Liquid Impinger

A liquid impinger is an air-sampling device that captures airborne particles, including microorganisms, by directing a measured air stream into a liquid collection medium. As air bubbles through the liquid, particles are transferred from the aerosol into suspension, where collection efficiency depends on factors such as airflow rate, impinger design, particle size, and the medium’s ability to preserve biological material. In biology, liquid impingers support bioaerosol monitoring, microbial detection, environmental surveillance, and studies of airborne transmission. The recovered liquid can be analyzed through culture, microscopy, biochemical assays, or molecular methods, linking atmospheric sampling with downstream laboratory identification.

Liquid Impinger - Related Videos

Education

JoVE Science Education - Engineering

Jet Impinging on an Inclined Plate

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2023

Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The goal of this experiment is to demonstrate how a fluid flow exerts forces on structures by conversion of dynamic pressure into static pressure. To this end, we will make a plane jet impinge on a flat plate and will measure the resulting pressure distribution along the plate. The resultant force will be estimated by integrating the product between the...

Determination of Impingement Forces on a Flat Plate with the Control Volume Method

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2023

Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The purpose of this experiment is to demonstrate forces on bodies as the result of changes in the linear momentum of the flow around them using a control volume formulation [1, 2]. The control volume analysis focuses on the macroscopic effect of flow on engineering systems, rather than the detailed description that could be achieved with a differential...

Research

JoVE Journal - Bioengineering

Murine Hind Limb Explant Model for Studying the Mechanobiology of Achilles Tendon Impingement

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2023

We present a custom experimental platform and tissue culture protocol that recreates fibrocartilaginous change driven by impingement of the Achilles tendon insertion in murine hind limb explants with sustained cell viability, providing a model suitable for exploring the mechanobiology of tendon impingement.

Research

JoVE Journal - Bioengineering
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Synthesizing Lipid Nanoparticles by Turbulent Flow in Confined Impinging Jet Mixers

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Cited by 21 •

2024

A detailed protocol for synthesizing lipid nanoparticles (LNPs) using confined impinging jet (CIJ) mixer technologies, including a two-jet CIJ and a four-jet multi-inlet vortex mixer (µMIVM), is demonstrated. The CIJ mixers generate reproducible, turbulent micro-mixing environments, resulting in the production of monodisperse LNPs.

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

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Cited by 4 •

2015

Two experimental devices for examining liquid jet impingement on a high-speed moving surface are described: an air cannon device and a spinning disk device. The apparatuses are used to determine optimal approaches to the application of liquid friction modifier (LFM) onto rail tracks for top-of-rail friction control.

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