Graphene Cytobot - Cyborg Bacterial Spores May Help Astronauts
Cyborg bacterial spores festooned with quantum dots - cytobots - leverage their extreme sensitivity to changes in humidity. It's a bacterial spore with quantum dots on its cell membrane that generate an electrical charge when the cell expands and shrinks depending on the humidity in the surrounding environment. The device may be able to detect leaks in the International Space Station, among other applications.
(Cyborg bacterial spores with quantum dots - cytobots)
At the tiny scale of a single cell, measuring movements isn’t easy. So the researchers wanted to find a way to get the clearest signal about a particular environmental condition—in this case, humidity—based on how much a cell moves in response to it. The researchers chose a particularly sensitive kind of cell, a spore of the bacterium Bacillus, and placed two quantum dots on its cell membrane. Quantum dots are tiny conductors that can efficiently transfer signals from one medium to another.
The researchers attached electrodes to either end of the spore and measured the dots’ conductivity; when the humidity was lower, the spore would contract and bring the quantum dots closer, which would create a spike in the conductivity reading. Each time the researchers changed the humidity around the spore, they saw a clear change in the readings, with a response rate 10 times faster than the most advanced water-absorbing sensors, they said.
Such rapid and sensitive humidity readings could be useful for conditions where changes in humidity could spell disaster, like to detect leaks in space.
Robert Heinlein thought about this problem. In his 1948 short story Gentlemen, Be Seated, he described life in a lunar habitat. And the inevitable air leaks.
There were perhaps a dozen bladder-like objects in the tunnel, the size and shape of toy balloons. They seemed to displace exactly their own weight of air; they floated without displaying much tendency to rise or settle. Konski batted one out of his way and answered me before I could ask.
"This piece of tunnel was pressurized today," he told me.
"These tag-alongs search out stray leaks. They're sticky inside. They get sucked up against a leak, break, and the goo gets sucked in, freezes and seals the leak."
(Read more about Heinlein's tag-alongs)
As far as I know, the first sf writer to combine electronic and tiny portions of living systems to create new products was Philip K. Dick.
As far as every day consumer products are concerned, you can't beat the Ampek F-a2 Recording System:
Nat Flieger reflexively poured water into a cup and fed the living protoplasm incorporated into the Ampek F-a2 recording system which he kept in his office; the Ganymedean life form did not experience pain and had not yet objected to being made over into a portion of an electronic system... neurologically it was primitive, but as an auditory receptor it was unexcelled.
(Read more about Dick's Ampek F-a2 Recording System)
Readers in their second decade of enjoying Technovelgy.com may recall a very similar idea from 2005 - 'Cellborg' Humidity Gauge First Bacterial Cyborg .
Scroll down for more stories in the same category. (Story submitted 3/15/2015)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...' - Isaac Asimov, 1965.
ODYSSEUS Solar-Powered Stratospheric Plane Flies Forever
'The planes flew continuously, twenty-four hours a day...' - EB White, 1950.
Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.
Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
North Focals Smart Glasses Provide Augmented Reality In Style
'The world ... is drenched in unfamiliar information all the way to the horizon.'
Tesla Driver Caught Napping Behind The Wheel
'Mary Risling settled back for a little nap...'
Hayabusa 2 To Begin Asteroid Mining
'We must dig down, and then doubtless we shall find the metal.'
Ionocraft Drone Powered By Electrohydrodynamic Thrust
'He saw one hiss by him as he rounded the corner, trailing a short whip antenna...'
Purdue Pharma Ready To Profit From OxyContin Use Or Addiction Recovery
'It may be organic damage. It may be permanent. Time'll tell, and only after you are off Substance D for a long while.'
BloxVox Mutes Cellphone Convos
It's the polite thing to do, and has been the polite thing to do for about four generations.
Superfast Replicator: Volumetric Additive Manufacturing
I can't wait. Bring it on.
DNA May Contain Malware
'You were told to embed the logical pathogen.'
I Can't Resist Worm Robots
'Seen close it was not completely flexible...'
Rplate Digital License Plates Now Legal In Michigan
'Gragg's digital ink license plates ...'
Can Musk Starship Astronauts Use Magnetic Boots?
'Walking awkwardly in the magnetic boots that held him to the black mass of meteoric iron...'
Giant Dolphin Spotted On Jupiter!
'Now at last he could appreciate its real size and complexity...'
Musk's Starship An SF Fan's Dream Come True
Perfect for testing, perfect for fans!
TinyMobileRobots Are Sewer Sentinels
Every movie monster gets its start someplace.
Fishy Facial Recognition Now Possible
'Palenkis can identify random line patterns better than any other species in the universe.'
Spicy Tomatoes Created With Genetic Engineering
How about mashed potatoes and brown gravy?
More SF in the News Stories
More Beyond Technovelgy science news stories