The cover photo describes the graphical representation of a programmable microfluidic device for the capture and detection of a variety of cells and bacteria. Recently, the interest in microfluidic technology has progressed considerably since the last decade due to its advanced applications in many areas including protein biochemistry, cell culture, detection, and electromechanical systems.
Graphene micromesh for transparent conductive films application
Ryousuke Ishikawa*, Hiroki Nishida, Hiro Fukushima, Sho Watanabe, Sohei Yamazaki, Gilgu Oh, Nozomu Tsuboi
Materials Science Program, Niigata University, 8050 Ikarashi 2-nocho, Nishi-ku, Niigata, 950-2181, Japan
Adv. Mater. Lett., 2019, 10 (6), pp 417-420
DOI: 10.5185/amlett.2019.2238
Publication Date (Web): Jan 14, 2019
Copyright © 2019 VBRI Press
E-mail: ishikawa@eng.niigata-u.ac.jp
In order to improve the properties of the graphene transparent conductive film, we developed a process of O2 plasma patterning graphene using a metal mesh as an etching mask. The CVD growth conditions of high-quality multilayer graphene samples consisting of 400 layers or more were found using Ni foil, and the R sheet = 3.4 ± 0.6 Ω/sq. was achieved. The best performance of graphene micromesh based transparent conductive films so far was R sheet = 22.2 Ω/sq. at T = 47.1 ± 1.9 %. According to theoretical calculations based on the combined resistance of the two-dimensional resistance lattice circuit, a combined resistance of 46.8 Ω can be realized at T = 90%.
Patterned graphene, plasma etching, micromesh, transparent conductive films, solar cells.
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