'Cellborg' Humidity Gauge First Bacterial Cyborg
Chemists at the University of Nebraska have created a humidity gauge by actually 'assimilating' living bacteria into an electronic circuit. This appears to be the first instance in which a living cell becomes a fixed part of the structure of an electronic device.
('Cellborg' - first bacterial cyborg)
Ravi Saraf and student Vikas Berry made their device from a standard silicon chip inlaid with gold electrodes. First they added a coating of Bacillus cereus bacteria, which clustered together to form bridges between the electrodes. Then they washed the chip with a solution of gold particles, each of which measured about 30 nanometres across and was covered with peptides to help it stick to the bacteria.
A rise in moisture levels causes the bacteria to swell slightly, which increases the distance between neighbouring nanoparticles by up to 0.2 nanometres. This tiny separation makes it harder for electrons to hop from one particle to the next, which reduces the current flowing across the chip. A change from 20% to 0% humidity increased the current flowing through the device by 40 times, whereas the current in a solely electronic device decreases by just ten times.
The bacteria must stay alive during their assimilation so that they do not leak any internal fluids and lose their shape. According to Saraf, the bacteria can survive for about two days without nutrients. However, the device continues to work even after the bacteria die; the zombie 'borg-teria' continue to work for as long as a month after death.
(Hugh - the Borg drone)
Science fiction fans are well aware of the 'cellborgs' namesake - the Borg collective of cyborgs (cybernetic organisms) who stop at nothing in their relentless pursuit of assimilating other intelligent organisms.
In the series (and associated films), captured human beings are outfitted with mechanical and electrical parts that will make them serviceful to the collective.
Saraf speculates that similar devices could one day be made that take greater advantage of living organisms, perhaps even using bacteria's energy systems to power electrical devices. But that will involve going one step further: using a physiological rather than physical response of a bacteria. "One still needs to demonstrate that an electronic coupling between the biology of the microorganism and a nanodevice is possible," he adds.
Read Cyborg cells sense humidity.
Scroll down for more stories in the same category. (Story submitted 10/18/2005)
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 ( 3 )
Related News Stories -
Cryonic Preservation - The Last Perk You'll Ever Need
'Is there not also a law providing for voluntary suspension of animation?' - Edward Page Mitchell, 1879.
How Deep Learning And AI Will Affect Health Care
'A sort of satchel with an orifice in the top from which two metallic tentacles protruded slightly.' - Gordon R. Dickson, 1965.
DxtER! Tricorder Prize Won By Final Frontier Medical Devices
We've been waiting a long time for this, Star Trek fans.
Dune Fans! Your God Emperor Is Ready
'If one held a sandtrout in the hand, smoothing it over your skin, it formed a living glove.' - Frank Herbert, 1976.
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.
Bat Bot Robotic Flapping-Wing Drone
'The dark birdforms dotted the mountaintops like statues of prehistoric beasts, wings outspread...'
NASA's Astronaut Rescue Ball
'Ball and closely-prisoned man plummeted downward..'
ARM Wants To Build Brain Chips
'Slivers of microsoft, angular fragments of colored silicon...'
Sky Fence - A Drone-Proof Shield Created Over Prison
'There’s still a protective field over the whole thing. It volatilizes anything that tries to get through.'
Geoengineering The Atmosphere For Climate Change
'...a uniform temperature for each degree of latitude the year round.'
Archinaut Orbiting Robotic Factory
'mass-produced only in the orbiting factories...'
Cryonic Preservation - The Last Perk You'll Ever Need
'Is there not also a law providing for voluntary suspension of animation?'
Computers Understand Humans By Watching And Modeling Them
Soon, your computer will be watching you... and judging you.
NASA Asks For Moon To Earth Delivery Ideas
'Authority's 3-g catapult was almost one hundred kilometers long...'
Musk Tunnels Wisely Restrict Drivers
Too many robots.
Robot Swarms Controlled With Augmented Reality
'You're not thinking in enough dimensions...'
MIT's C-LEARN Helps Robots Transfer Learning To Other Robots
'Talk Between Robots radio...'
Mini-Brains In A Dish
'Cultured brains on a slab.'
Rapid Automated Search For Habitable Planets Needed
'I was near enough it now to set my automatic astronomical instruments to searching it for a habitable planet.'
WatchSense Perfect For Fat-Fingered Smartwatch Owners
'Now all you had to do was wave your hand in the general direction of the components...'
Digital Construction Platform Robot 3D Prints A Building
'It extrudes material like a spider.'
More SF in the News Stories
More Beyond Technovelgy science news stories