Dear all,
I'm working on on the fabrication of Au/PVA polymer nanocomposite thin films. The synthesis of the Au nanoparticles is realized in-situ by photoreduction of a metallic salt followed by thermal annealing of the films.
I would like to try rapid thermal annealing (using flash lamp), around 300-400 °C for a few seconds to see if I can minimize the diffusion length of the gold atoms during the nanoparticles formation process.
Does anyone know what will be the effect of such an intense annealing on the polymer, will it burn or produce gases that will compromise the heating chamber? (my solvent is water and the I use HAuCl4 as metallic precursor and the film is deposited on glass substrate)
Regards
Dear Elie,
we do work with annealed films on polymers. There is a company called Solayer that manufacturer flash annealing systems. I guess they can answer this question. I could share a contact if you can not reach them via their website.
I would expect that the sheet resistance of the Au will improve. But guess you know this. In case you want measure or image the effect of annealing on metal films, please feel free to contact us. That´s our focus.
BR, Marcus
Dear Marcus,
Thank you for your answer.
Concerning the characterization of my samples, they are in fact most of the time non conductive composite films, as the %w of metal we put in the polymer matrix usually does not allow to reach the percolation threshold. Would your electrical characterization still be interesting? Could it be a way to map the nanoparticles distribution in the films in the volume?
Regards,
Elie
Imaging the distribution of conductive nano particles in materials is one application for our electrical imaging solutions. Please refer also to: www.sheet-resistance-testing.com which provides an overview on this topic. Please feel free to contact me directly so we can have phone or web discussion.
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