Making an Integrated Circuit

Claim this podcast

Making an Integrated Circuit

Follow Making an Integrated Circuit

Share on

This podcast is drawn from the "Virtual Lab" of WeCanFigureThisOut.org. This Virtual Lab uses 3D virtual reality animations to explain electronics, microelectronics and nanotechnology. This podcast explains how the transistors of an integrated circuit are made.

John C. Bean - WeCanFigureThisOut.org

Jul 24, 2017 LATEST EPISODE
infrequent NEW EPISODES
35 EPISODES

Search for episodes from Making an Integrated Circuit with a specific topic:

Latest episodes from Making an Integrated Circuit

Let's go inside an Intel 4004 microprocessor to see an individual transistor

Play Episode Listen Later Jul 24, 2017 0:13

To make this transistor, first oxide then nitride layers are grown

Play Episode Listen Later Jul 24, 2017 0:11

A shadow mask then exposes a photographic emulsion

Play Episode Listen Later Jul 24, 2017 0:12

Exposed nitride is then etched away

Play Episode Listen Later Jul 24, 2017 0:07

Oxygen reacts with the Si to grow more oxide

Play Episode Listen Later Jul 24, 2017 0:12

By heating in silane, polycrystal Si is then grown

Play Episode Listen Later Jul 24, 2017 0:04

A stripe is exposed in a second photographic emulsion

Play Episode Listen Later Jul 24, 2017 0:10

Exposed polycrystal Si is etched away leaving the transistor gate

Play Episode Listen Later Jul 24, 2017 0:09

Phosphorus ions then penetrate thin oxide to create the source and drain

Play Episode Listen Later Jul 24, 2017 0:12

Heating in oxygen grows an insulating coat on the gate

Play Episode Listen Later Jul 24, 2017 0:06

A third photographic emulsion defines windows above the source and drain

Play Episode Listen Later Jul 24, 2017 0:10

Openings are then etched in the exposed oxide

Play Episode Listen Later Jul 24, 2017 0:07

Metal is sprayed on to the surface

Play Episode Listen Later Jul 24, 2017 0:03

A fourth photographic emulsion is patterned

Play Episode Listen Later Jul 24, 2017 0:10

Unwanted metal is etched away completing the transistor

Play Episode Listen Later Jul 24, 2017 0:09

And finally, here is the circuit symbol for the transistor

Play Episode Listen Later Jul 24, 2017 0:08

All of the scenes together

Play Episode Listen Later Jul 24, 2017 3:09

Let's go inside an Intel 4004 microprocessor to see an individual transistor

Play Episode Listen Later Jul 24, 2017 0:13

switch individual intel valve ic silicon donor brat semiconductors transistor bell labs 1947 microprocessor microelectronics mosfet bardeen

To make this transistor, first oxide then nitride layers are grown

Play Episode Listen Later Jul 24, 2017 0:11

switch grown layers valve ic silicon donor brat semiconductors transistor bell labs oxide 1947 microelectronics mosfet bardeen

A shadow mask then exposes a photographic emulsion

Play Episode Listen Later Jul 24, 2017 0:12

shadow mask switch valve exposes ic silicon donor brat semiconductors transistor photographic bell labs 1947 emulsion microelectronics mosfet bardeen

Exposed nitride is then etched away

Play Episode Listen Later Jul 24, 2017 0:07

switch exposed valve ic silicon donor brat semiconductors transistor bell labs etched 1947 microelectronics mosfet bardeen

Oxygen reacts with the Si to grow more oxide

Play Episode Listen Later Jul 24, 2017 0:12

switch oxygen valve reacts ic silicon donor brat semiconductors transistor bell labs oxide 1947 microelectronics mosfet bardeen

By heating in silane, polycrystal Si is then grown

Play Episode Listen Later Jul 24, 2017 0:04

switch grown valve ic silicon donor heating brat semiconductors transistor bell labs 1947 microelectronics mosfet bardeen

A stripe is exposed in a second photographic emulsion

Play Episode Listen Later Jul 24, 2017 0:10

switch exposed valve stripe ic silicon donor brat semiconductors transistor photographic bell labs 1947 emulsion microelectronics mosfet bardeen

Exposed polycrystal Si is etched away leaving the transistor gate

Play Episode Listen Later Jul 24, 2017 0:09

leaving switch gate exposed valve ic silicon donor brat semiconductors transistor bell labs etched 1947 microelectronics mosfet bardeen

Phosphorus ions then penetrate thin oxide to create the source and drain

Play Episode Listen Later Jul 24, 2017 0:12

switch thin valve ic silicon drain donor brat semiconductors transistor bell labs phosphorus ions oxide penetrate 1947 microelectronics mosfet bardeen

Heating in oxygen grows an insulating coat on the gate

Play Episode Listen Later Jul 24, 2017 0:06

switch gate grows oxygen valve coat ic silicon donor heating brat semiconductors transistor bell labs insulating 1947 microelectronics mosfet bardeen

A third photographic emulsion defines windows above the source and drain

Play Episode Listen Later Jul 24, 2017 0:10

switch windows valve defines ic silicon drain donor brat semiconductors transistor photographic bell labs 1947 emulsion microelectronics mosfet bardeen

Openings are then etched in the exposed oxide

Play Episode Listen Later Jul 24, 2017 0:07

switch exposed valve ic silicon donor openings brat semiconductors transistor bell labs oxide etched 1947 microelectronics mosfet bardeen

Metal is sprayed on to the surface

Play Episode Listen Later Jul 24, 2017 0:03

switch metal surface valve ic silicon donor brat semiconductors transistor bell labs 1947 microelectronics mosfet bardeen

A fourth photographic emulsion is patterned

Play Episode Listen Later Jul 24, 2017 0:10

switch valve ic silicon donor brat semiconductors transistor photographic bell labs patterned 1947 emulsion microelectronics mosfet bardeen

Unwanted metal is etched away completing the transistor

Play Episode Listen Later Jul 24, 2017 0:09

switch metal valve unwanted completing ic silicon donor brat semiconductors transistor bell labs etched 1947 microelectronics mosfet bardeen

And finally, here is the circuit symbol for the transistor

Play Episode Listen Later Jul 24, 2017 0:08

switch circuit valve symbol ic silicon donor brat semiconductors transistor bell labs 1947 microelectronics mosfet bardeen

This podcast is drawn from the Virtual Lab presentations of WeCanFigureThisOut.org. The copyrighted material of this site was developed under funding from National Science Foundation CCLI, NIRT, MRSEC and NUE programs. This project is led by John C. Be

Play Episode Listen Later Jul 24, 2017 0:33

All of the scenes together

Play Episode Listen Later Jul 24, 2017 3:09

switch scenes valve ic silicon donor brat semiconductors transistor bell labs 1947 microelectronics mosfet bardeen

Claim Making an Integrated Circuit

In order to claim this podcast we'll send an email to with a verification link. Simply click the link and you will be able to edit tags, request a refresh, and other features to take control of your podcast page!