TY - JOUR
T1 - Transparent, patterned graphene oxide films with tunable electrical conductivity using thermal, chemical, and photoreduction techniques for lab-on-a-chip applications
AU - Alazzam, Anas
AU - Alamoodi, Nahla
AU - Mathew, Bobby
AU - Abutayeh, Mohammad
AU - Khashan, Saud Abdelaziz
N1 - Funding Information:
This publication is based upon work supported by the Khalifa University of Science and Technology under Award No. [CIRA-2019–014].
Publisher Copyright:
© 2023, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2023/3
Y1 - 2023/3
N2 - This work demonstrates the fabrication of electrically tunable films of graphene oxide (GO). GO thin films were deposited and micropatterned on a cyclic olefin copolymer (COC) substrate using a plasma-enhanced liftoff technique. This article discusses thermal, chemical, and photoreduction methods for controlling the electrical conductivity of the patterned film. The patterned graphene oxide films were used to manipulate cells after embedding them in a microfluidic channel. Cells were manipulated under dielectrophoresis (DEP) using patterned reduced graphene oxide (rGO) films with varying electrical conductivities. The non-uniform electric field required for DEP was created either by arranging and shaping a set of electrodes (eDEP) or by simply implementing low conductivity rGO as an insulator between two metal electrodes (iDEP). Graphical Abstract: [Figure not available: see fulltext.].
AB - This work demonstrates the fabrication of electrically tunable films of graphene oxide (GO). GO thin films were deposited and micropatterned on a cyclic olefin copolymer (COC) substrate using a plasma-enhanced liftoff technique. This article discusses thermal, chemical, and photoreduction methods for controlling the electrical conductivity of the patterned film. The patterned graphene oxide films were used to manipulate cells after embedding them in a microfluidic channel. Cells were manipulated under dielectrophoresis (DEP) using patterned reduced graphene oxide (rGO) films with varying electrical conductivities. The non-uniform electric field required for DEP was created either by arranging and shaping a set of electrodes (eDEP) or by simply implementing low conductivity rGO as an insulator between two metal electrodes (iDEP). Graphical Abstract: [Figure not available: see fulltext.].
KW - Dielectrophoresis
KW - Electrically tunable films
KW - GO
KW - Patterned graphene oxide
KW - Reduced graphene oxide
KW - Reduction of GO
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U2 - 10.1007/s00216-023-04524-x
DO - 10.1007/s00216-023-04524-x
M3 - Article
C2 - 36633621
AN - SCOPUS:85146187726
SN - 1618-2642
VL - 415
SP - 1339
EP - 1346
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
IS - 7
ER -