logging in or signing up nano_technology- the harbinger of future. Darkknight_Bhawal 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: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 185 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: October 03, 2011 This Presentation is Public Favorites: 2 Presentation Description This is a short Introduction to the Basic information on Nano-technology. Comments Posting comment... By: Darkknight_Bhawal (5 month(s) ago) Sir, sorry for this delay of reply. Plz contact me directly via e-mail (@ prateek.bhawal@gmail.com) if u genuinely require my ppt. Saving..... Post Reply Close Saving..... Edit Comment Close By: sudarshan765 (7 month(s) ago) hi this is sudarshan asst., professor of mech., dept., and irequest you to pls give the permission for to download ur ppt presentation. thank you........ Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: The Harbinger of Future !!Slide 2: Chouksey Engineering College What is Nanotechnology ? Nanotechnology is an umbrella term that is used to describe a variety of techniques to fabricate materials and devices on the nanoscale. 2 Chouksey Engineering CollegeSlide 3: What is Nanoscale? 1.27 × 10 7 m 0.22 m 0.7 × 10 -9 m Fullerenes C 60 12,756 Km 22 cm 0.7 nm 10 millions times smaller 1 billion times smaller 3 Chouksey Engineering CollegeSlide 4: Chouksey Engineering CollegeSlide 5: Chouksey Engineering College Ant = 5mm Head of Pin =1-2 mm Human hair = 10-120 µm diameter Red Blood Cells = 2-5 µm DNA = 2-12 nm Carbon Nanotube =1.3nm diameter Carbon Bucky Ball = 1 nmSlide 6: 2000 Years Ago – Sulfide nanocrystals used by Greeks and Romans to dye hair. 1000 Years Ago (Middle Ages) – Gold nanoparticles of different sizes used to produce different colors in stained glass windows. 1974 – “Nanotechnology” - Taniguchi uses the term nanotechnology for the first time. 1981 – IBM develops Scanning Tunneling Microscope. This microscope evolved to allow the manipulation of individual atoms and molecules in the field of Nano technology. 1985 – “ Buckyball ” - Scientists at Rice University and University of Sussex discover C 60 1991 – Carbon nanotube discovered by S. Iijima History of Nanotechnology 6 Chouksey Engineering College The idea of nanotechnology was born in December 29, 1959 when physicist Richard Feynman gave a lecture exploring the idea of building things at the atomic and molecular scale . He first conceived the idea of molecular manufacturing in his speech, “There’s Plenty of Room at the Bottom.” He imagined that the entire Encyclopedia Britannica can be written on the head of a pin. Richard Feynman.Slide 7: Fields Chouksey Engineering CollegeSlide 8: Carbon NanoTubes Medicine Information Technology Nano Robots Energy Nanotechnology Applications 8 Stinger: Targeted Drug Delivery Nano Transistor OLED Nanorobot Aerogel NANO FILTERS Chouksey Engineering CollegeSlide 9: Carbon NanoTubes The joining of two carbon nanotubes Carbon Nanotubes:: I n 1991, tiny, super-strong rolls of carbon atoms known as carbon nanotubes were created. These are six times lighter, yet 100 times stronger than steael . This rotating picture is actually a model of carbon nanotube, the strongest and stiffest materials discovered till to date. CNTs also known as buckytubes are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1 9 Chouksey Engineering CollegeSlide 10: Single Walled Nanotubes (SWNT) 10 Single-walled nanotubes have a diameter of close to 1 nanometer, with a tube length that can be many millions of times longer. The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder. The way the graphene sheet is wrapped is represented by a pair of indices ( n , m ) called the chiral vector Single-walled nanotubes are an important variety of carbon nanotube because they exhibit electric properties Chouksey Engineering CollegeSlide 11: There are two models of description of these MWNT:: In the Russian Doll model, sheets of graphite are arranged in concentric cylinders In the Parchment model, a single sheet of graphite is rolled in around itself, resembling a scroll of parchment or a rolled newspaper Multi Walled Nano Tubes (MWNT) Multi-walled nanotubes (MWNT) consist of multiple rolled layers (concentric tubes) of graphite 11 Chouksey Engineering CollegeSlide 12: Nanoelectronics combine biology, chemistry, physics, engineering, and computer science, i.a. computer chips (nanochips), nanomotors, nanoelectronics to body’s nervous system Nanotechnology to the rescue of overheating computer chips For Electronics Nokia Morph Cell Phone With NanotechnologySlide 13: For Energy Capture and Storage Sunlight storage, i.e. titanium dioxide. This material is able to absorb solar energy when combined with a special dye. Then the energy may be converted to electrical energy. Fig. 3- New technologies for clean energy generation and storage, such as using hydrogen to supply fuel cellsSlide 14: NEED FOR NANOTECHNOLOGY Allows the placement of small structures placed with precision,simplicity and low cost Leads to economic growth Enhances national security Improves the quality of life Leads to job creation 14 Chouksey Engineering CollegeSlide 15: IMPS College Of Engineering & Technolgy . Nanoscale Approaches and Fabrication Top -down Approaches Bottom -up Approaches Create smaller objects using Larger objects They arrange smaller components in to more complex. Uses principles of molecular recognition Layer -by-layer s elf assembly 15 Chouksey Engineering CollegeSlide 16: With NT, we can create unique materials and products which are: Stronger Lighter Cheaper Durable Precise Computers can become a billion times faster and a million times smaller Automatic Pollution Cleanup Manufacturing at almost no cost End of Illnesses (i.e. cancer, heart disease) Universal Immunity (i.e. aids, flu) Body Sculpting (i.e. change your appearance) Industrial Medical Material Advantages 16 Chouksey Engineering CollegeSlide 17: Health and safety issues Since the effects are unpredictable, Nano -particles may cause serious illness or damage to human body. Untraceable destructive weapons of mass destruction. Social & Political issues Creates social strife through increasing wealth gap Advisability of increasing scope of the technology creates political dilemma 17 Disadvantages of Nanotechnology Chouksey Engineering CollegeSlide 18: Miniature Weapons and Explosives Misuse of Millitary Supplies. Uncontrolled Nanomachines (Grey Goo Senario ) Self Replicating Nanomachines ( Nanobots ) Illegal Monitoring Illegal Tracking Potential DangerSlide 19: Exposure of human and the environment to nanomaterials at different stages of product life cycle “ Grey-goo ” It is a hypothetical situation where self replicating nanobots go out of control, and consume all matter on earth. Environmental issues Nanopollution is created by toxic wastes from nanomaterial manufacturing Enhances Global warming in the long run “ The Living Fog ” formed by billions of replicating nanobots gone mad 19 Chouksey Engineering College G r e y G o oSlide 20: Chouksey Engineering College Today’s technology is finally realizing the ideas of von Neumann in the 1940s and Feynman in the late 1950s. In the next 50 years, machines will get increasingly smaller.. With this technology, space travels, computers, weapons, energy products, medicines will be revolutionised . If the researchers in this field put together an ethical set of guidelines and follow them then we should be able to develop nanotechnology safely. ConclusionSlide 21: 21 Chouksey Engineering College Thank You Presented by:- PRATEEK BHAWAL 3 rd Sem. ET&T. c.e.c . bILASPUR Swati sharma 3 RD SEM. EEE . c.E.C . BILASPUR You do not have the permission to view this presentation. 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nano_technology- the harbinger of future. Darkknight_Bhawal 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: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 185 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: October 03, 2011 This Presentation is Public Favorites: 2 Presentation Description This is a short Introduction to the Basic information on Nano-technology. Comments Posting comment... By: Darkknight_Bhawal (5 month(s) ago) Sir, sorry for this delay of reply. Plz contact me directly via e-mail (@ prateek.bhawal@gmail.com) if u genuinely require my ppt. Saving..... Post Reply Close Saving..... Edit Comment Close By: sudarshan765 (7 month(s) ago) hi this is sudarshan asst., professor of mech., dept., and irequest you to pls give the permission for to download ur ppt presentation. thank you........ Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: The Harbinger of Future !!Slide 2: Chouksey Engineering College What is Nanotechnology ? Nanotechnology is an umbrella term that is used to describe a variety of techniques to fabricate materials and devices on the nanoscale. 2 Chouksey Engineering CollegeSlide 3: What is Nanoscale? 1.27 × 10 7 m 0.22 m 0.7 × 10 -9 m Fullerenes C 60 12,756 Km 22 cm 0.7 nm 10 millions times smaller 1 billion times smaller 3 Chouksey Engineering CollegeSlide 4: Chouksey Engineering CollegeSlide 5: Chouksey Engineering College Ant = 5mm Head of Pin =1-2 mm Human hair = 10-120 µm diameter Red Blood Cells = 2-5 µm DNA = 2-12 nm Carbon Nanotube =1.3nm diameter Carbon Bucky Ball = 1 nmSlide 6: 2000 Years Ago – Sulfide nanocrystals used by Greeks and Romans to dye hair. 1000 Years Ago (Middle Ages) – Gold nanoparticles of different sizes used to produce different colors in stained glass windows. 1974 – “Nanotechnology” - Taniguchi uses the term nanotechnology for the first time. 1981 – IBM develops Scanning Tunneling Microscope. This microscope evolved to allow the manipulation of individual atoms and molecules in the field of Nano technology. 1985 – “ Buckyball ” - Scientists at Rice University and University of Sussex discover C 60 1991 – Carbon nanotube discovered by S. Iijima History of Nanotechnology 6 Chouksey Engineering College The idea of nanotechnology was born in December 29, 1959 when physicist Richard Feynman gave a lecture exploring the idea of building things at the atomic and molecular scale . He first conceived the idea of molecular manufacturing in his speech, “There’s Plenty of Room at the Bottom.” He imagined that the entire Encyclopedia Britannica can be written on the head of a pin. Richard Feynman.Slide 7: Fields Chouksey Engineering CollegeSlide 8: Carbon NanoTubes Medicine Information Technology Nano Robots Energy Nanotechnology Applications 8 Stinger: Targeted Drug Delivery Nano Transistor OLED Nanorobot Aerogel NANO FILTERS Chouksey Engineering CollegeSlide 9: Carbon NanoTubes The joining of two carbon nanotubes Carbon Nanotubes:: I n 1991, tiny, super-strong rolls of carbon atoms known as carbon nanotubes were created. These are six times lighter, yet 100 times stronger than steael . This rotating picture is actually a model of carbon nanotube, the strongest and stiffest materials discovered till to date. CNTs also known as buckytubes are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1 9 Chouksey Engineering CollegeSlide 10: Single Walled Nanotubes (SWNT) 10 Single-walled nanotubes have a diameter of close to 1 nanometer, with a tube length that can be many millions of times longer. The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder. The way the graphene sheet is wrapped is represented by a pair of indices ( n , m ) called the chiral vector Single-walled nanotubes are an important variety of carbon nanotube because they exhibit electric properties Chouksey Engineering CollegeSlide 11: There are two models of description of these MWNT:: In the Russian Doll model, sheets of graphite are arranged in concentric cylinders In the Parchment model, a single sheet of graphite is rolled in around itself, resembling a scroll of parchment or a rolled newspaper Multi Walled Nano Tubes (MWNT) Multi-walled nanotubes (MWNT) consist of multiple rolled layers (concentric tubes) of graphite 11 Chouksey Engineering CollegeSlide 12: Nanoelectronics combine biology, chemistry, physics, engineering, and computer science, i.a. computer chips (nanochips), nanomotors, nanoelectronics to body’s nervous system Nanotechnology to the rescue of overheating computer chips For Electronics Nokia Morph Cell Phone With NanotechnologySlide 13: For Energy Capture and Storage Sunlight storage, i.e. titanium dioxide. This material is able to absorb solar energy when combined with a special dye. Then the energy may be converted to electrical energy. Fig. 3- New technologies for clean energy generation and storage, such as using hydrogen to supply fuel cellsSlide 14: NEED FOR NANOTECHNOLOGY Allows the placement of small structures placed with precision,simplicity and low cost Leads to economic growth Enhances national security Improves the quality of life Leads to job creation 14 Chouksey Engineering CollegeSlide 15: IMPS College Of Engineering & Technolgy . Nanoscale Approaches and Fabrication Top -down Approaches Bottom -up Approaches Create smaller objects using Larger objects They arrange smaller components in to more complex. Uses principles of molecular recognition Layer -by-layer s elf assembly 15 Chouksey Engineering CollegeSlide 16: With NT, we can create unique materials and products which are: Stronger Lighter Cheaper Durable Precise Computers can become a billion times faster and a million times smaller Automatic Pollution Cleanup Manufacturing at almost no cost End of Illnesses (i.e. cancer, heart disease) Universal Immunity (i.e. aids, flu) Body Sculpting (i.e. change your appearance) Industrial Medical Material Advantages 16 Chouksey Engineering CollegeSlide 17: Health and safety issues Since the effects are unpredictable, Nano -particles may cause serious illness or damage to human body. Untraceable destructive weapons of mass destruction. Social & Political issues Creates social strife through increasing wealth gap Advisability of increasing scope of the technology creates political dilemma 17 Disadvantages of Nanotechnology Chouksey Engineering CollegeSlide 18: Miniature Weapons and Explosives Misuse of Millitary Supplies. Uncontrolled Nanomachines (Grey Goo Senario ) Self Replicating Nanomachines ( Nanobots ) Illegal Monitoring Illegal Tracking Potential DangerSlide 19: Exposure of human and the environment to nanomaterials at different stages of product life cycle “ Grey-goo ” It is a hypothetical situation where self replicating nanobots go out of control, and consume all matter on earth. Environmental issues Nanopollution is created by toxic wastes from nanomaterial manufacturing Enhances Global warming in the long run “ The Living Fog ” formed by billions of replicating nanobots gone mad 19 Chouksey Engineering College G r e y G o oSlide 20: Chouksey Engineering College Today’s technology is finally realizing the ideas of von Neumann in the 1940s and Feynman in the late 1950s. In the next 50 years, machines will get increasingly smaller.. With this technology, space travels, computers, weapons, energy products, medicines will be revolutionised . If the researchers in this field put together an ethical set of guidelines and follow them then we should be able to develop nanotechnology safely. ConclusionSlide 21: 21 Chouksey Engineering College Thank You Presented by:- PRATEEK BHAWAL 3 rd Sem. ET&T. c.e.c . bILASPUR Swati sharma 3 RD SEM. EEE . c.E.C . BILASPUR