Functional Acrylic Surfaces Obtained by Scratching
By using sandpaper of different grit, we have scratched up smooth sheets of acrylic to cover their surfaces with disordered but near parallel micro-grooves. This procedure allowed us to transform the acrylic surface into a functional surface; measuring the capillary rise of silicone oil up to an ave...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Fluids |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-5521/6/12/463 |
| _version_ | 1797504757067153408 |
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| author | Abraham Medina Abel López-Villa Carlos A. Vargas |
| author_facet | Abraham Medina Abel López-Villa Carlos A. Vargas |
| author_sort | Abraham Medina |
| collection | DOAJ |
| description | By using sandpaper of different grit, we have scratched up smooth sheets of acrylic to cover their surfaces with disordered but near parallel micro-grooves. This procedure allowed us to transform the acrylic surface into a functional surface; measuring the capillary rise of silicone oil up to an average height <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi>h</mi><mo>¯</mo></mover></semantics></math></inline-formula>, we found that <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi>h</mi><mo>¯</mo></mover></semantics></math></inline-formula> evolves as a power law of the form <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover><mi>h</mi><mo>¯</mo></mover><mo>∼</mo><msup><mi>t</mi><mi>n</mi></msup></mrow></semantics></math></inline-formula>, where <i>t</i> is the elapsed time from the start of the flow and <i>n</i> takes the values 0.40 or 0.50, depending on the different inclinations of the sheets. Such behavior can be understood alluding to the theoretical predictions for the capillary rise in very tight, open capillary wedges. We also explore other functionalities of such surfaces, as the loss of mass of water sessile droplets on them and the generic role of worn surfaces, in the short survival time of SARS-CoV-2, the virus that causes COVID-19. |
| first_indexed | 2024-03-10T04:08:53Z |
| format | Article |
| id | doaj.art-1d0cc5ad3a744be6b942b73194c9c715 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-10T04:08:53Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-1d0cc5ad3a744be6b942b73194c9c7152023-11-23T08:15:52ZengMDPI AGFluids2311-55212021-12-0161246310.3390/fluids6120463Functional Acrylic Surfaces Obtained by ScratchingAbraham Medina0Abel López-Villa1Carlos A. Vargas2SEPI ESIME Azcapotzalco, Instituto Politecnico Nacional, Av. de las Granjas 682, Col. Sta. Catarina Azcapotzalco, Mexico City 02250, MexicoSEPI ESIME Azcapotzalco, Instituto Politecnico Nacional, Av. de las Granjas 682, Col. Sta. Catarina Azcapotzalco, Mexico City 02250, MexicoDepartamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Col. Reynosa Azcapotzalco, Mexico City 02200, MexicoBy using sandpaper of different grit, we have scratched up smooth sheets of acrylic to cover their surfaces with disordered but near parallel micro-grooves. This procedure allowed us to transform the acrylic surface into a functional surface; measuring the capillary rise of silicone oil up to an average height <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi>h</mi><mo>¯</mo></mover></semantics></math></inline-formula>, we found that <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi>h</mi><mo>¯</mo></mover></semantics></math></inline-formula> evolves as a power law of the form <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover><mi>h</mi><mo>¯</mo></mover><mo>∼</mo><msup><mi>t</mi><mi>n</mi></msup></mrow></semantics></math></inline-formula>, where <i>t</i> is the elapsed time from the start of the flow and <i>n</i> takes the values 0.40 or 0.50, depending on the different inclinations of the sheets. Such behavior can be understood alluding to the theoretical predictions for the capillary rise in very tight, open capillary wedges. We also explore other functionalities of such surfaces, as the loss of mass of water sessile droplets on them and the generic role of worn surfaces, in the short survival time of SARS-CoV-2, the virus that causes COVID-19.https://www.mdpi.com/2311-5521/6/12/463capillary risefunctional surfaceshuman skyndropletsCOVID-19 |
| spellingShingle | Abraham Medina Abel López-Villa Carlos A. Vargas Functional Acrylic Surfaces Obtained by Scratching Fluids capillary rise functional surfaces human skyn droplets COVID-19 |
| title | Functional Acrylic Surfaces Obtained by Scratching |
| title_full | Functional Acrylic Surfaces Obtained by Scratching |
| title_fullStr | Functional Acrylic Surfaces Obtained by Scratching |
| title_full_unstemmed | Functional Acrylic Surfaces Obtained by Scratching |
| title_short | Functional Acrylic Surfaces Obtained by Scratching |
| title_sort | functional acrylic surfaces obtained by scratching |
| topic | capillary rise functional surfaces human skyn droplets COVID-19 |
| url | https://www.mdpi.com/2311-5521/6/12/463 |
| work_keys_str_mv | AT abrahammedina functionalacrylicsurfacesobtainedbyscratching AT abellopezvilla functionalacrylicsurfacesobtainedbyscratching AT carlosavargas functionalacrylicsurfacesobtainedbyscratching |