Re-engineering biology

Tom James @ 31-07-2009

roboticsinsiAs I’ve mentioned before, we’re entering a new phase of technological progress: engineers and technologists are not just seeking inspiration in the mechanisms of the natural world, but are actually reverse- and re-engineering biology to improve synthetic technology. In this case researchers in Germany are studying how bow flies perform their incredible feats of aerial acrobatics by creating a wind tunnel for blow flies (pictured):

A fly’s brain enables the unbelievable – the animal’s easy negotiation of obstacles in rapid flight, split-second reaction to the hand that would catch it, and unerring navigation to the smelly delicacies it lives on.

Yet the fly’s brain is hardly bigger than a pinhead, too small by far to enable the fly’s feats if it functioned exactly the way the human brain does. It must have a simpler and more efficient way of processing images from the eyes into visual perception, and that is a subject of intense interest for robot builders.

While researchers use biomimetic inspiration for the development of flying robots other scientists are working to reprogram existing biological technology, in this case altering bone marrow stem cells so that they function as retinal cells:

University of Florida researchers were able to program bone marrow stem cells to repair damaged retinas in mice, suggesting a potential treatment for one of the most common causes of vision loss in older people.

The success in repairing a damaged layer of retinal cells in mice implies that blood stem cells taken from bone marrow can be programmed to restore a variety of cells and tissues, including ones involved in cardiovascular disorders such as atherosclerosis and coronary artery disease.

For all the pessimism about the future of human civilisation, it is exhilerating to live in an era with so many opportunities and challenges.

[both from Physorg][image from Physorg]

Biomimetics for universal radio

Tom James @ 05-06-2009

snailishResearchers at MIT have developed a software radio chip based on the operations of the cochlea (the seashell bit of the human ear):

The RF cochlea, embedded on a silicon chip measuring 1.5 mm by 3 mm, works as an analog spectrum analyzer, detecting the composition of any electromagnetic waves within its perception range. Electromagnetic waves travel through electronic inductors and capacitors (analogous to the biological cochlea’s fluid and membrane). Electronic transistors play the role of the cochlea’s hair cells.

Software radios are all kinds of awesome, and it’s interesting how biomimetics is being used in more and more contexts – no need to reinvent the wheel.

[via Technovelgy][image from POSITiv on flickr]

Bionic penguins!

Paul Raven @ 21-04-2009

There’s nothing more that needs to be mentioned. Except the fact that they communicate in swarms.

These are the end-times, kids. [via New Scientist]

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