1 / 20

Nano Fabrication

Nano Fabrication. Nano Fabrication. Nano fabrication. PREPARATION OF NANO-MATERIALS. Ball Milling. Inert-gas Condensation. The sol-gel process may be described as. ”Formation of an oxide network through polycondensation reactions of a molecular precursor in a liquid”.

nitesh
Download Presentation

Nano Fabrication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nano Fabrication Nano Fabrication

  2. Nano fabrication

  3. PREPARATION OF NANO-MATERIALS

  4. Ball Milling

  5. Inert-gas Condensation

  6. The sol-gel process may be described as ”Formation of an oxide network through polycondensation reactions of a molecular precursor in a liquid” A sol is a stable dispersion of colloidal particles or polymers in a solvent. The particles may be amorphous or crystalline. An aerosol is particles in a gas phase, while a sol is particles in a liquid, A gelconsists of a three dimensional continuous network, which encloses a liquid phase, In a colloidal gel, the network is built from agglomeration of colloidal particles.

  7. CERAMIC NANOTECHNOLOGY What is colloids ? Tyndall Effect

  8. Tyndall Effect

  9. Sol-Gel Synthesis • Factors in determining properties • Rate of Hydrolysis • Drying • Ability to grow nano-sized particles in different matrices

  10. Fabrikasi nanomaterial dan nanostruktur Media • Fase Uap : Pembuatan thin film Atomic Layer Deposition (ALD) • Fase Liquid : Proses coloid untuk pembentukan annopartikel dan self assembley pada monolayers • Fase solid : Segretasi untuk pembuatan parikel metalik di dalam matrik glass dan induksi polimerisasi doa photon pada fabrikasi kristalphotonik tiga dimensi • Fase Hybrid : Penumbuhan vapor-liquid-solid (VLS) pada nano wires

  11. Berdasarkan Bentuk Produk Nanopartikel : Proses coloidal , flame combution ,dan segretasi Nanorods : templed-based electroplating , solution-liquid-solid growth (SLS) , spontanious anisotropic growth Thin film : molecular beam epitaxy (MBE) amd atomic layer deposition (ALD) Nanostructured bulk materials :photon bandgap crystals by self essembly of nanosized particles.

  12. Nano fabrication: bottom-up Self-assembly: ‘Spontaneous change in a system from a more disorganised state to an ordered or structured state.’ e.g. amphiphilic lipids when placed in water will form bilayers, vesicles or micelles. - cell membranes e.g. DNA - complementary strands from Dr Schroeder’s web page, college of St. Scholastica

  13. Self Assembled Monolayers (SAM’s) strong interaction between head group and surface, e.g. thiol on Au, the tail can then be adapted at will. SAM’s are useful as model substrates, biomembrane mimetics, for studying electrical conduction through individual molecules, chemical patterning of surfaces etc. alkanethiol on Au{111}. Prof. Weiss Group, Penn State University

  14. Nano fabrication: top-down A ‘playable nanoguitar’ made in Cornell University NEMS group 30 nm W lines on Si; from the University of Glasgow department of Electrical and electronic engineering lithography group

  15. Why is Nanotechnology important?: Nanomaterials titania - possible applications in enhanced photocatalysis • thin films • carbon nanotubes • inorganic nanotubes • nanowires • nanoparticles • quantum dots Mayya et al.; Nano Lett. 2001, 1 (12), p.727 Lauhon, Gudiksen, Wang, and Lieber; Science 2002, 420, p.57

  16. TERIMAKASIH TERIMAKASIH

More Related