Updated September 2011 Nanotechnology in Electronics
Updated September 2011 Nanotechnology in Electronics.
Jan 04, 2016
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Updated September 2011
Nanotechnologyin
Electronics
Updated September 2011
NanotechnologyThings Are Heating UP!
Updated September 2011
Carbon nanotubes—a girl’s best friend?
The diamond has long been
considered the hardest mineral
on earth until now!
DiamondEnlargedNanotubes
Photo by NRELcc by Gregory Phillips
Updated September 2011
What on earth are carbon nanotubes?
Carbon nanotubes (CNTs) are carbon structures with special properties that make them useful in a wide range of scientific and everyday applications.
cc by Michael Ströck
Updated September 2011
There are four distinct forms of carbon:
Fullerene
GraphiteDiamond
Nanotube
cc by Gregory Phillips
cc by Sauperad
cc by Guillaume Paumier
cc by Eurico Zimbres
Updated September 2011
Each form of carbon has its own unique properties determined by the arrangement of atoms within it.CNTs exist in three different forms. Even though the differences are very small, they cause each one to have its own unique properties.
Zigzag Armchair Chiral Images cc by Michael Ströck
Updated September 2011
Carbon nanotubes are different from other natural materials. The CNT’s incredibly small size and distinct properties allow it to do things other materials cannot do. These special properties include increased electrical conductivity, thermal conductivity and tensile strength.
Electrical and thermal conductivity
Tensile strength
Image by NASA
Image cc by CDang
Updated September 2011
CNTs conduct electricity extremely well. However, other materials such as copper nanowires have tens of thousands of electrons traveling through the center of the wire together. Imagine what would happen if a large group of people tried to go through a narrow doorway at the same time.
Updated September 2011
In the same way, electrons rush together and bump into stationary atoms. Because of this, the electrons move forward, sideways and even backward. This is called scattering. This process generates a lot of heat and wastes energy.
In carbon nanotubes there is not as much scattering because the carbon tubes are hollow. This prevents electron “clumping,” so CNTs do not lose as much heat and do not waste as much energy.
Updated September 2011
CNTs are extremely strong. A one-inch thick rope made of CNTs is 100 times stronger and 1/6 the weight of steel. Can you imagine a building built with ropes instead of steel or an elephant on a platform supported by CNT ropes?
cc by Follix
Updated September 2011
The special properties of these tiny structures make CNTs useful for several current and future applications in the electronics field.
Photo by Mike 1024
Updated September 2011
Flat panel display screens: CNTs are being used to make thinner, lighter display screens. An electrified nanotube will shoot electrons from its end like a small cannon. When these are allowed to bombard a phosphor screen, an image is created.
cc by Chuck Jordan
Updated September 2011
Transistors are devices that can act like an on/off switch or an amplifier for currents and are in nearly every piece of electronic equipment used today. The properties of CNTs can produce molecular electronic devices, transistors being the most significant.
cc by Rolf Süssbrich
Updated September 2011
This module is one of a series designed to introduce faculty and high school students to the basic concepts of nanotechnology. Each module includes a PowerPoint presentation, discussion questions, and hands-on activities, when applicable. The series was funded in part by: The National Science FoundationGrant DUE-0702976and the Oklahoma Nanotechnology Education Initiative Any opinions, findings and conclusions or recommendations expressed in the material are those of the author and do not necessarily reflect the views of the National Science Foundation or the Oklahoma Nanotechnology Education Initiative.
Updated September 2011
Image Credits Phillips, Gregory (Photographer), CZ_Brilliant.jpg [Digital Image], Canada, Wikimedia Commons (commons.wikimedia.org)
National Renewable Energy Laboratory (Photographer), Carbon Nanotubes.jpg [Digital Image], United States, Wikimedia Commons (commons.wikimedia.org)
Ströck, Michael (Designer) Types of Carbon Nanotubes.jpg [Digital Image], Austria, Wikimedia Commons (commons.wikimedia.org)
Saperaud (Designer) Fullerene-C60.png [Digital Image], Germany, Wikimedia Commons (commons.wikimedia.org)
Paumier, Guillaume (Designer) Carbon Nanotube.svg [Digital Image], France, Wikimedia Commons (commons.wikimedia.org)
Zimbres, Eurico (Photographer), GrafitaEZ.jpg [Digital Image], Brazil, Wikimedia Commons (commons.wikimedia.org)
Cdang. (Photographer). Gunt WP300 tensile testing machine, for educational purpose. [Digital Image]. France. Wikimedia Commons (commons.wikimedia.org)
Updated September 2011
Image Credits Mike1024. (Photographer). 28 pin MLP integrated circuit [Digital Image]. Wikimedia Commons (commons.wikimedia.org)
Jordan, Chuck (Photographer). Apple TV and Sony flatscreen TV on display at Macworld San Francisco 2007. [Photograph]. Wikimedia Commons (commons.wikimedia.org)
Süssbrich, Rolf (Photographer). Small Transistor Metal 1.jpg. [Digital Image]. Wikimedia Commons (commons.wikimedia.org)
Updated September 2011
References Weichman, Joe. Science Happens (2009). [Kindle Edition]. Retrieved from http://www.amazon.com
Williams, Linda and Dr. Wade Adams. (2007). Nanotechnology Demystified. [Kindle Version] doi: 10.1036/0071460233
Wilson, Michael, Kanangara, Kamali, Smith, Geoff, Simmons, Michelle, & Raguse, Burkhard. Nanotechnology: Basic Science and Emerging Technologies. (2004). [Kindle Edition] Retrieved from http://www.amazon.com
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