Production of nano-CeO2 is a chemistry issue not a physics or semiconductor issue.... Please prove me wrong as I learn a lot more this way - but I believe what you want to do is impossible. Now emulsions can be produced by flow mechanisms through certain (small) geometries and I can see 2 flows of different chemicals reacting to produce the desired end game.

Microfluidic devices for the synthesis of nanoparticles

Article Fabrication of size-controlled CeO2 microparticles by a micr...

thanks for your answers

Alan F Rawle that is right, it is a chemistry issue. i need a microfluidic device for co-precipitation method .

Stefan Ručman The Drexler quotation comes to my mind: 'The micron scale is volumetrically 109 times larger than the nanometer scale. Confusing microtechnology with molecular technology is like confusing an elephant with a ladybug'

I honestly dont know anymore what is nanotechnology Alan F Rawle it suppose to be chemistry of interactions below 100nm, co-precipitation and sol gel are not really anything special for nanoworld. they can however use microfluidic devices to make nanostructures.

hi everyone.

@ Mohadese Shahriari

You may prepare nano-CeO2 using the ceric ammonium nitrate (CAN) solution through the process discussed in the papers.

Mukherjee, A.; Adak, M. K.; Chowdhury, A.; Dhak, D.; Synthesis of Cost-effective Trimetallic Oxide Nanocatalysts for the Reduction of Nitroarenes in Presence of NaBH4 in an Aqueous Medium, Current Catalyst, 2019, doi.10.2174/2211544708666181129100631.

Adak, M. K.; Sen, A.; Mukherjee, A.; Sen, S.; Dhak, D.; Removal of fluoride from drinking water using highly efficient nano-adsorbent, Al(III)-Fe(III)-La(III) trimetallic oxide prepared by chemical route, J. Alloys Compd. 2017, 719, 460-469.