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What is the difference between gold colloids and gold nanoparticles?
Gold colloids have multiple definitions. They have been used for many years as a dietary supplement (see http://www.purestcolloids.com). Gold colloids provide the body with minerals to maintain optimum health. They have been used for many years as a therapeutic for arthritis. They have also been used in lateral flow applications such as in pregnancy tests (see http://www.bbigold.com). Gold nanoparticles, on the other hand, must possess properties that are specific for nanotechnology applications. Sample nanotechnology applications include Resonance Light Scattering (RLS), Surface Enhanced Raman (SERS), in-vivo photothermal cancer therapy, imaging, and diagnostics. These applications demand monodispersity in size and shape with highly reactive surfaces because these applications depend on the quality of the individual nanoparticles, not just the properties of the nanoparticles in bulk. This is the definition of nanotechnology. In order to make gold nanoparticles suitable for these applications, the gold nanoparticles must have the following characteristics: 1. Provide rod shapes for in vivo applications. 2. Spherical gold nanoparticles that are not manufactured using thiol or citrate chemistry which result in unreactive, polydisperse gold nanoparticles. 3. Conjugations that are based on solid, covalent bonds, not adsorption which can results in lost conjugations. For gold nanoparticles see Nanopartz at http://www.nanopartz.com.
Example of colloids?
Examples: colloidal gold, milk, mist, styrofoam, fog, mayonnaise, cosmetic gels etc.
When colloids are filtered do they leave residue?
Yes, colloids can leave a residue when filtered. Colloids are larger particles that can be trapped by the filter, resulting in a residue left behind after filtration.
Are all colloids negatively charged?
No, not all colloids have a negative charge. Colloids can have a positive, negative, or neutral charge depending on the type of particles present in the dispersion and the interactions between those particles.
Can colloids conduct current?
no. not really
Are brownies colloids?
After my opinion they are not colloids.
What has the author Fletcher Low written?
Fletcher Low has written: 'A study of the stability of Bredig gold sols ..' -- subject(s): Colloids
What is the difference between gold colloids and gold nanoparticles?
Gold colloids have multiple definitions. They have been used for many years as a dietary supplement (see http://www.purestcolloids.com). Gold colloids provide the body with minerals to maintain optimum health. They have been used for many years as a therapeutic for arthritis. They have also been used in lateral flow applications such as in pregnancy tests (see http://www.bbigold.com). Gold nanoparticles, on the other hand, must possess properties that are specific for nanotechnology applications. Sample nanotechnology applications include Resonance Light Scattering (RLS), Surface Enhanced Raman (SERS), in-vivo photothermal cancer therapy, imaging, and diagnostics. These applications demand monodispersity in size and shape with highly reactive surfaces because these applications depend on the quality of the individual nanoparticles, not just the properties of the nanoparticles in bulk. This is the definition of nanotechnology. In order to make gold nanoparticles suitable for these applications, the gold nanoparticles must have the following characteristics: 1. Provide rod shapes for in vivo applications. 2. Spherical gold nanoparticles that are not manufactured using thiol or citrate chemistry which result in unreactive, polydisperse gold nanoparticles. 3. Conjugations that are based on solid, covalent bonds, not adsorption which can results in lost conjugations. For gold nanoparticles see Nanopartz at http://www.nanopartz.com.
Example of colloids?
Examples: colloidal gold, milk, mist, styrofoam, fog, mayonnaise, cosmetic gels etc.
How are liquid-liquid colloids like mayonnaise are called?
These colloids are called emulsions.
What are the negative effects of colloids on the environment?
some colloids cause pollution in the environment...some colloids release cfc's that contributes to the ozone layer depletion...
What is the visibility of colloids?
colloids are not visible due to their tiny particle size, (when the colloid is stable).
When colloids are filtered do they leave residue?
Yes, colloids can leave a residue when filtered. Colloids are larger particles that can be trapped by the filter, resulting in a residue left behind after filtration.
Is pizza a colloids?
no
Butter toothpaste paint whipped cream and frogs are all colloids?
Frogs are not colloids, they are amphibians.
What do gelatin milk and stick deodorant have in common?
They are all colloids.they are all colloids
How are solutions and colloids alike?
how are solutions suspensions and colloids alike
