Today. Transmission Microscopy. A Bit of Microscopy History. Microscopy & Manipulation lecture Introduction to Nanotechnology

15-398 lecture 5 Today 15-398 Introduction to Nanotechnology Examining the nanoscale Microscopy & Manipulation SEM TEM STM AFM Manipulating ato...
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15-398

lecture 5

Today

15-398 Introduction to Nanotechnology

Examining the nanoscale

Microscopy & Manipulation

SEM TEM STM AFM

Manipulating atoms

Seth Copen Goldstein [email protected]

STM AFM

CMU lecture 5 15-398

© 2004 Seth Copen Goldstein

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A Bit of Microscopy History Optical Microscope ~1700

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Transmission Microscopy Light:

SEM: 1942

Electrons: TEM 1931

© 2004 Seth Copen Goldstein

Max resolution 275nm

1981: STM 1986: AFM

Electrons Max resolution different views

Made from Si or Si3N4

freeze fractured styrene-isobutylene-styrene a-b-a block copolymer film, from: http://www.psrc.usm.edu/mauritz/afm.html lecture 5 15-398

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© 2004 Seth Copen Goldstein

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Interpretting images

Carbon nanotubes lecture 5 15-398

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More artifacts

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© 2004 Seth Copen Goldstein

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Subatomic resolution

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AFM Images

Dip-Pen Lithography Can Read and Write!

NaCl on Mica (5.6nmx4.8nm) Hard Disk

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Inks Soft Materials

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Speeding up the process

Hard Materials

Small functional molecules SAMs Conducting polymers Biopolymers / macromolecules

Metal inks Sol precursor inorganic inks Nanoparticle catalysts

From Nanoinc presentation lecture 5 15-398

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© 2004 Seth Copen Goldstein

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Today Looking at (and modifying) the nanoscale SEM/TEM STM/AFM For Thursday: read chapter 3.

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© 2004 Seth Copen Goldstein

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