« previous next »
Pages: [1]   Go Down

Author Topic: Identify this material!  (Read 2017 times)

0 Members and 1 Guest are viewing this topic.

Offline CodeBreakerTopic starter

  • Newbie
  • Posts: 9
  • Country: hr
Identify this material!
« on: May 17, 2018, 12:39:29 pm »
Hi guys!!

Can anyone identify the material shown in the attached pictures? It is used at the back of a RFID reader coil. I'm assuming to isolate the magnetic field to just 'read' in one direction.
Logged
 

Offline mjs

  • Regular Contributor
  • *
  • Posts: 129
  • Country: fi
Re: Identify this material!
« Reply #1 on: May 17, 2018, 12:46:59 pm »
Google for "flexible ferrite sheet". Basically it stops the magnetic field at one direction. Metal plate would also do that, but the currents in the metal plate would also 'kill' the field in the wanted direction.

NFC tags that work on metal surface also use this stuff.
Logged
 

Offline Gregg

  • Super Contributor
  • ***
  • Posts: 1218
  • Country: us
Re: Identify this material!
« Reply #2 on: May 17, 2018, 07:56:05 pm »
It could be mu metal.
Logged
 

Offline amyk

  • Super Contributor
  • ***
  • Posts: 9173
Re: Identify this material!
« Reply #3 on: May 18, 2018, 04:13:50 am »
Quote from: Gregg on May 17, 2018, 07:56:05 pm
It could be mu metal.
Unlikely, given the texture and the cost of mu metal.
Logged
 

Offline JohnnyMalaria

  • Super Contributor
  • ***
  • Posts: 1154
  • Country: us
    • Enlighten Scientific LLC
Re: Identify this material!
« Reply #4 on: May 18, 2018, 04:31:41 am »
Graphene/polymer (used for EMI shielding)
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 

-->
EEVblog® Main Site EEVblog® on Youtube EEVblog® on Twitter EEVblog® on Facebook EEVblog® on Odysee