Posted on 03/25/2010 10:57:48 AM PDT by neverdem
The collective properties of nanoparticles manifest in their ability to self-organize into complex microscale structures. Slow oxidation of tellurium ions in cadmium telluride (CdTe) nanoparticles results in the assembly of 1- to 4-micrometer-long flat ribbons made of several layers of individual cadmium sulfide (CdS)/CdTe nanocrystals. Twisting of the ribbons with an equal distribution of left and right helices was induced by illumination with visible light. The pitch lengths (250 to 1500 nanometers) varied with illumination dose, and the twisting was associated with the relief of mechanical shear stress in assembled ribbons caused by photooxidation of CdS. Unusual shapes of multiparticle assemblies, such as ellipsoidal clouds, dog-bone agglomerates, and ribbon bunches, were observed as intermediate stages. Computer simulations revealed that the balance between attraction and electrostatic repulsion determines the resulting geometry and dimensionality of the nanoparticle assemblies.
Ohhh. So all that crazy talk about miracles from the Light of the World is...
never mind.
Science and religion are very very seperate. Mya bad.
interesting
Is it true that dark is heavier than light and that’s why it sinks to the bottom of the ocean?
This was poorly written. They might as well have said that “light can affect matter”. Big deal. In this case, light can cause an electrochemical change in matter. Been doing it in plants for a long time.
I see matter as nothing more than, metaphorically speaking, coagulated energy. I also think that an excellent analogy to our “real world” would be “The Matrix”. What we perceive as the “real world” is almost entirely empty space.
That is significant.
Learned this at age 5 when I left an old 45rpm on the window sill.
I forgot how fun science is! :)
Light is a bunch of photons zipping through space at, well, the speed of light. Even though their mass is miniscule, the fact that they beat the hell out of something after a while should really not be a surprise.
Or am I missing something?
/
Sounds to me like this is an electromagnetic/chemical effect - not the corollary of space bending light.
what happened to nanoparticles not exposed to ambient light?
I learned that fact years ago while ice fishing. When the sun goes down and the temp drops, it takes much longer for your line to sink back to the bottom.
The difference is enough that you will instantly notice it when the sun goes down.
Light causes plants to move too. Phototropism. Maybe the ambient light heated the strands differentially.
God created science.
QED!!
Ah, so you’ve heard the theory of the heaviness of dark, have you?
Those things on the ceiling that make you squint when you look at them? Some people call them “lights” or “light bulbs”, but in reality, they are “dark suckers”. The sun, like all stars, is just one huge dark sucker.
Now, sometimes they get full of dark, and have to be replaced. And that dark that you see under the table? Well, that’s because the dark can’t be sucked into the dark sucker because the table’s in the way.
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