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Fabrication of a single sub-micron pore spanning a single crystal (100) diamond membrane and impact on particle translocation
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Webb, Jennifer R., Martin, Aiden A., Johnson, Robert P., Joseph, Maxim B., Newton, Mark E., Aharonovich, Igor, Toth, Milos and Macpherson, Julie V. (2017) Fabrication of a single sub-micron pore spanning a single crystal (100) diamond membrane and impact on particle translocation. Carbon, 122 . pp. 319-328. doi:10.1016/j.carbon.2017.06.055 ISSN 0008-6223.
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Official URL: http://dx.doi.org/10.1016/j.carbon.2017.06.055
Abstract
Fabrication of sub-micron (meso)pores in single crystal diamond membranes, which span the entirety of the membrane, is described for the first time, and the translocation properties of polymeric particles through the pore investigated. The pores are produced using a combination of laser micromachining to form the membrane and electron beam induced etching to form the pore. Single crystal diamond as the membrane material, has the advantages of chemical stability and durability, does not hydrate and swell, has outstanding electrical properties that facilitate fast, low noise current-time measurements and is optically transparent for combined optical-conductance sensing. The resulting pores are characterized individually using both conductance measurements, employing a microcapillary electrochemical setup, and electron microscopy. Proof-of-concept experiments to sense charged polystyrene particles as they are electrophoretically driven through a single diamond pore are performed, and the impact of this new pore material on particle translocation is explored. These findings reveal the potential of diamond as a platform for pore-based sensing technologies and pave the way for the fabrication of single nanopores which span the entirety of a diamond membrane.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||
Journal or Publication Title: | Carbon | ||||||||||
Publisher: | Elsevier | ||||||||||
ISSN: | 0008-6223 | ||||||||||
Official Date: | October 2017 | ||||||||||
Dates: |
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Volume: | 122 | ||||||||||
Page Range: | pp. 319-328 | ||||||||||
DOI: | 10.1016/j.carbon.2017.06.055 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 26 June 2017 | ||||||||||
Date of first compliant Open Access: | 21 June 2018 |
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