摘要 |
The invention is directed to a stable capillary microjet and a monodisperse aerosol formed when the microjet dissociates. A variety of devices and methods are disclosed which allow for the formation of a stream of a first fluid (e.g. a liquid) characterized by forming a stable capillary microjet over a portion of the stream wherein the microjet portion of the stream is formed by a second fluid (e.g. a gas). The second fluid is preferably in a different state from the first fluid-liquid-gas or gas-liquid combinations. However, the first and second fluids may be two different fluids in miscible in each other. The stable capillary microjet comprises a diameter dj at a given point A in the stream characterized by the formula: <math-cwu id="MATH-US-00001"> <number>1</number> <math> <mrow> <msub> <mi>d</mi> <mi>j</mi> </msub> <mo>≅</mo> <mrow> <msup> <mrow> <mo>(</mo> <mfrac> <mrow> <mn>8</mn> <mo></mo> <msub> <mi>ρ</mi> <mn>1</mn> </msub> </mrow> <mrow> <msup> <mi>Π</mi> <mn>2</mn> </msup> <mo></mo> <mi>Δ</mi> <mo></mo> <mstyle> <mtext> </mtext> </mstyle> <mo></mo> <msub> <mi>P</mi> <mi>g</mi> </msub> </mrow> </mfrac> <mo>)</mo> </mrow> <mfrac> <mn>1</mn> <mn>4</mn> </mfrac> </msup> <mo></mo> <msup> <mi>Q</mi> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </msup> </mrow> </mrow> </math> <mathematica-file id="MATHEMATICA-00001" file="US20010042793A1-20011122-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="29.0304" file="US20010042793A1-20011122-M00001.TIF" imf="TIFF" ti="MF"/> </math-cwu> wherein dj is the diameter of the stable microjet,≅indicates approximately equally to where an acceptable margin of error is ±10%, rho1 is the density of the liquid and DELTAPg is change in gas pressure of gas surrounding the stream at the point A.
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