APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

1 Nov 2004

Volume 85, Issue 18, pp. 3959-4247

Issue Cover Spotlight Figure

Appl. Phys. Lett. 85, 4142 (2004); http://dx.doi.org/10.1063/1.1811774 (3 pages)

Hong Jin Fan, Roland Scholz, Florian M. Kolb, and Margit Zacharias
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

The double-sided ultrasonic beam displacement

Nico F. Declercq, Joris Degrieck, and Oswald Leroy

Appl. Phys. Lett. 85, 4234 (2004); http://dx.doi.org/10.1063/1.1812363 (3 pages) | Cited 1 time

Online Publication Date: 3 November 2004

Full Text: Read Online (HTML) | Download PDF

Show Abstract
It is a well-established idea in optics as well as in ultrasonics that a bounded Gaussian beam, when reflected from an interface, can be displaced in the forward or in the backward direction, depending on the propagation direction of leaky waves that are generated by the incident beam. Such a displacement is often accompanied by the so-called Schoch effect characterized by a null strip in between a specular and a nonspecular reflected beam, and a trailing field that is much further displaced. The current letter shows experimentally and numerically that a simultaneous forward and backward displacement is possible accompanied by two null strips and being only the result of forward propagating Lamb waves.
Show PACS
43.20.-f General linear acoustics
68.35.Iv Acoustical properties
62.65.+k Acoustical properties of solids

Microfluidic manipulation via Marangoni forces

R. H. Farahi, A. Passian, T. L. Ferrell, and T. Thundat

Appl. Phys. Lett. 85, 4237 (2004); http://dx.doi.org/10.1063/1.1812830 (3 pages) | Cited 25 times

Online Publication Date: 3 November 2004

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A convective flow system is engendered when two liquid droplets, or a liquid droplet and a solid surface, are maintained at different temperatures. Such flows give rise to Marangoni forces which under proper conditions prevent droplet coalescence, cause fluid motion, and dewetting. We present a study of adsorbed and applied fluid movement on a solid surface driven by surface tension gradients created by thermal gradients. Flexible control over the silicone oil and 1,3,5-trinitrotoluene movement is accomplished with an array of individually controllable gold thin film thermal elements on a fused silica substrate surface. We thus demonstrate unlimited fluid movements in one dimension.
Show PACS
07.10.Cm Micromechanical devices and systems
47.85.Np Fluidics
47.27.T- Turbulent transport processes
68.03.Cd Surface tension and related phenomena
47.55.D- Drops and bubbles
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
68.03.Fg Evaporation and condensation of liquids

Nonlinear transport imaging by scanning impedance microscopy

J. Shin, V. Meunier, A. P. Baddorf, and S. V. Kalinin

Appl. Phys. Lett. 85, 4240 (2004); http://dx.doi.org/10.1063/1.1812372 (3 pages) | Cited 4 times

Online Publication Date: 3 November 2004

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Scanning probe microscopy is an established tool for characterization of the linear static and frequency-dependent lateral electronic transport in materials and devices at the nanoscale. In this letter, a modified scanning impedance microscopy (SIM) technique is proposed to extend the nanoscale transport measurements of intrinsic material properties to the nonlinear regime, through detection of frequency harmonics, and exemplified by a detailed study of a prototypical metal–semiconductor interface. The imaging mechanism, surface–tip contrast transfer, optimal experimental conditions, and potential applications of nonlinear SIM are discussed. This technique can be readily transferred to most cantilever-based scanning probe microscopes.
Show PACS
73.40.Ns Metal-nonmetal contacts
07.79.-v Scanning probe microscopes and components

Electric-field driven jetting from dielectric liquids

S. N. Jayasinghe and M. J. Edirisinghe

Appl. Phys. Lett. 85, 4243 (2004); http://dx.doi.org/10.1063/1.1812574 (3 pages) | Cited 9 times

Online Publication Date: 3 November 2004

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Three dielectric (electrical conductivity ∼10−13 Sm−1) Newtonian liquids with viscosity in the range 1–100 mPa s were passed through a needle at a controlled flow rate under the influence of an electric field. At an electric field strength of 1.5 kV∕mm, the liquid exiting the needle instantaneously transformed from dripping droplets to an elliptically pendent droplet from the apex of which a fine jet evolved. Thus, a jet can be obtained on demand, and in this letter we define this phenomenon and explain a basis for it.
Show PACS
77.84.Nh Liquids, emulsions, and suspensions; liquid crystals
47.27.wg Turbulent jets
47.65.-d Magnetohydrodynamics and electrohydrodynamics
47.55.D- Drops and bubbles
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close