logging in or signing up nanotechnology saravanans11 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 666 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: February 06, 2010 This Presentation is Public Favorites: 3 Presentation Description No description available. Comments Posting comment... By: kxswami (27 month(s) ago) Very Nice presentation. I am preparing for a presentation on TiO2 nanoparticles and I could use some of your introduction slides in my presentation. Could you please send your presentaion at kxswami@yahoo.com. Thanks Saving..... Post Reply Close Saving..... Edit Comment Close By: engrami (28 month(s) ago) Please send me this presentation to " i-ramo@live.com " Thank You .. Saving..... Post Reply Close Saving..... Edit Comment Close By: karthik122 (39 month(s) ago) it s ossam Saving..... Post Reply Close Saving..... Edit Comment Close By: karthik122 (39 month(s) ago) I LIKE YAR Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Nanotechnology : Nanotechnology Nano size: Generally 1-100 nm The European Science Foundation definition Nanoscale was seen to range from 1 to 1000 nm Particle size classification : Particle size classification 1 nm Chemical drug 5 nm Protein 10 nm DNA 20-50 nm Blood vessel pore 50 nm Carbon nanotube 100-500 nm Liposome nanoparticle 1000 nm (1 µm) bacteria 10 µm Cell 50 µm Human hair Cell membrane pore : Cell membrane pore A side view of a pore (blue dots) in the water-channel protein AQP1, which pierces the cell membrane. Cell exterior is at top, interior at bottom. The pore is about 2.8 angstroms across at its narrowest. Advantages of nanoparticles : Advantages of nanoparticles Advantage of nanoparticles - To deliver more effectively: Enhance amount permeate at favorable site, sustain release of actives, increase mucoadhesive (liposome, neosome, nanoparticle, microemulsion, nanoemulsion) Nano-powder (Zno, TiO2 etc) Carbon nanotube Titanium dioxide nano powder : Titanium dioxide nano powder Toxicology of nanoparticles : Toxicology of nanoparticles Size Surface area Surface chemistry Solubility Shape Material type 1) biodegradable 2) Non-biodegradable * Depend on phagocytic clearance Exposure routes : Exposure routes Phagocytosis : Phagocytosis Most Dangerous 2 1 3 Limited Experimental toxicology of manufactured nanomaterials reported to date : Limited Experimental toxicology of manufactured nanomaterials reported to date Fullerenes Carbon nanotube Metal oxide nanoparticles (ZnO, TiO2) Slide 13: Eight allotropes of carbon: a) Diamond, b) Graphite, c) Lonsdaleite, d) C60 (Buckminsterfullerene or buckyball), e) C540, f) C70, g) Amorphous carbon, and h) single-walled carbon nanotube or buckytube. Research work in nanoparticles toxicology : Research work in nanoparticles toxicology Use carbon single wall carbon nanotube (SWCNT) as model SWCT do not induce cell damage but stimulate fibroblast proliferation and collagen synthesis→ Lung Fibrosis Small well disperse SWCNT penetrate lung tissue more efficiently than agglomeration SWCT induce angiogenesis Nanomaterialization of Chitin-chitosan: Approaches and potential applications : Nanomaterialization of Chitin-chitosan: Approaches and potential applications Nanomaterials: the materials which exhibit the special properties due to the function in nanometer range Formation of nanomaterials : Formation of nanomaterials Molecolar Architecture: Building from molecular components, Chemical modification Size reduction: Constructing from large entities, Depolymerization Chitosan Nanosphere : Chitosan Nanosphere Synthesis Organic base system: mPEG grafted phthaloylchitin Water base system: Chitosan-mPEG-CA Self assembly property : Self assembly property Slide 19: PEG UV-screening Nanocarrier Based on polyvinylalcohol-co-vinylcinnamate : UV-screening Nanocarrier Based on polyvinylalcohol-co-vinylcinnamate Chemical modification Amphiphilic polymer: self-assembly: PVA combined UV protective substances You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
nanotechnology saravanans11 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 666 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: February 06, 2010 This Presentation is Public Favorites: 3 Presentation Description No description available. Comments Posting comment... By: kxswami (27 month(s) ago) Very Nice presentation. I am preparing for a presentation on TiO2 nanoparticles and I could use some of your introduction slides in my presentation. Could you please send your presentaion at kxswami@yahoo.com. Thanks Saving..... Post Reply Close Saving..... Edit Comment Close By: engrami (28 month(s) ago) Please send me this presentation to " i-ramo@live.com " Thank You .. Saving..... Post Reply Close Saving..... Edit Comment Close By: karthik122 (39 month(s) ago) it s ossam Saving..... Post Reply Close Saving..... Edit Comment Close By: karthik122 (39 month(s) ago) I LIKE YAR Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Nanotechnology : Nanotechnology Nano size: Generally 1-100 nm The European Science Foundation definition Nanoscale was seen to range from 1 to 1000 nm Particle size classification : Particle size classification 1 nm Chemical drug 5 nm Protein 10 nm DNA 20-50 nm Blood vessel pore 50 nm Carbon nanotube 100-500 nm Liposome nanoparticle 1000 nm (1 µm) bacteria 10 µm Cell 50 µm Human hair Cell membrane pore : Cell membrane pore A side view of a pore (blue dots) in the water-channel protein AQP1, which pierces the cell membrane. Cell exterior is at top, interior at bottom. The pore is about 2.8 angstroms across at its narrowest. Advantages of nanoparticles : Advantages of nanoparticles Advantage of nanoparticles - To deliver more effectively: Enhance amount permeate at favorable site, sustain release of actives, increase mucoadhesive (liposome, neosome, nanoparticle, microemulsion, nanoemulsion) Nano-powder (Zno, TiO2 etc) Carbon nanotube Titanium dioxide nano powder : Titanium dioxide nano powder Toxicology of nanoparticles : Toxicology of nanoparticles Size Surface area Surface chemistry Solubility Shape Material type 1) biodegradable 2) Non-biodegradable * Depend on phagocytic clearance Exposure routes : Exposure routes Phagocytosis : Phagocytosis Most Dangerous 2 1 3 Limited Experimental toxicology of manufactured nanomaterials reported to date : Limited Experimental toxicology of manufactured nanomaterials reported to date Fullerenes Carbon nanotube Metal oxide nanoparticles (ZnO, TiO2) Slide 13: Eight allotropes of carbon: a) Diamond, b) Graphite, c) Lonsdaleite, d) C60 (Buckminsterfullerene or buckyball), e) C540, f) C70, g) Amorphous carbon, and h) single-walled carbon nanotube or buckytube. Research work in nanoparticles toxicology : Research work in nanoparticles toxicology Use carbon single wall carbon nanotube (SWCNT) as model SWCT do not induce cell damage but stimulate fibroblast proliferation and collagen synthesis→ Lung Fibrosis Small well disperse SWCNT penetrate lung tissue more efficiently than agglomeration SWCT induce angiogenesis Nanomaterialization of Chitin-chitosan: Approaches and potential applications : Nanomaterialization of Chitin-chitosan: Approaches and potential applications Nanomaterials: the materials which exhibit the special properties due to the function in nanometer range Formation of nanomaterials : Formation of nanomaterials Molecolar Architecture: Building from molecular components, Chemical modification Size reduction: Constructing from large entities, Depolymerization Chitosan Nanosphere : Chitosan Nanosphere Synthesis Organic base system: mPEG grafted phthaloylchitin Water base system: Chitosan-mPEG-CA Self assembly property : Self assembly property Slide 19: PEG UV-screening Nanocarrier Based on polyvinylalcohol-co-vinylcinnamate : UV-screening Nanocarrier Based on polyvinylalcohol-co-vinylcinnamate Chemical modification Amphiphilic polymer: self-assembly: PVA combined UV protective substances