1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Modeling non-spherical oscillations and stability of acoustically driven shelled microbubbles
Rent:
Rent this article for
USD
10.1121/1.4707479
/content/asa/journal/jasa/131/6/10.1121/1.4707479
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4707479

Figures

Image of FIG. 1.
FIG. 1.

High speed camera images of bubble surface modes appearing in Sonovue microbubbles, n = 3,4,5 from left to right. Each image represents a different bubble of approximately 10 μm in size, being driven in a 0.5 MHz acoustic field. Images were taken in-house on a Cordin 550 (Cordin Company, Salt Lake City, UT) at 2 Mfps.

Image of FIG. 2.
FIG. 2.

(Color online) Simulation of bubble surface modes using surface harmonics displayed in polar plot (upper) and area plots (lower). The amplitude of the shaded area represents anYn m (θ,ϕ). (Showing in terms of r,θ for m = 0 only.)

Image of FIG. 3.
FIG. 3.

(Color online) Oscillations of the second surface mode in a 2.9 μm bubble insonated at 1.7 Mhz. (a) Driving p-n acoustic pressure at 170 kPa; (b) radial oscillations when driven at 170 kPa; (c) second mode amplitude when driven at 170 kPa; (d) second mode amplitude when driven at 400 kPa, where simulation stops when the second mode amplitude of the bubble exceeds its initial radius.

Image of FIG. 4.
FIG. 4.

Simulation of bubble surface modes with varying bubble size and acoustic pressure. The color bar, in logarithmic scale, represents the number of pulses taken for the given surface mode to become larger than the initial bubble size. Left: shelled bubbles; right: shell free bubbles; top: n = 2; middle: n = 3; bottom: n = 4. Performed at 1.7 MHz using the shell parameters listed in Sec. IV. Note that a value of 100 infers that the bubble was not overwhelmed in surface mode oscillations during the simulated 100 pulses.

Image of FIG. 5.
FIG. 5.

(Color online) 3.5 μm bubble driven at 1.7 MHz, 425 kPa (top), and 450 kPa (bottom). Period doubling behavior in the radial oscillations at the higher driving pressure (bottom) damps the build up of surface mode oscillations.

Tables

Generic image for table
TABLE I.

List of parameter values used for simulations.

Loading

Article metrics loading...

/content/asa/journal/jasa/131/6/10.1121/1.4707479
2012-06-14
2014-04-19
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Modeling non-spherical oscillations and stability of acoustically driven shelled microbubbles
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/6/10.1121/1.4707479
10.1121/1.4707479
SEARCH_EXPAND_ITEM