Nov
29

Optical Tweezers

About the Instrument: About fifteen years ago some researchers were playing around with laser beams when they discovered that a tightly focused beam could suck a microscopic object into its focal point and trap it there. When they moved the laser, the object moved with it. They had discovered optical tweezers. The modern instrument is […]

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Nov
29

Rigaku Spider X-ray Diffractometer

About the Instrument: This is an extremely versatile tool for determining the structure of crystalline materials, including small or weakly diffracting crystals. The combination of a very intense X-ray source, excellent optics and a curved image plate detector gives the instrument great versatility and sensitivity. “If it’s crystalline and we can see it under the […]

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Nov
29

Surface Plasmon Resonance (SPR) Instrument

About the Instrument: The SPR instrument detects extremely low concentrations of biological compounds in solution. It contains a sensor surface onto which specially designed ‘bait’ ligands, are attached to selectively trap target compound molecules as they float past in solution. The SPR device uses a very clever mechanism, involving ‘surface plasmon resonance’ to measure how […]

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