TY - JOUR
T1 - Surface patterning of multilayer graphene by ultraviolet laser irradiation in biomolecule sensing devices
AU - Chang, Tien-Li
AU - Chen, Zhao Chi
N1 - Funding Information:
The authors gratefully acknowledge the support of the Ministry of Science and Technology of Taiwan, Republic of China under the grants MOST 103-2221-E-003-001 and MOST104-2221-E-003.
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/12/30
Y1 - 2015/12/30
N2 - The study presents a direct process for surface patterning of multilayer graphene on the glass substrate as a biosensing device. In contrast to lithography with etching, the proposed process provides simultaneous surface patterning of multilayer graphene through nanosecond laser irradiation. In this study, the multilayer graphene was prepared by a screen printing process. Additionally, the wavelength of the laser beam was 355 nm. To perform the effective laser process with the small heat affected zone, the surface patterns on the sensing devices could be directly fabricated using the laser with optimal control of the pulse overlap at a fluence threshold of 0.63 J/cm 2 . The unique patterning of the laser-ablated surface exhibits their electrical and hydrophilic characteristics. The hydrophilic surface of graphene-based sensing devices was achieved in the process with the pulse overlap of 90%. Furthermore, the sensing devices for controlling the electrical response of glucose by using glucose oxidase can be used in sensors in commercial medical applications.
AB - The study presents a direct process for surface patterning of multilayer graphene on the glass substrate as a biosensing device. In contrast to lithography with etching, the proposed process provides simultaneous surface patterning of multilayer graphene through nanosecond laser irradiation. In this study, the multilayer graphene was prepared by a screen printing process. Additionally, the wavelength of the laser beam was 355 nm. To perform the effective laser process with the small heat affected zone, the surface patterns on the sensing devices could be directly fabricated using the laser with optimal control of the pulse overlap at a fluence threshold of 0.63 J/cm 2 . The unique patterning of the laser-ablated surface exhibits their electrical and hydrophilic characteristics. The hydrophilic surface of graphene-based sensing devices was achieved in the process with the pulse overlap of 90%. Furthermore, the sensing devices for controlling the electrical response of glucose by using glucose oxidase can be used in sensors in commercial medical applications.
KW - Laser irradiation
KW - Multilayer graphene
KW - Sensing devices
KW - Surface patterning
UR - http://www.scopus.com/inward/record.url?scp=84961814702&partnerID=8YFLogxK
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U2 - 10.1016/j.apsusc.2015.10.128
DO - 10.1016/j.apsusc.2015.10.128
M3 - Article
AN - SCOPUS:84961814702
VL - 359
SP - 543
EP - 549
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -