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26 Mar 2001

Volume 78, Issue 13, pp. 1805-1950

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Pulsed liquid microjet for microsurgery

D. A. Fletcher and D. V. Palanker

Appl. Phys. Lett. 78, 1933 (2001); http://dx.doi.org/10.1063/1.1357452 (3 pages) | Cited 14 times

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Show Abstract
The precision of soft tissue dissection with pulsed lasers in liquid media is typically limited by collateral damage from vapor bubbles created during energy deposition. We present an alternative technique for creating incisions using a pulsed liquid microjet driven by an electric discharge-induced vapor bubble generated inside a micronozzle. We use this technique to create a pulsed jet 30 μm in diameter with a peak velocity of 90 m/s and total ejected volume on the order of 100 pl. Incision tests on a polyacrylamide gel simulating soft tissue show that the width of the cut is comparable to the diameter of the micronozzle and that collateral damage is significantly less than that produced by a vapor bubble not confined by the nozzle. © 2001 American Institute of Physics.
Show PACS
87.80.-y Biophysical techniques (research methods)
47.27.wg Turbulent jets
47.60.-i Flow phenomena in quasi-one-dimensional systems
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