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- Aad, G., et al.
(författare)
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- 2015
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Ingår i: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368 .- 1550-7998. ; 91:11, s. 112011-
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Tidskriftsartikel (refereegranskat)
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- Ridderström, Christian, et al.
(författare)
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The basic design of the quadruped robot WARP1
- 2000
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Ingår i: International Conference on Climbing and Walking Robots.
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents the basic design of a walking robot platform, in terms of its mechanics,electronics and control. The four-legged robot weighs about 60 kilograms, has three actuatorsin each leg and uses a distributed control system over six CAN busses. Basic strength and speedis demonstrated by experiments where the robot performs walking motions and goes down onits knees and then up again. A brief discussion of experiences from designing and implementingthe platform is included.
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4. |
- Aad, G., et al.
(författare)
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- 2015
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Tidskriftsartikel (refereegranskat)
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6. |
- Van Moer, Wendy
(författare)
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- 2017
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Ingår i: IEEE Instrumentation & Measurement Magazine. - : IEEE. - 1094-6969 .- 1941-0123. ; 20:5, s. 2-2
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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7. |
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8. |
- Arnold, Celine, et al.
(författare)
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Surfactant distribution in waterborne acrylic films. 2 Surface Investigation
- 2011
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Ingår i: Colloids and Surfaces A. - : Elsevier BV. - 0927-7757 .- 1873-4359. ; 374:1-3, s. 58-68
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents results on sodium dodecyl sulfate (SDS) enrichment at the surface of pure acrylic or acrylic/laponite composite latex films. Surface concentrations were measured by Confocal Raman Spectroscopy leading to higher values than the nominal concentration of 6 wt%. X-ray Photoelectron Spectroscopy (XPS) analyses showed uppermost surface layers saturated with SDS in most cases. High resolution Atomic Force Microscopy (AFM) revealed a variety of morphologies for these surfactant top layers, highlighting the occurrence of SDS bilayers in different configurations. In an attempt to check for a correlation between the surface concentration of the surfactant in dry films and the concentration of free surfactant in water in the initial latex, this latter concentration was determined from the level of the plateau in adsorption isotherms. Adsorption studies by conductimetry showed an unexpected increase of the amount of adsorbed SDS with pH. The proposed interpretation is that, upon acrylic acid neutralization, the chains at the surface become more hydrophilic and spread out in water, revealing more sites for SDS to adsorb on. No correlation between free surfactant and surface enrichment could be established, indicating that the enrichment process is more complex than expected.
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