Biology

Scientists fly real beetles by radio remote control

One of the giant flower beetles, in human-controlled flight (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
One of the giant flower beetles, in human-controlled flight (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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One of the giant flower beetles, in human-controlled flight (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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One of the giant flower beetles, in human-controlled flight (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
The technology not only gave the researchers a better insight into how the insects fly, but it could also find use in areas such as search-and-rescue (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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The technology not only gave the researchers a better insight into how the insects fly, but it could also find use in areas such as search-and-rescue (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
The backpack consists of a commercially-available microcontroller, a wireless transmitter/receiver, and a 3.9-volt micro lithium battery (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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The backpack consists of a commercially-available microcontroller, a wireless transmitter/receiver, and a 3.9-volt micro lithium battery (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
It also includes six electrodes, which were wired to the beetles' optic lobes and flight muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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It also includes six electrodes, which were wired to the beetles' optic lobes and flight muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
Using radio signals transmitted to the backpack once every millisecond, the researchers selectively stimulated different muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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Using radio signals transmitted to the backpack once every millisecond, the researchers selectively stimulated different muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
By doing so, they were able to get the insects to take off, turn left or right, or hover in place (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
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By doing so, they were able to get the insects to take off, turn left or right, or hover in place (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)

Studying insects in flight can be difficult. They're usually tethered in place, although this may affect the manner in which they fly. That's why scientists from the University of California, Berkeley and Singapore’s Nanyang Technological University (NTU) took a different approach – they installed an electronic backpack on giant flower beetles, allowing them to be remotely controlled while in free flight. The technology not only gave the researchers a better insight into how the insects fly, but it could also find use in areas such as search-and-rescue.

The backpack consists of a commercially-available microcontroller, a wireless transmitter/receiver, and a 3.9-volt micro lithium battery. It also includes six electrodes, which were wired to the beetles' optic lobes and flight muscles.

The beetles were first placed in a closed room equipped with eight 3D motion-capture cameras. Using radio signals transmitted to the backpack once every millisecond, the researchers then selectively stimulated different muscles. By doing so, they were able to get the insects to take off, turn left or right, or hover in place.

At the same time, the backpack also transmitted neuromuscular data to a computer.

It also includes six electrodes, which were wired to the beetles' optic lobes and flight muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)
It also includes six electrodes, which were wired to the beetles' optic lobes and flight muscles (Photo: Tat Thang Vo Doan and Hirotaka Sato/NTU Singapore)

Among other things, it was discovered that the beetles' coleopteran third axillary sclerite muscle played a key role in their ability to turn. In the past, it had been assumed that the muscle was used only for folding the wings underneath the wing covers.

According to the study's lead author, NTU's Prof. Hirotaka Sato, the backpacking beetles could have applications beyond entomological research. "We could easily add a small microphone and thermal sensors for applications in search-and-rescue missions," he said. "With this technology, we could safely explore areas not accessible before, such as the small nooks and crevices in a collapsed building."

A paper on the research was recently published in the journal Current Biology. Video of some of the flights can be seen below.

Similar research is being conducted at North Carolina State University, where researchers are remotely steering backpack-equipped cockroaches.

Source: UC Berkeley via Popular Science

Remote-controlled beetle - Nanyang Technological University Singapore

4 comments
BT
Then they added Sound and Echolocation..
VirtualGathis
"We could easily add a small microphone and thermal sensors for applications in search-and-rescue missions," he said. "With this technology, we could safely explore areas not accessible before, such as the small nooks and crevices in a collapsed building." This guy isn't thinking big enough. Being able to control musculature via computer and electrode stimulation could have a great many applications. For example move beyond insects to humans it could provide a pathway for paralyzed persons to use limbs their brain can no longer reach. Combine it with this kind of research: http://news.bbc.co.uk/2/hi/sci/tech/471786.stm and you have an entirely new and creepy kind of surveillance. Where an operator could "drive" a living animal including birds and see through it's eyes and hear through it's ears...
Nik
Beetles now, humans next?
Lizhang Wen
Old news. University of California was already working on this under the auspices of DARPA back in 2009. http://www.technologyreview.com/news/411814/the-armys-remote-controlled-beetle/ Presumably they made some progress in the 6 years since, but nothing that's immediately obvious. At best this article is only an update and not breaking news.