Genetically Engineered Cell Is A Living Laser

A single cell genetically engineered to express green fluorescent protein (GFP) can amplify photons into nanosecond-long pulses of laser light. This advance was pioneered by researchers at the Wellman Center for Photomedicine at Massachusetts General Hospital.


(Single cell laser)

The investigators chose GFP for their exploration of those questions because the protein -- originally found in a species of jellyfish -- can be induced to emit light without the application of additional enzymes. Its properties are well understood, and there are established techniques to genetically program many organisms to express GFP.

Using that information, their next step was to develop a line of mammalian cells expressing GFP at the required levels. The cellular laser was assembled by placing a single GFP-expressing cell -- with a diameter of from 15 to 20 millionths of a meter -- in a microcavity consisting of two highly reflective mirrors spaced 20 millionths of a meter apart. Not only did the cell-based device produce pulses of laser light as in the GFP solution experiment, the researchers also found that the spherical shape of the cell itself acted as a lens, refocusing the light and inducing emission of laser light at lower energy levels than required for the solution-based device. The cells used in the device survived the lasing process and were able to continue producing hundreds of pulses of laser light.

"While the individual laser pulses last for only a few nanoseconds, they are bright enough to be readily detected and appear to carry very useful information that may give us new ways to analyze the properties of large numbers of cells almost instantaneously," says Yun, who is an associate professor of Dermatology at Harvard Medical School.

Fans of David Brin's novel Sundiver recall that one of the aliens is able to emit low power laser beams from his eyes.

"His eyes, damnit! Coumarin? His 'dietary supplement' is a dye used in lasers! He killed Dubrowsky when he tried to help me and Donaldson!

"He was lying about that laser plant back on his home planet! The Pring have their own source of coherent light!

Thanks to an anonymous reader for the tip and reference for this story. Via Science Daily.

Scroll down for more stories in the same category. (Story submitted 6/14/2011)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Biology ")

Researchers Say 'Biohybrid Robot' - Clarke Said 'Biot'
'... The biological robots were not living creatures.' - Arthur C. Clarke, 1972.

Unique DNA To Foil Parts Counterfeiters
'... the only molecule, a unique protein amino acid, which could not be duplicated.' - Philip K. Dick, 1965.

Steerable Locusts Detect Explosives
Science fiction writers again provide a blueprint for the future.

Real Leather Without Cows Modern Meadow Biofabrication
'Plastissue, as any fool can see...' - WF Wallace, 1952,

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Keith Laumer's Bolo Autonomous Tanks Right On Schedule
'I cannot lie idle under attack.'

When Computers Develop Their Own Language, Will They Talk To Us?
'The curious absent look of a robot talking on the TBR circuits - the Talk Between Robots radio...'

LipNet Reads Lips - Until Disconnected, That Is
'We'd have to cut his higher brain functions... I'm not sure what [HAL} would think about that.'

Eterni.me - To Skype With The Dead
'Nothing... left of Jeserac but a galaxy of electrons frozen in the heart of a crystal.'

Wearable MRI Is Former Occulus/Facebook Exec's New Project
'Your cephalochromoscope... that you always turn on and play when you get home...'

Ford Stratasys Infinte Build 3D Printer
'He proudly indicated his Buick... Almost as good as the original it was printed from...'

The Space Suit As Personal Spaceship
'Darn clever, these suits...'

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.'

Robot Strolls Field, Examines EVERY Plant
'The great machines that did the work ... required but a few dozen men to cultivate an entire county.'

Sweden Outlaws Drones
'An eye that could not only see, but fly, roam, travel at speeds and in directions to suit its operator...'

Wear Your Self-Powered Generator
'It's basically a micro-sandwich...'

TITAN-III Spider Robot Is WAY Too Quick (Video)
'My little friends can find you wherever you go!'

Bill Gates Suggests Tax On Robots
'A worker replaced by a nubot that 'appears or pretends to be human' had to be compensated...'

Handle, New Wheeled Hopping Robot
'the hopper sprang thirty feet into the air...'

Matrix Sentinel Ancestor, The Pipe Inspector Robot From Krakow
Watch out, Keanu!

Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.