Acoustic Vaporization
Acoustic Vaporization - Related Videos
08:28
Synthesis of Phase-shift Nanoemulsions with Narrow Size Distributions for Acoustic Droplet Vaporization and Bubble-enhanced Ultrasound-mediated Ablation
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Cited by 18 •
2012
Phase-shift nanoemulsions (PSNE) can be vaporized using high intensity focused ultrasound to enhance localized heating and improve thermal ablation in tumors. In this report, the preparation of stable PSNE with a narrow size distribution is described. Furthermore, the impact of vaporized PSNE on ultrasound-mediated ablation is demonstrated in tissue-mimicking phantoms.
07:44
Formulation and Acoustic Modulation of Optically Vaporized Perfluorocarbon Nanodroplets
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Cited by 5 •
2021
Optically activated perfluorocarbon nanodroplets show promise in imaging applications outside of the vascular system. This article will demonstrate how to synthesize these particles, crosslink polyacrylamide phantoms, and modulate the droplets acoustically to enhance their signal.
01:18
Vaporization
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2019
The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
02:34
Vapor Pressure
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2020
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
12:26
Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
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Cited by 4 •
2013
In this video we first describe fabrication and operation procedures of a surface acoustic wave (SAW) acoustic counterflow device. We then demonstrate an experimental setup that allows for both qualitative flow visualization and quantitative analysis of complex flows within the SAW pumping device.
FAQs
Focused acoustic waves change the pressure conditions around a superheated droplet. The applied pressure lowers the droplet’s effective vaporization threshold, allowing its liquid contents to undergo rapid expansion into a gas bubble. This pressure-triggered response provides a controllable activation mechanism because vaporization occurs in relation to the acoustic exposure rather than independently of the ultrasound field.
Vaporization depends on several interacting conditions, including acoustic pressure, droplet composition, temperature, and exposure conditions. Liquid perfluorocarbons are highlighted as materials that can expand rapidly into gas bubbles when activated. Adjusting these variables influences whether vaporization occurs and supports research aimed at controlling where and when the phase change is initiated.
The gas bubbles provide more than a transient phase change. They can enhance ultrasound imaging, modify local mechanical forces, or help support targeted drug delivery. These different effects allow the same acoustically activated system to serve imaging, mechanical, and therapeutic purposes, making bubble formation relevant to approaches that combine diagnosis with localized treatment.
A general workflow begins with phase-change droplets, such as liquid perfluorocarbons, followed by focused acoustic exposure. The ultrasound pressure lowers the effective vaporization threshold, and the droplets expand into gas bubbles. Researchers can then examine the resulting imaging enhancement, local mechanical effects, or drug-delivery potential, depending on the intended medical application.
Researchers may investigate Acoustic Vaporization when they need ultrasound-controlled activation within the body. Potential uses include enhancing ultrasound imaging, producing localized mechanical effects, supporting targeted drug delivery, and developing minimally invasive therapies. The technique is especially relevant when treatment or diagnostic activity must be activated through an externally applied acoustic field rather than continuously throughout the body.
The response depends on pressure, composition, temperature, and exposure conditions, so controlling these factors is central to treatment precision. Medical research therefore examines how to activate droplets predictably while addressing safety. This work also supports theranostic applications, in which acoustically generated bubbles could contribute to both diagnostic imaging and localized therapeutic strategies.