
The Library
Laser textured surface gradients
Tools
Ta, Van Duong, Dunn, Andrew, Wasley, Thomas J., Li, Ji, Kay, Robert W., Stringer, Jonathan, Smith, Patrick J., Esenturk, Emre, Connaughton, Colm and Shephard, Jonathan D. (2016) Laser textured surface gradients. Applied Surface Science, 371 . pp. 583-589. doi:10.1016/j.apsusc.2016.03.054 ISSN 0169-4332.
|
PDF
WRAP_1-s2.0-S0169433216304901-main.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2645Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.apsusc.2016.03.054
Abstract
This work demonstrates a novel technique for fabricating surfaces with roughness and wettability gradients and their subsequent applications for chemical sensors. Surface roughness gradients on brass sheets are obtained directly by nanosecond laser texturing. When these structured surfaces are exposed to air, their wettability decreases with time (up to 20 days) achieving both spatial and temporal wettability gradients. The surfaces are responsive to organic solvents. Contact angles of a series of dilute isopropanol solutions decay exponentially with concentration. In particular, a fall of 132° in contact angle is observed on a surface gradient, one order of magnitude higher than the 14° observed for the unprocessed surface, when the isopropanol concentration increased from 0 to 15.6 wt%. As the wettability changes gradually over the surface, contact angle also changes correspondingly. This effect offers multi-sensitivity at different zones on the surface and is useful for accurate measurement of chemical concentration.
Item Type: | Journal Article | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Research Centres > Centre for Complexity Science Faculty of Science, Engineering and Medicine > Science > Mathematics |
||||||||||
Library of Congress Subject Headings (LCSH): | Surfaces (Technology), Surface roughness, Lasers, Nanotechnology , Chemical detectors | ||||||||||
Journal or Publication Title: | Applied Surface Science | ||||||||||
Publisher: | Elsevier BV | ||||||||||
ISSN: | 0169-4332 | ||||||||||
Official Date: | 15 May 2016 | ||||||||||
Dates: |
|
||||||||||
Volume: | 371 | ||||||||||
Page Range: | pp. 583-589 | ||||||||||
DOI: | 10.1016/j.apsusc.2016.03.054 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||
Date of first compliant deposit: | 2 June 2016 | ||||||||||
Date of first compliant Open Access: | 3 June 2016 | ||||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||||
Grant number: | EP/L017431/1, EP/L017350/1, EP/L016907/1 and EP/L017415/1 |
Request changes or add full text files to a record
Repository staff actions (login required)
![]() |
View Item |
Downloads
Downloads per month over past year