2026-09-19T17:29:25Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/689522022-01-13T07:54:36Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Rohit Karnik.
O'Hern, Sean C. (Sean Carson)
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2012-01-30T17:05:34Z
2012-01-30T17:05:34Z
2011
2011
http://hdl.handle.net/1721.1/68952
773826006
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 57-62).
In this thesis, I present a procedure by which to transfer greater than 25 mm² areas of high-quality graphene synthesized via low-pressure chemical vapor deposition from copper foil to porous support substrates. Large-area, high quality graphene on a porous support would serve as a platform by which to create high efficiency porous graphene membranes for use in liquid and gas-phase separation technologies. In this procedure, we transfer greater than 25 mm² areas of graphene with few holes and tears to both gold Quantifoil Holey Carbon transmission electron microscope grids with 1.2 [mu]m diameter pores and to Sterlitech polycarbonate track etch membranes with 200 nm diameter pores by bonding the substrates to the graphene then wet-etching the copper. The resulting membrane quality is characterized via Raman spectroscopy, scanning electron microscopy, diffraction patterning, and aberration-corrected scanning transmission electron microscopy.
by Sean C. O'Hern.
S.M.
62 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Development of process to transfer large areas of LPCVD graphene from copper foil to a porous support substrate
Thesis
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<Abstract>In this thesis, I present a procedure by which to transfer greater than 25 mm² areas of high-quality graphene synthesized via low-pressure chemical vapor deposition from copper foil to porous support substrates. Large-area, high quality graphene on a porous support would serve as a platform by which to create high efficiency porous graphene membranes for use in liquid and gas-phase separation technologies. In this procedure, we transfer greater than 25 mm² areas of graphene with few holes and tears to both gold Quantifoil Holey Carbon transmission electron microscope grids with 1.2 [mu]m diameter pores and to Sterlitech polycarbonate track etch membranes with 200 nm diameter pores by bonding the substrates to the graphene then wet-etching the copper. The resulting membrane quality is characterized via Raman spectroscopy, scanning electron microscopy, diffraction patterning, and aberration-corrected scanning transmission electron microscopy.</Abstract>
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