PMID- 32290262
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2072-666X (Print)
IS  - 2072-666X (Electronic)
IS  - 2072-666X (Linking)
VI  - 11
IP  - 4
DP  - 2020 Apr 10
TI  - Micro-Pattern of Graphene Oxide Films Using Metal Bonding.
LID - 10.3390/mi11040399 [doi]
LID - 399
AB  - Recently, graphene has been explored in several research areas according to its 
      outstanding combination of mechanical and electrical features. The ability to 
      fabricate micro-patterns of graphene facilitates its integration in emerging 
      technologies such as flexible electronics. This work reports a novel 
      micro-pattern approach of graphene oxide (GO) film on a polymer substrate using 
      metal bonding. It is shown that adding ethanol to the GO aqueous dispersion 
      enhances substantially the uniformity of GO thin film deposition, which is a 
      great asset for mass production. On the other hand, the presence of ethanol in 
      the GO solution hinders the fabrication of patterned GO films using the standard 
      lift-off process. To overcome this, the fabrication process provided in this work 
      takes advantage of the chemical adhesion between the GO or reduced GO (rGO) and 
      metal films. It is proved that the adhesion between the metal layer and GO or rGO 
      is stronger than the adhesion between the latter and the polymer substrate (i.e., 
      cyclic olefin copolymer used in this work). This causes the removal of the GO 
      layer underneath the metal film during the lift-off process, leaving behind the 
      desired GO or rGO micro-patterns. The feasibility and suitability of the proposed 
      pattern technique is confirmed by fabricating the patterned electrodes inside a 
      microfluidic device to manipulate living cells using dielectrophoresis. This work 
      adds great value to micro-pattern GO and rGO thin films and has immense potential 
      to achieve high yield production in emerging applications.
FAU - Abunahla, Heba
AU  - Abunahla H
AD  - System-on-Chip Center, Electrical and Computer Engineering Department, Khalifa 
      University of Science and Technology, Abu Dhabi 127788, UAE.
FAU - Alamoodi, Nahla
AU  - Alamoodi N
AD  - Research and Innovation Center on CO2 and H2 (RICH), Center of Catalysis and 
      Separation (CeCaS), Chemical Engineering Department, Khalifa University of 
      Science and Technology, Abu Dhabi 127788, UAE.
FAU - Alazzam, Anas
AU  - Alazzam A
AD  - System-on-Chip Center, Mechanical Engineering Department, Khalifa University of 
      Science and Technology, Abu Dhabi 127788, UAE.
FAU - Mohammad, Baker
AU  - Mohammad B
AD  - System-on-Chip Center, Electrical and Computer Engineering Department, Khalifa 
      University of Science and Technology, Abu Dhabi 127788, UAE.
LA  - eng
GR  - RC2-2018-020/Khalifa University of Science and Technology/
PT  - Journal Article
DEP - 20200410
PL  - Switzerland
TA  - Micromachines (Basel)
JT  - Micromachines
JID - 101640903
PMC - PMC7231371
OTO - NOTNLM
OT  - adhesion
OT  - copper
OT  - dielectrophoresis
OT  - graphene oxide
OT  - lithography
OT  - metal
OT  - pattern
OT  - reduced graphene oxide
COIS- The authors declare no conflict of interest.
EDAT- 2020/04/16 06:00
MHDA- 2020/04/16 06:01
PMCR- 2020/04/10
CRDT- 2020/04/16 06:00
PHST- 2020/03/17 00:00 [received]
PHST- 2020/04/04 00:00 [revised]
PHST- 2020/04/08 00:00 [accepted]
PHST- 2020/04/16 06:00 [entrez]
PHST- 2020/04/16 06:00 [pubmed]
PHST- 2020/04/16 06:01 [medline]
PHST- 2020/04/10 00:00 [pmc-release]
AID - mi11040399 [pii]
AID - micromachines-11-00399 [pii]
AID - 10.3390/mi11040399 [doi]
PST - epublish
SO  - Micromachines (Basel). 2020 Apr 10;11(4):399. doi: 10.3390/mi11040399.