Dielectrophoretic Assembly of Graphene and Electrical Characterization
AN Li-bao1, LI Wen1, CHANG Chun-rui2
1. College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063009, Hebei, China;
2. College of Sciences, North China University of Science and Technology, Tangshan 063009, Hebei, China
Abstract：Integrating graphene into micro-and nano-devices is a critical step for its application in many fields. Graphene-a type of two-dimensional nanomaterials was assembled by dielectrophoresis(DEP) and the influence of the DEP process parameters including the magnitude of the applied voltage, the concentration of the graphene suspension, and the duration of the electric field was investigated. Results show that the quantity of the assembled graphene increases with increasing these parameter values, and the concentration of the graphene suspension is the most significant factor. I-V curve of the assembled graphene presents a good linearity and the electrical resistance of the samples ranges from several kΩ to several hundred kΩ, depending on the quantity of the assembled graphene. This indicates that there exists a high contact resistance between graphene and metal electrodes. The contact resistance of graphene can be reduced efficiently by local joule heating, and the contact resistance is reduced at its most by 47.91% when the applied voltage is 3.6V.
 SMIRNOV V A, VASIL'EV V P, DENISOV N N, et al. Electric behavior of interlayer water in graphene oxide films[J]. Chemical Physics Letters, 2016, 648:87-90.
 于美, 李新杰, 马玉骁, 等. 石墨烯基复合超级电容器材料研究进展[J]. 材料工程, 2016, 44(5):101-111. YU M, LI X J, MA Y X, et al. Progress in research on graphene-based composite supercapacitor materials[J]. Journal of Materials Engineering, 2016, 44(5):101-111.
 YAN X H, WU R, XU J B, et al. A monolayer graphene-Nafion sandwich membrane for direct methanol fuel cells[J]. Journal of Power Sources, 2016, 311:188-194.
 YANG W, NI M, REN X, et al. Graphene in supercapacitor applications[J]. Current Opinion in Colloid and Interface Science, 2015, 20(5/6):416-428.
 ZHANG Y, LIU L, XI N, et al. Dielectrophoretic assembly and atomic force microscopy modification of reduced graphene oxide[J]. Journal of Applied Physics, 2011, 110(11):114515.
 AN L B, FRIEDRICH C R. Measurement of contact resistance of multiwall carbon nanotubes by electrical contact using a focused ion beam[J]. Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms, 2012, 272:169-172.
 McCANNA J P, SONNENBERG A, HELLER M J. Low level epifluorescent detection of nanoparticles and DNA on dielectrophoretic microarrays[J]. Journal of Biophotonics, 2014, 7(11/12):863-873.
 CHEN L, ZHENG X L, HU N, et al. Research progress on microfluidic chip of cell separation based on dielectrophoresis[J]. Chinese Journal of Analytical Chemistry, 2015, 43(2):300-309.
 AN L B, FRIEDRICH C R. Dielectrophoretic assembly of carbon nanotubes and stability analysis[J]. Progress in Natural Science:Materials International, 2013, 23(4):367-373.
 王小冲, 安立宝, 龚亮, 等. 碳纳米管受介电泳作用三维运动仿真研究[J]. 西安电子科技大学学报(自然科学版), 2016, 43(4):154-159. WANG X C, AN L B, GONG L, et al. Three-dimensional simulation of kinetics of carbon nanotubes under dielectrophoresis[J]. Journal of Xidian University(Natural Science), 2016, 43(4):154-159.
 VIJAYARAGHAVAN A, SCIASCIA C, DEHM S, et al. Dielectrophoretic assembly of high-density arrays of individual graphene devices for rapid screening[J]. ACS Nano, 2009, 3(7):1729-1734.
 BURG B R, SCHNEIDER J, MAURER S, et al. Dielectrophoretic integration of single-and few-layer graphenes[J]. Journal of Applied Physics, 2010, 107(3):034302.
 VIJAYARAGHAVAN A. Bottom-up assembly of nano-carbon devices by dielectrophoresis[J]. Physica Status Solidi B, 2013, 250(12):2505-2517.
 AN L B, CHEAM D D, FRIEDRICH C R. Controlled dielectrophoretic assembly of multiwalled carbon nanotubes[J]. The Journal of Physical Chemistry C, 2008, 113(1):37-39.
 AN L B, FRIEDRICH C R. Process parameters and their relations for the dielectrophoretic assembly of carbon nanotubes[J]. Journal of Applied Physics, 2009, 105(7):074314.
 PATHANGI H, GROESENEKEN G, WITVROUW A. Dielectrophoretic assembly of suspended single-walled carbon nanotubes[J]. Microelectronic Engineering, 2012, 98:218-221.
 AN L B, YANG X, CHANG C R. On contact resistance of carbon nanotubes[J]. International Journal of Theoretical and Applied Nanotechnology, 2013, 1(2):30-40.