How the geometry of patterned surfaces affects the thickness distribution of the oxidized silica layer on polydimethylsiloxane (PDMS) after ultraviolet/ozone treatment
It is well established that a thin silica-like surface layer is formed when a cross-linked PDMS structure is subjected to ultraviolet/ozone treatment. Due to surface geometry, especially near the corners, this silica-like surface layer has non-uniform thickness, which can impact many mechanical prop...
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| Veröffentlicht in: | Soft matter 2023-12, Vol.2 (1), p.89-93 |
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| creator | Hui, Chung-Yuen Jagota, Anand Liu, Zezhou |
| description | It is well established that a thin silica-like surface layer is formed when a cross-linked PDMS structure is subjected to ultraviolet/ozone treatment. Due to surface geometry, especially near the corners, this silica-like surface layer has non-uniform thickness, which can impact many mechanical properties, including adhesion and fracture strength. Here we use a simple analytic model based on diffusion of reactive species to predict the thickness of the oxidized surface layer near the corners. We demonstrate that these corner solutions can be patched together to determine the thickness of the oxidized layer in complex geometries.
An analytic solution is presented to predict the non-uniform near-surface oxidized layer thickness when a cross-linked PDMS structure is subjected to ultraviolet/ozone treatment. |
| doi_str_mv | 10.1039/d3sm01308a |
| format | Article |
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An analytic solution is presented to predict the non-uniform near-surface oxidized layer thickness when a cross-linked PDMS structure is subjected to ultraviolet/ozone treatment.</description><subject>Adhesive strength</subject><subject>Corners</subject><subject>Fracture strength</subject><subject>Mechanical properties</subject><subject>Ozonation</subject><subject>Ozone</subject><subject>Polydimethylsiloxane</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Species diffusion</subject><subject>Surface geometry</subject><subject>Surface layers</subject><subject>Thickness</subject><issn>1744-683X</issn><issn>1744-6848</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNpdkUFrFTEUhYMotlY37pWAmyo8m0wySWZZWm0LLQpVcDdkkhtf6szkNclop3_Iv9m8vvYJru6F891zLhyEXlPykRLWHFiWBkIZUfoJ2qWS84VQXD3d7uzHDnqR0hUhTHEqnqMdpgjlkja76O9p-IPzEvBPCAPkOOPg8ErnDHEEi9MUnTaQsHYOTE73aF5682uElLD1KUffTdmHcX24VsONt_52fet7bzTu9QwRF30V-tn6ErKc-6KFGz0C3v96fHH5vtiXQDz1OerfPvSQD8JtKHKOoPMAY36JnjndJ3j1MPfQ98-fvh2dLs6_nJwdHZ4vTNWIvKioU10jOlk1xBkqnCSGCEmJtMDAOVoLBbICXjsthLLE1NKKDoQzrrGyZntof-O7iuF6gpTbwScDfV-eDVNqK9VwWXEmREHf_YdehSmO5bu2pDNVSy5YoT5sKBNDShFcu4p-0HFuKWnX9bXH7PLivr7DAr99sJy6AewWfeyrAG82QExmq_7rn90BjXGjUg</recordid><startdate>20231220</startdate><enddate>20231220</enddate><creator>Hui, Chung-Yuen</creator><creator>Jagota, Anand</creator><creator>Liu, Zezhou</creator><general>Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-3187-9025</orcidid><orcidid>https://orcid.org/0000-0001-7270-6000</orcidid><orcidid>https://orcid.org/0000-0002-0779-0880</orcidid></search><sort><creationdate>20231220</creationdate><title>How the geometry of patterned surfaces affects the thickness distribution of the oxidized silica layer on polydimethylsiloxane (PDMS) after ultraviolet/ozone treatment</title><author>Hui, Chung-Yuen ; 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Due to surface geometry, especially near the corners, this silica-like surface layer has non-uniform thickness, which can impact many mechanical properties, including adhesion and fracture strength. Here we use a simple analytic model based on diffusion of reactive species to predict the thickness of the oxidized surface layer near the corners. We demonstrate that these corner solutions can be patched together to determine the thickness of the oxidized layer in complex geometries.
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| fulltext | fulltext |
| identifier | ISSN: 1744-683X |
| ispartof | Soft matter, 2023-12, Vol.2 (1), p.89-93 |
| issn | 1744-683X 1744-6848 |
| language | eng |
| recordid | cdi_proquest_journals_2903857463 |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Adhesive strength Corners Fracture strength Mechanical properties Ozonation Ozone Polydimethylsiloxane Silica Silicon dioxide Species diffusion Surface geometry Surface layers Thickness |
| title | How the geometry of patterned surfaces affects the thickness distribution of the oxidized silica layer on polydimethylsiloxane (PDMS) after ultraviolet/ozone treatment |
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