Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

Thursday, May 22, 2008

"I Have Something You Can't Have, Ha Ha!"


All right, so these Brazilian beetles probably aren't flaunting their diamond based photonic crystals around intentionally, but watching the weevil L. augustus' iridescent green scales shimmer in the light would make any researcher envious.

Especially when diamond structured photonic crystals are needed to create super fast optical computers, and creating the crystals synthetically hasn't worked (despite millions of dollars, complex instrumentation and numerous calculations).

Optical computers use photons in visible light and infrared beams to communicate data and perform digital computations much faster than today's computers, which run on electrons. Right now, electrons travel around on transistor switches on metal wires, storing and processing data, at about 10% the speed of light. Data carried through optical fibers has to be converted from light back to electricity before that information can be accessed on a computer. Optical computers of the future will consist of photons whizzing around on optical fibers or thin films, performing the same functions as a regular computer, but much faster.

But an ultra high speed computing system running on pure light is still a long way off. Researchers are currently trying to make photonic crystals from a transparent semiconductor, using crystals found in L. Augustus' as a model. Unfortunately, researchers can't just stick the beetle's scales into your desktop- they are made of out material similar to your fingernails, which doesn't bend light well enough to be used in computers, and wouldn’t last long anyway. Photonic crystals, whenever they are successfully designed, would control the movement of photons in future computers by guiding and bending light in extremely small spaces. In the meantime, we can all ponder over nature's effortless ability to create things that we can't.
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Tuesday, October 17, 2006

Bats, brains, and larva snacks

Tis the season for costumes and pumpkins, carmel apples and witches, tricks and treats...and some of the coolest science!

Get in the mood by reading some real life spooky stories, such as Bats: Do they really suck blood , Secrets of the Mummy, or any of the stories linked to things that go bump in the night - all from the Why Files (a great science site).

Then check out Steve Spangler Science: Halloween Science Recipes for great ideas on how to make your own halloween props while learning all about the science behind slime, dry ice, and make-your-own quicksand. Be sure to watch his exploding pumpkin video - though note that he doesn't tell you how to do it yourself :(

And my guess is that nothing will get you in the mood for trick or treating like a big bowl of crunchy larva snacks (they come in BBQ, cheddar cheese or Mexican spice) or chocolate covered insects. Or a nice dish of jello shaped like a brain or an anatomical heart.

Tired of giving out the same kinds of candy every year? This year do something different - hand out scorpion, cricket, or larva lollipops. They're even sugar free!

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