February 25, 2019

An Interview with Adam McCombs

1 hour 16 minutes

Welcome, Adam McCombs! Check out his talk at Supercon and the associated article on Hackaday.com

Scanning electron microscope

0h 0m 45s

2017 got the first microscope

0h 1m 10s

Dan Burrard STM microscopes

0h 1m 43s

@Nanographs

0h 2m 28s

Vacuum is shockingly challenging

0h 2m 46s

Air stops behaving like a liquid

0h 3m 57s

Turbomolecular pumps

0h 4m 16s

14.4 atm

0h 5m 24s

turbo pump looks like a turbine

0h 6m 41s

Roughing pump can get 10^-3 torr

0h 8m 2s

Thermionic emission gun

0h 8m 54s

Tungsten filament

0h 9m 3s

Magnetic lenses

0h 9m 52s

Electron detector

0h 11m 0s

Uses 400V to attract electrons towards the phospher

0h 11m 13s

Older systems needed higher energy electrons

0h 12m 13s

You can melt things in an electron microscope

0h 13m 26s

Electron-beam welder

0h 14m 14s

Cutting edge is wet samples

0h 15m 18s

Most things in SEMs are dead

0h 15m 28s

Newest semiconductors is 7-14 nm

0h 17m 33s

Optical vs SEM with Depth of Focus (DOF)

0h 18m 50s

Preparing the sample generally has to be conductive

0h 19m 41s

Non-conductive things are usually coated in gold

0h 20m 26s

Gold coated cheerio

0h 21m 24s

Thickness of the sputter depends on needs: thicker is less coating

0h 22m 38s

Angstroms vs nanometers

0h 23m 37s

SEM vs STM vs TEM

0h 27m 28s

SEM images the surface of things

0h 27m 39s

STM transmits electrons through the sample

0h 27m 49s

imaging bonds requires an atomically thin sample

0h 28m 51s

can image magnetic fields with a TEM

0h 31m 30s

can to tomography if you image things in sequence

0h 31m 55s

Learned about the brain project from Allen Institute

0h 33m 51s

Scanning tunneling electron microscope (stm)

0h 34m 49s

Doesn't operate at vacuum

0h 35m 6s

"Coarse approach done, now to bring it in to quantum tunneling range to start scanning. I always love when we can leverage quantum effects using tools you can just build out of parts from the hardware store, eBay, and digikey."

0h 36m 22s

SEM is for surface science

0h 37m 28s

TEM is used for things like asbestos

0h 38m 5s

Also used for histology (telling if a sample has a virus)

0h 38m 57s

STMs are more specialized - atomic resolution of the surface of a sample

0h 40m 27s

Fundamental material research

0h 40m 47s

IBM video "The boy and his atom"

0h 41m 8s

Multiframes is possible but resolution goes down

0h 41m 46s

Similar to a camera with different exposure

0h 41m 58s

Ben Krasnow videos

0h 44m 6s

First scope was "some assembly required"

0h 45m 13s

Most o-rings are viton - silicon based

0h 46m 8s

ISI super 3A

0h 46m 42s

Jeol 35C

0h 47m 4s

VacuumHackers.com

0h 49m 9s

Digital capture isn't normally included

0h 51m 47s

Polaroid film holder to capature images

0h 52m 53s

Now doing this for a business as well

0h 54m 11s

Repairs, consulting, moving

0h 55m 4s

Might be recreating old parts

0h 55m 27s

Might be manufacturing heavy and creating parts that enables new pieces

0h 55m 36s

The materials of these hasn't changed much over the years

0h 57m 20s

Column is usually made out of iron

0h 59m 40s

Electronics usually aren't the problem

1h 0m 36s

Philips manuals are really detailed

1h 2m 9s

Manuals for older things are non existent

1h 2m 21s

Example of a common failure: beam jumping around

1h 3m 1s

RAM failure on a jeol 1200

1h 4m 48s

Working with high voltage

1h 6m 1s

High voltage tank

1h 7m 53s

Putting the electronics into oil

1h 8m 34s

xray safety is a big concern in TEMs with 120kV+ electrons

1h 9m 39s

Multiple geiger counters (thin window)

1h 10m 11s

Follow along on @nanographs

1h 14m 31s

VacuumHackers.com

1h 14m 57s

nwnlabs.org

1h 16m 20s

(Not mentioned during the show) Adam will be at M&M conference in Portland this year

...more

View all episodes

By The Amp Hour (Chris Gammell and David L Jones)

4.9

226226 ratings

February 25, 2019

An Interview with Adam McCombs

1 hour 16 minutes

Welcome, Adam McCombs! Check out his talk at Supercon and the associated article on Hackaday.com

Scanning electron microscope

0h 0m 45s

2017 got the first microscope

0h 1m 10s

Dan Burrard STM microscopes

0h 1m 43s

@Nanographs

0h 2m 28s

Vacuum is shockingly challenging

0h 2m 46s

Air stops behaving like a liquid

0h 3m 57s

Turbomolecular pumps

0h 4m 16s

14.4 atm

0h 5m 24s

turbo pump looks like a turbine

0h 6m 41s

Roughing pump can get 10^-3 torr

0h 8m 2s

Thermionic emission gun

0h 8m 54s

Tungsten filament

0h 9m 3s

Magnetic lenses

0h 9m 52s

Electron detector

0h 11m 0s

Uses 400V to attract electrons towards the phospher

0h 11m 13s

Older systems needed higher energy electrons

0h 12m 13s

You can melt things in an electron microscope

0h 13m 26s

Electron-beam welder

0h 14m 14s

Cutting edge is wet samples

0h 15m 18s

Most things in SEMs are dead

0h 15m 28s

Newest semiconductors is 7-14 nm

0h 17m 33s

Optical vs SEM with Depth of Focus (DOF)

0h 18m 50s

Preparing the sample generally has to be conductive

0h 19m 41s

Non-conductive things are usually coated in gold

0h 20m 26s

Gold coated cheerio

0h 21m 24s

Thickness of the sputter depends on needs: thicker is less coating

0h 22m 38s

Angstroms vs nanometers

0h 23m 37s

SEM vs STM vs TEM

0h 27m 28s

SEM images the surface of things

0h 27m 39s

STM transmits electrons through the sample

0h 27m 49s

imaging bonds requires an atomically thin sample

0h 28m 51s

can image magnetic fields with a TEM

0h 31m 30s

can to tomography if you image things in sequence

0h 31m 55s

Learned about the brain project from Allen Institute

0h 33m 51s

Scanning tunneling electron microscope (stm)

0h 34m 49s

Doesn't operate at vacuum

0h 35m 6s

0h 36m 22s

SEM is for surface science

0h 37m 28s

TEM is used for things like asbestos

0h 38m 5s

Also used for histology (telling if a sample has a virus)

0h 38m 57s

STMs are more specialized - atomic resolution of the surface of a sample

0h 40m 27s

Fundamental material research

0h 40m 47s

IBM video "The boy and his atom"

0h 41m 8s

Multiframes is possible but resolution goes down

0h 41m 46s

Similar to a camera with different exposure

0h 41m 58s

Ben Krasnow videos

0h 44m 6s

First scope was "some assembly required"

0h 45m 13s

Most o-rings are viton - silicon based

0h 46m 8s

ISI super 3A

0h 46m 42s

Jeol 35C

0h 47m 4s

VacuumHackers.com

0h 49m 9s

Digital capture isn't normally included

0h 51m 47s

Polaroid film holder to capature images

0h 52m 53s

Now doing this for a business as well

0h 54m 11s

Repairs, consulting, moving

0h 55m 4s

Might be recreating old parts

0h 55m 27s

Might be manufacturing heavy and creating parts that enables new pieces

0h 55m 36s

The materials of these hasn't changed much over the years

0h 57m 20s

Column is usually made out of iron

0h 59m 40s

Electronics usually aren't the problem

1h 0m 36s

Philips manuals are really detailed

1h 2m 9s

Manuals for older things are non existent

1h 2m 21s

Example of a common failure: beam jumping around

1h 3m 1s

RAM failure on a jeol 1200

1h 4m 48s

Working with high voltage

1h 6m 1s

High voltage tank

1h 7m 53s

Putting the electronics into oil

1h 8m 34s

xray safety is a big concern in TEMs with 120kV+ electrons

1h 9m 39s

Multiple geiger counters (thin window)

1h 10m 11s

Follow along on @nanographs

1h 14m 31s

VacuumHackers.com

1h 14m 57s

nwnlabs.org

1h 16m 20s

(Not mentioned during the show) Adam will be at M&M conference in Portland this year

...more

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An Interview with Adam McCombs

An Interview with Adam McCombs

More shows like The Amp Hour

The Changelog: Software Development, Open Source

This Week in Tech (Audio)

Security Now (Audio)

Software Engineering Daily

Talk Python To Me

SpyCast

SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

Embedded

Smashing Security

Darknet Diaries

Physics World Weekly Podcast

Practical AI

Hackaday Podcast

Latent Space: The AI Engineer Podcast

Robinson's Podcast