The study of the performance of ultra-small structures, materials, and devices, usu. usually 0.1 to 100 nm; also, the study of manipulating materials on an atomic or molecular scale. Nanoscience is sometimes used interchangably with Nanotechnology, which is the manipulation of matter on an atomic ...

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4answers
479 views

Can a single molecule have a state?

I was studying a book about thermodynamics of nanosystems and I got stuck with this question in my mind which I couldn't find an answer for. For instance, does a single water molecule have a state, ...
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2answers
656 views

Have they really photographed light behaving both as a particle and a wave?

I just came across this article where they are claiming that they have photographed light behaving both as a wave and a particle! The paper has been published in Nature Communications and I read the ...
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6answers
3k views

Perpetual motion machine of the second kind possible in nano technology?

First of all sorry for my English - it is not my native language. During my engineering studies at the university the thermodynamics professor told us that the "second law of thermodynamics is not ...
3
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1answer
1k views

Nanotube chiral angle as a function of $n$ and $m$

I'm looking into nanotubes and I thought I'd assure myself that the basic geometry equations are indeed correct. No problems for the radius, I quickly found the known formula: $$R = \sqrt{3(n^2+m^2+...
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1answer
363 views

Why is graphene stronger than graphite?

Why is graphene stronger than graphite when graphene is just a single layer while graphite is multiple layers of graphene? And can't we say that diamond and coal also consist of layers of graphene as ...
1
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1answer
31 views

Why the properties of a substance like color changes when we go into the nano scale?

I have heard that the physical as well as chemical properties of a substance changes when we go to the nano scale. For example, Gold is considered an inert material in that it doesn’t corrode or ...
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2answers
28 views

How is the color difference of CdS nano-particles related to the “particle in a box” problem in quantum mechanics?

In my lecture on quantum mechanics, I was told that nano-particles of CdS with different sizes of have different colors and that this fact is a direct consequence of the "particle in a box" problem. ...
1
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1answer
237 views

What kind of phases nanoparticles have (gas-solid-liquid)?

If a phase transition requires a number of particles that is in the TD-limit, can nanoparticles (~10 atoms) have phase transitions? What kind of phases and transitions nanoparticles have?