PEDOT:PSS Coating Improves Gecko-Inspired Adhesive PerformanceSource: Journal of Micro and Nano-Manufacturing:;2020:;volume( 008 ):;issue: 003::page 034501-1DOI: 10.1115/1.4048927Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We report a surface treatment for an elastomeric dry adhesive that improves adhesion, especially on surfaces with microscopic roughness. The process involves coating wedge-shaped polydimethylsiloxane (PDMS) features of the adhesive with a 50 nm coating of poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). As compared to the uncoated adhesive, performance is 1.25× better on smooth surfaces like glass, with a maximum shear stress of 70 kPa in shear and 25 kPa in normal adhesion under controlled loading conditions. On slightly rough surfaces such as paper and panels painted with flat paint, it provides between 2.5× and over 12× greater shear stress than the uncoated adhesive. Moreover, the coating, being much stiffer than the underlying wedges, does not increase the tendency to become dirty and does not tend to self-stick, or clump. Durability tests show that the performance remains substantially unchanged for 80,000 attachment/loading/detachment cycles. We describe the coating process, present the test results, and discuss the reasons for the enhanced performance on a variety of materials.
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| contributor author | Kerst, Capella | |
| contributor author | Suresh, Srinivasan A. | |
| contributor author | Ferro, Marc | |
| contributor author | Cutkosky, Mark | |
| date accessioned | 2022-02-04T23:02:57Z | |
| date available | 2022-02-04T23:02:57Z | |
| date copyright | 9/1/2020 12:00:00 AM | |
| date issued | 2020 | |
| identifier issn | 2166-0468 | |
| identifier other | jmnm_008_03_034501.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4275989 | |
| description abstract | We report a surface treatment for an elastomeric dry adhesive that improves adhesion, especially on surfaces with microscopic roughness. The process involves coating wedge-shaped polydimethylsiloxane (PDMS) features of the adhesive with a 50 nm coating of poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). As compared to the uncoated adhesive, performance is 1.25× better on smooth surfaces like glass, with a maximum shear stress of 70 kPa in shear and 25 kPa in normal adhesion under controlled loading conditions. On slightly rough surfaces such as paper and panels painted with flat paint, it provides between 2.5× and over 12× greater shear stress than the uncoated adhesive. Moreover, the coating, being much stiffer than the underlying wedges, does not increase the tendency to become dirty and does not tend to self-stick, or clump. Durability tests show that the performance remains substantially unchanged for 80,000 attachment/loading/detachment cycles. We describe the coating process, present the test results, and discuss the reasons for the enhanced performance on a variety of materials. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | PEDOT:PSS Coating Improves Gecko-Inspired Adhesive Performance | |
| type | Journal Paper | |
| journal volume | 8 | |
| journal issue | 3 | |
| journal title | Journal of Micro and Nano-Manufacturing | |
| identifier doi | 10.1115/1.4048927 | |
| journal fristpage | 034501-1 | |
| journal lastpage | 034501-6 | |
| page | 6 | |
| tree | Journal of Micro and Nano-Manufacturing:;2020:;volume( 008 ):;issue: 003 | |
| contenttype | Fulltext |