Nanotechnology Principles, Applications, Careers, and Education. Copyright 2011 The Pennsylvania State University
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1 Nanotechnology Principles, Applications, Careers, and Education Copyright 2011 The Pennsylvania State University
2 Outline What are the principles of nanotechnology? What are some applications? What kind of career can I have? What are the pathways for education?
3 Outline What are the principles of nanotechnology? What are some applications? What kind of career can I have? What are the pathways for education?
4 What is Nano? Nano is a factor of 10 prefix 1 billionth 1/1,000,000,000 or or 1x10-9 Frequently used as a measurement of length in meters (m) 1 nm is one billionth of 1 m Prefix Symbol Amount Factor giga G 1 billion 10 9 = 1,000,000,000 mega M 1 million 10 6 = 1,000,000 kilo k 1 thousand 10 3 = 1,000 centi c 1 hundredth 10-2 = 0.01 milli m 1 thousandth 10-3 = micro μ 1 millionth 10-6 = nano n 1 billionth 10-9 = So just how small is one billionth of a meter?
5 Try This on for Size. DNA Double Helix Width ~2.5 nm Red Blood Cell Diameter ~7 μm = 7000 nm *Images from Hair Strand Diameter ~0.1 mm = 100,000 nm Common House Fly Length ~1 cm = 10,000,000 nm
6 What is Nanotechnology? Nanotechnology is manipulating matter at the atomic and molecular scale. Nanotechnology is seeing matter at the atomic and molecular scale. Nanotechnology is exploitation of the unique capabilities/properties of structures fabricated at the atomic and molecular scale.
7 The History of Nanotechnology Before nanotechnology, microfabrication was known as the term used to describe how microchips and other components were made. As resolution capabilities improved into the sub micron range along came the term Nanofabrication. Both are still used today and similar equipment is used to deposit or grow thin layers of material that can be patterned and layered on substrates. We ll look at some of these fabrication steps later in the presentation.
8 Common Examples of MEMS devices Airbag sensors Digital projectors Helmet sensors Pressure sensors Wii controllers DLP screens Ink jet printer heads Gene chips
9 In the News Dartmouth researches have invented a robot that is so small that an army of 200 could march across an M&M in a single line. The robot is 60 microns wide, 250 microns long It contains two micro actuators movie
10 How small is a Nanometer? Nano is a prefix meaning 1x10-9 or 1 billionth The nanoscale is between nanometers. There are? Centimeters in a meter? There are? Millimeters in a meter? There are?micrometers in a meter? There are? Nanometers in a meter?
11 How do we see a Nanometer? Atomic Force Microscopes are one example and are used to get physical surface information by using a sharp probe tip to scan over the surface. The tip can also be used to move atoms on a surface
12 How can we see a Nanometer? The link below takes you to an animation that discusses some different tools for looking at samples.
13 Nanofabrication Some of the fabrication steps include: Deposition Etch Patterning Surface Modification Characterization Let s take a look at some of these processes in the next slide
14 An Example of a Top-Down Nanofabrication Processing Sequence THIN SURFACE FILM LITHOGRAPHY GROWTH ETCHING MODIFICATION OR DEPOSITION Film Grown Remove Pattern Dissolve by Chemical Transfer the Exposed Photoresist Bonds and Reaction Spin Photoresist Align Expose Thermal Ion are Substrate (Etch/Ion Implantation Altered Photomask of Photoresist with Ambient Anneal Modification in in Light Implantation) Liquid Exposed species Developer Areas Complete with Barrier the Substrate WET ETCH UV transparent glass with UV opaque chrome mask (Light Stencil) Photoresist Thin Film + Substrate +
15 Nanofabrication We can also use chemical reactions to cause atoms to come together to form different nanomaterials that are structures, clusters, or coatings
16 Nanomaterials A nanomaterial can be defined as a particle having one or more dimensions less than 100 nm, that cause their properties to be different from that of the bulk material Sphere Rod Sheet
17 Nanomaterials C60, carbon nano-onions, particles, single and multi walled nanotubes ~1 nm ~3 nm nm nm
18 Material Properties at the Nanoscale Material Properties change The materials that we thought we knew all about act much differently at the nanoscale. An Example: Carbon We know carbon can form coal and diamonds, a fuel source and a precious gemstone and the graphite in pencils is made of graphene, allowing us to write. Buckminsterfullerene 60 carbon atoms forming a hollow cage
19 Material Properties at the Nanoscale Macroscale Gold: Material properties don t change with size. - reactivity - melting point - optical absorption - etc. Nanoscale Gold: Material properties change with the size of the gold nanoparticle. - reactivity - melting point - optical absorption - etc.
20 Material Properties at the Nanoscale We only really discussed two elements...but there are plenty more that have new properties at the nanoscale Image from
21 Outline What are the principles of nanotechnology? What are some applications? What kind of career can I have? What are the pathways for education?
22 Some Applications The Project on Emerging Nanotechnologies is a funded organization that keeps track of the impact nanotechnology has in the marketplace. There is an inventory of products that you can easily browse by name, category, company, or country Over 500 products are currently listed
23 Nano, Nano, Nano store.apple.co m bd.com hexbug.com/nano yonex.com
24 The Consumer Products Activity We put together an activity to introduce you to some of the products that are currently available that have been influenced by nanotechnology. Check it out!
25 Why Use Nanotechnology How do we get more and more transistors onto the chip? Keep shrinking the size! As they shrink they get faster. The electrons don t have to travel as far to get from one side of the device to the other.
26 Why Use Nanotechnology Exfoliated nano clay used as a filler in plastic composites act as an air barrier in sporting goods and food packaging The larger the aspect ratio of the clay plate the more effective the barrier
27 Why Use Nanotechnology? Gold nanoshell near-infrared thermal therapy The particles have a tunable plasmon resonance based on the thickness of the thin film of gold.
28 Why Use Nanotechnology? Cancer cells Healthy cells Nanoshells Near-infrared light Nanoshells Cancer cells Healthy cells Dead cancer cells Credit: Nanoshells as Cancer Therapy National Cancer Institute Intact healthy cells
29 Why Use Nanotechnology? When ionic mercury solution is introduced to the nanowire sensor at 100mV we see a decrease in the measured current Au nanowires show improvements over thin film sensor applications increasing the response of the sensor by 4 times
30 Why Use Nanotechnology? Self cleaning windows Longer lasting siding Stain resistant textiles Antibacterial appliances Efficient lighting Improved insulation Solar cell roofing Sensors in walls
31 Outline What are the principles of nanotechnology? What are some applications? What kind of career can I have? What are the pathways for education?
32 What fields are impacted? Electronics Optics/Photonics Energy Chemistry Materials Environmental Impact Manufacturing Engineering Medical Advancements Biomimetics Sensors Metrology Forensics Water Purification
33 Where do you work? Some jobs in nanotechnology require you to work in a cleanroom, while others may not.
34 What is a Cleanroom? A cleanroom is where scientists and engineers build structures at the nano scale. We wear suits to protect the cleanroom from the dirt we may carry in on our clothes, our bodies, and our shoes.
35 What is a Cleanroom?
36
37 Estimated Starting Salaries Salaries can vary based on the state, the type of industry, and ones experience. These figures are based on statistics gathered from graduates of the PA NMT program. Associate s Degree $30,000-$50,000 Bachelor s Degree $35,000-$60,000 Master s Degree $40,000-$80,000 Doctoral Degree $75,000-$100,000
38 Outline What are the principles of nanotechnology? What are some applications? What kind of career can I have? What are the pathways for education?
39 Educational Pathways Science and technology majors will benefit from have an understanding of nanotechnology There are programs that incorporate nanotechnology training into: Associate Degrees Bachelors Degrees Masters Degrees Doctoral Degrees
40 Educational Opportunities A key challenge for nanotechnology development is the education and training of a new generation of skilled workers in the multidisciplinary perspectives necessary for rapid progress of the new technology Source: Mihail C Roco, Senior Advisor for Nanotechnology at the National Science Foundation
41 Nanotech Job Projections It is estimated that about 2 million nanotechnology workers will be needed worldwide by an approximate distribution of nanotechnology workers needed in various areas by 2015 would be: million in the US, million in Japan, million in Europe, about 0.2 million in the Asia-Pacific region excluding Japan and 0.1 million in other regions. nanotechnology has the potential to create 5 million additional related jobs overall by 2015 in the global market. Source: Mihail C Roco, Senior Advisor for Nanotechnology at the National Science Foundation
42 What Should I do Now to Prepare for a Nanotechnology Career Develop your Technical Foundation Science and / or Tech Courses Depends on your Goal Do Personal Web Research on Nanotechnology and it s Applications
43 Summary Training in nanotechnology will supplement your traditional course of study and give you competitive skills for the job market. An understanding of nanotechnology will help you to make informed decisions as a consumer and as a voting citizen. Will you be ready?
44
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