http://www.cnr.it/ontology/cnr/individuo/prodotto/ID283740
And Yet it Moves! Microfluidics Without Channels and Troughs (Articolo in rivista)
- Type
- Label
- And Yet it Moves! Microfluidics Without Channels and Troughs (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/adfm.201300913 (literal)
- Alternative label
Lugli, Francesca; Fioravanti, Giulia; Pattini, Denise; Pasquali, Luca; Montecchi, Monica; Gentili, Denis; Murgia, Mauro; Hemmatian, Zahra; Cavallini, Massimiliano; Zerbetto, Francesco (2013)
And Yet it Moves! Microfluidics Without Channels and Troughs
in Advanced functional materials (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Lugli, Francesca; Fioravanti, Giulia; Pattini, Denise; Pasquali, Luca; Montecchi, Monica; Gentili, Denis; Murgia, Mauro; Hemmatian, Zahra; Cavallini, Massimiliano; Zerbetto, Francesco (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- University of Bologna; University of Aquila; Consiglio Nazionale delle Ricerche (CNR); Universita di Modena e Reggio Emilia; Consiglio Nazionale delle Ricerche (CNR); Consiglio Nazionale delle Ricerche (CNR) (literal)
- Titolo
- And Yet it Moves! Microfluidics Without Channels and Troughs (literal)
- Abstract
- A simple, versatile, rapid, and inexpensive procedure based on the immersion method is developed to fabricate chemical gradients on chemically activated Si/SiO2 surfaces by a trichloro (1H,1H,2H,2H-perfluorooctyl) silane self-assembly monolayer (SAM). Contact angle measurements, atomic force microscopy, and X-ray photoelectron spectroscopy data based on the intensity of the signals of C1s and F1s, which progressively increase, indicate that the surface is characterized by the presence of increasing amounts of the SAM along the gradient direction. Experimental conditions are optimized by maximizing the variation of the contact angle of water drops at the starting and the ending points of the gradient. The application of the chemical gradient to droplet motion is demonstrated. The results are rationalized by dissipative particle dynamics simulations that well match the observed contact angles and the velocities of the drops. The simulations also show that the intrinsic nature of the gradient affects the velocity of the motion. (literal)
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