----- Original Message ----- From: Ivan Anderson <[email protected]> To: <[email protected]> Sent: Friday, 5 November 1999 22:27 Subject: Aggregate structures (was round conductive pot idea)
> Have just read a chapter in 'Introduction to Modern Colloid Science - > Robert J Hunter', called aggregate structures, in which he notes the > "Fractal description of aggregate structure". It seems that colloidal > sols aggregate in fractal patterns, that is if the base pattern is 9 > atoms in number, then the next size of aggregate will consist of 9 of > these smaller arrangements and so on. > > Whether colloids aggregate or not (or how fast this proceeds) depends > on the attractive vs the repulsive forces and the thermodynamics of > the solution. > > Ivan > > ----- Original Message ----- > From: Ivan Anderson <[email protected]> > To: <[email protected]> > Sent: Friday, 5 November 1999 14:37 > Subject: Re: CS>round conductive pot idea > > > > Good question James, > > > > I don't know for sure, but I suspect there are crystalline > structures > > of silver ions which have a particular shape and number of > particles, > > and which are reasonably stable. These crystals (if they exist) may > > resist the joining of other ions or partly formed crystals, > > thermodynamically. > > > > Sounds good anyway. > > > > Ivan. > > > > ----- Original Message ----- > > From: James Osbourne, Holmes <[email protected]> > > To: <[email protected]> > > Sent: Friday, 5 November 1999 06:24 > > Subject: RE: CS>round conductive pot idea > > > > > > > Hi Guys, > > > > > > This sounds highly possible. But if so, what controls the final > > size? > > > > > > James Osbourne Holmes > > > [email protected] > > > > > > > > > -----Original Message----- > > > From: Ivan Anderson [SMTP:[email protected]] > > > Sent: Thursday, November 04, 1999 2:07 AM > > > To: [email protected] > > > Subject: Re: CS>round conductive pot idea > > > > > > Hi Marshal, James H-M, > > > > > > I believe that the silver, which has been disassociated during > > > generation at low current density, exist as single silver ions not > > > clumps. > > > It is not until the power is withdrawn that the ions flocculate > into > > > stable clusters of multi-ion particles. I remember Bob Lee saying > > > something along these lines, some time ago. > > > In electroplating a silver anode is used to replace the silver > ions > > > deposited at the cathode. There are many parameters which are > > > manipulated in silver plating to provide a smooth shiny finish, > not > > > least being the metal that the silver is being deposited on. A > > porous > > > powdery finish is one of the major problems to be overcome in the > > > electrodeposition of metals. > > > > > > Ivan. > > > > > > > > -- > > The silver-list is a moderated forum for discussion of colloidal > silver. > > > > To join or quit silver-list or silver-digest send an e-mail message > to: > > [email protected] -or- > [email protected] > > with the word subscribe or unsubscribe in the SUBJECT line. > > > > To post, address your message to: [email protected] > > > > List maintainer: Mike Devour <[email protected]> > > >
