TY - JOUR
T1 - Decoupling elasticity and electrical conductivity of carbon-black gels filled with insulating non-Brownian grains
AU - Larsen, Thomas
AU - Christiansen, Jesper De C.
AU - Royer, John R.
AU - Laidlaw, Fraser H.J.
AU - Poon, Wilson C.K.
AU - Larsen, Tom
AU - Andreasen, Søren J.
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/9/10
Y1 - 2024/9/10
N2 - A unique bistable transition has been identified in granular-colloidal gel composites, resulting from shear-induced phase separation of the gel phase into dense blobs. In energy applications, it is critical to understand how this transition influences electrical performance. Mixing conductive colloids with conductive inclusions, we find that the conductivity and elasticity move in concert, both decreasing in the collapsed phase-separated state. Surprisingly, with insulating inclusions, these properties can become decoupled, with the conductivity instead increasing despite the collapse of the gel structure.
AB - A unique bistable transition has been identified in granular-colloidal gel composites, resulting from shear-induced phase separation of the gel phase into dense blobs. In energy applications, it is critical to understand how this transition influences electrical performance. Mixing conductive colloids with conductive inclusions, we find that the conductivity and elasticity move in concert, both decreasing in the collapsed phase-separated state. Surprisingly, with insulating inclusions, these properties can become decoupled, with the conductivity instead increasing despite the collapse of the gel structure.
UR - http://www.scopus.com/inward/record.url?scp=85203882193&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.22.034023
DO - 10.1103/PhysRevApplied.22.034023
M3 - Article
AN - SCOPUS:85203882193
SN - 2331-7019
VL - 22
SP - 1
EP - 8
JO - Physical Review Applied
JF - Physical Review Applied
IS - 3
M1 - 034023
ER -