Premium
Powder Conductivity Assessment Using a Disposable 3D Printed Device
Author(s) -
Fraser Alison,
Zhang Zishuai,
Merle Geraldine,
Gostick Jeff,
Barralet Jake
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800145
Subject(s) - van der pauw method , materials science , conductivity , electrical conductor , composite material , carbon black , electrical resistivity and conductivity , 3d printed , electrode , carbon nanotube , biomedical engineering , electrical engineering , hall effect , chemistry , medicine , natural rubber , engineering
Abstract This work describes a low‐cost 3D printed apparatus developed for powder electrical conductivity measurement with electrodes fitted in either a two‐probe or four probe van der Pauw configurations. Electrical conductivity was then measured as a function of density by compressing the powders in an Instron mechanical test machine. Highly conductive carbon black, lower conductive Fe 3 O 4 and titania carbon nanotube composites were further tested under both methodologies to assess their reliability. Small powder masses are required for each measurement and our data matched well with literature values. It appeared that 3D printed polymer dies could be used to measure powder conductivity, though loss of material on the die walls was a source of error especially for small powder volumes.