14 votes
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Why do self cleaning windows use titanium dioxide (specifically in nanoparticle form)?

According to https://welshwindows.co.uk/glassmirrors/self-cleaning-glass/ Self Cleaning Glass How Does It Work? Pilkington Activ™ is effectively the same as conventional glass but with a specially ...
Waylander's user avatar
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11 votes
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Single-molecule magnet with electrically-controlled permeability: How does the Titan Shield from Deus Ex work?

Is there any existing examples of single-molecule magnets with permeability that can be controlled via altering current flow just like in case of electromagnets? If not, is there an explanation why it ...
agaitaarino's user avatar
9 votes

Functionalization of nanoparticles

If the thiolate bounds to the Au nanoparticle, both the electronic, as well as the mechanical properties of the thiolate and the Au nanoparticle change. So you are going to monitor these changes with ...
Buttonwood's user avatar
  • 29.8k
7 votes

Hardy Schulze law

In order to explain the Schuze-Hardy rule, you have to take into account that you are working with a colloidal dispersions stabilized electrostatically. The stability of this dispersions is well ...
PAEP's user avatar
  • 1,059
5 votes
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Are all stable Xenes (graphene-like 2D honeycomb sheets) buckled?

According to the authors of Ref. 1 this is a general property. They provide an explanation for the stability of such sheets based on formation of particular buckled geometries: The discovery of a ...
Buck Thorn's user avatar
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5 votes

How does aromaticity play out in carbon nanohoops?

You basically have a series of rings chained together. In such structures, if the individual rings can all have optimal electron counts for aromaticity then the aromatic coupling will probably be ...
Oscar Lanzi's user avatar
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4 votes
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What is a 'corona phase'?

One of the authors has recently established a research group at my university, so I spoke to a member of their lab: The corona phase is not exactly a phase in the thermodynamic sense, but rather the ...
GnomeSort's user avatar
  • 543
4 votes
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What do dashes mean in chemical formulas?

This nomenclature refers to a core-shell arrangement of nanoparticles. This is where you have a nanoparticle core consisting of one material that has been coated/decorated/wrapped/overlaid with ...
long's user avatar
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4 votes
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Nanocar racing competition and the race tracks used

While I can't find specific justification for the surface, the first competition involved both gold and silver "racetracks." Drivers gear up for world’s first nanocar race How to build and race a ...
Geoff Hutchison's user avatar
4 votes

Why does the displacement reaction of zinc in copper(II) sulfate solution result in dark metallic copper?

All metals look black or dark when presented as a sufficiently thin powder. The metals display their color only when the dimension of the grain is greater than the wavelength of the light, namely 400 ...
Maurice's user avatar
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3 votes

What is 'desorption hysteresis'?

Hysteresis occurs when the state of the system depends on its past states---that is, the state of the system is memory-dependent. The canonical example is a ferromagnet: if you apply and slowly ramp ...
a-cyclohexane-molecule's user avatar
3 votes

how to avoid bubble formation in hexane

As you state, hexane has a low boiling point. If the bubbles are hexane vapor, as opposed to an air leak, then cool the fluid and apparatus more. You might pre-chill the hexane in a dry ice bath. The ...
DrMoishe Pippik's user avatar
3 votes
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Do auto-catalytic aromatic compounds capable of forming self-replicating molecules exist?

I recall seeing a system that consisted of two planar components (and I am fairly certain those were aromatic) that could couple to form the product. The self-catalysis consisted of a product molecule ...
TAR86's user avatar
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3 votes
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Why do nanoparticles have a different color than their macro counterparts?

There is a fairly simple explanation of why small-enough particles are different from bulk materials. Once the particle becomes similar in size to the wavelengths of light involved then quantum ...
matt_black's user avatar
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3 votes

What is the significance of "magic numbers" of atoms in nanoparticles?

As indicated in the comment above, "magic numbers" (i.e., atom counts with much higher stability) have been known in atomic clusters of many types for a long time. Each magic number has a specific ...
Geoff Hutchison's user avatar
3 votes
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Spraying aluminium hydroxide nanoparticles onto PLA as fire retardant?

I suspect this is too late. The whole point of embedding the nanoparticles inside PLA is that it remains inside until needed (when temperatures rise above ~300 °). By applying it as a coat, it can be ...
Gimelist's user avatar
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3 votes
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What is the crystal structure of bismuth oxyhydroxyphosphate (BOHP)?

What is the crystal structure of bismuth oxyhydroxyphosphate (BOHP)? Not exactly sure what an answer looks like so here is everything. First off looking at the diffraction pattern from the paper, ...
A.K.'s user avatar
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3 votes
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Fractional index in a chemical formula of metal oxide

There is nothing special about fractional indices in chemistry, it is just a pointer signifying we are dealing with a non-stoichiometric compound. Group 6 metal are known not only for their regular ...
andselisk's user avatar
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3 votes

How to get the coordinates of β12 borophene and χ3 borophene?

Jiang et al. 2018 (DOI: 10.1016/j.jechem.2018.01.026) may be relevant literature? Here's a quote: These include three allotropes named borophene, beta-12(β12) and chi-3(χ3), which have been ...
z1273's user avatar
  • 1,379
3 votes
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Why are nanoliposome encapsulated antibiotics still so unavailable despite being so effective?

Liposomes are the first nano-drug delivery systems that have been successfully translated into real-time clinical applications. So far, all liposomal drugs are designed for intravenous applications ...
Mathew Mahindaratne's user avatar
3 votes

Why are nanoliposome encapsulated antibiotics still so unavailable despite being so effective?

The FDA and other regulatory agencies require that formulations are subjected to a variety of tests. Clinical trials are laborious and expensive. Studies demonstrating efficacy in vitro, in small ...
Buck Thorn's user avatar
  • 21.8k
3 votes

Practical to measure topography of a large area (mm-scale) with scanning probe microscopy (SPM)?

The question you have to ask yourself is what is the length scale of the features you want to study as this will inform you of the correct technique to use. The most common type of SPM is the atomic ...
Pepsi-Joe's user avatar
  • 216
3 votes

Why don't carbon nanotubes behave like quantum dots?

Carbon nanotubes are 1-d materials which are confined in 2 dimensions. You cannot compare it with quantum dots which show confinement in 3 dimensions.The difference in optical properties maybe be ...
Isaac 's user avatar
  • 31
3 votes
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Metallic nanostructures exhibiting charge separation

The type of charge separation described in the question has been identified between hydrogen and gold, the latter a relatively electronegative metal, by Chen et al[1]. Hydrogen adsorbed on neat ...
Oscar Lanzi's user avatar
  • 57.3k
2 votes

Reaction Penetrating Metal Sheet

Depending on the material that the casing is made out of, you could have a mercury or gallium payload. They both are capable of significantly weakening the structures of some metals (such as aluminum)...
fyrepenguin's user avatar
2 votes

Do auto-catalytic aromatic compounds capable of forming self-replicating molecules exist?

You are asking for a very specific, very advanced case namely a compound that: self-replicates on a per-molecule basis associates into sheets; and these sheets again self-replicate To the best of my ...
Jan's user avatar
  • 68k
2 votes

Intensity of “surface plasmon resonance “ absorption peaks for a nano-rod

The intensity of a plasmon resonance is related to the magnitude of the transition dipole moment. Longitudinal resonances have a larger transition dipole moment compared to transverse resonances, and ...
jjgoings's user avatar
  • 2,120
2 votes
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detecting/tracking nano particle

There are a few ways to do nanoparticle tracking, although I'm not sure they will exactly apply to your system. Dynamic light scattering or DLS has been used to get the distribution of nanoparticle ...
Geoff Hutchison's user avatar

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