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Danyuo Y, Obayemi JD, Salifu AA, Oyewole OK, Azeko ST, Ani CJ, Dozie-Nwachukwu S, Yirijor J, Abade-Abugre M, Odusanya OS, McBagonluri F, Soboyejo WO. Cell-surface interactions on gold-coated polydimethylsiloxane nanocomposite structures: Localized laser heating on cell viability. J Biomed Mater Res A 2021; 109:2611-2624. [PMID: 34180577 DOI: 10.1002/jbm.a.37254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/11/2021] [Accepted: 06/18/2021] [Indexed: 12/26/2022]
Abstract
This article presents the results of cell-surface interactions on polydimethylsiloxane (PDMS)-based substrates coated with nanoscale gold (Au) thin films. The surfaces of PDMS and PDMS-magnetite (MNP)-based substrates were treated with UV-ozone, prior to thermal vapor deposition (sputter-coated) of thin films of titanium (Ti) onto the substrates to improve the adhesion of Au coatings. The thin layer of Ti was thermally evaporated to improve interfacial adhesion, which was enhanced by a 40-nm thick film microwrinkled/buckled wavy layer of Au, that was coated to enhance cell-surface interactions and protein absorption. Cell-surface interactions were studied on the hybrid surfaces using a combination of optical and fluorescence microscopy. Consequently, cell proliferation and surface cytotoxicity (of the sputter-coated PDMS surfaces) were elucidated by characterizing the metabolic activity in the presence of breast cancer and normal breast cells. The photothermal conversion efficiency associated with laser-materials interactions with the PDMS/PDMS-magnetite-based composites was shown to have an optimum efficiency of ~31.8%. The implications of the results are discussed for potential applications of PDMS nanocomposites in implantable biomedical devices.
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Affiliation(s)
- Yiporo Danyuo
- Department of Mechanical Engineering, Ashesi University, 1 University Avenue, Berekuso, Ghana.,Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria
| | - John David Obayemi
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Ali Azeko Salifu
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Oluwaseun Kehinde Oyewole
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Salifu Tahiru Azeko
- Department of Mechanical Engineering, Tamale Technical University, Tamale, Northern Region, Ghana
| | - Chukwuemeka Joseph Ani
- Department of Theoretical and Applied Physics, African University of Science and Technology (AUST), FCT, Abuja, Nigeria.,Department of Electrical and Electronics Engineering, Nile University of Nigeria, FCT, Abuja, Nigeria
| | - Stella Dozie-Nwachukwu
- Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria.,Biotechnology Advance Research Centre, Sheda Science and Technology Complex (SHESTCO), FCT, Abuja, Nigeria
| | - John Yirijor
- Department of Mechanical Engineering, Academic City University College, Accra, Ghana
| | - Miriam Abade-Abugre
- Department of Mechanical Engineering, Ashesi University, 1 University Avenue, Berekuso, Ghana
| | - Olushola Segun Odusanya
- Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria.,Biotechnology Advance Research Centre, Sheda Science and Technology Complex (SHESTCO), FCT, Abuja, Nigeria
| | - Fred McBagonluri
- Department of Mechanical Engineering, Academic City University College, Accra, Ghana
| | - Winston Oluwole Soboyejo
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
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