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Particle Image Velocimetry (PIV) - Particle Image Velocimetry (PIV) is a technique to visualize flow and measure instantaneous flow velocity and direction of a fluid. The technique relies on two images being taken from picoseconds to milliseconds apart, allowing computer analysis to follow the movement of individual particles in two dimensions. The fluid must have visible particles small enough to faithfully follow the flow of the liquid or gas sample. These particles can be part of the sample, or seeded into the liquid or gas to aid the visualization and analysis. PIV is commonly used in many different areas, such as combustion, aerosol analysis, pipe flows and wind tunnel experiments.
Laser light is used due to the high intensity beams that can be produced and the ability of the beam to be shaped into a 2-dimensional light sheet that forms the canvass of the image. The power requirement is proportional to the size of the sample that needs to be measured with a large sample requiring higher powers. The beam pointing stability is also crucial as any movement in the light sheet, will artificially corrupt the velocity measurements. A range of laser wavelengths can be used depending on sensitivity of the measurement camera.
Particle Image Velocimetry
| Product | Wavelength | Description | Starting At | In Stock | |
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 | 532 nm Best Seller! | High Visibility (5 mW - 20 mW) Green Line Projection Laser LBS-532-TL (BLG) | $269.00 | ||
 | 405 nm Best Seller! | 405 nm Collimated Diode Laser System 50 - 10000 mW Output Power | $991.00 | Specs |
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 | 473 nm Best Seller! | 473 nm DPSS Laser System 5 - 100 mW Output Power | $1,664.00 | Specs |
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 | 1064 nm Best Seller! | Environmentally Sealed 1064 nm DPSS Laser System 100 - 1000 mW Output Power | $2,186.00 | Specs |
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 | 520 nm | 520 nm Collimated Diode Laser System with Near-TEM00 Beam 5 - 50 mW Output Power | $2,274.00 | Specs |
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| 520 nm | 520 nm Collimated Diode Laser System 50 - 1000 mW Output Power | $2,274.00 | Specs |
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| 1064 nm Best Seller! | 1064 nm DPSS Laser System 100 - 1000 mW Output Power | $2,274.00 | Specs |
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| 473 nm Best Seller! | 473 nm DPSS Laser System 200 - 500 mW Output Power | $2,482.00 | Specs |
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| 473 nm Best Seller! | Environmentally Sealed 473 nm DPSS Laser System 10 - 100 mW Output Power | $4,225.00 | Specs |
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| 405 nm Best Seller! | 405 nm Collimated Diode Laser System with TEM00 Beam 10 - 40 mW Output Power | $4,777.00 | Specs |
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| 405 nm Best Seller! | 405 nm Collimated Diode Laser System 30 - 50 mW Output Power | $4,805.00 | Specs |
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| 520 nm | 520 nm Collimated Diode Laser System 5 - 10 mW Output Power | $4,805.00 | Specs |
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| 520 nm | 520 nm Collimated Diode Laser System with TEM00 Beam 5 - 20 mW Output Power | $4,805.00 | Specs |
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| 473 nm Best Seller! | Fanless 473 nm DPSS Laser System 5 - 500 mW Output Power | $4,805.00 | Specs |
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| 1064 nm Best Seller! | 1064 nm DPSS Laser System 4000 - 5000 mW Output Power | $6,321.00 | Specs |
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| 473 nm Best Seller! | 473 nm DPSS Laser System 800 - 1500 mW Output Power | $8,673.00 | Specs |
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| 1064 nm Best Seller! | 1064 nm DPSS Laser System 10000 - 20000 mW Output Power | $10,242.00 | Specs |
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| 473 nm Best Seller! | 473 nm DPSS Laser System | $13,975.00 | Specs |
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| 473 nm Best Seller! | 473 nm DPSS Laser System - mW Output Power | $20,150.00 | Specs |