Observation of Cross Section of the Electrode Section
(Enter Keys of Cell Phones)



  • The grinding method and the chemical etching method were used to prepare a sample for the observation of a cross section of the electrode section lying behind the enter keys of a cell phone. The sample was observed with the SEM.
  • The structure of the crystal grains of Ni film and Cu film that had not been disclosed by grinding alone was revealed as a result of carrying out chemical etching additionally.

Search Number 4010

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