Wetting an oscillating nanoneedle to image an air-liquid interface at the nanometer scale: dynamical behavior of a nanomeniscus.
The dynamical behavior of a nanomeniscus is investigated with a oscillating nanoneedle recording information on the change of the shape and viscous contribution. At the air-glycerol interface, the dynamical properties exhibit a nonlinear behavior making the nanomeniscus evolution similar to a first-order phase transition. Also shown is the capability to record height images of the liquid interface with resolutions at nanometer scale. At the air-water interface, evaporation leads to more complex dynamical properties. The viscous damping first increases as a consequence of a thinning effect, then, when the contact angle reaches zero, the nanomeniscus is unable to sustain the dissipation.
Jai
C
C
CPMOH, Université Bordeaux 1, 351 Cours de la Libération, 33405 Talence, France.
Aimé
J P
JP
Mariolle
D
D
Boisgard
R
R
Bertin
F
F
D000388:Air; D005990:Glycerol / Q000737:chemistry*; D008422:Materials Testing; D043942:Nanotubes / Q000737:chemistry*; D009991:Oscillometry / Q000379:methods; D013499:Surface Properties; D013997:Time Factors; D017155:Wettability
D005990:Glycerol