Talk:Scienceshow/Nanotechnology

=Comments on existing material on the page=

=Brainstorm=

This section contain ideas we are working on - Please add comments and ideas!

Wettability
 maybe using a hairdryer to make the waves...
 * Nanotubes on a wafer for extreme hydrophobic demonstration
 * TiO thin film with variable wettability and catalytic effect under UV exposure
 * Soap film in lung tissue to keep it from collapsing - can this be demonstrated somehow? Collapsing sol gels?
 * oil thin film calms troubled waters in a dish
 * oil thin films
 * Capillary tubes of glass and plastic - see how far coloured water and soap water is sucked into the two (very little in the plastic tube)
 * lotus effect
 * Superhydrophobic clothes and coatings

Sticktion and adhesion

 * see also the Wettability experiments
 * Bring a gecko
 * Lotus leaf
 * Potatoflour in water…can we do it with silica polishing particles, i guess we can…
 * the opposite effect magneto rheological fluid
 * Electrostatic surface forces:
 * polystyrene 'flamingo' balls on a glass plate and an anti static gun.
 * How does antistatic window cleaner work (is that what ammonia helps on in it?)

Light scattering

 * Mini disk and Cd-rom and the variable density of dots.
 * PDMS with silver nanoparticles in arrays for variable scattering – compare to opals
 * Butterfly wings and beetle shells, birds feathers, oyster shells - and how about certain porcelains and jade?
 * Wool becomes transparent in Benzyl Acohol (Cas No 100-51-6) which is a fairly harmless industrial solvent because it matches the index of refraction of the wool fibers -and what about paper?
 * Tyndall rayleigh scattering experiment in milk or sulfur nanoparticles. White when they get too big (Mie vs Rayleigh).
 * Compare a slowly grown transparent sodium acetate crystal with an opaque quickly grown one. A supersaturated solution of sodium acetate can be made by dissolving 50g sodium acetate trihydrate (CAS 6131-90-4, Sigma aldrich prod no 71193-1KG) in 5 mL of water while heating. Then leave it to cool very slowly without disturbances - and you probably will have to make a fresh solution for each time since small dust particles after use will provide nucleation centers that start the crystallization during cooling. Once its cold, you can pour the solution out on a table and it will crystallize instantly to a warm rod stasing up like a stalagmite. The heat comes from the crystallization process and is used in hand warmers (where a small metal plate is included in the bag with the solution that can make a distubing 'click' to start the crystallization process).
 * Color in nature, Causes of color.

Solar cells from berries

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Carbon

 * Levitation of diamagnetic carbon over magnets
 * Actuating nanotube films in water?
 * Your pencil with the soft carbon. Pyrolithic graphite, the hard, diamond the harder, nanotubes tha hardest.
 * Just for fun - how small can you write with a pen?
 * Something about carbon black?

Nanoparticles

 * Tyndall rayleigh scattering experiment in milk or sulfur nanoparticles. White when they get too big (Mie vs Rayleigh).

Metal nanoparticles

 * Synthesis of gold and silver nanoparticles COlor my nanoworld.
 * Silver
 * gold
 * nanotek.nu
 * Odorless socks with silver colloids]
 * Pregnancy tests with gold colloids
 * Catalysis with Pt nanoparticles – doesnt have to be nano. Can we do a catalysis experiment with Pt particles that make a color disappear or a smell go away?
 * platinum wire burning ethanol.

Catalysis

 * Catalysis with Pt nanoparticles – doesnt have to be nano. Can we do a catalysis experiment with Pt particles that make a color disappear or a smell go away?
 * platinum wire burning ethanol.
 * copper in Zink and sulfuric acid
 * oxidising ammonia
 * Catalase in yeast

Micro chemistry

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Polymers

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 * Slime
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DNA

 * DNA extraction
 * Diffraction and the discovery of DNA laser diffraction exps. movie and images
 * Alice in inverse kk space

Large molecules

 * Polarizable plastic
 * Superabsorbents
 * Crystals, Slime and Nanofabrication
 * Nylon -nanotek.nu

Magnetic nanoparticles

 * Magnetofluids -nanotek.nu
 * Levitating carbon See at sci toys
 * Ferrofluids Ferrolabs sells 200ml bottles.
 * Ferrofluid educational kits from Ferrotec and more information on their website.
 * Demoexperiments from Ferrotec

Electric nanosystems

 * Molecular break junction and quantized conductivity
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 * Nanowires - mercury on aluminium... or can we make them some other ways? tin whiskers?

Build your own STM

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 * pushing a wall (AFM /tilted mirror exp)

SERS

 * SERS

Self assembled monolayers

 * nanotek.nu

=Questions=
 * Can we observe biotin-actin interaction in microscopes and with the eye if the molecules are attached to larger beads?
 * is there a hands-on Raman demonstation?
 * Icebear fur should be UV wave guides to help produce vitamins in the skin
 * FLuorescence and quantum dots
 * What bacteria produc nanowires - some should make iron oxide nanowires
 * Could we make some on clay, concrete and soils and their nanocomponents?

=Resources=
 * institute of physics teachers
 * nanotek.nu
 * several chemistry related nanoactivities
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 * General Chemistry demonstration exps list