Rubik's Cube® used by permission of Seven Towns Ltd. … · deposition parameters we could obtain...
Transcript of Rubik's Cube® used by permission of Seven Towns Ltd. … · deposition parameters we could obtain...
Rubik's Cube® used by permission of Seven Towns Ltd. www.rubiks.com
Silica films were grown from DADBS with different thicknesses.
Gold nanoparticle films 0.5g/min -> 2g/min
0.25g/min
Nanoparticle deposition by a direct liquid injector CVD system B. De Roo1*, M. Vervaele1, M. Rajala2, H. Guillon3 and J.P. Locquet1
1 Department of Physics and Astronomy, KU Leuven, Leuven, Belgium 2 DCA Instruments Oy, Finland
3 Kemstream, France * contact: [email protected]
We present a novel deposition system for the deposition of nanoparticles in a controlled and reproducible way. This system is based on a chemical vapor deposition system which makes use of two direct liquid injectors to deliver nanoparticles into a vacuum system. By changing the
deposition parameters we could obtain a thin layer of gold nanoparticles. We could vary the appearance of these nanoparticles by changing the deposition parameters.
We have grown gold nanoparticles films with different gold nanoparticles flow speeds. By changing the flow speed we could control
the aggregation state of nanoparticles and with a flow 0.25g/min we could obtain well dispersed nanoparticles on a silica substrate.
Goal and concepts Results
Conclusions
Deposition of premade nanoparticles
Better control on size and dispersity
Density control
Vaporization of nanoparticles dipersion
Functionlization possible
Multi-possibilities of solvent
System Direct liquid injector
We like to thank the EU for their support through the FP7-grant SNOWCONTROL project (263510). Project website: fys.kuleuven.be/vsm/snowcontrol. JWS thanks the Flemish Hercules stichting for its support in Her/08/25. We would also like to thank the EU for their support in the COSMOPHOS project and the MODENPTOX project.
Setup
Silica substrate
NP thin film
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.02Theta (°)
3
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Inte
nsity (
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0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.02Theta (°)
5
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nsity (
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Thickness (nm) Degree (°C) Time (min)
solution flow (g/min)
4.8 600 15 0.2
↓ t 9.5 600 25 0.2
23.1 600 50 0.2
Thickness (nm) Degree (°C) Time (min)
solution flow (g/min)
9.4 600 25 0.2
↑ T 4.7 550 25 0.2
3.8 500 25 0.2
1.0 2.0 3.0 4.0 5.0 6.0 7.02Theta (°)
2
5
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10000000
2
Inte
nsity (
counts
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Gold nanoparticles in cyclo-hexane