Ion Lithography of Single Ions Irradiation for Spatially Regular Arrays of Pores in Membranes of Polyethylene Terephthalate

0565374 - ÚJF 2023 RIV CH eng J - Journal Article
Cutroneo, Mariapompea - Hnatowicz, Vladimír - Macková, Anna - Malinský, Petr - Mikšová, Romana - Ceccio, Giovanni - Malý, J. - Smejkal, J. - Havránek, Vladimír
Ion Lithography of Single Ions Irradiation for Spatially Regular Arrays of Pores in Membranes of Polyethylene Terephthalate.
Nanomaterials. Roč. 12, č. 22 (2022), č. článku 3927. E-ISSN 2079-4991
R&D Projects: GA ČR(CZ) GA22-10536S
Research Infrastructure: CANAM II - 90056; NanoEnviCz II - 90124
Institutional support: RVO:61389005
Keywords : polyethylene terephthalate * ion lithography * membrane * STIM * pore size-shape simulation * microfluidics * organ-on-chips
OECD category: Nuclear physics
Impact factor: 5.3, year: 2022
Method of publishing: Open access
https://doi.org/10.3390/nano12223927

Routinely, in membrane technology, the decay from radioactive particles or the bombardment of ions with MeV energy per nucleon have been employed for the production of narrow and long pores in membranes. Presently, the ion lithography is proposed to make the fabrication cost more affordable. It is prospective for the use of medium capacity accelerators making more feasible the fabrication of customized membranes. Thin polyethylene terephthalate foils have been patterned using 12 MeV O5+ ions and then processed to obtain good aspect ratio ion track pores in membranes. Pores of micrometric diameter with the following profiles were fabricated in the membranes: truncated cone, double conical, ideal cone, and cylindrical. Monitoring of the shape and size of pores has been attempted with a combination of Scanning Transmission Ion Microscope and a newly designed simulation program. This study is focused on the use of low-energy ions, accomplished in all laboratories, for the fabrication of membranes where the pores are not randomly traced and exhibit higher surface density and negligible overlapping than in membranes commonly manufactured. The good reproducibility and the ordered pore locations can be potentially utilized in applications such as microfluidics and organ-on-chip microsystems, where cells growing over porous substrates are used in simulation of biological barriers and transport processes.
Permanent Link: https://hdl.handle.net/11104/0336927