Bead Pair Separation

Bead pair separation is a bioengineering method for measuring the forces that hold two microscopic beads together or cause them to interact. The assay applies a controlled mechanical, magnetic, optical, or fluidic force to separate the bead pair, while the required force or separation behavior indicates the strength and dynamics of the connection. Researchers use this approach to quantify biomolecular binding, cell or tissue adhesion, and interactions with engineered surfaces and materials. By converting microscale separation events into measurable physical data, bead pair separation supports the design of biosensors, microfluidic systems, biomaterials, and other technologies that depend on controlled biological adhesion.

Bead Pair Separation - Related Videos

Research

JoVE Journal - Bioengineering

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

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Cited by 8 •

2018

This manuscript introduces a robust method of fabricating concave microwells without the need for complex high-cost facilities. Using magnetic force, steel beads, and a through-hole array, several hundred microwells were formed in a 3 cm x 3 cm polydimethylsiloxane (PDMS) substrate.

Research

JoVE Journal - Bioengineering
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Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

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Cited by 8 •

2011

Dielectrophoresis (DEP) is an effective method to manipulate cells. Printed circuit boards (PCB) can provide inexpensive, reusable and effective electrodes for contact-free cell manipulation within microfluidic devices. By combining PDMS-based microfluidic channels with coverslips on PCBs, we demonstrate bead and cell manipulation and separation within multichannel microfluidic devices.

Microfluidic Acoustophoresis for Flowthrough Separation of Gram-Negative Bacteria using Aptamer Affinity Beads

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2022

This paper describesthe fabrication and operation of microfluidic acoustophoretic chips using the microfluidic acoustophoresis technique and aptamer-modified microbeads that can be used for fast, efficient isolation of Gram-negative bacteria from a medium.

Hydrophilic Interaction Liquid Chromatography: A Technique to Separate Hydrophilic Polar Analytes Using Hydrophilic Beads

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2025

This video demonstrates the principle of separation of hydrophilic polar compounds using hydrophilic interaction liquid chromatography. This technique helps in the purification of various polar analytes, including N-glycans.

Research

JoVE Journal - Biology
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Isolating Human Peripheral Blood Mononuclear Cells from Buffy Coats via High Throughput Immunomagnetic Bead Separation

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Cited by 2 •

2024

This protocol details a high-throughput automation-compatible method to isolate human peripheral blood mononuclear cells for biobanking and other purposes.

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