Nanotechnology
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Nanotechnology. 14,100. 7,220,000. “It would take an elephant, balanced on a pencil, to break through a sheet of graphene the thickness of Saran Wrap.” http://nanularity.com/default.aspx. y. a 1. a 2. x. SWNT. carbon allotropes.

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Nanotechnology

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Nanotechnology

Nanotechnology


Nanotechnology

14,100


Nanotechnology

7,220,000


Nanotechnology

“It would take an elephant, balanced on a pencil, to break through a sheet of graphene the thickness of Saran Wrap.”

http://nanularity.com/default.aspx

y

a1

a2

x

SWNT

carbon allotropes

NSF-funded researchers Richard Smalley, Robert Curl (both of Rice University) and Harry Kroto (University of Sussex, UK; non-NSF funded) shared the 1996 Nobel Prize in Chemistry for the discovery of "buckminsterfullerene." James Heath, then a graduate student at Rice and now a faculty member at UCLA, also played a key role.

nanotube


Single walled carbon nanotubes

Single-Walled Carbon Nanotubes

Real timeNanotube length = 10 mm


Size matters

Bulk Gold = Yellow

Nanogold = Red

Size Matters


Types of nanomaterials

Types of Nanomaterials

Gold nanoshell


Nanotechnology

Why is it so exciting?

  • Human Health

    • Gold nanoshells for cancer therapy

  • Environmental Health

    • Nanorust to clean drinking water

Live (green)/Dead (red) assays shows where immunotarged gold nanoshells and a near infrared laser destroyed prostate cancer cells


Nanotechnology

  • http://science.discovery.com/videos/brink-package-nano-water.html


Optical vs electron microscopy

Optical vs. Electron Microscopy

Radiolarian (amoeboid protozoa)

Optical microscopy image

Electron microscopy image

Why do electron beams give superior resolution to light rays?

Shorter wavelength!


Timeline of microscopy

Timeline of Microscopy

c. 1625

1938

SEM 1981

AFM 1986

http://www.nobel.se/physics/educational/microscopes/powerline/index.html


Stm manipulating atoms

STM: Manipulating Atoms

Iron atoms on Copper surface

http://www.almaden.ibm.com/vis/stm/library.html#ref2l


Scanning tunneling microscopy

Scanning Tunneling Microscopy

Nobel Laureates (1986) Heinrich Rohrer and Gerd Binnig

http://www.nobel.se/physics/educational/microscopes/scanning/index.html


Nanotechnology

http://www.almaden.ibm.com/vis/stm/library.html#ref2l


Nanotechnology

http://www.almaden.ibm.com/vis/stm/library.html#ref2l


Nanotechnology

http://www.almaden.ibm.com/vis/stm/library.html#ref2l


Nanotechnology

AFM

http://www.nanotech-now.com/images/Art_Gallery/AS-AFM.jpg


What is nanotechnology

What is Nanotechnology?

Nanotechnology is the creation of functional materials, devices, and systems through control of matter on the nanometer length scale, exploiting novel phenomena and properties (physical, chemical, biological) present only at that length scale.

“If I were asked for an area of science and engineering that will most likely produce the breakthroughs of tomorrow, I would point to nanoscale science and engineering.”

Neal Lane

University Professor, Rice University

Former NSF Director

Assistant to President Clinton for Science and Technology


Nanotechnology

http://www.kqed.org/quest/television/view/189?gclid=CJnCjsCuxJ0CFSENDQodDmMxrQ


Scanning electron microscopy

Scanning Electron Microscopy

http://mse.iastate.edu/microscopy/whatsem.html

http://mse.iastate.edu/microscopy/path2.html

http://www.mos.org/sln/sem/seminfo.html


Transmission electron microscopy magnifies up to 50 million times hrtem

Transmission Electron Microscopy(magnifies up to 50 million times [HRTEM])

300 nm

http://www.nobel.se/physics/educational/microscopes/tem/index.html

CdSe quantum dot, Colvin

Trina Mandel and the TEM

Hollow colloidal ellipses, Colvin


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