mars 2020 rover got renamed to the Perseverance rover, and with a la ...
MAR 24, 2020
Technology
MAR 24, 2020
3D Printing Cellulose
Cellulose is a material found in trees and plants that can help build complex structures. The uniqueness of the material ...
APR 29, 2020
Clinical & Molecular DX
APR 29, 2020
Move and Detect : Diagnosis of Neonatal Sepsis Using Fluorescent Micromotors
According to the World Health Organization (WHO), sepsis occurs when the body’s response to an infection injures i ...
MAY 21, 2020
Technology
MAY 21, 2020
Bridging Robotic and Human Connection Through Humor
Jon the Robot, a standup comedian, notes challenges in get bookings. "They always think I'm too robotic," ...
MAY 26, 2020
Technology
MAY 26, 2020
Creating High Security Identification
Imagine whispering at one end of the Echo Wall in the Temple of Heaven in Beijing. Suddenly, you find that people a far ...
Loading Comments...