NANO: SCALING LAWS Dr. MC Ozturk, 304 2.1.

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Presentation transcript:

NANO: SCALING LAWS Dr. MC Ozturk,

Why is “the smaller, the better?”

Scaling & Integrated Circuits First Integrated Circuit Texas Instruments 1958

Moore’s Law In 1965, Gordon Moore of Intel predicted that the number of transistors per chip would double every two years.

Scaling & Speed MIPS: Million instructions per second

Scaling & Material consumption  Silicon consumed per transistor  Other materials – metals, insulators etc.  Chemicals & Gaseous precursors  Water

Scaling & Functional density We can talk on the phone!

Scaling & Functional density In 1973, Martin Cooper, the Division Manager of the Motorola Cellular Program, made the first call from a cell-phone on a busy street corner in New York, on the 6th Avenue by the New York Hilton. He called his competitor, Joe Engels at Bell Systems.

Scaling & Functional density Functional density improves exponentially with scaling

Scaling & Vibrations  The resonant frequency of a system is inversely proportional to its mass

Scaling Laws

 Characteristic Dimension “ D ”  Most appropriate measurement unit

Surface to Volume Ratio

A Few Examples…

Scaling in Mechanics Naim Suleymanoglu (4’11”) 3 Olympic championships 7 World championships 3 European championships

Scaling in Mechanics At small dimensions, the contact area plays a much bigger role than the volume due to Van der Walls forces between atoms of the surface and the object. Scaling laws do not always work well at atomic level! At small dimensions, the contact area plays a much bigger role than the volume due to Van der Walls forces between atoms of the surface and the object. Scaling laws do not always work well at atomic level!

Scaling in Electricity E These simple equations have a significant impact on transistor scaling! We will revisit this in Chapter 6 These simple equations have a significant impact on transistor scaling! We will revisit this in Chapter 6

Application in Biosensing Positively charged virus Negatively charged electrons attracted under the oxide for charge neutrality insulator nanowire Means the wire is highly resistive and attracting a few electrons can make a big difference in its resistance. Means fewer viral particles we place on the surface will make a bigger difference in the wire resistivity Detection of a single influenza virus has been demonstrated.