Fixed Angle Rotor

A fixed-angle rotor is a centrifuge rotor that holds sample tubes at a constant angle relative to the axis of rotation, enabling efficient separation of biological materials. During centrifugation, centrifugal force moves particles outward through the liquid, while the angled tube directs sediment toward the outer wall and bottom to form a compact pellet. Separation depends on factors such as particle size, density, shape, and the applied centrifugal field. Fixed-angle rotors are widely used for pelleting cells, organelles, nucleic acids, proteins, and other particulate material, supporting cell fractionation, sample preparation, and biochemical analysis.

Fixed Angle Rotor - Related Videos

Research

JoVE Journal - Engineering

How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges

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Cited by 1 •

2016

Here we describe how to build a robust spring-transport mechanism for a spinning rotor gauge. This device securely immobilizes the rotor and keeps it under vacuum during transportation. We also describe packaging that minimizes the risk of damage during transport. Tests show our design works for typical shocks during transport.

Research

JoVE Journal - Bioengineering
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Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells

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Cited by 17 •

2012

Fluorescence Lifetime Imaging (FLIM) has emerged as a key technique to image the environment and interaction of specific proteins and dyes in living cells. FLIM of fluorescent molecular rotors allows mapping of viscosity in living cells.

Magnetic Resonance Spectroscopy of live Drosophila melanogaster using Magic Angle Spinning

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Cited by 5 •

2010

This technique enables the use of high-resolution magic angle spinning proton MR spectroscopy (HRMAS 1H-MRS) for molecular characterization of live Drosophila melanogaster with a conventional 14.1 tesla spectrometer equipped with an HRMAS probe.

Education

JoVE Core - Physics

Contact Angle

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2023

When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces. The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive force...

Research

JoVE Journal - Medicine
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Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock

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Cited by 24 •

2011

The Hemorrhagic Shock model has been a reliable and reproducible resource facilitating the identification and understanding of signaling cascades associated with inflammation and end-organ damage after trauma. This article provides a step-by-step description of surgical and mechanical aspects associated with the Hemorrhagic Shock experimental procedure in mice.

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