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Nano-Biomimetics

Nano-Biomimetics. Team Г. Nano-biomimetics?. What is nano-biomimetics? Biological self-assembly Viral assembly Gecko Feet. What is nano-biomimetics?. Utilizes biological mechanisms to create materials Mimicking biological self-assembly processes

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Nano-Biomimetics

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  1. Nano-Biomimetics Team Г

  2. Nano-biomimetics? • What is nano-biomimetics? • Biological self-assembly • Viral assembly • Gecko Feet

  3. What is nano-biomimetics? • Utilizes biological mechanisms to create materials • Mimicking biological self-assembly processes • Using single biological units as a building block along with inorganic materials • Mimics biology at the molecular level • Synthesizing structures that mimic biological structures

  4. Utilizing biological mechanisms • Atom-precise manipulation yields composite materials and nano-scale structures with desirable properties • Parallel self-assembly processes achieve precision with high speed and reproducibility

  5. Biological self-assembly • Bottom-up fabrication process • Continuing miniaturization of devices in nanotechnology • Nature already assembles its smallest components into ordered structures

  6. Biological self-assembly: applications • Genetically Engineered Proteins for Inorganics (GEPIs) • Methods • Biopatterning • Neuron growth on patterned substrates

  7. Biological self-assembly: applications

  8. Viral assembly: biology • Abalone shell mostly chalk, but 3000x stronger because of crystal structure • Very difficult to assemble crystals, requires precise control in 3-D

  9. Viral assembly: biomimetic • Genetically engineered virus attaches to molecule of building material • Viruses orient themselves in solution, producing well-ordered liquid crystal

  10. Procedure can easily scale up Multiple applications Better materials Viral assembly: applications

  11. Mimicking biological structures • Top-down approach using lithography, scanning probes, CVD, sputter coating, and many other techniques normally unassociated with biology • Requires very precise manipulation

  12. Gecko feet: biology • Millions of hairs called setae • Fiber radius is nanometer-scale • Adhesion due to van der Waals and capillary forces

  13. Gecko feet: biomimetic • Use electron beam lithography and dry etching to create synthetic polymer hairs • Attach to flexible base • Palm-sized piece can support a human

  14. Gecko feet: applications

  15. Nano-biomimetics! • Create materials with novel properties • Synthesize existing bio-materials in larger quantities • Integrate biomolecules and materials with inorganic ones for hybrid systems

  16. References • Bio-assembly • Sarikaya, Mehmet. "Moleucular biomimetics: nanotechnology through biology.“ Nature Materials Sept. 2003. • Gyorvary, Erika S. "Biomimetic Nannostructure Fabrication: Nanolithographic Lateral Patterning and Self-Assembly of Functional Bacterial S-Layers at Silicon Supports." 11 Dec. 2002. Nano Letters. Vol. 3. 2004. 315+ • Zhang, Shuguang. "Fabrication of novel biomaterials through molecular self-assembly." Nature biotechnology Oct. 2003. • Quinion, Michael. "Turns of Phrase: Biomimetics." World Wide Words. 22 Nov. 1997. <http://www.worldwidewords.org>. • Viral Assembly: • http://www.sunlandimports.com • http://www.sciencemag.org/cgi/content/full/296/5569/892 • http://www.pnas.org/cgi/content/full/100/12/6946 • http://web.mit.edu/giving/spectrum/fall05/building_on_nature.html • http://pubs.acs.org/cgi-bin/sample.cgi/nalefd/2004/4/i01/html/nl0347536.html • Gecko foot: • http://www.andrew.cmu.edu/user/gshah/Project_modeling.htm • http://photos.wildmadagascar.org/images/uroplatus_fimbriatus-0143.shtml • http://www.houstonvoice.com/2004/6-18/view/actionalert/action.cfm • http://onnes.ph.man.ac.uk/nano/Publications/Naturemat_2003.pdf • Spiderman: http://spiderman.sonypictures.com

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