Nanoparticle preparation, Full story at http://www.physorg.com/news6083.html

[Vino]

http://www.physorg.com/news6083.html

Respected Sirs,
I need to know the way or approach to prepare the silican nanoparticles by chemical processes.Ill be happy to get a reply from ur side.

[solidspin]

Vino -

There are several ways to prepare nanoparticles, depending on your access to either chemicals, lasers or engineering equipment.


the way I make them is chemically, using a "reverse micelle" method, easily found in the literature. It's cheap, and not exotic so it's done at room temperature. The drawback is that you have to mess w/ wet chemistry to get the right recipe. I know you can do it w/ silica, since it acts like carbon (same group on the PT). I do it w/ fluorides and metals, so trickier but still doable.

Via lasers is PLD or pulsed laser deposition. Nice and ala carte, BUT you need access to a PLD chamber, complete w/ laser and precursor compounds. Several at BNL, but you have to go through that nonsense.

Engineering equipment you can do an "electrospray" method, which is doable, but you have to build it.

- does that help?

gleefully spinning solids

[solidspin]

here's another:

Yamaguchi, Akira; Uejo, Fumiaki; Yoda, Takashi; Uchida, Tatsuya; Tanamura, Yoshihiko; Yamashita, Tomohisa; Teramae, Norio. Self-assembly of a silica-surfactant nanocomposite in a porous alumina membrane. Nature Materials (2004), 3(5), 337-341. CODEN: NMAACR ISSN:1476-1122. CAN 141:75317 AN 2004:356903 CAPLUS