Zobrazeno 1 - 10
of 438
pro vyhledávání: '"Nicholas D. Spencer"'
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Understanding shear thickening in colloidal suspensions is of great practical importance. Hsu et al. create responsive polymer-coated silica particles whose rheology can be tuned in situ, following modifications of their tribology, which is separatel
Externí odkaz:
https://doaj.org/article/241d7a5395254eb3a26a2ef12071fe30
Publikováno v:
ACS Omega, Vol 2, Iss 2, Pp 455-461 (2017)
Externí odkaz:
https://doaj.org/article/4a9b0e57028646cfafa2c821c5ae4dae
Autor:
Nicholas D. Spencer
Publikováno v:
Tribology Online, Vol 9, Iss 4, Pp 143-153 (2014)
Hydrophilic polymer brushes constitute a man-made approach to imitating nature’s lubrication mechanisms. A polymer that has been frequently used to explore such systems is poly(ethylene glycol) (PEG). While PEG may not be the ideal solution for wat
Externí odkaz:
https://doaj.org/article/00575b9be612441490892bff34dcea82
Autor:
Luigi A. Urtis, Andrea Arcifa, Peng Zhang, Junxiao Du, Marzia Fantauzzi, Daniel Rauber, Rolf Hempelmann, Tobias Kraus, Antonella Rossi, Nicholas D. Spencer
Publikováno v:
Lubricants, Vol 7, Iss 3, p 27 (2019)
This work aims to elucidate the role of environmental humidity on the tribological behavior of steel surfaces lubricated with an ionic liquid comprised of a fluorinated phosphonium cation—tributyl-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-octyl-phosp
Externí odkaz:
https://doaj.org/article/5504f209f45843098b4f6eae8d3a4e0b
Publikováno v:
Polymers, Vol 8, Iss 7, p 254 (2016)
We have performed coarse-grained molecular-dynamics simulations on both flexible and semiflexible multi-bead-spring model polymer brushes in the presence of explicit solvent particles, to explore their tribological and structural behaviors. The effec
Externí odkaz:
https://doaj.org/article/c4da538144c44db4bb3f34c5727533b5
Publikováno v:
CHIMIA, Vol 66, Iss 4 (2012)
The characteristic lubricity and non-fouling behavior of polymer brushes is critically dependent on the solvation of the polymer chains, as well as the chain–chain interactions. Dextran brushes have shown promise as non-toxic aqueous lubricant film
Externí odkaz:
https://doaj.org/article/b9e3bf617ac9451c9af277a7d90bbb83
Autor:
Nicholas D. Spencer
Publikováno v:
CHIMIA, Vol 52, Iss 10 (1998)
Advanced surfaces constitute an important component in numerous high technologies today, both industrial and medical. In the Laboratory for Surface Science and Technology at the ETH-Zürich, many different surface treatments and processes are being e
Externí odkaz:
https://doaj.org/article/fba5ce221bb34c4c87ef91a5545b2fec
Autor:
Nicholas D Spencer
Man lubricates mostly with oil. Nature lubricates exclusively with water. Pure water is a poor lubricant, but the addition of proteins, especially glycoproteins, can modify surfaces to make them far more lubricating at slow speeds. Understanding how
Autor:
Nicholas D Spencer
The focus of this book is surface modification, with the goal of tailoring materials for a specific application. By means of this approach, ideal bulk properties of a material, such as its tensile strength (temperature stability, density, or even cos
Autor:
Akinori Kuzuya, Cristiana Passiu, Yoko Yamakoshi, Shivaprakash N. Ramakrishna, Masayuki Nasuda, Antonella Rossi, Nicholas D. Spencer, Ankita Ray
Publikováno v:
ACS Nano, 15 (12)
A tripod molecule incorporating a C60 photocatalyst into a rigid scaffold with disulfide legs was designed and synthesized for the stable and robust attachment of C60 onto an Au-coated atomic force microscope (AFM) tip. The "tripod-C60"was immobilize