Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Schulman, Rafael"'
The spontaneous migration of droplets on conical fibers is studied experimentally by depositing silicone oil droplets onto conical glass fibers. Their motion is recorded using optical microscopy and analysed to extract the relevant geometrical parame
Externí odkaz:
http://arxiv.org/abs/2008.13390
Autor:
Schulman, Rafael D
PhD Thesis
In this thesis, experiments are described which study the elastocapillary interactions between liquids and taut solid films. The research employs contact angle measurements to elucidate how capillary forces deform compliant solid stru
In this thesis, experiments are described which study the elastocapillary interactions between liquids and taut solid films. The research employs contact angle measurements to elucidate how capillary forces deform compliant solid stru
Externí odkaz:
http://hdl.handle.net/11375/23405
Publikováno v:
Phys. Rev. Lett. 121, 248004, 2018
We present experiments which show that the partial wetting of droplets capped by taut elastic films is highly tunable. Adjusting the tension allows the contact angle and droplet morphology to be controlled. By exploiting these elastic boundaries, dro
Externí odkaz:
http://arxiv.org/abs/1812.09381
Autor:
Schulman, Rafael D., Niven, John F., Hack, Michiel A., DiMaria, Christian, Dalnoki-Veress, Kari
We study the dewetting of liquid films capped by a thin elastomeric layer. When the tension in the elastomer is isotropic, circular holes grow at a rate which decreases with increasing tension. The morphology of holes and rim stability can be control
Externí odkaz:
http://arxiv.org/abs/1711.09318
Publikováno v:
Nature Communications, 9 982 (2018)
Surface stress and surface energy are fundamental quantities which characterize the interface between two materials. Although these quantities are identical for interfaces involving only fluids, the Shuttleworth effect demonstrates that this is not t
Externí odkaz:
http://arxiv.org/abs/1711.09320
In this study, micro-droplets are placed on thin, glassy, free-standing films where the Laplace pressure of the droplet deforms the free-standing film, creating a bulge. The film's tension is modulated by changing temperature continuously from well b
Externí odkaz:
http://arxiv.org/abs/1706.07534
Autor:
Schulman, Rafael D., Ledesma-Alonso, René, Salez, Thomas, Raphaël, Elie, Dalnoki-Veress, Kari
Publikováno v:
Phys. Rev. Lett. 118, 198002 (2017)
We examine the shape of droplets atop deformable thin elastomeric films prepared with an anisotropic tension. As the droplets generate a deformation in the taut film through capillary forces, they assume a shape that is elongated along the high tensi
Externí odkaz:
http://arxiv.org/abs/1703.00799
Autor:
Schulman, Rafael
This thesis describes the use of a micropipette deflection technique to measure the viscous forces experienced by the millimeter sized undulatory swimmer and model organism C. elegans. Using a specialized pipette, we are able to simultaneously measur
Externí odkaz:
http://hdl.handle.net/11375/16348
Autor:
Schulman, Rafael D., Porat, Amir, Charlesworth, Kathleen, Fortais, Adam, Salez, Thomas, Raphaël, Elie, Dalnoki-Veress, Kari
Publikováno v:
Soft Matter, 13 720 (2017)
We report on the elastocapillary deformation of flexible microfibers in contact with liquid droplets. A fiber is observed to bend more as the size of the contacting droplet is increased. At a critical droplet size, proportional to the bending elastoc
Externí odkaz:
http://arxiv.org/abs/1607.05990
Observations indicate blue globular clusters have half-light radii systematically larger than those of red globular clusters. In this paper, we test whether the different metallicity-dependent stellar evolution timescales and mass-loss rates within t
Externí odkaz:
http://arxiv.org/abs/1110.5878